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R134a 75 to 350 RT Air Conditioning System Air-Cooled Screw Chiller

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R134a75 to 350 RT

A i r C o n d i t i o n i n g S y s t e m

Air-Cooled Screw Chiller

Introduction

LS air-cooled water chillers are complete self-contained automatic refrigerating units that include the latest in

engineering components arranged to provide a compact and efficient unit Each unit is completely assembled

factory wired evacuated charged tested and comes complete and ready for installation Each unit consists of

multiple air-cooled condensers with integral sub-cooler sections one or more accessible semi-hermetic double-

screw compressors star-delta starters flooded type shell-and-tube evaporator and complete refrigerant piping

Liquid line components included are manual liquid line shutoff valves charging valves filter-driers liquid line

solenoid valves sight glassmoisture indicators and electronic expansion valves

Inspection When the equipment is received all items should be carefully checked against the bill of lading to ensure a

complete shipment All units should be carefully inspected for damage upon arrival The unitrsquos serial plate should

be checked before unloading the unit to be sure that it agrees with the power supply available Physical damage to

unit after acceptance is not the responsibility of LS Company

General Description

Nomenclature

S A X X X C S A H - 3 Y FEvaporator type F-flooded

Start mode Y-Δ

Power 3-380V 50Hz 4-415V 50Hz 5-440V 50Hz 6 -380V 60Hz

H-high ambient S-standard ambient

Refrigerant A-R134a

Modules S-single D-double T-triple

Chiller type C-cooled water chiller

Capacity (RT)

Cooling mode Air cooled

Compressor type Semi-hermetic screw

LS Air-Cooled Screw Chillers 02

Compressor

Type The semi-hermetic twin screw compressor used in Model SA liquid chillers has the advantage of hermetically sealing the refrigerant and lubricating oil inside the compressor while allowing technicians access to service and repair internal moving parts Capacity Control Is achieved using a slide valve which automatically modulates compressor capacity in 4 steps 25 50 75 and 100 with equivalent reductions in energy consumption Compressor Starting The compressor starts fully unloaded using the star-delta (YΔ) method to minimize starting current inrush Compressor Characteristics Using the optimum screw rotor profile and precision machining of all components achieves minimum operating clearances to ensure the highest volumetric and compression efficiency and minimum friction

and windage losses The nodular cast iron compressor casing encloses compressor electric motor and oil separator in a single accessible housing ensuring the minimum levels of noise breakout and vibration This rugged structure ensures stable and reliable operation in ambient temperatures ranging from -15 to +55˚c

Cooler

All SA liquid chillers are fitted with a single cooler of the bull ldquoFloodedrdquo shell and tube type having refrigerant in the shell and chilled water inside the tubes The shell is of welded alloy steel construction with steel tube sheets and copper heat exchange tubes Removable steel water boxes at both ends of the cooler allow tube cleaning without disturbing the refrigerant circuit Tubes are mechanically expanded into tube sheets with double grooves to ensure leak tight and trouble free operation Multiple compressor circuit chillers have coolers with separate refrigeration circuits for each compressor Each refrigeration circuit is provided with its own double safety

Specifications

System Flow Chart

Note This is the flow chart of single refrigerant circuit type of air-cooled screw liquid chiller For multi refrigerant circuit chillers each compressor has its own separate circuit as above

LS Air-Cooled Screw Chillers 03

Specifications (Continued)

pressure relief valve All chillers are fitted with drain valves on the removable heads and shell All coolers are factory insulated with 25mm of closed cell expanded synthetic rubber with all joints vapor sealed Coolers are designed in accordance with ASME guidelines and are rated according to the following pressures

REFRIGERANT SIDE WATER SIDE

KgSq cm LbsSq cm KgSq Inch LbsSq Inch

DESIGN PRESSURE 16 230 105 145

TEST PRESSURE 18 260 125 180

High efficiency heat transfer bull tubes are used in Model SA coolers having the external ( re f r igerant s ide) sur face expanded with ldquosaw toothrdquo type fins The inside surface has helical grooves to induce a swirling motion in the chilled water which improves heat transfer efficiency

Air Cooled CondenserCondenser coils are constructed from copper tubes with spiral bull grooves on their inside surface to maximize heat transfer efficiency Aluminum condenser fins have a corrosion resistant and hydrophilic coating to minimize dust and moisture accumulation and ensure a long working life The fins have rippled and louvered surfaces to improve heat dissipation efficiency Each condenser section comprises 4 coils in a

reversed M arrangement which ensures that at least 3 coils are always shaded from direct solar r a d i a t i o n a n d c a n t h e re f o re operate satisfactorily in ambient temperature up to 52˚C (125˚F)

Condenser fans are axial type using high strength pressed and bull formed aluminum alloy fan blades mechanically attached to rustless steel fan hubs Fan motors are waterproof rated to IP-54 with class lsquoFrsquo insulation suitable for operation in temperatures from -20˚c to 65˚c (-4˚F to 150˚F)

Electronic Expansion ValveThis is a standard feature on each refrigeration circuit on all Model SA liquid chillers Electronic expansion valves ensure stable operation throughout their operating range and precisely

control the refrigerant flow through the cooler The very low pressure losses associated with electronic expansion v a l v e s e n s u r e s t h a t f u l l operating cost savings can be achieved during cooler seasons when ambient temperatures and condensing pressures are reduced

EconomizerThis is a standard feature of all Model SA liquid chillers Economizers improve the efficiency of the compressor and refrigeration system and increase the capacity of the chiller

Control CenterAll SA liquid chillers are bull equipped with a factory fitted and wired control center mounted on one end of the chil ler unit The high voltage section incorporates compressor and fan contractors and safety controls and is protected by a door interlocked isolator The low voltage control section is accessed by a separate lockable door and houses the microprocessor controller and LED screen displaying operating and historical date

For high ambient units a double panel (panel within a panel) bull arrangement is used with thermostatically controlled fans to

ventilate the inter-panel space and prevent ldquosun-bakingrdquo in tropical areas causing excessively high temperatures inside the panel

LS Air-Cooled Screw Chillers 04

Factory Options

Remote Monitoring SystemA remote monitoring system is available as an accessory for field installation

Vibration IsolatorsA feature of all Model SA chillers is their very low levels of noise and vibration For most outdoor installations where chillers are positioned directly on a ground level concrete slab chillers can be quite satisfactorily mounted on the neoprene isolation pads that are supplied with the unit For installation on building roofs or in sensitive noise areas (hospitals studios and some residential areas) pre selected spring type isolators are available as a factory option ndash shipped loose for field installation

High Static Condenser Fans These are available for certain models to provide increased airflow over condenser coils and increased cooling capacity or increased static pressure in installations where exhaust air has to be ducted away from the chiller Specific performance data and costs can be provided for this option on application to LS Air Conditioning Co

Anti- Freeze HeatersFor installations where ambient temperatures can fall to 0˚c or below factory installed and thermostatically controlled heater mats are available as an accessory to prevent freezing of water inside the cooler tubes and waterboxes

Optimisation Main Auxiliary Unit For multi chiller installations an optional ldquoMaster Controllerrdquo can be factory fitted to one of the chillers This ldquoMaster Controllerrdquo will sequence up to four additional ldquoSlaverdquo chillers to optimize chiller running hoursrsquo and energy consumption

Multi-compressor OptionModels SA125 and SA150 are also available with 2-compressor and refrigeration circuits

ESD(Energy Saving Drive) Reduce Energy UseThe energy saving drive (ESD) technology revolutionized the performance of air cooled chillers ESD is a complete and high-quality device with a variable frequency drive inside By modulating the frequency of the input power it can always match chiller capacity to the building load and significantly lower energy consumption And if an ESD is installed in the constant-speed chiller almost 20 of the energy will be saved

This graph shows typical energy savings when an ESD is installed on a constant speed chiller

Reduce electrical demand chargesAlong with lowering energy consumption an ESD delivers other cost saving benefits like the possible elimination of electrical demand charges Electrical demand charges may be reduced because the motor will always start at low frequencies and maintain inrush current at or below full load amps And the electronics and circuitry can be designed for Minimum Current Amps which reduces the size and cost of chiller wiring

Reduce Motor StressAnother important benefit of an ESD installation is that it reduces stress on your chillerrsquos motor Unlike conventional motor starters an ESD avoids the sudden current surges that shock motors and drives during start-up Starting the compressor slowly and then bringing it up to speed gradually reduces equipment stress

13

11

09

07

05

03100 75 50 25

KWt

on

Load ()

ESDNon-ESD

LS Air-Cooled Screw Chillers 05

Physical Data - High Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 263 3447 4433 5196 608 689 788 8866 9243 10337 11323 12426

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 1156 1501 1935 2261 2742 3021 3436 387 4274 4521 4956 5426

Normal running current(A) 2339 2861 3672 4303 5218 5722 6533 7344 7626 8583 9394 10172

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 1084 1393 1791 2081 2526 2805 3184 3582 3986 4197 4596 5066

Oil charge liters 20 23 28 28 2323 2323 2328 2828 2828 282828 282828 282828

Air cooled condenser

Fan motor type Axial

Quantity of fan motor 4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 18 18 18 18 18 18 18 18 18 18 18 18

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 46 591 76 891 1042 1181 1351 152 1584 1772 1941 213

Water resistance(kPa) 50 50 55 55 55 60 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 165 220 275 330 185185 210210 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3464 4159 4557 5380 6253 7462 7615 7868 8340 9118 9726 10018

Operating weight of unit(kg) 3727 4519 4964 5835 6711 8010 8172 8444 9021 9839 10495 10810

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 46˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 06

Physical Data - Standard Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 2632 3519 4627 5351 5912 7038 8146 8619 9254 10557 1137 11975

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 829 1104 1451 1679 1868 2208 2555 2708 2902 3312 3569 3896

Normal running current(A) 1508 204 2624 3073 3532 408 4664 4954 5248 612 6704 7084

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 765 1008 1323 1519 1676 2016 2331 2452 2646 3024 3249 3576

Oil charge liters 15 23 23 28 1818 2323 2323 2323 2828 232323 232323 232328

Air cooled condenser

Fan motor type Axial

Quantity of fan motor

4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 16 16 16 16 16 16 16 16 16 16 16 16

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 451 612 793 917 1042 1224 1396 1477 1586 1809 1999 2127

Water resistance(kPa)

50 50 55 55 58 58 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 130 215 250 300 175175 185185 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3424 4219 4476 5355 6173 7402 7504 7706 7889 9058 9585 10018

Operating weight of unit(kg) 3687 4489 4883 5810 6631 7950 8061 8282 8570 9779 10354 10665

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 35˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 07

Ratings - High Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

5 299 69 297 74 272 78 262 83 252 107 232 112

7 319 72 308 77 290 81 280 86 263 116 250 116

10 339 76 332 80 320 85 309 90 289 117 278 121

12 348 78 334 83 328 88 317 93 306 120 295 125

15 357 80 344 86 335 92 322 96 311 125 309 130

SA100

5 392 93 385 99 375 105 362 111 332 137 309 143

7 409 97 392 109 380 119 367 145 345 150 332 148

10 421 102 403 112 391 125 376 150 353 152 349 156

12 439 105 420 115 406 138 388 153 376 154 382 161

15 450 109 439 120 423 142 398 156 388 161 393 167

SA125

5 496 111 475 119 451 126 435 372 422 162 393 168

7 529 116 507 124 481 131 465 398 443 194 423 175

10 578 122 557 129 531 138 513 440 491 206 470 183

12 612 126 590 134 561 142 543 465 519 212 499 190

15 661 131 636 139 606 148 586 502 560 219 539 197

SA150

5 622 152 596 162 566 172 545 182 492 214 458 199

7 662 158 636 168 603 178 582 188 520 226 492 206

10 725 166 698 177 664 188 642 198 582 233 547 217

12 767 172 739 183 702 194 680 205 616 240 581 224

15 827 178 797 189 759 202 733 213 665 249 627 233

SA170

5 689 185 660 197 662 208 604 206 579 264 539 275

7 704 192 675 204 645 216 626 213 608 274 579 285

10 724 202 694 214 677 227 642 224 626 287 644 300

12 750 208 719 221 692 235 684 231 645 297 684 310

15 788 216 733 229 728 245 704 241 663 310 738 322

SA210

5 758 202 790 215 710 228 692 239 666 296 614 309

7 778 210 743 223 730 237 702 248 689 307 667 320

10 801 221 776 235 741 249 721 260 709 323 701 336

12 817 228 799 243 782 258 751 269 735 334 727 348

15 997 237 956 252 907 268 773 280 842 346 840 362

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 08

Ratings - High Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA225

5 958 267 973 278 992 289 821 298 768 335 745 317

7 978 296 993 309 1012 321 838 331 787 344 760 352

10 1163 299 1181 312 1204 324 997 335 936 351 904 356

12 1232 305 1251 319 1275 331 1056 341 994 357 958 363

15 1330 311 1350 325 1376 337 1140 348 1073 370 1034 370

SA250

5 1077 300 1094 313 1115 325 923 335 869 348 745 356

7 1099 333 1116 348 1138 361 942 372 887 387 760 396

10 1308 336 1328 351 1354 365 1121 376 1056 391 904 400

12 1385 343 1406 358 1433 372 1187 384 1118 399 958 408

15 1495 350 1518 365 1547 379 1281 391 1206 406 1034 416

SA270

5 1145 256 1096 272 1041 313 1005 304 932 383 901 400

7 1220 265 1171 281 1111 325 1074 316 924 427 968 414

10 1335 278 1286 296 1224 341 1184 332 1104 418 1076 434

12 1413 288 1361 303 1295 353 1253 343 1168 432 1143 450

15 1526 388 1470 316 1397 367 1353 356 1260 448 1233 467

SA300

5 1243 307 1191 323 1131 343 1077 365 1000 460 966 479

7 1325 319 1272 335 1206 356 1152 379 1034 452 1038 497

10 1450 334 1396 353 1329 374 1269 398 1184 501 1154 522

12 1534 376 1477 364 1406 387 1345 411 1252 518 1226 540

15 1656 391 1596 379 1518 402 1451 426 1352 539 1323 560

SA325

5 1380 384 1402 401 1429 417 1183 430 1109 446 745 457

7 1408 427 1430 446 1458 463 1207 477 1132 496 760 508

10 1676 431 1702 450 1735 467 1437 482 1347 501 904 513

12 1775 440 1802 459 1837 477 1521 492 1426 511 958 523

15 1915 448 1945 468 1983 486 1642 501 1540 521 1034 533

SA350

5 1511 421 1534 439 1564 456 1295 470 1218 489 745 500

7 1542 467 1566 488 1596 507 1322 522 1243 543 760 556

10 1835 472 1863 493 1899 512 1573 528 1479 548 904 561

12 1943 481 1973 502 2011 522 1666 538 1566 559 958 572

15 2097 491 2129 512 2171 532 1798 549 1690 570 1034 583

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling Factor is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 09

Ratings - Standard Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

45 263 71 295 75 240 80 232 84 212 105 196 108

5 272 72 303 76 247 81 238 85 220 106 202 111

6 280 72 314 77 255 81 246 87 227 106 210 112

7 290 74 325 79 263 83 255 89 235 109 218 115

10 316 78 355 82 291 88 281 93 260 115 241 120

12 335 81 286 85 307 91 297 96 275 119 257 124

15 361 82 286 89 332 95 320 99 296 124 277 128

SA100

45 335 93 343 336 327 105 315 111 289 138 269 143

5 363 94 348 341 330 106 319 112 291 139 272 144

6 374 96 359 352 341 108 330 113 301 140 282 146

7 386 98 371 364 352 110 341 116 314 143 291 149

10 424 103 407 400 388 116 374 122 346 151 326 157

12 448 106 432 423 410 119 399 127 366 155 345 164

15 483 110 465 457 443 123 430 132 394 164 372 169

SA125

45 473 123 453 130 429 139 414 407 403 178 374 186

5 477 123 457 131 434 140 419 411 406 179 379 187

6 493 125 473 133 448 142 434 424 421 181 392 190

7 508 128 488 137 463 145 447 440 435 186 407 194

10 557 134 535 143 510 152 494 486 482 194 452 202

12 589 140 568 148 538 157 522 514 508 200 480 210

15 636 145 612 153 582 164 564 555 549 208 518 217

SA150

45 546 143 523 153 498 162 477 170 431 201 402 187

5 551 144 529 154 503 163 483 172 436 201 407 188

6 569 146 546 155 519 164 502 173 451 205 421 191

7 588 150 564 159 535 168 517 178 468 210 436 194

10 643 157 620 167 589 178 570 187 517 220 485 205

12 681 163 656 173 624 183 604 193 547 227 515 211

15 734 168 707 179 673 191 651 201 590 236 555 220

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 10

Ratings - Standard Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA170

45 571 159 547 171 547 179 501 177 477 227 445 236

5 576 159 553 170 554 180 506 178 485 229 451 238

6 596 162 571 173 571 182 524 180 501 232 468 242

7 614 166 591 177 591 187 541 184 519 234 485 246

10 673 175 649 185 650 196 596 194 574 248 539 259

12 711 180 685 192 689 203 631 200 607 257 572 268

15 768 187 739 198 742 211 681 209 655 268 617 278

SA210

45 718 188 688 201 653 213 629 222 580 276 534 288

5 724 189 695 202 659 214 635 223 586 276 540 289

6 749 192 718 204 682 216 658 228 606 281 565 292

7 773 197 741 208 704 221 680 232 628 287 587 299

10 846 206 814 219 775 233 750 243 694 302 651 315

12 895 214 862 228 820 241 793 251 734 313 692 325

15 965 221 929 236 886 250 856 262 820 323 749 338

SA270

45 992 241 952 257 905 294 873 287 809 360 782 374

5 1004 242 962 257 913 296 882 288 817 363 791 378

6 1038 245 993 261 944 300 912 292 845 367 818 383

7 1070 250 1029 266 975 307 942 298 876 374 849 392

10 1172 263 1129 279 1074 322 1039 314 969 395 944 411

12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424

15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442

SA320

45 1091 288 1047 304 994 323 947 344 878 434 849 452

5 1102 290 1056 306 1003 325 956 346 887 437 857 455

6 1138 295 1091 311 1038 330 990 351 916 443 888 462

7 1175 302 1128 318 1070 338 1021 359 950 448 921 471

10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495

12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512

15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 11

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

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27XC

AUX

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30SV

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25

31SV

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75

32SV

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50

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CUIT

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DD

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ID V

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42PB

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1 2 43NOTE

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S

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ON

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MT

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MT

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S M

CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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P

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SS

X0X1

X2X3

X4X5

X6X7

IN

24V

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LDVP

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HP LP

OL

OP

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121

FG1

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340

2

3 4

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E

120

OUT

C0Y0

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Y3Y7

Y6Y5

DVP

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N

Y4

224

225

226

COM

D24

1C1B

1A

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2C2B

2A

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3C3B

3A4C

4B4A

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COM

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COM

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1

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COM

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85

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227

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122

123

124

112

113

HP LP

OL

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125

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78 AI

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501

502

503

504

505

506

507

508EK

D

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KM2

341 -B

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402

401

403

404

KM2

KM2

406

405

408

407

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T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

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123

2

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301

230

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107

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106

107

E

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101

102

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103

PU

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231

232

230

231

232

230

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5

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305

306

123

R2R2

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KM1

KM3

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304

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124

D24

E

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AIG

AI6

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123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

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410

TO P

LC

D24

125

CH

AO2

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411

230

231

232

233

FANS

RUN

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237

234

KM1

KM2

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EC

235

236

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240

241

242

243

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1SV

3SV

2

244

245

246

247

FANS

RUN

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233

233

233

247 24

7

247

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(ETS

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FRO

M P

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PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

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S M

CC

CONT

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NL

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TER P

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24XC

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25PY

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25

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75

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50

30HQ

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TER

31FA

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32M

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35V0

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37EK

DD

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-ETS

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39

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1 2 43NOTE

SUPP

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LOCA

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ON C

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ODY

FROM

TO

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TER

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L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

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AX

AWAV

AU

R2

PB

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380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

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F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

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-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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-B

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-B

AU AV AW

122

D24 T2R2

M2

M1 NL

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MP-

A

L3L2

BU BV BW

127

D24 T2R2

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M1 NL

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MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

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88F

7-A

88F

1-B

331

329

51F1

51F3

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88F

3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

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B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

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F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

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F3

AV3

AW3

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F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

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F1

BU1 FM

1-B

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F1

BV1

BW1

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F2

BU2 FM

2-B

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F2

BV2

BW2

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F3

BU3 FM

3-B

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F3

BV3

BW3

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F4

BU4 FM

4-B

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F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

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MP

301

301

230 23

123

223

323

0

231

232

233

230

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123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

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MP

304

304

244 24

524

624

724

4

245

246

247

244

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130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

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CT-A

AI7

T2

BC2

BC1

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CT-B

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T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

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380V

AC 5

060

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TO C

ONT

ROL

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L

3

FRO

MT

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ONT

ROL

PANE

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2

THE

SE PA

RTS

ARE

LOCA

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ON

CHIL

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Note

1

T

HESE

PART

S AR

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CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

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OP

SGL

EMER

GERN

CYAB

NORM

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MOT

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POW

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ANSD

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SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

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F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

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88F

3-C

88F

5-C

51F5

51F6

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88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

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R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

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TRAN

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1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

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24RS

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HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

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T20

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B10

A

FAN

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340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

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SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Introduction

LS air-cooled water chillers are complete self-contained automatic refrigerating units that include the latest in

engineering components arranged to provide a compact and efficient unit Each unit is completely assembled

factory wired evacuated charged tested and comes complete and ready for installation Each unit consists of

multiple air-cooled condensers with integral sub-cooler sections one or more accessible semi-hermetic double-

screw compressors star-delta starters flooded type shell-and-tube evaporator and complete refrigerant piping

Liquid line components included are manual liquid line shutoff valves charging valves filter-driers liquid line

solenoid valves sight glassmoisture indicators and electronic expansion valves

Inspection When the equipment is received all items should be carefully checked against the bill of lading to ensure a

complete shipment All units should be carefully inspected for damage upon arrival The unitrsquos serial plate should

be checked before unloading the unit to be sure that it agrees with the power supply available Physical damage to

unit after acceptance is not the responsibility of LS Company

General Description

Nomenclature

S A X X X C S A H - 3 Y FEvaporator type F-flooded

Start mode Y-Δ

Power 3-380V 50Hz 4-415V 50Hz 5-440V 50Hz 6 -380V 60Hz

H-high ambient S-standard ambient

Refrigerant A-R134a

Modules S-single D-double T-triple

Chiller type C-cooled water chiller

Capacity (RT)

Cooling mode Air cooled

Compressor type Semi-hermetic screw

LS Air-Cooled Screw Chillers 02

Compressor

Type The semi-hermetic twin screw compressor used in Model SA liquid chillers has the advantage of hermetically sealing the refrigerant and lubricating oil inside the compressor while allowing technicians access to service and repair internal moving parts Capacity Control Is achieved using a slide valve which automatically modulates compressor capacity in 4 steps 25 50 75 and 100 with equivalent reductions in energy consumption Compressor Starting The compressor starts fully unloaded using the star-delta (YΔ) method to minimize starting current inrush Compressor Characteristics Using the optimum screw rotor profile and precision machining of all components achieves minimum operating clearances to ensure the highest volumetric and compression efficiency and minimum friction

and windage losses The nodular cast iron compressor casing encloses compressor electric motor and oil separator in a single accessible housing ensuring the minimum levels of noise breakout and vibration This rugged structure ensures stable and reliable operation in ambient temperatures ranging from -15 to +55˚c

Cooler

All SA liquid chillers are fitted with a single cooler of the bull ldquoFloodedrdquo shell and tube type having refrigerant in the shell and chilled water inside the tubes The shell is of welded alloy steel construction with steel tube sheets and copper heat exchange tubes Removable steel water boxes at both ends of the cooler allow tube cleaning without disturbing the refrigerant circuit Tubes are mechanically expanded into tube sheets with double grooves to ensure leak tight and trouble free operation Multiple compressor circuit chillers have coolers with separate refrigeration circuits for each compressor Each refrigeration circuit is provided with its own double safety

Specifications

System Flow Chart

Note This is the flow chart of single refrigerant circuit type of air-cooled screw liquid chiller For multi refrigerant circuit chillers each compressor has its own separate circuit as above

LS Air-Cooled Screw Chillers 03

Specifications (Continued)

pressure relief valve All chillers are fitted with drain valves on the removable heads and shell All coolers are factory insulated with 25mm of closed cell expanded synthetic rubber with all joints vapor sealed Coolers are designed in accordance with ASME guidelines and are rated according to the following pressures

REFRIGERANT SIDE WATER SIDE

KgSq cm LbsSq cm KgSq Inch LbsSq Inch

DESIGN PRESSURE 16 230 105 145

TEST PRESSURE 18 260 125 180

High efficiency heat transfer bull tubes are used in Model SA coolers having the external ( re f r igerant s ide) sur face expanded with ldquosaw toothrdquo type fins The inside surface has helical grooves to induce a swirling motion in the chilled water which improves heat transfer efficiency

Air Cooled CondenserCondenser coils are constructed from copper tubes with spiral bull grooves on their inside surface to maximize heat transfer efficiency Aluminum condenser fins have a corrosion resistant and hydrophilic coating to minimize dust and moisture accumulation and ensure a long working life The fins have rippled and louvered surfaces to improve heat dissipation efficiency Each condenser section comprises 4 coils in a

reversed M arrangement which ensures that at least 3 coils are always shaded from direct solar r a d i a t i o n a n d c a n t h e re f o re operate satisfactorily in ambient temperature up to 52˚C (125˚F)

Condenser fans are axial type using high strength pressed and bull formed aluminum alloy fan blades mechanically attached to rustless steel fan hubs Fan motors are waterproof rated to IP-54 with class lsquoFrsquo insulation suitable for operation in temperatures from -20˚c to 65˚c (-4˚F to 150˚F)

Electronic Expansion ValveThis is a standard feature on each refrigeration circuit on all Model SA liquid chillers Electronic expansion valves ensure stable operation throughout their operating range and precisely

control the refrigerant flow through the cooler The very low pressure losses associated with electronic expansion v a l v e s e n s u r e s t h a t f u l l operating cost savings can be achieved during cooler seasons when ambient temperatures and condensing pressures are reduced

EconomizerThis is a standard feature of all Model SA liquid chillers Economizers improve the efficiency of the compressor and refrigeration system and increase the capacity of the chiller

Control CenterAll SA liquid chillers are bull equipped with a factory fitted and wired control center mounted on one end of the chil ler unit The high voltage section incorporates compressor and fan contractors and safety controls and is protected by a door interlocked isolator The low voltage control section is accessed by a separate lockable door and houses the microprocessor controller and LED screen displaying operating and historical date

For high ambient units a double panel (panel within a panel) bull arrangement is used with thermostatically controlled fans to

ventilate the inter-panel space and prevent ldquosun-bakingrdquo in tropical areas causing excessively high temperatures inside the panel

LS Air-Cooled Screw Chillers 04

Factory Options

Remote Monitoring SystemA remote monitoring system is available as an accessory for field installation

Vibration IsolatorsA feature of all Model SA chillers is their very low levels of noise and vibration For most outdoor installations where chillers are positioned directly on a ground level concrete slab chillers can be quite satisfactorily mounted on the neoprene isolation pads that are supplied with the unit For installation on building roofs or in sensitive noise areas (hospitals studios and some residential areas) pre selected spring type isolators are available as a factory option ndash shipped loose for field installation

High Static Condenser Fans These are available for certain models to provide increased airflow over condenser coils and increased cooling capacity or increased static pressure in installations where exhaust air has to be ducted away from the chiller Specific performance data and costs can be provided for this option on application to LS Air Conditioning Co

Anti- Freeze HeatersFor installations where ambient temperatures can fall to 0˚c or below factory installed and thermostatically controlled heater mats are available as an accessory to prevent freezing of water inside the cooler tubes and waterboxes

Optimisation Main Auxiliary Unit For multi chiller installations an optional ldquoMaster Controllerrdquo can be factory fitted to one of the chillers This ldquoMaster Controllerrdquo will sequence up to four additional ldquoSlaverdquo chillers to optimize chiller running hoursrsquo and energy consumption

Multi-compressor OptionModels SA125 and SA150 are also available with 2-compressor and refrigeration circuits

ESD(Energy Saving Drive) Reduce Energy UseThe energy saving drive (ESD) technology revolutionized the performance of air cooled chillers ESD is a complete and high-quality device with a variable frequency drive inside By modulating the frequency of the input power it can always match chiller capacity to the building load and significantly lower energy consumption And if an ESD is installed in the constant-speed chiller almost 20 of the energy will be saved

This graph shows typical energy savings when an ESD is installed on a constant speed chiller

Reduce electrical demand chargesAlong with lowering energy consumption an ESD delivers other cost saving benefits like the possible elimination of electrical demand charges Electrical demand charges may be reduced because the motor will always start at low frequencies and maintain inrush current at or below full load amps And the electronics and circuitry can be designed for Minimum Current Amps which reduces the size and cost of chiller wiring

Reduce Motor StressAnother important benefit of an ESD installation is that it reduces stress on your chillerrsquos motor Unlike conventional motor starters an ESD avoids the sudden current surges that shock motors and drives during start-up Starting the compressor slowly and then bringing it up to speed gradually reduces equipment stress

13

11

09

07

05

03100 75 50 25

KWt

on

Load ()

ESDNon-ESD

LS Air-Cooled Screw Chillers 05

Physical Data - High Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 263 3447 4433 5196 608 689 788 8866 9243 10337 11323 12426

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 1156 1501 1935 2261 2742 3021 3436 387 4274 4521 4956 5426

Normal running current(A) 2339 2861 3672 4303 5218 5722 6533 7344 7626 8583 9394 10172

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 1084 1393 1791 2081 2526 2805 3184 3582 3986 4197 4596 5066

Oil charge liters 20 23 28 28 2323 2323 2328 2828 2828 282828 282828 282828

Air cooled condenser

Fan motor type Axial

Quantity of fan motor 4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 18 18 18 18 18 18 18 18 18 18 18 18

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 46 591 76 891 1042 1181 1351 152 1584 1772 1941 213

Water resistance(kPa) 50 50 55 55 55 60 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 165 220 275 330 185185 210210 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3464 4159 4557 5380 6253 7462 7615 7868 8340 9118 9726 10018

Operating weight of unit(kg) 3727 4519 4964 5835 6711 8010 8172 8444 9021 9839 10495 10810

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 46˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 06

Physical Data - Standard Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 2632 3519 4627 5351 5912 7038 8146 8619 9254 10557 1137 11975

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 829 1104 1451 1679 1868 2208 2555 2708 2902 3312 3569 3896

Normal running current(A) 1508 204 2624 3073 3532 408 4664 4954 5248 612 6704 7084

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 765 1008 1323 1519 1676 2016 2331 2452 2646 3024 3249 3576

Oil charge liters 15 23 23 28 1818 2323 2323 2323 2828 232323 232323 232328

Air cooled condenser

Fan motor type Axial

Quantity of fan motor

4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 16 16 16 16 16 16 16 16 16 16 16 16

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 451 612 793 917 1042 1224 1396 1477 1586 1809 1999 2127

Water resistance(kPa)

50 50 55 55 58 58 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 130 215 250 300 175175 185185 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3424 4219 4476 5355 6173 7402 7504 7706 7889 9058 9585 10018

Operating weight of unit(kg) 3687 4489 4883 5810 6631 7950 8061 8282 8570 9779 10354 10665

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 35˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 07

Ratings - High Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

5 299 69 297 74 272 78 262 83 252 107 232 112

7 319 72 308 77 290 81 280 86 263 116 250 116

10 339 76 332 80 320 85 309 90 289 117 278 121

12 348 78 334 83 328 88 317 93 306 120 295 125

15 357 80 344 86 335 92 322 96 311 125 309 130

SA100

5 392 93 385 99 375 105 362 111 332 137 309 143

7 409 97 392 109 380 119 367 145 345 150 332 148

10 421 102 403 112 391 125 376 150 353 152 349 156

12 439 105 420 115 406 138 388 153 376 154 382 161

15 450 109 439 120 423 142 398 156 388 161 393 167

SA125

5 496 111 475 119 451 126 435 372 422 162 393 168

7 529 116 507 124 481 131 465 398 443 194 423 175

10 578 122 557 129 531 138 513 440 491 206 470 183

12 612 126 590 134 561 142 543 465 519 212 499 190

15 661 131 636 139 606 148 586 502 560 219 539 197

SA150

5 622 152 596 162 566 172 545 182 492 214 458 199

7 662 158 636 168 603 178 582 188 520 226 492 206

10 725 166 698 177 664 188 642 198 582 233 547 217

12 767 172 739 183 702 194 680 205 616 240 581 224

15 827 178 797 189 759 202 733 213 665 249 627 233

SA170

5 689 185 660 197 662 208 604 206 579 264 539 275

7 704 192 675 204 645 216 626 213 608 274 579 285

10 724 202 694 214 677 227 642 224 626 287 644 300

12 750 208 719 221 692 235 684 231 645 297 684 310

15 788 216 733 229 728 245 704 241 663 310 738 322

SA210

5 758 202 790 215 710 228 692 239 666 296 614 309

7 778 210 743 223 730 237 702 248 689 307 667 320

10 801 221 776 235 741 249 721 260 709 323 701 336

12 817 228 799 243 782 258 751 269 735 334 727 348

15 997 237 956 252 907 268 773 280 842 346 840 362

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 08

Ratings - High Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA225

5 958 267 973 278 992 289 821 298 768 335 745 317

7 978 296 993 309 1012 321 838 331 787 344 760 352

10 1163 299 1181 312 1204 324 997 335 936 351 904 356

12 1232 305 1251 319 1275 331 1056 341 994 357 958 363

15 1330 311 1350 325 1376 337 1140 348 1073 370 1034 370

SA250

5 1077 300 1094 313 1115 325 923 335 869 348 745 356

7 1099 333 1116 348 1138 361 942 372 887 387 760 396

10 1308 336 1328 351 1354 365 1121 376 1056 391 904 400

12 1385 343 1406 358 1433 372 1187 384 1118 399 958 408

15 1495 350 1518 365 1547 379 1281 391 1206 406 1034 416

SA270

5 1145 256 1096 272 1041 313 1005 304 932 383 901 400

7 1220 265 1171 281 1111 325 1074 316 924 427 968 414

10 1335 278 1286 296 1224 341 1184 332 1104 418 1076 434

12 1413 288 1361 303 1295 353 1253 343 1168 432 1143 450

15 1526 388 1470 316 1397 367 1353 356 1260 448 1233 467

SA300

5 1243 307 1191 323 1131 343 1077 365 1000 460 966 479

7 1325 319 1272 335 1206 356 1152 379 1034 452 1038 497

10 1450 334 1396 353 1329 374 1269 398 1184 501 1154 522

12 1534 376 1477 364 1406 387 1345 411 1252 518 1226 540

15 1656 391 1596 379 1518 402 1451 426 1352 539 1323 560

SA325

5 1380 384 1402 401 1429 417 1183 430 1109 446 745 457

7 1408 427 1430 446 1458 463 1207 477 1132 496 760 508

10 1676 431 1702 450 1735 467 1437 482 1347 501 904 513

12 1775 440 1802 459 1837 477 1521 492 1426 511 958 523

15 1915 448 1945 468 1983 486 1642 501 1540 521 1034 533

SA350

5 1511 421 1534 439 1564 456 1295 470 1218 489 745 500

7 1542 467 1566 488 1596 507 1322 522 1243 543 760 556

10 1835 472 1863 493 1899 512 1573 528 1479 548 904 561

12 1943 481 1973 502 2011 522 1666 538 1566 559 958 572

15 2097 491 2129 512 2171 532 1798 549 1690 570 1034 583

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling Factor is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 09

Ratings - Standard Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

45 263 71 295 75 240 80 232 84 212 105 196 108

5 272 72 303 76 247 81 238 85 220 106 202 111

6 280 72 314 77 255 81 246 87 227 106 210 112

7 290 74 325 79 263 83 255 89 235 109 218 115

10 316 78 355 82 291 88 281 93 260 115 241 120

12 335 81 286 85 307 91 297 96 275 119 257 124

15 361 82 286 89 332 95 320 99 296 124 277 128

SA100

45 335 93 343 336 327 105 315 111 289 138 269 143

5 363 94 348 341 330 106 319 112 291 139 272 144

6 374 96 359 352 341 108 330 113 301 140 282 146

7 386 98 371 364 352 110 341 116 314 143 291 149

10 424 103 407 400 388 116 374 122 346 151 326 157

12 448 106 432 423 410 119 399 127 366 155 345 164

15 483 110 465 457 443 123 430 132 394 164 372 169

SA125

45 473 123 453 130 429 139 414 407 403 178 374 186

5 477 123 457 131 434 140 419 411 406 179 379 187

6 493 125 473 133 448 142 434 424 421 181 392 190

7 508 128 488 137 463 145 447 440 435 186 407 194

10 557 134 535 143 510 152 494 486 482 194 452 202

12 589 140 568 148 538 157 522 514 508 200 480 210

15 636 145 612 153 582 164 564 555 549 208 518 217

SA150

45 546 143 523 153 498 162 477 170 431 201 402 187

5 551 144 529 154 503 163 483 172 436 201 407 188

6 569 146 546 155 519 164 502 173 451 205 421 191

7 588 150 564 159 535 168 517 178 468 210 436 194

10 643 157 620 167 589 178 570 187 517 220 485 205

12 681 163 656 173 624 183 604 193 547 227 515 211

15 734 168 707 179 673 191 651 201 590 236 555 220

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 10

Ratings - Standard Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA170

45 571 159 547 171 547 179 501 177 477 227 445 236

5 576 159 553 170 554 180 506 178 485 229 451 238

6 596 162 571 173 571 182 524 180 501 232 468 242

7 614 166 591 177 591 187 541 184 519 234 485 246

10 673 175 649 185 650 196 596 194 574 248 539 259

12 711 180 685 192 689 203 631 200 607 257 572 268

15 768 187 739 198 742 211 681 209 655 268 617 278

SA210

45 718 188 688 201 653 213 629 222 580 276 534 288

5 724 189 695 202 659 214 635 223 586 276 540 289

6 749 192 718 204 682 216 658 228 606 281 565 292

7 773 197 741 208 704 221 680 232 628 287 587 299

10 846 206 814 219 775 233 750 243 694 302 651 315

12 895 214 862 228 820 241 793 251 734 313 692 325

15 965 221 929 236 886 250 856 262 820 323 749 338

SA270

45 992 241 952 257 905 294 873 287 809 360 782 374

5 1004 242 962 257 913 296 882 288 817 363 791 378

6 1038 245 993 261 944 300 912 292 845 367 818 383

7 1070 250 1029 266 975 307 942 298 876 374 849 392

10 1172 263 1129 279 1074 322 1039 314 969 395 944 411

12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424

15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442

SA320

45 1091 288 1047 304 994 323 947 344 878 434 849 452

5 1102 290 1056 306 1003 325 956 346 887 437 857 455

6 1138 295 1091 311 1038 330 990 351 916 443 888 462

7 1175 302 1128 318 1070 338 1021 359 950 448 921 471

10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495

12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512

15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 11

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

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D S

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VAL

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29ET

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ECTR

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30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

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ID V

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75

32SV

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ID V

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50

33HQ

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34FA

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35M

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CASE

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CUIT

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36N

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38V0

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40EK

DD

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SO

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ID V

ALVE

42PB

EMER

GERN

CY S

TOP

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CH

1 2 43NOTE

SUPP

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BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

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NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

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24RS

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HP LP

OL

OP

MP

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VP

121

FG1

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HQ

R20

T20

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B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

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E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

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L+FG

I-L-

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L+L-

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CH3

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CH4

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78 AI

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ACH

1

COM

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0V24

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COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

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DVP

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AIN

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G

OUT

SS C0

X0X1

X2X3

Y0C1

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85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

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122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

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125

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2-A

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PY -ASV

1-A

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3-A

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C0Y0

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78 AI

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TE04

TE07

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56

78

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56

78

ETS

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26+

20

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501

502

503

504

505

506

507

508EK

D

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KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

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MP

301

230

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107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

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MP

304

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124

D24

E

-B

AIG

AI6

AI6

AIG AI

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6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

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410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

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-B-B

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240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

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-B-B

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233

233

233

247 24

7

247

FAN

FAN

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R2R0

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2

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PB

EE

E

D24

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PH 2

20VA

C 50

60H

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(ETS

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TO E

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(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

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ING

STOP

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ELAB

NORM

AL-A

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SDUC

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LCU

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T-A

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TART

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CONT

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R

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R

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PM

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R PR

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LAY

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PER

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10O

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11TE

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ATUR

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0

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0

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0

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0

19EP

EVAP

PRES

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NSMI

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20CP

COND

PRES

SURE

TRA

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21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

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E

26ET

SEL

ECTR

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N

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27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

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ID V

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75

29SV

3SO

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ID V

ALVE

50

30HQ

OIL

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TER

31FA

NCO

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NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

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33N

FNO

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ER

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SE

35V0

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RIST

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36TR

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37EK

DD

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-ETS

38EC

ECON

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R SOL

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D VA

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39

PBEM

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RNCY

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1 2 43NOTE

SUPP

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BY U

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LOCA

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ON C

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ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

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88F

7-A

88F

1-B

331

329

51F1

51F3

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88F

3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

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B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

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F1

BU1 FM

1-B

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F1

BV1

BW1

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F2

BU2 FM

2-B

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F2

BV2

BW2

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F3

BU3 FM

3-B

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F3

BV3

BW3

-B88

F4

BU4 FM

4-B

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F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

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123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

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CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

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SUP

PLY

TO C

ONT

ROL

PANE

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3

FRO

MT

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ONT

ROL

PANE

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2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

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BODY

Note

1

T

HESE

PART

S AR

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CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

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OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

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ANSD

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SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

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88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

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R

8IT

AMPE

RE T

RANS

DUC

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9CT

CURR

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TRAN

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1088

F1-8

MAG

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C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

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24RS

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HP LP

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MP

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125

FG1

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B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

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SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Compressor

Type The semi-hermetic twin screw compressor used in Model SA liquid chillers has the advantage of hermetically sealing the refrigerant and lubricating oil inside the compressor while allowing technicians access to service and repair internal moving parts Capacity Control Is achieved using a slide valve which automatically modulates compressor capacity in 4 steps 25 50 75 and 100 with equivalent reductions in energy consumption Compressor Starting The compressor starts fully unloaded using the star-delta (YΔ) method to minimize starting current inrush Compressor Characteristics Using the optimum screw rotor profile and precision machining of all components achieves minimum operating clearances to ensure the highest volumetric and compression efficiency and minimum friction

and windage losses The nodular cast iron compressor casing encloses compressor electric motor and oil separator in a single accessible housing ensuring the minimum levels of noise breakout and vibration This rugged structure ensures stable and reliable operation in ambient temperatures ranging from -15 to +55˚c

Cooler

All SA liquid chillers are fitted with a single cooler of the bull ldquoFloodedrdquo shell and tube type having refrigerant in the shell and chilled water inside the tubes The shell is of welded alloy steel construction with steel tube sheets and copper heat exchange tubes Removable steel water boxes at both ends of the cooler allow tube cleaning without disturbing the refrigerant circuit Tubes are mechanically expanded into tube sheets with double grooves to ensure leak tight and trouble free operation Multiple compressor circuit chillers have coolers with separate refrigeration circuits for each compressor Each refrigeration circuit is provided with its own double safety

Specifications

System Flow Chart

Note This is the flow chart of single refrigerant circuit type of air-cooled screw liquid chiller For multi refrigerant circuit chillers each compressor has its own separate circuit as above

LS Air-Cooled Screw Chillers 03

Specifications (Continued)

pressure relief valve All chillers are fitted with drain valves on the removable heads and shell All coolers are factory insulated with 25mm of closed cell expanded synthetic rubber with all joints vapor sealed Coolers are designed in accordance with ASME guidelines and are rated according to the following pressures

REFRIGERANT SIDE WATER SIDE

KgSq cm LbsSq cm KgSq Inch LbsSq Inch

DESIGN PRESSURE 16 230 105 145

TEST PRESSURE 18 260 125 180

High efficiency heat transfer bull tubes are used in Model SA coolers having the external ( re f r igerant s ide) sur face expanded with ldquosaw toothrdquo type fins The inside surface has helical grooves to induce a swirling motion in the chilled water which improves heat transfer efficiency

Air Cooled CondenserCondenser coils are constructed from copper tubes with spiral bull grooves on their inside surface to maximize heat transfer efficiency Aluminum condenser fins have a corrosion resistant and hydrophilic coating to minimize dust and moisture accumulation and ensure a long working life The fins have rippled and louvered surfaces to improve heat dissipation efficiency Each condenser section comprises 4 coils in a

reversed M arrangement which ensures that at least 3 coils are always shaded from direct solar r a d i a t i o n a n d c a n t h e re f o re operate satisfactorily in ambient temperature up to 52˚C (125˚F)

Condenser fans are axial type using high strength pressed and bull formed aluminum alloy fan blades mechanically attached to rustless steel fan hubs Fan motors are waterproof rated to IP-54 with class lsquoFrsquo insulation suitable for operation in temperatures from -20˚c to 65˚c (-4˚F to 150˚F)

Electronic Expansion ValveThis is a standard feature on each refrigeration circuit on all Model SA liquid chillers Electronic expansion valves ensure stable operation throughout their operating range and precisely

control the refrigerant flow through the cooler The very low pressure losses associated with electronic expansion v a l v e s e n s u r e s t h a t f u l l operating cost savings can be achieved during cooler seasons when ambient temperatures and condensing pressures are reduced

EconomizerThis is a standard feature of all Model SA liquid chillers Economizers improve the efficiency of the compressor and refrigeration system and increase the capacity of the chiller

Control CenterAll SA liquid chillers are bull equipped with a factory fitted and wired control center mounted on one end of the chil ler unit The high voltage section incorporates compressor and fan contractors and safety controls and is protected by a door interlocked isolator The low voltage control section is accessed by a separate lockable door and houses the microprocessor controller and LED screen displaying operating and historical date

For high ambient units a double panel (panel within a panel) bull arrangement is used with thermostatically controlled fans to

ventilate the inter-panel space and prevent ldquosun-bakingrdquo in tropical areas causing excessively high temperatures inside the panel

LS Air-Cooled Screw Chillers 04

Factory Options

Remote Monitoring SystemA remote monitoring system is available as an accessory for field installation

Vibration IsolatorsA feature of all Model SA chillers is their very low levels of noise and vibration For most outdoor installations where chillers are positioned directly on a ground level concrete slab chillers can be quite satisfactorily mounted on the neoprene isolation pads that are supplied with the unit For installation on building roofs or in sensitive noise areas (hospitals studios and some residential areas) pre selected spring type isolators are available as a factory option ndash shipped loose for field installation

High Static Condenser Fans These are available for certain models to provide increased airflow over condenser coils and increased cooling capacity or increased static pressure in installations where exhaust air has to be ducted away from the chiller Specific performance data and costs can be provided for this option on application to LS Air Conditioning Co

Anti- Freeze HeatersFor installations where ambient temperatures can fall to 0˚c or below factory installed and thermostatically controlled heater mats are available as an accessory to prevent freezing of water inside the cooler tubes and waterboxes

Optimisation Main Auxiliary Unit For multi chiller installations an optional ldquoMaster Controllerrdquo can be factory fitted to one of the chillers This ldquoMaster Controllerrdquo will sequence up to four additional ldquoSlaverdquo chillers to optimize chiller running hoursrsquo and energy consumption

Multi-compressor OptionModels SA125 and SA150 are also available with 2-compressor and refrigeration circuits

ESD(Energy Saving Drive) Reduce Energy UseThe energy saving drive (ESD) technology revolutionized the performance of air cooled chillers ESD is a complete and high-quality device with a variable frequency drive inside By modulating the frequency of the input power it can always match chiller capacity to the building load and significantly lower energy consumption And if an ESD is installed in the constant-speed chiller almost 20 of the energy will be saved

This graph shows typical energy savings when an ESD is installed on a constant speed chiller

Reduce electrical demand chargesAlong with lowering energy consumption an ESD delivers other cost saving benefits like the possible elimination of electrical demand charges Electrical demand charges may be reduced because the motor will always start at low frequencies and maintain inrush current at or below full load amps And the electronics and circuitry can be designed for Minimum Current Amps which reduces the size and cost of chiller wiring

Reduce Motor StressAnother important benefit of an ESD installation is that it reduces stress on your chillerrsquos motor Unlike conventional motor starters an ESD avoids the sudden current surges that shock motors and drives during start-up Starting the compressor slowly and then bringing it up to speed gradually reduces equipment stress

13

11

09

07

05

03100 75 50 25

KWt

on

Load ()

ESDNon-ESD

LS Air-Cooled Screw Chillers 05

Physical Data - High Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 263 3447 4433 5196 608 689 788 8866 9243 10337 11323 12426

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 1156 1501 1935 2261 2742 3021 3436 387 4274 4521 4956 5426

Normal running current(A) 2339 2861 3672 4303 5218 5722 6533 7344 7626 8583 9394 10172

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 1084 1393 1791 2081 2526 2805 3184 3582 3986 4197 4596 5066

Oil charge liters 20 23 28 28 2323 2323 2328 2828 2828 282828 282828 282828

Air cooled condenser

Fan motor type Axial

Quantity of fan motor 4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 18 18 18 18 18 18 18 18 18 18 18 18

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 46 591 76 891 1042 1181 1351 152 1584 1772 1941 213

Water resistance(kPa) 50 50 55 55 55 60 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 165 220 275 330 185185 210210 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3464 4159 4557 5380 6253 7462 7615 7868 8340 9118 9726 10018

Operating weight of unit(kg) 3727 4519 4964 5835 6711 8010 8172 8444 9021 9839 10495 10810

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 46˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 06

Physical Data - Standard Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 2632 3519 4627 5351 5912 7038 8146 8619 9254 10557 1137 11975

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 829 1104 1451 1679 1868 2208 2555 2708 2902 3312 3569 3896

Normal running current(A) 1508 204 2624 3073 3532 408 4664 4954 5248 612 6704 7084

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 765 1008 1323 1519 1676 2016 2331 2452 2646 3024 3249 3576

Oil charge liters 15 23 23 28 1818 2323 2323 2323 2828 232323 232323 232328

Air cooled condenser

Fan motor type Axial

Quantity of fan motor

4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 16 16 16 16 16 16 16 16 16 16 16 16

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 451 612 793 917 1042 1224 1396 1477 1586 1809 1999 2127

Water resistance(kPa)

50 50 55 55 58 58 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 130 215 250 300 175175 185185 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3424 4219 4476 5355 6173 7402 7504 7706 7889 9058 9585 10018

Operating weight of unit(kg) 3687 4489 4883 5810 6631 7950 8061 8282 8570 9779 10354 10665

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 35˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 07

Ratings - High Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

5 299 69 297 74 272 78 262 83 252 107 232 112

7 319 72 308 77 290 81 280 86 263 116 250 116

10 339 76 332 80 320 85 309 90 289 117 278 121

12 348 78 334 83 328 88 317 93 306 120 295 125

15 357 80 344 86 335 92 322 96 311 125 309 130

SA100

5 392 93 385 99 375 105 362 111 332 137 309 143

7 409 97 392 109 380 119 367 145 345 150 332 148

10 421 102 403 112 391 125 376 150 353 152 349 156

12 439 105 420 115 406 138 388 153 376 154 382 161

15 450 109 439 120 423 142 398 156 388 161 393 167

SA125

5 496 111 475 119 451 126 435 372 422 162 393 168

7 529 116 507 124 481 131 465 398 443 194 423 175

10 578 122 557 129 531 138 513 440 491 206 470 183

12 612 126 590 134 561 142 543 465 519 212 499 190

15 661 131 636 139 606 148 586 502 560 219 539 197

SA150

5 622 152 596 162 566 172 545 182 492 214 458 199

7 662 158 636 168 603 178 582 188 520 226 492 206

10 725 166 698 177 664 188 642 198 582 233 547 217

12 767 172 739 183 702 194 680 205 616 240 581 224

15 827 178 797 189 759 202 733 213 665 249 627 233

SA170

5 689 185 660 197 662 208 604 206 579 264 539 275

7 704 192 675 204 645 216 626 213 608 274 579 285

10 724 202 694 214 677 227 642 224 626 287 644 300

12 750 208 719 221 692 235 684 231 645 297 684 310

15 788 216 733 229 728 245 704 241 663 310 738 322

SA210

5 758 202 790 215 710 228 692 239 666 296 614 309

7 778 210 743 223 730 237 702 248 689 307 667 320

10 801 221 776 235 741 249 721 260 709 323 701 336

12 817 228 799 243 782 258 751 269 735 334 727 348

15 997 237 956 252 907 268 773 280 842 346 840 362

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 08

Ratings - High Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA225

5 958 267 973 278 992 289 821 298 768 335 745 317

7 978 296 993 309 1012 321 838 331 787 344 760 352

10 1163 299 1181 312 1204 324 997 335 936 351 904 356

12 1232 305 1251 319 1275 331 1056 341 994 357 958 363

15 1330 311 1350 325 1376 337 1140 348 1073 370 1034 370

SA250

5 1077 300 1094 313 1115 325 923 335 869 348 745 356

7 1099 333 1116 348 1138 361 942 372 887 387 760 396

10 1308 336 1328 351 1354 365 1121 376 1056 391 904 400

12 1385 343 1406 358 1433 372 1187 384 1118 399 958 408

15 1495 350 1518 365 1547 379 1281 391 1206 406 1034 416

SA270

5 1145 256 1096 272 1041 313 1005 304 932 383 901 400

7 1220 265 1171 281 1111 325 1074 316 924 427 968 414

10 1335 278 1286 296 1224 341 1184 332 1104 418 1076 434

12 1413 288 1361 303 1295 353 1253 343 1168 432 1143 450

15 1526 388 1470 316 1397 367 1353 356 1260 448 1233 467

SA300

5 1243 307 1191 323 1131 343 1077 365 1000 460 966 479

7 1325 319 1272 335 1206 356 1152 379 1034 452 1038 497

10 1450 334 1396 353 1329 374 1269 398 1184 501 1154 522

12 1534 376 1477 364 1406 387 1345 411 1252 518 1226 540

15 1656 391 1596 379 1518 402 1451 426 1352 539 1323 560

SA325

5 1380 384 1402 401 1429 417 1183 430 1109 446 745 457

7 1408 427 1430 446 1458 463 1207 477 1132 496 760 508

10 1676 431 1702 450 1735 467 1437 482 1347 501 904 513

12 1775 440 1802 459 1837 477 1521 492 1426 511 958 523

15 1915 448 1945 468 1983 486 1642 501 1540 521 1034 533

SA350

5 1511 421 1534 439 1564 456 1295 470 1218 489 745 500

7 1542 467 1566 488 1596 507 1322 522 1243 543 760 556

10 1835 472 1863 493 1899 512 1573 528 1479 548 904 561

12 1943 481 1973 502 2011 522 1666 538 1566 559 958 572

15 2097 491 2129 512 2171 532 1798 549 1690 570 1034 583

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling Factor is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 09

Ratings - Standard Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

45 263 71 295 75 240 80 232 84 212 105 196 108

5 272 72 303 76 247 81 238 85 220 106 202 111

6 280 72 314 77 255 81 246 87 227 106 210 112

7 290 74 325 79 263 83 255 89 235 109 218 115

10 316 78 355 82 291 88 281 93 260 115 241 120

12 335 81 286 85 307 91 297 96 275 119 257 124

15 361 82 286 89 332 95 320 99 296 124 277 128

SA100

45 335 93 343 336 327 105 315 111 289 138 269 143

5 363 94 348 341 330 106 319 112 291 139 272 144

6 374 96 359 352 341 108 330 113 301 140 282 146

7 386 98 371 364 352 110 341 116 314 143 291 149

10 424 103 407 400 388 116 374 122 346 151 326 157

12 448 106 432 423 410 119 399 127 366 155 345 164

15 483 110 465 457 443 123 430 132 394 164 372 169

SA125

45 473 123 453 130 429 139 414 407 403 178 374 186

5 477 123 457 131 434 140 419 411 406 179 379 187

6 493 125 473 133 448 142 434 424 421 181 392 190

7 508 128 488 137 463 145 447 440 435 186 407 194

10 557 134 535 143 510 152 494 486 482 194 452 202

12 589 140 568 148 538 157 522 514 508 200 480 210

15 636 145 612 153 582 164 564 555 549 208 518 217

SA150

45 546 143 523 153 498 162 477 170 431 201 402 187

5 551 144 529 154 503 163 483 172 436 201 407 188

6 569 146 546 155 519 164 502 173 451 205 421 191

7 588 150 564 159 535 168 517 178 468 210 436 194

10 643 157 620 167 589 178 570 187 517 220 485 205

12 681 163 656 173 624 183 604 193 547 227 515 211

15 734 168 707 179 673 191 651 201 590 236 555 220

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 10

Ratings - Standard Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA170

45 571 159 547 171 547 179 501 177 477 227 445 236

5 576 159 553 170 554 180 506 178 485 229 451 238

6 596 162 571 173 571 182 524 180 501 232 468 242

7 614 166 591 177 591 187 541 184 519 234 485 246

10 673 175 649 185 650 196 596 194 574 248 539 259

12 711 180 685 192 689 203 631 200 607 257 572 268

15 768 187 739 198 742 211 681 209 655 268 617 278

SA210

45 718 188 688 201 653 213 629 222 580 276 534 288

5 724 189 695 202 659 214 635 223 586 276 540 289

6 749 192 718 204 682 216 658 228 606 281 565 292

7 773 197 741 208 704 221 680 232 628 287 587 299

10 846 206 814 219 775 233 750 243 694 302 651 315

12 895 214 862 228 820 241 793 251 734 313 692 325

15 965 221 929 236 886 250 856 262 820 323 749 338

SA270

45 992 241 952 257 905 294 873 287 809 360 782 374

5 1004 242 962 257 913 296 882 288 817 363 791 378

6 1038 245 993 261 944 300 912 292 845 367 818 383

7 1070 250 1029 266 975 307 942 298 876 374 849 392

10 1172 263 1129 279 1074 322 1039 314 969 395 944 411

12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424

15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442

SA320

45 1091 288 1047 304 994 323 947 344 878 434 849 452

5 1102 290 1056 306 1003 325 956 346 887 437 857 455

6 1138 295 1091 311 1038 330 990 351 916 443 888 462

7 1175 302 1128 318 1070 338 1021 359 950 448 921 471

10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495

12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512

15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 11

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

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DD

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S

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S M

CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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P

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SS

X0X1

X2X3

X4X5

X6X7

IN

24V

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LDVP

PS02

TP04

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HP LP

OL

OP

MP

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VP

121

FG1

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HQ

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A

FAN

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340

2

3 4

V3V1

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NF

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EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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N

Y4

224

225

226

COM

D24

1C1B

1A

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2C2B

2A

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3C3B

3A4C

4B4A

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COM

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COM

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G

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78 AI

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1

COM

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V

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COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

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COM

6C

-

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V

G

OUT

SS C0

X0X1

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85

+

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X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

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122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

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KM1

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2-A

KM3

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PY -ASV

1-A

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3-A

OUT

C0Y0

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Y3Y7

Y6Y5

DVP

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7C7B

7A8C

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CH4

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V

G

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COM

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78 AI

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TO E

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TE04

TE07

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AC22

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R23

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R21

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A R33

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LC

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12

56

78

ETS

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26+

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412

0

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12

56

78

ETS

2122

2425

26+

20

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501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

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MP

301

230

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107

D24

106

107

E

-A

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101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

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MP

304

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124

D24

E

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AIG

AI6

AI6

AIG AI

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6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

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233

233

233

247 24

7

247

FAN

FAN

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R2R0

2R2R0

2

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PB

EE

E

D24

D24

POW

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PH 2

20VA

C 50

60H

Z

TO E

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(ETS

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TO E

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(ETS

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FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

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LCU

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T-A

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M S

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CONT

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ING

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CONT

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CH

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R

FROM

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R

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R

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PM

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R PR

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PER

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ATUR

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0

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0

19EP

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TRA

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ENT T

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R SIG

NAL

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AUX

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ONT

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AUX

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Y (C

HW P

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24XC

AUX

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Y (F

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)

25PY

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UID

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ECTR

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ID V

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25

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75

29SV

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ID V

ALVE

50

30HQ

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TER

31FA

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NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

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ISE

FILT

ER

34F1

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SE

35V0

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RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

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-ETS

38EC

ECON

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R SOL

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D VA

LVE

39

PBEM

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RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

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SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Specifications (Continued)

pressure relief valve All chillers are fitted with drain valves on the removable heads and shell All coolers are factory insulated with 25mm of closed cell expanded synthetic rubber with all joints vapor sealed Coolers are designed in accordance with ASME guidelines and are rated according to the following pressures

REFRIGERANT SIDE WATER SIDE

KgSq cm LbsSq cm KgSq Inch LbsSq Inch

DESIGN PRESSURE 16 230 105 145

TEST PRESSURE 18 260 125 180

High efficiency heat transfer bull tubes are used in Model SA coolers having the external ( re f r igerant s ide) sur face expanded with ldquosaw toothrdquo type fins The inside surface has helical grooves to induce a swirling motion in the chilled water which improves heat transfer efficiency

Air Cooled CondenserCondenser coils are constructed from copper tubes with spiral bull grooves on their inside surface to maximize heat transfer efficiency Aluminum condenser fins have a corrosion resistant and hydrophilic coating to minimize dust and moisture accumulation and ensure a long working life The fins have rippled and louvered surfaces to improve heat dissipation efficiency Each condenser section comprises 4 coils in a

reversed M arrangement which ensures that at least 3 coils are always shaded from direct solar r a d i a t i o n a n d c a n t h e re f o re operate satisfactorily in ambient temperature up to 52˚C (125˚F)

Condenser fans are axial type using high strength pressed and bull formed aluminum alloy fan blades mechanically attached to rustless steel fan hubs Fan motors are waterproof rated to IP-54 with class lsquoFrsquo insulation suitable for operation in temperatures from -20˚c to 65˚c (-4˚F to 150˚F)

Electronic Expansion ValveThis is a standard feature on each refrigeration circuit on all Model SA liquid chillers Electronic expansion valves ensure stable operation throughout their operating range and precisely

control the refrigerant flow through the cooler The very low pressure losses associated with electronic expansion v a l v e s e n s u r e s t h a t f u l l operating cost savings can be achieved during cooler seasons when ambient temperatures and condensing pressures are reduced

EconomizerThis is a standard feature of all Model SA liquid chillers Economizers improve the efficiency of the compressor and refrigeration system and increase the capacity of the chiller

Control CenterAll SA liquid chillers are bull equipped with a factory fitted and wired control center mounted on one end of the chil ler unit The high voltage section incorporates compressor and fan contractors and safety controls and is protected by a door interlocked isolator The low voltage control section is accessed by a separate lockable door and houses the microprocessor controller and LED screen displaying operating and historical date

For high ambient units a double panel (panel within a panel) bull arrangement is used with thermostatically controlled fans to

ventilate the inter-panel space and prevent ldquosun-bakingrdquo in tropical areas causing excessively high temperatures inside the panel

LS Air-Cooled Screw Chillers 04

Factory Options

Remote Monitoring SystemA remote monitoring system is available as an accessory for field installation

Vibration IsolatorsA feature of all Model SA chillers is their very low levels of noise and vibration For most outdoor installations where chillers are positioned directly on a ground level concrete slab chillers can be quite satisfactorily mounted on the neoprene isolation pads that are supplied with the unit For installation on building roofs or in sensitive noise areas (hospitals studios and some residential areas) pre selected spring type isolators are available as a factory option ndash shipped loose for field installation

High Static Condenser Fans These are available for certain models to provide increased airflow over condenser coils and increased cooling capacity or increased static pressure in installations where exhaust air has to be ducted away from the chiller Specific performance data and costs can be provided for this option on application to LS Air Conditioning Co

Anti- Freeze HeatersFor installations where ambient temperatures can fall to 0˚c or below factory installed and thermostatically controlled heater mats are available as an accessory to prevent freezing of water inside the cooler tubes and waterboxes

Optimisation Main Auxiliary Unit For multi chiller installations an optional ldquoMaster Controllerrdquo can be factory fitted to one of the chillers This ldquoMaster Controllerrdquo will sequence up to four additional ldquoSlaverdquo chillers to optimize chiller running hoursrsquo and energy consumption

Multi-compressor OptionModels SA125 and SA150 are also available with 2-compressor and refrigeration circuits

ESD(Energy Saving Drive) Reduce Energy UseThe energy saving drive (ESD) technology revolutionized the performance of air cooled chillers ESD is a complete and high-quality device with a variable frequency drive inside By modulating the frequency of the input power it can always match chiller capacity to the building load and significantly lower energy consumption And if an ESD is installed in the constant-speed chiller almost 20 of the energy will be saved

This graph shows typical energy savings when an ESD is installed on a constant speed chiller

Reduce electrical demand chargesAlong with lowering energy consumption an ESD delivers other cost saving benefits like the possible elimination of electrical demand charges Electrical demand charges may be reduced because the motor will always start at low frequencies and maintain inrush current at or below full load amps And the electronics and circuitry can be designed for Minimum Current Amps which reduces the size and cost of chiller wiring

Reduce Motor StressAnother important benefit of an ESD installation is that it reduces stress on your chillerrsquos motor Unlike conventional motor starters an ESD avoids the sudden current surges that shock motors and drives during start-up Starting the compressor slowly and then bringing it up to speed gradually reduces equipment stress

13

11

09

07

05

03100 75 50 25

KWt

on

Load ()

ESDNon-ESD

LS Air-Cooled Screw Chillers 05

Physical Data - High Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 263 3447 4433 5196 608 689 788 8866 9243 10337 11323 12426

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 1156 1501 1935 2261 2742 3021 3436 387 4274 4521 4956 5426

Normal running current(A) 2339 2861 3672 4303 5218 5722 6533 7344 7626 8583 9394 10172

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 1084 1393 1791 2081 2526 2805 3184 3582 3986 4197 4596 5066

Oil charge liters 20 23 28 28 2323 2323 2328 2828 2828 282828 282828 282828

Air cooled condenser

Fan motor type Axial

Quantity of fan motor 4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 18 18 18 18 18 18 18 18 18 18 18 18

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 46 591 76 891 1042 1181 1351 152 1584 1772 1941 213

Water resistance(kPa) 50 50 55 55 55 60 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 165 220 275 330 185185 210210 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3464 4159 4557 5380 6253 7462 7615 7868 8340 9118 9726 10018

Operating weight of unit(kg) 3727 4519 4964 5835 6711 8010 8172 8444 9021 9839 10495 10810

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 46˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 06

Physical Data - Standard Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 2632 3519 4627 5351 5912 7038 8146 8619 9254 10557 1137 11975

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 829 1104 1451 1679 1868 2208 2555 2708 2902 3312 3569 3896

Normal running current(A) 1508 204 2624 3073 3532 408 4664 4954 5248 612 6704 7084

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 765 1008 1323 1519 1676 2016 2331 2452 2646 3024 3249 3576

Oil charge liters 15 23 23 28 1818 2323 2323 2323 2828 232323 232323 232328

Air cooled condenser

Fan motor type Axial

Quantity of fan motor

4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 16 16 16 16 16 16 16 16 16 16 16 16

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 451 612 793 917 1042 1224 1396 1477 1586 1809 1999 2127

Water resistance(kPa)

50 50 55 55 58 58 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 130 215 250 300 175175 185185 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3424 4219 4476 5355 6173 7402 7504 7706 7889 9058 9585 10018

Operating weight of unit(kg) 3687 4489 4883 5810 6631 7950 8061 8282 8570 9779 10354 10665

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 35˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 07

Ratings - High Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

5 299 69 297 74 272 78 262 83 252 107 232 112

7 319 72 308 77 290 81 280 86 263 116 250 116

10 339 76 332 80 320 85 309 90 289 117 278 121

12 348 78 334 83 328 88 317 93 306 120 295 125

15 357 80 344 86 335 92 322 96 311 125 309 130

SA100

5 392 93 385 99 375 105 362 111 332 137 309 143

7 409 97 392 109 380 119 367 145 345 150 332 148

10 421 102 403 112 391 125 376 150 353 152 349 156

12 439 105 420 115 406 138 388 153 376 154 382 161

15 450 109 439 120 423 142 398 156 388 161 393 167

SA125

5 496 111 475 119 451 126 435 372 422 162 393 168

7 529 116 507 124 481 131 465 398 443 194 423 175

10 578 122 557 129 531 138 513 440 491 206 470 183

12 612 126 590 134 561 142 543 465 519 212 499 190

15 661 131 636 139 606 148 586 502 560 219 539 197

SA150

5 622 152 596 162 566 172 545 182 492 214 458 199

7 662 158 636 168 603 178 582 188 520 226 492 206

10 725 166 698 177 664 188 642 198 582 233 547 217

12 767 172 739 183 702 194 680 205 616 240 581 224

15 827 178 797 189 759 202 733 213 665 249 627 233

SA170

5 689 185 660 197 662 208 604 206 579 264 539 275

7 704 192 675 204 645 216 626 213 608 274 579 285

10 724 202 694 214 677 227 642 224 626 287 644 300

12 750 208 719 221 692 235 684 231 645 297 684 310

15 788 216 733 229 728 245 704 241 663 310 738 322

SA210

5 758 202 790 215 710 228 692 239 666 296 614 309

7 778 210 743 223 730 237 702 248 689 307 667 320

10 801 221 776 235 741 249 721 260 709 323 701 336

12 817 228 799 243 782 258 751 269 735 334 727 348

15 997 237 956 252 907 268 773 280 842 346 840 362

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 08

Ratings - High Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA225

5 958 267 973 278 992 289 821 298 768 335 745 317

7 978 296 993 309 1012 321 838 331 787 344 760 352

10 1163 299 1181 312 1204 324 997 335 936 351 904 356

12 1232 305 1251 319 1275 331 1056 341 994 357 958 363

15 1330 311 1350 325 1376 337 1140 348 1073 370 1034 370

SA250

5 1077 300 1094 313 1115 325 923 335 869 348 745 356

7 1099 333 1116 348 1138 361 942 372 887 387 760 396

10 1308 336 1328 351 1354 365 1121 376 1056 391 904 400

12 1385 343 1406 358 1433 372 1187 384 1118 399 958 408

15 1495 350 1518 365 1547 379 1281 391 1206 406 1034 416

SA270

5 1145 256 1096 272 1041 313 1005 304 932 383 901 400

7 1220 265 1171 281 1111 325 1074 316 924 427 968 414

10 1335 278 1286 296 1224 341 1184 332 1104 418 1076 434

12 1413 288 1361 303 1295 353 1253 343 1168 432 1143 450

15 1526 388 1470 316 1397 367 1353 356 1260 448 1233 467

SA300

5 1243 307 1191 323 1131 343 1077 365 1000 460 966 479

7 1325 319 1272 335 1206 356 1152 379 1034 452 1038 497

10 1450 334 1396 353 1329 374 1269 398 1184 501 1154 522

12 1534 376 1477 364 1406 387 1345 411 1252 518 1226 540

15 1656 391 1596 379 1518 402 1451 426 1352 539 1323 560

SA325

5 1380 384 1402 401 1429 417 1183 430 1109 446 745 457

7 1408 427 1430 446 1458 463 1207 477 1132 496 760 508

10 1676 431 1702 450 1735 467 1437 482 1347 501 904 513

12 1775 440 1802 459 1837 477 1521 492 1426 511 958 523

15 1915 448 1945 468 1983 486 1642 501 1540 521 1034 533

SA350

5 1511 421 1534 439 1564 456 1295 470 1218 489 745 500

7 1542 467 1566 488 1596 507 1322 522 1243 543 760 556

10 1835 472 1863 493 1899 512 1573 528 1479 548 904 561

12 1943 481 1973 502 2011 522 1666 538 1566 559 958 572

15 2097 491 2129 512 2171 532 1798 549 1690 570 1034 583

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling Factor is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 09

Ratings - Standard Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

45 263 71 295 75 240 80 232 84 212 105 196 108

5 272 72 303 76 247 81 238 85 220 106 202 111

6 280 72 314 77 255 81 246 87 227 106 210 112

7 290 74 325 79 263 83 255 89 235 109 218 115

10 316 78 355 82 291 88 281 93 260 115 241 120

12 335 81 286 85 307 91 297 96 275 119 257 124

15 361 82 286 89 332 95 320 99 296 124 277 128

SA100

45 335 93 343 336 327 105 315 111 289 138 269 143

5 363 94 348 341 330 106 319 112 291 139 272 144

6 374 96 359 352 341 108 330 113 301 140 282 146

7 386 98 371 364 352 110 341 116 314 143 291 149

10 424 103 407 400 388 116 374 122 346 151 326 157

12 448 106 432 423 410 119 399 127 366 155 345 164

15 483 110 465 457 443 123 430 132 394 164 372 169

SA125

45 473 123 453 130 429 139 414 407 403 178 374 186

5 477 123 457 131 434 140 419 411 406 179 379 187

6 493 125 473 133 448 142 434 424 421 181 392 190

7 508 128 488 137 463 145 447 440 435 186 407 194

10 557 134 535 143 510 152 494 486 482 194 452 202

12 589 140 568 148 538 157 522 514 508 200 480 210

15 636 145 612 153 582 164 564 555 549 208 518 217

SA150

45 546 143 523 153 498 162 477 170 431 201 402 187

5 551 144 529 154 503 163 483 172 436 201 407 188

6 569 146 546 155 519 164 502 173 451 205 421 191

7 588 150 564 159 535 168 517 178 468 210 436 194

10 643 157 620 167 589 178 570 187 517 220 485 205

12 681 163 656 173 624 183 604 193 547 227 515 211

15 734 168 707 179 673 191 651 201 590 236 555 220

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 10

Ratings - Standard Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA170

45 571 159 547 171 547 179 501 177 477 227 445 236

5 576 159 553 170 554 180 506 178 485 229 451 238

6 596 162 571 173 571 182 524 180 501 232 468 242

7 614 166 591 177 591 187 541 184 519 234 485 246

10 673 175 649 185 650 196 596 194 574 248 539 259

12 711 180 685 192 689 203 631 200 607 257 572 268

15 768 187 739 198 742 211 681 209 655 268 617 278

SA210

45 718 188 688 201 653 213 629 222 580 276 534 288

5 724 189 695 202 659 214 635 223 586 276 540 289

6 749 192 718 204 682 216 658 228 606 281 565 292

7 773 197 741 208 704 221 680 232 628 287 587 299

10 846 206 814 219 775 233 750 243 694 302 651 315

12 895 214 862 228 820 241 793 251 734 313 692 325

15 965 221 929 236 886 250 856 262 820 323 749 338

SA270

45 992 241 952 257 905 294 873 287 809 360 782 374

5 1004 242 962 257 913 296 882 288 817 363 791 378

6 1038 245 993 261 944 300 912 292 845 367 818 383

7 1070 250 1029 266 975 307 942 298 876 374 849 392

10 1172 263 1129 279 1074 322 1039 314 969 395 944 411

12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424

15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442

SA320

45 1091 288 1047 304 994 323 947 344 878 434 849 452

5 1102 290 1056 306 1003 325 956 346 887 437 857 455

6 1138 295 1091 311 1038 330 990 351 916 443 888 462

7 1175 302 1128 318 1070 338 1021 359 950 448 921 471

10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495

12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512

15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 11

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

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QUI

D S

OLE

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VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

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L+L-

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L+L-

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CH3

CH4

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G

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78 AI

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1

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CH3

COM

I+V+

COM

I+V+

COM

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CH5

CH6

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-

DVP

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G

OUT

SS C0

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85

+

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X6X7

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Y2Y3

227

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122

123

124

112

113

HP LP

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OP

MP

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125

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2-A

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1-A

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CH1

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CH4

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78 AI

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TO E

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TE04

TE07

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56

78

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412

0

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12

56

78

ETS

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26+

20

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501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

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402

401

403

404

KM2

KM2

406

405

408

407

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T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

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123

2

KM1

KM3

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230

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106

107

E

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101

102

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PU

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231

232

230

231

232

230

AIG

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5

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305

306

123

R2R2

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124

D24

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123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

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410

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LC

D24

125

CH

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411

230

231

232

233

FANS

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237

234

KM1

KM2

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EC

235

236

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240

241

242

243

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3SV

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244

245

246

247

FANS

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233

233

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247 24

7

247

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FRO

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PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

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NL

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FROM

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ONT

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HW P

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35V0

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1 2 43NOTE

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BY U

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ON C

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ODY

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TO

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TER

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TO

USER

S M

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302

303

301

305

306

304

11 1412L2 L3L1

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AX

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AU

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PB

R2 T2

380VTR

R02

T2

220V

R01

T01

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10A

S-A

2M-A

1M-A

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161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

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S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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-B-B

-B

AU AV AW

122

D24 T2R2

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M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

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B

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FAN

88F

1-A

230

323

321

51F1

51F3

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3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

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3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

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123

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BYBX

BWBV

BU

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VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

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F2

AV2

AW2

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F3

AU3 FM

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F3

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F4

AU4 FM

4-A

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F4

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AW4

CO

MP

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BV1

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F2

BV2

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F3

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F3

BV3

BW3

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F4

BU4 FM

4-B

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F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

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123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

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D24

122

123

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R2R0

2

R02

R02

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G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

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524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

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130

D24

127

130

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AIG

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AC2

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R2 AIG

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060

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ONT

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THE

SE PA

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ARE

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ON

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Note

1

T

HESE

PART

S AR

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CATE

D IN

CO

NTRO

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NEL

STAR

TER

PNL

CONT

ROL

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OP

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NORM

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POW

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SGL

CU

RREN

T-A

POW

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RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

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STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

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G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

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F5

AV5

AW5

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F6

AU6 FM

6-A

-A51

F6

AV6

AW6

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F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

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88F

3-C

88F

5-C

51F5

51F6

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88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

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F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

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UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

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ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

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1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Factory Options

Remote Monitoring SystemA remote monitoring system is available as an accessory for field installation

Vibration IsolatorsA feature of all Model SA chillers is their very low levels of noise and vibration For most outdoor installations where chillers are positioned directly on a ground level concrete slab chillers can be quite satisfactorily mounted on the neoprene isolation pads that are supplied with the unit For installation on building roofs or in sensitive noise areas (hospitals studios and some residential areas) pre selected spring type isolators are available as a factory option ndash shipped loose for field installation

High Static Condenser Fans These are available for certain models to provide increased airflow over condenser coils and increased cooling capacity or increased static pressure in installations where exhaust air has to be ducted away from the chiller Specific performance data and costs can be provided for this option on application to LS Air Conditioning Co

Anti- Freeze HeatersFor installations where ambient temperatures can fall to 0˚c or below factory installed and thermostatically controlled heater mats are available as an accessory to prevent freezing of water inside the cooler tubes and waterboxes

Optimisation Main Auxiliary Unit For multi chiller installations an optional ldquoMaster Controllerrdquo can be factory fitted to one of the chillers This ldquoMaster Controllerrdquo will sequence up to four additional ldquoSlaverdquo chillers to optimize chiller running hoursrsquo and energy consumption

Multi-compressor OptionModels SA125 and SA150 are also available with 2-compressor and refrigeration circuits

ESD(Energy Saving Drive) Reduce Energy UseThe energy saving drive (ESD) technology revolutionized the performance of air cooled chillers ESD is a complete and high-quality device with a variable frequency drive inside By modulating the frequency of the input power it can always match chiller capacity to the building load and significantly lower energy consumption And if an ESD is installed in the constant-speed chiller almost 20 of the energy will be saved

This graph shows typical energy savings when an ESD is installed on a constant speed chiller

Reduce electrical demand chargesAlong with lowering energy consumption an ESD delivers other cost saving benefits like the possible elimination of electrical demand charges Electrical demand charges may be reduced because the motor will always start at low frequencies and maintain inrush current at or below full load amps And the electronics and circuitry can be designed for Minimum Current Amps which reduces the size and cost of chiller wiring

Reduce Motor StressAnother important benefit of an ESD installation is that it reduces stress on your chillerrsquos motor Unlike conventional motor starters an ESD avoids the sudden current surges that shock motors and drives during start-up Starting the compressor slowly and then bringing it up to speed gradually reduces equipment stress

13

11

09

07

05

03100 75 50 25

KWt

on

Load ()

ESDNon-ESD

LS Air-Cooled Screw Chillers 05

Physical Data - High Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 263 3447 4433 5196 608 689 788 8866 9243 10337 11323 12426

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 1156 1501 1935 2261 2742 3021 3436 387 4274 4521 4956 5426

Normal running current(A) 2339 2861 3672 4303 5218 5722 6533 7344 7626 8583 9394 10172

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 1084 1393 1791 2081 2526 2805 3184 3582 3986 4197 4596 5066

Oil charge liters 20 23 28 28 2323 2323 2328 2828 2828 282828 282828 282828

Air cooled condenser

Fan motor type Axial

Quantity of fan motor 4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 18 18 18 18 18 18 18 18 18 18 18 18

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 46 591 76 891 1042 1181 1351 152 1584 1772 1941 213

Water resistance(kPa) 50 50 55 55 55 60 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 165 220 275 330 185185 210210 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3464 4159 4557 5380 6253 7462 7615 7868 8340 9118 9726 10018

Operating weight of unit(kg) 3727 4519 4964 5835 6711 8010 8172 8444 9021 9839 10495 10810

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 46˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 06

Physical Data - Standard Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 2632 3519 4627 5351 5912 7038 8146 8619 9254 10557 1137 11975

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 829 1104 1451 1679 1868 2208 2555 2708 2902 3312 3569 3896

Normal running current(A) 1508 204 2624 3073 3532 408 4664 4954 5248 612 6704 7084

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 765 1008 1323 1519 1676 2016 2331 2452 2646 3024 3249 3576

Oil charge liters 15 23 23 28 1818 2323 2323 2323 2828 232323 232323 232328

Air cooled condenser

Fan motor type Axial

Quantity of fan motor

4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 16 16 16 16 16 16 16 16 16 16 16 16

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 451 612 793 917 1042 1224 1396 1477 1586 1809 1999 2127

Water resistance(kPa)

50 50 55 55 58 58 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 130 215 250 300 175175 185185 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3424 4219 4476 5355 6173 7402 7504 7706 7889 9058 9585 10018

Operating weight of unit(kg) 3687 4489 4883 5810 6631 7950 8061 8282 8570 9779 10354 10665

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 35˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 07

Ratings - High Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

5 299 69 297 74 272 78 262 83 252 107 232 112

7 319 72 308 77 290 81 280 86 263 116 250 116

10 339 76 332 80 320 85 309 90 289 117 278 121

12 348 78 334 83 328 88 317 93 306 120 295 125

15 357 80 344 86 335 92 322 96 311 125 309 130

SA100

5 392 93 385 99 375 105 362 111 332 137 309 143

7 409 97 392 109 380 119 367 145 345 150 332 148

10 421 102 403 112 391 125 376 150 353 152 349 156

12 439 105 420 115 406 138 388 153 376 154 382 161

15 450 109 439 120 423 142 398 156 388 161 393 167

SA125

5 496 111 475 119 451 126 435 372 422 162 393 168

7 529 116 507 124 481 131 465 398 443 194 423 175

10 578 122 557 129 531 138 513 440 491 206 470 183

12 612 126 590 134 561 142 543 465 519 212 499 190

15 661 131 636 139 606 148 586 502 560 219 539 197

SA150

5 622 152 596 162 566 172 545 182 492 214 458 199

7 662 158 636 168 603 178 582 188 520 226 492 206

10 725 166 698 177 664 188 642 198 582 233 547 217

12 767 172 739 183 702 194 680 205 616 240 581 224

15 827 178 797 189 759 202 733 213 665 249 627 233

SA170

5 689 185 660 197 662 208 604 206 579 264 539 275

7 704 192 675 204 645 216 626 213 608 274 579 285

10 724 202 694 214 677 227 642 224 626 287 644 300

12 750 208 719 221 692 235 684 231 645 297 684 310

15 788 216 733 229 728 245 704 241 663 310 738 322

SA210

5 758 202 790 215 710 228 692 239 666 296 614 309

7 778 210 743 223 730 237 702 248 689 307 667 320

10 801 221 776 235 741 249 721 260 709 323 701 336

12 817 228 799 243 782 258 751 269 735 334 727 348

15 997 237 956 252 907 268 773 280 842 346 840 362

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 08

Ratings - High Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA225

5 958 267 973 278 992 289 821 298 768 335 745 317

7 978 296 993 309 1012 321 838 331 787 344 760 352

10 1163 299 1181 312 1204 324 997 335 936 351 904 356

12 1232 305 1251 319 1275 331 1056 341 994 357 958 363

15 1330 311 1350 325 1376 337 1140 348 1073 370 1034 370

SA250

5 1077 300 1094 313 1115 325 923 335 869 348 745 356

7 1099 333 1116 348 1138 361 942 372 887 387 760 396

10 1308 336 1328 351 1354 365 1121 376 1056 391 904 400

12 1385 343 1406 358 1433 372 1187 384 1118 399 958 408

15 1495 350 1518 365 1547 379 1281 391 1206 406 1034 416

SA270

5 1145 256 1096 272 1041 313 1005 304 932 383 901 400

7 1220 265 1171 281 1111 325 1074 316 924 427 968 414

10 1335 278 1286 296 1224 341 1184 332 1104 418 1076 434

12 1413 288 1361 303 1295 353 1253 343 1168 432 1143 450

15 1526 388 1470 316 1397 367 1353 356 1260 448 1233 467

SA300

5 1243 307 1191 323 1131 343 1077 365 1000 460 966 479

7 1325 319 1272 335 1206 356 1152 379 1034 452 1038 497

10 1450 334 1396 353 1329 374 1269 398 1184 501 1154 522

12 1534 376 1477 364 1406 387 1345 411 1252 518 1226 540

15 1656 391 1596 379 1518 402 1451 426 1352 539 1323 560

SA325

5 1380 384 1402 401 1429 417 1183 430 1109 446 745 457

7 1408 427 1430 446 1458 463 1207 477 1132 496 760 508

10 1676 431 1702 450 1735 467 1437 482 1347 501 904 513

12 1775 440 1802 459 1837 477 1521 492 1426 511 958 523

15 1915 448 1945 468 1983 486 1642 501 1540 521 1034 533

SA350

5 1511 421 1534 439 1564 456 1295 470 1218 489 745 500

7 1542 467 1566 488 1596 507 1322 522 1243 543 760 556

10 1835 472 1863 493 1899 512 1573 528 1479 548 904 561

12 1943 481 1973 502 2011 522 1666 538 1566 559 958 572

15 2097 491 2129 512 2171 532 1798 549 1690 570 1034 583

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling Factor is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 09

Ratings - Standard Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

45 263 71 295 75 240 80 232 84 212 105 196 108

5 272 72 303 76 247 81 238 85 220 106 202 111

6 280 72 314 77 255 81 246 87 227 106 210 112

7 290 74 325 79 263 83 255 89 235 109 218 115

10 316 78 355 82 291 88 281 93 260 115 241 120

12 335 81 286 85 307 91 297 96 275 119 257 124

15 361 82 286 89 332 95 320 99 296 124 277 128

SA100

45 335 93 343 336 327 105 315 111 289 138 269 143

5 363 94 348 341 330 106 319 112 291 139 272 144

6 374 96 359 352 341 108 330 113 301 140 282 146

7 386 98 371 364 352 110 341 116 314 143 291 149

10 424 103 407 400 388 116 374 122 346 151 326 157

12 448 106 432 423 410 119 399 127 366 155 345 164

15 483 110 465 457 443 123 430 132 394 164 372 169

SA125

45 473 123 453 130 429 139 414 407 403 178 374 186

5 477 123 457 131 434 140 419 411 406 179 379 187

6 493 125 473 133 448 142 434 424 421 181 392 190

7 508 128 488 137 463 145 447 440 435 186 407 194

10 557 134 535 143 510 152 494 486 482 194 452 202

12 589 140 568 148 538 157 522 514 508 200 480 210

15 636 145 612 153 582 164 564 555 549 208 518 217

SA150

45 546 143 523 153 498 162 477 170 431 201 402 187

5 551 144 529 154 503 163 483 172 436 201 407 188

6 569 146 546 155 519 164 502 173 451 205 421 191

7 588 150 564 159 535 168 517 178 468 210 436 194

10 643 157 620 167 589 178 570 187 517 220 485 205

12 681 163 656 173 624 183 604 193 547 227 515 211

15 734 168 707 179 673 191 651 201 590 236 555 220

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 10

Ratings - Standard Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA170

45 571 159 547 171 547 179 501 177 477 227 445 236

5 576 159 553 170 554 180 506 178 485 229 451 238

6 596 162 571 173 571 182 524 180 501 232 468 242

7 614 166 591 177 591 187 541 184 519 234 485 246

10 673 175 649 185 650 196 596 194 574 248 539 259

12 711 180 685 192 689 203 631 200 607 257 572 268

15 768 187 739 198 742 211 681 209 655 268 617 278

SA210

45 718 188 688 201 653 213 629 222 580 276 534 288

5 724 189 695 202 659 214 635 223 586 276 540 289

6 749 192 718 204 682 216 658 228 606 281 565 292

7 773 197 741 208 704 221 680 232 628 287 587 299

10 846 206 814 219 775 233 750 243 694 302 651 315

12 895 214 862 228 820 241 793 251 734 313 692 325

15 965 221 929 236 886 250 856 262 820 323 749 338

SA270

45 992 241 952 257 905 294 873 287 809 360 782 374

5 1004 242 962 257 913 296 882 288 817 363 791 378

6 1038 245 993 261 944 300 912 292 845 367 818 383

7 1070 250 1029 266 975 307 942 298 876 374 849 392

10 1172 263 1129 279 1074 322 1039 314 969 395 944 411

12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424

15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442

SA320

45 1091 288 1047 304 994 323 947 344 878 434 849 452

5 1102 290 1056 306 1003 325 956 346 887 437 857 455

6 1138 295 1091 311 1038 330 990 351 916 443 888 462

7 1175 302 1128 318 1070 338 1021 359 950 448 921 471

10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495

12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512

15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 11

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

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HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

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AO2

ACO

M

TO E

XD-B

DVP

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ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

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3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

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D

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CH3

CH4

0V24

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G

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V+

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COM

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78 AI

9AI

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IT-C

COM

D24

AO3

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M

TO E

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COM

AI5

AI6

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TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

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D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

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MP

301

230

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123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

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-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

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PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

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FRO

M P

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PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

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CC

FOR CHW PUMPINTERLOCK

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FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

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PNL

STAR

TER

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BODY

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CURR

ENT-B

FRO

M S

TART

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NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

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TART

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NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

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L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

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PY -CSV

1-C

SV2

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3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

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134

135

MP

VP-C

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136

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COM

-

DVP

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XIN

0V24

V

G

OUT

V0+

I0+

V1+

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C0

X0X1

X2X3

SS

Y0Y1

COM

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I0+

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I1+

DA

AD

RS-4

85

+

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AO1

ACO

M

TO E

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78 AI

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IT-B

78 AI

7AI

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24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

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FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

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-C

MP

307

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135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

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LM

OTOR

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ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

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NEL

CONT

ACTO

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COOL

ING

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STOP

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308

309

307

ELEC

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PM

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PER

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100

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16TE

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DD

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ALVE

42PB

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CY S

TOP

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CH

1 2 43NOTE

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BY

USER

S

LOCA

TED

ON

CHIL

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BODY

FRO

MT

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TART

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NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

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24RS

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HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

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A

FAN

KM2

340

2

3 4

V3V1

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EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

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CH1

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L+FG

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CH2

CH3

CH4

0V24

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CH1

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CH3

CH4

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COM

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78 AI

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M

TO E

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DVP

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ACH

1

COM

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V

GCO

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COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

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CH4

CH5

CH6

D24

COM

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DVP

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AIN

0V24

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OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

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-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

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PY -ASV

1-A

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3-A

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C0Y0

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Y3Y7

Y6Y5

DVP

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7C7B

7A8C

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78 AI

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AI4

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TE03

TE04

TE07

TE08

AC22

024

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R21

T21

F22

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FRO

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12

56

78

ETS

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2425

26+

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412

0

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VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

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107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

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MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

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COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

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DA

AD

RS-4

85

+

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-A AI1

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AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

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135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

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P IN

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SGL

FRO

M U

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REM

OTE

STAR

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OP

SIGN

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USE

R

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REM

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6M

PM

OTO

R PR

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7HP

HIGH

PER

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PRE

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9O

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SW

ITCH

10O

PO

IL D

IFF

PRES

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SW

ITCH

11TE

01EC

HW T

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RPT

100

12TE

02LC

HW T

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100

13TE

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N TE

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R A

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0

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N TE

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RE S

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R A

PT10

0

15TE

05EX

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T TEM

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TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

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RE S

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R B

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0

17TE

07SU

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R B

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0

18TE

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T TEM

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BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

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N TE

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RE SE

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CPT

100

21TE

11EX

HAUS

T TEM

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TURE

SENS

OR C

PT10

0

22EP

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PRE

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R

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E TRA

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R

24IT

CURR

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TRAN

SDUC

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AUX

RELA

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26CH

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27XC

AUX

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25

31SV

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50

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CASE

CIR

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BRE

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36N

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FILT

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37F1

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38V0

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39TR

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RMER

40EK

DD

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R M

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ID V

ALVE

42PB

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TOP

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CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

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ON

CHIL

LER

BODY

FRO

MT

O S

TART

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NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

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T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

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T

L+FG

I-L-

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CH2

CH3

CH4

0V

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E

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78 AI

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M

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ACH

1

COM

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0V24

V

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COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

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AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

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122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

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PY -ASV

1-A

SV2

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3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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N

Y4

7C7B

7A8C

8B8A

CH1

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D

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V

G

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78 AI

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IT-B

COM

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M

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TE03

TE04

TE07

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AC22

024

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R23

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A R33

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12

56

78

ETS

2122

2425

26+

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412

0

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-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

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MP

301

230

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107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

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MP

304

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124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

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233

233

233

247 24

7

247

FAN

FAN

-1-2

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R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

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PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

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TO E

LEC

EXPV

ALVE

(ETS

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FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

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CONT

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ABNO

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CURR

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CONT

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0

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0

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19EP

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TRA

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NAL

22KM

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24XC

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25PY

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27SV

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ID V

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25

28SV

2SO

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75

29SV

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ALVE

50

30HQ

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TER

31FA

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32M

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ED CA

SE CI

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T BR

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R

33N

FNO

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ER

34F1

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SE

35V0

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RIST

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36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

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-ETS

38EC

ECON

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39

PBEM

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RNCY

STO

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ITCH

1 2 43NOTE

SUPP

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BY U

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LOCA

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ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

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88F

3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

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BT0

BS0

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VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

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F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

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F1

BV1

BW1

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F2

BU2 FM

2-B

-B51

F2

BV2

BW2

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F3

BU3 FM

3-B

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F3

BV3

BW3

-B88

F4

BU4 FM

4-B

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F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

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123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

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CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

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TO C

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3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

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ON

CHIL

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Note

1

T

HESE

PART

S AR

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CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

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OP

SGL

EMER

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CYAB

NORM

AL S

GL-A

MOT

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POW

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SGL

CU

RREN

T-A

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RL P

ANEL TO

CO

NTRO

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NEL

CONT

ACTO

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GNAL

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NS S

IGAL

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STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

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NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

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LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Physical Data - High Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 263 3447 4433 5196 608 689 788 8866 9243 10337 11323 12426

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 1156 1501 1935 2261 2742 3021 3436 387 4274 4521 4956 5426

Normal running current(A) 2339 2861 3672 4303 5218 5722 6533 7344 7626 8583 9394 10172

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 1084 1393 1791 2081 2526 2805 3184 3582 3986 4197 4596 5066

Oil charge liters 20 23 28 28 2323 2323 2328 2828 2828 282828 282828 282828

Air cooled condenser

Fan motor type Axial

Quantity of fan motor 4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 18 18 18 18 18 18 18 18 18 18 18 18

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 46 591 76 891 1042 1181 1351 152 1584 1772 1941 213

Water resistance(kPa) 50 50 55 55 55 60 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 165 220 275 330 185185 210210 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3464 4159 4557 5380 6253 7462 7615 7868 8340 9118 9726 10018

Operating weight of unit(kg) 3727 4519 4964 5835 6711 8010 8172 8444 9021 9839 10495 10810

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 46˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 06

Physical Data - Standard Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 2632 3519 4627 5351 5912 7038 8146 8619 9254 10557 1137 11975

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 829 1104 1451 1679 1868 2208 2555 2708 2902 3312 3569 3896

Normal running current(A) 1508 204 2624 3073 3532 408 4664 4954 5248 612 6704 7084

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 765 1008 1323 1519 1676 2016 2331 2452 2646 3024 3249 3576

Oil charge liters 15 23 23 28 1818 2323 2323 2323 2828 232323 232323 232328

Air cooled condenser

Fan motor type Axial

Quantity of fan motor

4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 16 16 16 16 16 16 16 16 16 16 16 16

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 451 612 793 917 1042 1224 1396 1477 1586 1809 1999 2127

Water resistance(kPa)

50 50 55 55 58 58 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 130 215 250 300 175175 185185 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3424 4219 4476 5355 6173 7402 7504 7706 7889 9058 9585 10018

Operating weight of unit(kg) 3687 4489 4883 5810 6631 7950 8061 8282 8570 9779 10354 10665

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 35˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 07

Ratings - High Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

5 299 69 297 74 272 78 262 83 252 107 232 112

7 319 72 308 77 290 81 280 86 263 116 250 116

10 339 76 332 80 320 85 309 90 289 117 278 121

12 348 78 334 83 328 88 317 93 306 120 295 125

15 357 80 344 86 335 92 322 96 311 125 309 130

SA100

5 392 93 385 99 375 105 362 111 332 137 309 143

7 409 97 392 109 380 119 367 145 345 150 332 148

10 421 102 403 112 391 125 376 150 353 152 349 156

12 439 105 420 115 406 138 388 153 376 154 382 161

15 450 109 439 120 423 142 398 156 388 161 393 167

SA125

5 496 111 475 119 451 126 435 372 422 162 393 168

7 529 116 507 124 481 131 465 398 443 194 423 175

10 578 122 557 129 531 138 513 440 491 206 470 183

12 612 126 590 134 561 142 543 465 519 212 499 190

15 661 131 636 139 606 148 586 502 560 219 539 197

SA150

5 622 152 596 162 566 172 545 182 492 214 458 199

7 662 158 636 168 603 178 582 188 520 226 492 206

10 725 166 698 177 664 188 642 198 582 233 547 217

12 767 172 739 183 702 194 680 205 616 240 581 224

15 827 178 797 189 759 202 733 213 665 249 627 233

SA170

5 689 185 660 197 662 208 604 206 579 264 539 275

7 704 192 675 204 645 216 626 213 608 274 579 285

10 724 202 694 214 677 227 642 224 626 287 644 300

12 750 208 719 221 692 235 684 231 645 297 684 310

15 788 216 733 229 728 245 704 241 663 310 738 322

SA210

5 758 202 790 215 710 228 692 239 666 296 614 309

7 778 210 743 223 730 237 702 248 689 307 667 320

10 801 221 776 235 741 249 721 260 709 323 701 336

12 817 228 799 243 782 258 751 269 735 334 727 348

15 997 237 956 252 907 268 773 280 842 346 840 362

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 08

Ratings - High Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA225

5 958 267 973 278 992 289 821 298 768 335 745 317

7 978 296 993 309 1012 321 838 331 787 344 760 352

10 1163 299 1181 312 1204 324 997 335 936 351 904 356

12 1232 305 1251 319 1275 331 1056 341 994 357 958 363

15 1330 311 1350 325 1376 337 1140 348 1073 370 1034 370

SA250

5 1077 300 1094 313 1115 325 923 335 869 348 745 356

7 1099 333 1116 348 1138 361 942 372 887 387 760 396

10 1308 336 1328 351 1354 365 1121 376 1056 391 904 400

12 1385 343 1406 358 1433 372 1187 384 1118 399 958 408

15 1495 350 1518 365 1547 379 1281 391 1206 406 1034 416

SA270

5 1145 256 1096 272 1041 313 1005 304 932 383 901 400

7 1220 265 1171 281 1111 325 1074 316 924 427 968 414

10 1335 278 1286 296 1224 341 1184 332 1104 418 1076 434

12 1413 288 1361 303 1295 353 1253 343 1168 432 1143 450

15 1526 388 1470 316 1397 367 1353 356 1260 448 1233 467

SA300

5 1243 307 1191 323 1131 343 1077 365 1000 460 966 479

7 1325 319 1272 335 1206 356 1152 379 1034 452 1038 497

10 1450 334 1396 353 1329 374 1269 398 1184 501 1154 522

12 1534 376 1477 364 1406 387 1345 411 1252 518 1226 540

15 1656 391 1596 379 1518 402 1451 426 1352 539 1323 560

SA325

5 1380 384 1402 401 1429 417 1183 430 1109 446 745 457

7 1408 427 1430 446 1458 463 1207 477 1132 496 760 508

10 1676 431 1702 450 1735 467 1437 482 1347 501 904 513

12 1775 440 1802 459 1837 477 1521 492 1426 511 958 523

15 1915 448 1945 468 1983 486 1642 501 1540 521 1034 533

SA350

5 1511 421 1534 439 1564 456 1295 470 1218 489 745 500

7 1542 467 1566 488 1596 507 1322 522 1243 543 760 556

10 1835 472 1863 493 1899 512 1573 528 1479 548 904 561

12 1943 481 1973 502 2011 522 1666 538 1566 559 958 572

15 2097 491 2129 512 2171 532 1798 549 1690 570 1034 583

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling Factor is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 09

Ratings - Standard Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

45 263 71 295 75 240 80 232 84 212 105 196 108

5 272 72 303 76 247 81 238 85 220 106 202 111

6 280 72 314 77 255 81 246 87 227 106 210 112

7 290 74 325 79 263 83 255 89 235 109 218 115

10 316 78 355 82 291 88 281 93 260 115 241 120

12 335 81 286 85 307 91 297 96 275 119 257 124

15 361 82 286 89 332 95 320 99 296 124 277 128

SA100

45 335 93 343 336 327 105 315 111 289 138 269 143

5 363 94 348 341 330 106 319 112 291 139 272 144

6 374 96 359 352 341 108 330 113 301 140 282 146

7 386 98 371 364 352 110 341 116 314 143 291 149

10 424 103 407 400 388 116 374 122 346 151 326 157

12 448 106 432 423 410 119 399 127 366 155 345 164

15 483 110 465 457 443 123 430 132 394 164 372 169

SA125

45 473 123 453 130 429 139 414 407 403 178 374 186

5 477 123 457 131 434 140 419 411 406 179 379 187

6 493 125 473 133 448 142 434 424 421 181 392 190

7 508 128 488 137 463 145 447 440 435 186 407 194

10 557 134 535 143 510 152 494 486 482 194 452 202

12 589 140 568 148 538 157 522 514 508 200 480 210

15 636 145 612 153 582 164 564 555 549 208 518 217

SA150

45 546 143 523 153 498 162 477 170 431 201 402 187

5 551 144 529 154 503 163 483 172 436 201 407 188

6 569 146 546 155 519 164 502 173 451 205 421 191

7 588 150 564 159 535 168 517 178 468 210 436 194

10 643 157 620 167 589 178 570 187 517 220 485 205

12 681 163 656 173 624 183 604 193 547 227 515 211

15 734 168 707 179 673 191 651 201 590 236 555 220

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 10

Ratings - Standard Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA170

45 571 159 547 171 547 179 501 177 477 227 445 236

5 576 159 553 170 554 180 506 178 485 229 451 238

6 596 162 571 173 571 182 524 180 501 232 468 242

7 614 166 591 177 591 187 541 184 519 234 485 246

10 673 175 649 185 650 196 596 194 574 248 539 259

12 711 180 685 192 689 203 631 200 607 257 572 268

15 768 187 739 198 742 211 681 209 655 268 617 278

SA210

45 718 188 688 201 653 213 629 222 580 276 534 288

5 724 189 695 202 659 214 635 223 586 276 540 289

6 749 192 718 204 682 216 658 228 606 281 565 292

7 773 197 741 208 704 221 680 232 628 287 587 299

10 846 206 814 219 775 233 750 243 694 302 651 315

12 895 214 862 228 820 241 793 251 734 313 692 325

15 965 221 929 236 886 250 856 262 820 323 749 338

SA270

45 992 241 952 257 905 294 873 287 809 360 782 374

5 1004 242 962 257 913 296 882 288 817 363 791 378

6 1038 245 993 261 944 300 912 292 845 367 818 383

7 1070 250 1029 266 975 307 942 298 876 374 849 392

10 1172 263 1129 279 1074 322 1039 314 969 395 944 411

12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424

15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442

SA320

45 1091 288 1047 304 994 323 947 344 878 434 849 452

5 1102 290 1056 306 1003 325 956 346 887 437 857 455

6 1138 295 1091 311 1038 330 990 351 916 443 888 462

7 1175 302 1128 318 1070 338 1021 359 950 448 921 471

10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495

12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512

15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 11

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

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D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

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MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

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TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

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D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

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-3

R2R0

2R2R0

2

R2R0

2

PB

EE

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D24

D24

POW

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PH 2

20VA

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Z

TO E

LEC

EXPV

ALVE

(ETS

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TO E

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(ETS

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FRO

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LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

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PNL

STAR

TER

PNL

BODY

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CONT

ACTO

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FRO

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TART

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NEL

CONT

ACTO

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NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

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PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

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136

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COM

-

DVP

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0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

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Y0Y1

COM

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I0+

V1+

I1+

DA

AD

RS-4

85

+

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AO1

ACO

M

TO E

XD-A

78 AI

8AI

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IT-B

78 AI

7AI

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24VA

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-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

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135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

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LM

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ERTR

ANSD

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SGL

CURR

ENT-

C

FRO

M S

TART

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NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

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308

309

307

ELEC

TRIC

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1FS

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CH

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CHW

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0

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LS Air-Cooled Screw Chillers 21

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101

102

100

103

105

106

104

107

COM

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F15

A

EE

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223

220

222

221

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COM

COM

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CHXC20

120

0

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110

111

COM

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OUT

C0Y0

Y1Y2

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Y6Y5

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120

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224

225

226

COM

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227

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122

123

124

112

113

HP LP

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125

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501

502

503

504

505

506

507

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341 -B

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402

401

403

404

KM2

KM2

406

405

408

407

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302

303

106

303

302

301

R2R2

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123

2

KM1

KM3

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MP

301

230

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107

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106

107

E

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101

102

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PU

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231

232

230

231

232

230

AIG

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5

T21

305

306

123

R2R2

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KM1

KM3

KM2

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MP

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124

D24

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123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

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LC

D24

125

CH

AO2

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411

230

231

232

233

FANS

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SGL

237

234

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KM2

KM3

EC

235

236

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240

241

242

243

PYSV

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244

245

246

247

FANS

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233

233

233

247 24

7

247

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FRO

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FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

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CC

FOR CHW PUMPINTERLOCK

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FRO

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CC

CONT

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302

303

301

305

306

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11 1412L2 L3L1

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AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Physical Data - Standard Ambient Models

MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350

Nominal cooling capacity(kW) 2632 3519 4627 5351 5912 7038 8146 8619 9254 10557 1137 11975

Power supply 3PH 380220V 50Hz

Nominal total power(kW) 829 1104 1451 1679 1868 2208 2555 2708 2902 3312 3569 3896

Normal running current(A) 1508 204 2624 3073 3532 408 4664 4954 5248 612 6704 7084

Safety protectionHighlow pressure protection water flow failier protection low water temperature protection

motor overload phase-failure and phase sequence protection

Compressor

Type Rotary Screw Compressor

Quantity 1 1 1 1 2 2 2 2 2 3 3 3

Motor Kw 765 1008 1323 1519 1676 2016 2331 2452 2646 3024 3249 3576

Oil charge liters 15 23 23 28 1818 2323 2323 2323 2828 232323 232323 232328

Air cooled condenser

Fan motor type Axial

Quantity of fan motor

4 6 8 10 66 66 68 88 88 666 668 668

Motor Kw (each) 16 16 16 16 16 16 16 16 16 16 16 16

Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960

Heat exchanger type High Efficiency Copper Tube with Aluminum Fins

Chilled water cooler

Type Shell and tube high efficiency heat exchanger

Water side working pressure(KgSq cm) 14

Nominal flow(msup3h) 451 612 793 917 1042 1224 1396 1477 1586 1809 1999 2127

Water resistance(kPa)

50 50 55 55 58 58 58 60 60 65 65 65

Water pipe diameter(DN) 100 100 125 125 150 150 150 150 150 200 200 200

Refrigerant

Type R134a

Charge Circuit (kg) 130 215 250 300 175175 185185 210230 250250 275275 210210210 210210230 210210250

No of Circuits 1 1 1 1 2 2 2 2 2 3 3 3

Outline dimension

length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650

width(mm) 2200

height(mm) 2400

Net weight of unit(kg) 3424 4219 4476 5355 6173 7402 7504 7706 7889 9058 9585 10018

Operating weight of unit(kg) 3687 4489 4883 5810 6631 7950 8061 8282 8570 9779 10354 10665

Noise dB(A) 74 74 74 78 78 78 78 79 79 80 80 80

Note 1 The nominal cooling capacities (stated above) are at chilled water temperatures of 127˚c and ambient of 35˚c 2 Fouling Factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above 6 Noise dB Sound pressure level at 10 meters

LS Air-Cooled Screw Chillers 07

Ratings - High Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

5 299 69 297 74 272 78 262 83 252 107 232 112

7 319 72 308 77 290 81 280 86 263 116 250 116

10 339 76 332 80 320 85 309 90 289 117 278 121

12 348 78 334 83 328 88 317 93 306 120 295 125

15 357 80 344 86 335 92 322 96 311 125 309 130

SA100

5 392 93 385 99 375 105 362 111 332 137 309 143

7 409 97 392 109 380 119 367 145 345 150 332 148

10 421 102 403 112 391 125 376 150 353 152 349 156

12 439 105 420 115 406 138 388 153 376 154 382 161

15 450 109 439 120 423 142 398 156 388 161 393 167

SA125

5 496 111 475 119 451 126 435 372 422 162 393 168

7 529 116 507 124 481 131 465 398 443 194 423 175

10 578 122 557 129 531 138 513 440 491 206 470 183

12 612 126 590 134 561 142 543 465 519 212 499 190

15 661 131 636 139 606 148 586 502 560 219 539 197

SA150

5 622 152 596 162 566 172 545 182 492 214 458 199

7 662 158 636 168 603 178 582 188 520 226 492 206

10 725 166 698 177 664 188 642 198 582 233 547 217

12 767 172 739 183 702 194 680 205 616 240 581 224

15 827 178 797 189 759 202 733 213 665 249 627 233

SA170

5 689 185 660 197 662 208 604 206 579 264 539 275

7 704 192 675 204 645 216 626 213 608 274 579 285

10 724 202 694 214 677 227 642 224 626 287 644 300

12 750 208 719 221 692 235 684 231 645 297 684 310

15 788 216 733 229 728 245 704 241 663 310 738 322

SA210

5 758 202 790 215 710 228 692 239 666 296 614 309

7 778 210 743 223 730 237 702 248 689 307 667 320

10 801 221 776 235 741 249 721 260 709 323 701 336

12 817 228 799 243 782 258 751 269 735 334 727 348

15 997 237 956 252 907 268 773 280 842 346 840 362

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 08

Ratings - High Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA225

5 958 267 973 278 992 289 821 298 768 335 745 317

7 978 296 993 309 1012 321 838 331 787 344 760 352

10 1163 299 1181 312 1204 324 997 335 936 351 904 356

12 1232 305 1251 319 1275 331 1056 341 994 357 958 363

15 1330 311 1350 325 1376 337 1140 348 1073 370 1034 370

SA250

5 1077 300 1094 313 1115 325 923 335 869 348 745 356

7 1099 333 1116 348 1138 361 942 372 887 387 760 396

10 1308 336 1328 351 1354 365 1121 376 1056 391 904 400

12 1385 343 1406 358 1433 372 1187 384 1118 399 958 408

15 1495 350 1518 365 1547 379 1281 391 1206 406 1034 416

SA270

5 1145 256 1096 272 1041 313 1005 304 932 383 901 400

7 1220 265 1171 281 1111 325 1074 316 924 427 968 414

10 1335 278 1286 296 1224 341 1184 332 1104 418 1076 434

12 1413 288 1361 303 1295 353 1253 343 1168 432 1143 450

15 1526 388 1470 316 1397 367 1353 356 1260 448 1233 467

SA300

5 1243 307 1191 323 1131 343 1077 365 1000 460 966 479

7 1325 319 1272 335 1206 356 1152 379 1034 452 1038 497

10 1450 334 1396 353 1329 374 1269 398 1184 501 1154 522

12 1534 376 1477 364 1406 387 1345 411 1252 518 1226 540

15 1656 391 1596 379 1518 402 1451 426 1352 539 1323 560

SA325

5 1380 384 1402 401 1429 417 1183 430 1109 446 745 457

7 1408 427 1430 446 1458 463 1207 477 1132 496 760 508

10 1676 431 1702 450 1735 467 1437 482 1347 501 904 513

12 1775 440 1802 459 1837 477 1521 492 1426 511 958 523

15 1915 448 1945 468 1983 486 1642 501 1540 521 1034 533

SA350

5 1511 421 1534 439 1564 456 1295 470 1218 489 745 500

7 1542 467 1566 488 1596 507 1322 522 1243 543 760 556

10 1835 472 1863 493 1899 512 1573 528 1479 548 904 561

12 1943 481 1973 502 2011 522 1666 538 1566 559 958 572

15 2097 491 2129 512 2171 532 1798 549 1690 570 1034 583

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling Factor is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 09

Ratings - Standard Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

45 263 71 295 75 240 80 232 84 212 105 196 108

5 272 72 303 76 247 81 238 85 220 106 202 111

6 280 72 314 77 255 81 246 87 227 106 210 112

7 290 74 325 79 263 83 255 89 235 109 218 115

10 316 78 355 82 291 88 281 93 260 115 241 120

12 335 81 286 85 307 91 297 96 275 119 257 124

15 361 82 286 89 332 95 320 99 296 124 277 128

SA100

45 335 93 343 336 327 105 315 111 289 138 269 143

5 363 94 348 341 330 106 319 112 291 139 272 144

6 374 96 359 352 341 108 330 113 301 140 282 146

7 386 98 371 364 352 110 341 116 314 143 291 149

10 424 103 407 400 388 116 374 122 346 151 326 157

12 448 106 432 423 410 119 399 127 366 155 345 164

15 483 110 465 457 443 123 430 132 394 164 372 169

SA125

45 473 123 453 130 429 139 414 407 403 178 374 186

5 477 123 457 131 434 140 419 411 406 179 379 187

6 493 125 473 133 448 142 434 424 421 181 392 190

7 508 128 488 137 463 145 447 440 435 186 407 194

10 557 134 535 143 510 152 494 486 482 194 452 202

12 589 140 568 148 538 157 522 514 508 200 480 210

15 636 145 612 153 582 164 564 555 549 208 518 217

SA150

45 546 143 523 153 498 162 477 170 431 201 402 187

5 551 144 529 154 503 163 483 172 436 201 407 188

6 569 146 546 155 519 164 502 173 451 205 421 191

7 588 150 564 159 535 168 517 178 468 210 436 194

10 643 157 620 167 589 178 570 187 517 220 485 205

12 681 163 656 173 624 183 604 193 547 227 515 211

15 734 168 707 179 673 191 651 201 590 236 555 220

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 10

Ratings - Standard Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA170

45 571 159 547 171 547 179 501 177 477 227 445 236

5 576 159 553 170 554 180 506 178 485 229 451 238

6 596 162 571 173 571 182 524 180 501 232 468 242

7 614 166 591 177 591 187 541 184 519 234 485 246

10 673 175 649 185 650 196 596 194 574 248 539 259

12 711 180 685 192 689 203 631 200 607 257 572 268

15 768 187 739 198 742 211 681 209 655 268 617 278

SA210

45 718 188 688 201 653 213 629 222 580 276 534 288

5 724 189 695 202 659 214 635 223 586 276 540 289

6 749 192 718 204 682 216 658 228 606 281 565 292

7 773 197 741 208 704 221 680 232 628 287 587 299

10 846 206 814 219 775 233 750 243 694 302 651 315

12 895 214 862 228 820 241 793 251 734 313 692 325

15 965 221 929 236 886 250 856 262 820 323 749 338

SA270

45 992 241 952 257 905 294 873 287 809 360 782 374

5 1004 242 962 257 913 296 882 288 817 363 791 378

6 1038 245 993 261 944 300 912 292 845 367 818 383

7 1070 250 1029 266 975 307 942 298 876 374 849 392

10 1172 263 1129 279 1074 322 1039 314 969 395 944 411

12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424

15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442

SA320

45 1091 288 1047 304 994 323 947 344 878 434 849 452

5 1102 290 1056 306 1003 325 956 346 887 437 857 455

6 1138 295 1091 311 1038 330 990 351 916 443 888 462

7 1175 302 1128 318 1070 338 1021 359 950 448 921 471

10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495

12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512

15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 11

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

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MP

307

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135

D24

E

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AIG

AI9

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9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

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C

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CONT

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309

307

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CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

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F15

A

EE

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223

220

222

221

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COM

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CHXC20

120

0

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110

111

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C0Y0

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Y3Y7

Y6Y5

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X2X3

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224

225

226

COM

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2C2B

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122

123

124

112

113

HP LP

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125

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501

502

503

504

505

506

507

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341 -B

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402

401

403

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406

405

408

407

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R2 R2

302

303

106

303

302

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2

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106

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101

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231

232

230

231

232

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AIG

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305

306

123

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123

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305

306

304

245

244

246

245

244

246

245

244

246

CH

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D24

125

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230

231

232

233

FANS

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237

234

KM1

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EC

235

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240

241

242

243

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244

245

246

247

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233

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247 24

7

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FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

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FRO

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50

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TER

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35V0

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37EK

DD

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1 2 43NOTE

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LOCA

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ON C

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ODY

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TO

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TER

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L

FROM

TO

USER

S M

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302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

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F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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-B

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AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

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88F

7-A

88F

1-B

331

329

51F1

51F3

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88F

3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

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B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

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F1

BU1 FM

1-B

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F1

BV1

BW1

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F2

BU2 FM

2-B

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F2

BV2

BW2

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F3

BU3 FM

3-B

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F3

BV3

BW3

-B88

F4

BU4 FM

4-B

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F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

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MP

301

301

230 23

123

223

323

0

231

232

233

230

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123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

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524

6

KM1

KM3

KM2

247

-B-B

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MP

304

304

244 24

524

624

724

4

245

246

247

244

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130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

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CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

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060

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MAI

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TO C

ONT

ROL

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L

3

FRO

MT

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ONT

ROL

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2

THE

SE PA

RTS

ARE

LOCA

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CHIL

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Note

1

T

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PART

S AR

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CATE

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CO

NTRO

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NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

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OP

SGL

EMER

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CYAB

NORM

AL S

GL-A

MOT

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ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

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NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

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STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

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C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

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ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

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PRE

SSUR

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ITTE

R

23CP

COND

PRE

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E TRA

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R

24IT

CURR

ENT

TRAN

SDUC

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IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

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AUX

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27XC

AUX

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)

28PY

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VAL

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SEL

ECTR

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ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

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ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

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NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

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SE

38V0

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RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Ratings - High Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

5 299 69 297 74 272 78 262 83 252 107 232 112

7 319 72 308 77 290 81 280 86 263 116 250 116

10 339 76 332 80 320 85 309 90 289 117 278 121

12 348 78 334 83 328 88 317 93 306 120 295 125

15 357 80 344 86 335 92 322 96 311 125 309 130

SA100

5 392 93 385 99 375 105 362 111 332 137 309 143

7 409 97 392 109 380 119 367 145 345 150 332 148

10 421 102 403 112 391 125 376 150 353 152 349 156

12 439 105 420 115 406 138 388 153 376 154 382 161

15 450 109 439 120 423 142 398 156 388 161 393 167

SA125

5 496 111 475 119 451 126 435 372 422 162 393 168

7 529 116 507 124 481 131 465 398 443 194 423 175

10 578 122 557 129 531 138 513 440 491 206 470 183

12 612 126 590 134 561 142 543 465 519 212 499 190

15 661 131 636 139 606 148 586 502 560 219 539 197

SA150

5 622 152 596 162 566 172 545 182 492 214 458 199

7 662 158 636 168 603 178 582 188 520 226 492 206

10 725 166 698 177 664 188 642 198 582 233 547 217

12 767 172 739 183 702 194 680 205 616 240 581 224

15 827 178 797 189 759 202 733 213 665 249 627 233

SA170

5 689 185 660 197 662 208 604 206 579 264 539 275

7 704 192 675 204 645 216 626 213 608 274 579 285

10 724 202 694 214 677 227 642 224 626 287 644 300

12 750 208 719 221 692 235 684 231 645 297 684 310

15 788 216 733 229 728 245 704 241 663 310 738 322

SA210

5 758 202 790 215 710 228 692 239 666 296 614 309

7 778 210 743 223 730 237 702 248 689 307 667 320

10 801 221 776 235 741 249 721 260 709 323 701 336

12 817 228 799 243 782 258 751 269 735 334 727 348

15 997 237 956 252 907 268 773 280 842 346 840 362

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 08

Ratings - High Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA225

5 958 267 973 278 992 289 821 298 768 335 745 317

7 978 296 993 309 1012 321 838 331 787 344 760 352

10 1163 299 1181 312 1204 324 997 335 936 351 904 356

12 1232 305 1251 319 1275 331 1056 341 994 357 958 363

15 1330 311 1350 325 1376 337 1140 348 1073 370 1034 370

SA250

5 1077 300 1094 313 1115 325 923 335 869 348 745 356

7 1099 333 1116 348 1138 361 942 372 887 387 760 396

10 1308 336 1328 351 1354 365 1121 376 1056 391 904 400

12 1385 343 1406 358 1433 372 1187 384 1118 399 958 408

15 1495 350 1518 365 1547 379 1281 391 1206 406 1034 416

SA270

5 1145 256 1096 272 1041 313 1005 304 932 383 901 400

7 1220 265 1171 281 1111 325 1074 316 924 427 968 414

10 1335 278 1286 296 1224 341 1184 332 1104 418 1076 434

12 1413 288 1361 303 1295 353 1253 343 1168 432 1143 450

15 1526 388 1470 316 1397 367 1353 356 1260 448 1233 467

SA300

5 1243 307 1191 323 1131 343 1077 365 1000 460 966 479

7 1325 319 1272 335 1206 356 1152 379 1034 452 1038 497

10 1450 334 1396 353 1329 374 1269 398 1184 501 1154 522

12 1534 376 1477 364 1406 387 1345 411 1252 518 1226 540

15 1656 391 1596 379 1518 402 1451 426 1352 539 1323 560

SA325

5 1380 384 1402 401 1429 417 1183 430 1109 446 745 457

7 1408 427 1430 446 1458 463 1207 477 1132 496 760 508

10 1676 431 1702 450 1735 467 1437 482 1347 501 904 513

12 1775 440 1802 459 1837 477 1521 492 1426 511 958 523

15 1915 448 1945 468 1983 486 1642 501 1540 521 1034 533

SA350

5 1511 421 1534 439 1564 456 1295 470 1218 489 745 500

7 1542 467 1566 488 1596 507 1322 522 1243 543 760 556

10 1835 472 1863 493 1899 512 1573 528 1479 548 904 561

12 1943 481 1973 502 2011 522 1666 538 1566 559 958 572

15 2097 491 2129 512 2171 532 1798 549 1690 570 1034 583

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling Factor is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 09

Ratings - Standard Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

45 263 71 295 75 240 80 232 84 212 105 196 108

5 272 72 303 76 247 81 238 85 220 106 202 111

6 280 72 314 77 255 81 246 87 227 106 210 112

7 290 74 325 79 263 83 255 89 235 109 218 115

10 316 78 355 82 291 88 281 93 260 115 241 120

12 335 81 286 85 307 91 297 96 275 119 257 124

15 361 82 286 89 332 95 320 99 296 124 277 128

SA100

45 335 93 343 336 327 105 315 111 289 138 269 143

5 363 94 348 341 330 106 319 112 291 139 272 144

6 374 96 359 352 341 108 330 113 301 140 282 146

7 386 98 371 364 352 110 341 116 314 143 291 149

10 424 103 407 400 388 116 374 122 346 151 326 157

12 448 106 432 423 410 119 399 127 366 155 345 164

15 483 110 465 457 443 123 430 132 394 164 372 169

SA125

45 473 123 453 130 429 139 414 407 403 178 374 186

5 477 123 457 131 434 140 419 411 406 179 379 187

6 493 125 473 133 448 142 434 424 421 181 392 190

7 508 128 488 137 463 145 447 440 435 186 407 194

10 557 134 535 143 510 152 494 486 482 194 452 202

12 589 140 568 148 538 157 522 514 508 200 480 210

15 636 145 612 153 582 164 564 555 549 208 518 217

SA150

45 546 143 523 153 498 162 477 170 431 201 402 187

5 551 144 529 154 503 163 483 172 436 201 407 188

6 569 146 546 155 519 164 502 173 451 205 421 191

7 588 150 564 159 535 168 517 178 468 210 436 194

10 643 157 620 167 589 178 570 187 517 220 485 205

12 681 163 656 173 624 183 604 193 547 227 515 211

15 734 168 707 179 673 191 651 201 590 236 555 220

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 10

Ratings - Standard Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA170

45 571 159 547 171 547 179 501 177 477 227 445 236

5 576 159 553 170 554 180 506 178 485 229 451 238

6 596 162 571 173 571 182 524 180 501 232 468 242

7 614 166 591 177 591 187 541 184 519 234 485 246

10 673 175 649 185 650 196 596 194 574 248 539 259

12 711 180 685 192 689 203 631 200 607 257 572 268

15 768 187 739 198 742 211 681 209 655 268 617 278

SA210

45 718 188 688 201 653 213 629 222 580 276 534 288

5 724 189 695 202 659 214 635 223 586 276 540 289

6 749 192 718 204 682 216 658 228 606 281 565 292

7 773 197 741 208 704 221 680 232 628 287 587 299

10 846 206 814 219 775 233 750 243 694 302 651 315

12 895 214 862 228 820 241 793 251 734 313 692 325

15 965 221 929 236 886 250 856 262 820 323 749 338

SA270

45 992 241 952 257 905 294 873 287 809 360 782 374

5 1004 242 962 257 913 296 882 288 817 363 791 378

6 1038 245 993 261 944 300 912 292 845 367 818 383

7 1070 250 1029 266 975 307 942 298 876 374 849 392

10 1172 263 1129 279 1074 322 1039 314 969 395 944 411

12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424

15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442

SA320

45 1091 288 1047 304 994 323 947 344 878 434 849 452

5 1102 290 1056 306 1003 325 956 346 887 437 857 455

6 1138 295 1091 311 1038 330 990 351 916 443 888 462

7 1175 302 1128 318 1070 338 1021 359 950 448 921 471

10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495

12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512

15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 11

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

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HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

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-B AI4

AO2

ACO

M

TO E

XD-B

DVP

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ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

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3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

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D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

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MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

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TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

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123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

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-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

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PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

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TO E

LEC

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(ETS

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FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

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STOP

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CONT

ACTO

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LM

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CURR

ENT-B

FRO

M S

TART

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NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

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TART

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NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

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PY -CSV

1-C

SV2

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3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

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136

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COM

-

DVP

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0V24

V

G

OUT

V0+

I0+

V1+

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C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

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AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

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24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

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135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

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NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

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TART

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NEL

308

309

307

ELEC

TRIC

AL PA

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1FS

FLO

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CH

2PU

CHW

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STAR

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6M

PM

OTO

R PR

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LAY

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HIGH

PER

SSUR

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100

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16TE

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19TE

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RMER

40EK

DD

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OD

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NOM

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SO

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ALVE

42PB

EMER

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CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

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NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

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24RS

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HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

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3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

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CH1

FGI-

L-

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L+FG

I-L-

L+

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CH2

CH3

CH4

0V24

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G

CH1

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CH2

CH3

CH4

0V

COM

D24

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78 AI

5AI

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IT-A

AO1

ACO

M

TO E

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DVP

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ACH

1

COM

I+V+

0V24

V

GCO

MI+

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COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

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AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

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PY -ASV

1-A

SV2

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3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

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D

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CH3

CH4

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COM

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78 AI

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IT-B

COM

D24

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TO E

XD-B

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COM

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AI4

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TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

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C

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12

56

78

ETS

2122

2425

26+

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412

0

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D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

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107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

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COM

-

DVP

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XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

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DA

AD

RS-4

85

+

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AO1

ACO

M

TO E

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78 AI

8AI

G

IT-B

78 AI

7AI

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IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

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FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

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135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

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LM

OTOR

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ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

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NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

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NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

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W S

WIT

CH

2PU

CHW

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P IN

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SGL

FRO

M U

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REM

OTE

STAR

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OP

SIGN

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USE

R

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REM

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6M

PM

OTO

R PR

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HIGH

PER

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ITCH

10O

PO

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IFF

PRES

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ITCH

11TE

01EC

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100

12TE

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100

13TE

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0

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RE S

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R A

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0

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T TEM

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TURE

SENS

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0

16TE

06FI

N TE

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RE S

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R B

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0

17TE

07SU

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0

18TE

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T TEM

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BPT

100

19TE

09FI

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RE S

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R C

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0

20TE

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RE SE

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CPT

100

21TE

11EX

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T TEM

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TURE

SENS

OR C

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0

22EP

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R

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E TRA

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R

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TRAN

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26CH

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27XC

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CASE

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36N

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38V0

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40EK

DD

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R M

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ID V

ALVE

42PB

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TOP

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CH

1 2 43NOTE

SUPP

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BY

USER

S

LOCA

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ON

CHIL

LER

BODY

FRO

MT

O S

TART

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NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

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T

L+FG

I-L-

L+

L+L-

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L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

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DVP

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I-L-

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CH2

CH3

CH4

0V

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78 AI

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M

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1

COM

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V

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COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

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DVP

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AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

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122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

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2-A

KM3

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PY -ASV

1-A

SV2

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3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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N

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7C7B

7A8C

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CH1

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78 AI

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56

78

ETS

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412

0

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56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

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KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

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MP

301

230

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107

D24

106

107

E

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101

102

D24SW

RS

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103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

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MP

304

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124

D24

E

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AIG

AI6

AI6

AIG AI

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6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

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240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

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233

233

233

247 24

7

247

FAN

FAN

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R2R0

2R2R0

2

R2R0

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PB

EE

E

D24

D24

POW

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PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

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(ETS

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TO E

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EXPV

ALVE

(ETS

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FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

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CONT

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CONT

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NAL

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24XC

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25PY

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25

28SV

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75

29SV

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50

30HQ

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TER

31FA

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32M

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ED CA

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T BR

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R

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ER

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35V0

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36TR

TRAN

SFO

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37EK

DD

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R M

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-ETS

38EC

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39

PBEM

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RNCY

STO

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1 2 43NOTE

SUPP

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BY U

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LOCA

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ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

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F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

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-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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-B

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AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

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M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

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88F

3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

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BT0

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VP-B

D24

130

11 1412L2 L3L1

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F1

AV1

AW1

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F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

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F1

BU1 FM

1-B

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F1

BV1

BW1

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F2

BU2 FM

2-B

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F2

BV2

BW2

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F3

BU3 FM

3-B

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F3

BV3

BW3

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F4

BU4 FM

4-B

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F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

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MP

301

301

230 23

123

223

323

0

231

232

233

230

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123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

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MP

304

304

244 24

524

624

724

4

245

246

247

244

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130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

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CT-A

AI7

T2

BC2

BC1

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T2

3PH

380V

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060

HZ

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3

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ONT

ROL

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2

THE

SE PA

RTS

ARE

LOCA

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CHIL

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Note

1

T

HESE

PART

S AR

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CATE

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CO

NTRO

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STAR

TER

PNL

CONT

ROL

PNL

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NORM

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CU

RREN

T-A

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ANEL TO

CO

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NEL

CONT

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GNAL

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TER

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CONT

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BODY

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NORM

AL SG

L-B

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TRAN

SDUC

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LCU

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T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

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F5

AV5

AW5

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F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Ratings - High Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA225

5 958 267 973 278 992 289 821 298 768 335 745 317

7 978 296 993 309 1012 321 838 331 787 344 760 352

10 1163 299 1181 312 1204 324 997 335 936 351 904 356

12 1232 305 1251 319 1275 331 1056 341 994 357 958 363

15 1330 311 1350 325 1376 337 1140 348 1073 370 1034 370

SA250

5 1077 300 1094 313 1115 325 923 335 869 348 745 356

7 1099 333 1116 348 1138 361 942 372 887 387 760 396

10 1308 336 1328 351 1354 365 1121 376 1056 391 904 400

12 1385 343 1406 358 1433 372 1187 384 1118 399 958 408

15 1495 350 1518 365 1547 379 1281 391 1206 406 1034 416

SA270

5 1145 256 1096 272 1041 313 1005 304 932 383 901 400

7 1220 265 1171 281 1111 325 1074 316 924 427 968 414

10 1335 278 1286 296 1224 341 1184 332 1104 418 1076 434

12 1413 288 1361 303 1295 353 1253 343 1168 432 1143 450

15 1526 388 1470 316 1397 367 1353 356 1260 448 1233 467

SA300

5 1243 307 1191 323 1131 343 1077 365 1000 460 966 479

7 1325 319 1272 335 1206 356 1152 379 1034 452 1038 497

10 1450 334 1396 353 1329 374 1269 398 1184 501 1154 522

12 1534 376 1477 364 1406 387 1345 411 1252 518 1226 540

15 1656 391 1596 379 1518 402 1451 426 1352 539 1323 560

SA325

5 1380 384 1402 401 1429 417 1183 430 1109 446 745 457

7 1408 427 1430 446 1458 463 1207 477 1132 496 760 508

10 1676 431 1702 450 1735 467 1437 482 1347 501 904 513

12 1775 440 1802 459 1837 477 1521 492 1426 511 958 523

15 1915 448 1945 468 1983 486 1642 501 1540 521 1034 533

SA350

5 1511 421 1534 439 1564 456 1295 470 1218 489 745 500

7 1542 467 1566 488 1596 507 1322 522 1243 543 760 556

10 1835 472 1863 493 1899 512 1573 528 1479 548 904 561

12 1943 481 1973 502 2011 522 1666 538 1566 559 958 572

15 2097 491 2129 512 2171 532 1798 549 1690 570 1034 583

Note 1 High ambient models are suitable for operation in ambient temperatures up to 52˚c (125˚F) 2 Fouling Factor is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 09

Ratings - Standard Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

45 263 71 295 75 240 80 232 84 212 105 196 108

5 272 72 303 76 247 81 238 85 220 106 202 111

6 280 72 314 77 255 81 246 87 227 106 210 112

7 290 74 325 79 263 83 255 89 235 109 218 115

10 316 78 355 82 291 88 281 93 260 115 241 120

12 335 81 286 85 307 91 297 96 275 119 257 124

15 361 82 286 89 332 95 320 99 296 124 277 128

SA100

45 335 93 343 336 327 105 315 111 289 138 269 143

5 363 94 348 341 330 106 319 112 291 139 272 144

6 374 96 359 352 341 108 330 113 301 140 282 146

7 386 98 371 364 352 110 341 116 314 143 291 149

10 424 103 407 400 388 116 374 122 346 151 326 157

12 448 106 432 423 410 119 399 127 366 155 345 164

15 483 110 465 457 443 123 430 132 394 164 372 169

SA125

45 473 123 453 130 429 139 414 407 403 178 374 186

5 477 123 457 131 434 140 419 411 406 179 379 187

6 493 125 473 133 448 142 434 424 421 181 392 190

7 508 128 488 137 463 145 447 440 435 186 407 194

10 557 134 535 143 510 152 494 486 482 194 452 202

12 589 140 568 148 538 157 522 514 508 200 480 210

15 636 145 612 153 582 164 564 555 549 208 518 217

SA150

45 546 143 523 153 498 162 477 170 431 201 402 187

5 551 144 529 154 503 163 483 172 436 201 407 188

6 569 146 546 155 519 164 502 173 451 205 421 191

7 588 150 564 159 535 168 517 178 468 210 436 194

10 643 157 620 167 589 178 570 187 517 220 485 205

12 681 163 656 173 624 183 604 193 547 227 515 211

15 734 168 707 179 673 191 651 201 590 236 555 220

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 10

Ratings - Standard Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA170

45 571 159 547 171 547 179 501 177 477 227 445 236

5 576 159 553 170 554 180 506 178 485 229 451 238

6 596 162 571 173 571 182 524 180 501 232 468 242

7 614 166 591 177 591 187 541 184 519 234 485 246

10 673 175 649 185 650 196 596 194 574 248 539 259

12 711 180 685 192 689 203 631 200 607 257 572 268

15 768 187 739 198 742 211 681 209 655 268 617 278

SA210

45 718 188 688 201 653 213 629 222 580 276 534 288

5 724 189 695 202 659 214 635 223 586 276 540 289

6 749 192 718 204 682 216 658 228 606 281 565 292

7 773 197 741 208 704 221 680 232 628 287 587 299

10 846 206 814 219 775 233 750 243 694 302 651 315

12 895 214 862 228 820 241 793 251 734 313 692 325

15 965 221 929 236 886 250 856 262 820 323 749 338

SA270

45 992 241 952 257 905 294 873 287 809 360 782 374

5 1004 242 962 257 913 296 882 288 817 363 791 378

6 1038 245 993 261 944 300 912 292 845 367 818 383

7 1070 250 1029 266 975 307 942 298 876 374 849 392

10 1172 263 1129 279 1074 322 1039 314 969 395 944 411

12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424

15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442

SA320

45 1091 288 1047 304 994 323 947 344 878 434 849 452

5 1102 290 1056 306 1003 325 956 346 887 437 857 455

6 1138 295 1091 311 1038 330 990 351 916 443 888 462

7 1175 302 1128 318 1070 338 1021 359 950 448 921 471

10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495

12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512

15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 11

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

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260

261

262

263

FANS

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132

133

114

115

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135

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FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

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FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

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308

309

134

R2R2

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134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

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LS Air-Cooled Screw Chillers 21

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101

102

100

103

105

106

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107

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223

220

222

221

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120

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C0Y0

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225

226

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122

123

124

112

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HP LP

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506

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401

403

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406

405

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302

303

106

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231

232

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231

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305

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305

306

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245

244

246

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244

246

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231

232

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240

241

242

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327

325

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51F7

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331

329

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51F3

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233

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246

245

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330

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301

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231

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305

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630

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1 4325 6

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F5

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F6

AU6 FM

6-A

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F6

AV6

AW6

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F5

BU5 FM

5-B

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F5

BV5

BW5

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F6

BU6 FM

6-B

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F6

BV6

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88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

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F7

AU7 FM

7-A

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F7

AV7

AW7

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F8

AU8 FM

8-A

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F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Ratings - Standard Ambient Models

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA075

45 263 71 295 75 240 80 232 84 212 105 196 108

5 272 72 303 76 247 81 238 85 220 106 202 111

6 280 72 314 77 255 81 246 87 227 106 210 112

7 290 74 325 79 263 83 255 89 235 109 218 115

10 316 78 355 82 291 88 281 93 260 115 241 120

12 335 81 286 85 307 91 297 96 275 119 257 124

15 361 82 286 89 332 95 320 99 296 124 277 128

SA100

45 335 93 343 336 327 105 315 111 289 138 269 143

5 363 94 348 341 330 106 319 112 291 139 272 144

6 374 96 359 352 341 108 330 113 301 140 282 146

7 386 98 371 364 352 110 341 116 314 143 291 149

10 424 103 407 400 388 116 374 122 346 151 326 157

12 448 106 432 423 410 119 399 127 366 155 345 164

15 483 110 465 457 443 123 430 132 394 164 372 169

SA125

45 473 123 453 130 429 139 414 407 403 178 374 186

5 477 123 457 131 434 140 419 411 406 179 379 187

6 493 125 473 133 448 142 434 424 421 181 392 190

7 508 128 488 137 463 145 447 440 435 186 407 194

10 557 134 535 143 510 152 494 486 482 194 452 202

12 589 140 568 148 538 157 522 514 508 200 480 210

15 636 145 612 153 582 164 564 555 549 208 518 217

SA150

45 546 143 523 153 498 162 477 170 431 201 402 187

5 551 144 529 154 503 163 483 172 436 201 407 188

6 569 146 546 155 519 164 502 173 451 205 421 191

7 588 150 564 159 535 168 517 178 468 210 436 194

10 643 157 620 167 589 178 570 187 517 220 485 205

12 681 163 656 173 624 183 604 193 547 227 515 211

15 734 168 707 179 673 191 651 201 590 236 555 220

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 10

Ratings - Standard Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA170

45 571 159 547 171 547 179 501 177 477 227 445 236

5 576 159 553 170 554 180 506 178 485 229 451 238

6 596 162 571 173 571 182 524 180 501 232 468 242

7 614 166 591 177 591 187 541 184 519 234 485 246

10 673 175 649 185 650 196 596 194 574 248 539 259

12 711 180 685 192 689 203 631 200 607 257 572 268

15 768 187 739 198 742 211 681 209 655 268 617 278

SA210

45 718 188 688 201 653 213 629 222 580 276 534 288

5 724 189 695 202 659 214 635 223 586 276 540 289

6 749 192 718 204 682 216 658 228 606 281 565 292

7 773 197 741 208 704 221 680 232 628 287 587 299

10 846 206 814 219 775 233 750 243 694 302 651 315

12 895 214 862 228 820 241 793 251 734 313 692 325

15 965 221 929 236 886 250 856 262 820 323 749 338

SA270

45 992 241 952 257 905 294 873 287 809 360 782 374

5 1004 242 962 257 913 296 882 288 817 363 791 378

6 1038 245 993 261 944 300 912 292 845 367 818 383

7 1070 250 1029 266 975 307 942 298 876 374 849 392

10 1172 263 1129 279 1074 322 1039 314 969 395 944 411

12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424

15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442

SA320

45 1091 288 1047 304 994 323 947 344 878 434 849 452

5 1102 290 1056 306 1003 325 956 346 887 437 857 455

6 1138 295 1091 311 1038 330 990 351 916 443 888 462

7 1175 302 1128 318 1070 338 1021 359 950 448 921 471

10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495

12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512

15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 11

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

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MAG

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LDED

CASE

D CI

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TRAN

SFO

RMER

1000

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CH

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PM

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TRAN

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F1-8

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FRO

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L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

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CHXC20

120

0RS

110

111

COM

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OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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P

Y4

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X0X1

X2X3

X4X5

X6X7

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24V

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HP LP

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FG1

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340

2

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E

124

224

225

226

COM

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2C2B

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227

-A -A

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126

127

130

112

113

HP LP

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131

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501

502

503

504

505

506

507

508

EKD

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KM2

341 -B

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KM2

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T2

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R2 R2

302

303

122

303

302

301

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2

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301

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122

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E

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101

102

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CH

231

232

230

231

232

230

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305

306

127

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304

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130

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127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

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131

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230

231

232

233

FANS

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237

234

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KM2

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EC

235

236

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240

241

242

243

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244

245

246

247

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233

233

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7

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TO U

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FRO

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302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

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9C9B

9A

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10ATE

10

COM

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24V

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L+FG

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L+L-

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CH3

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0V

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11C

11B

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11

E

253

250

252

251

254

255

256

257

KM1

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1-C

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260

261

262

263

FANS

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132

133

114

115

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134

135

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509

510

511

512

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136

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TO E

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(ETS

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FRO

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PLC

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FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

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308

309

134

R2R2

R2

KM1

KM3

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307

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135

D24

E

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134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

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LS Air-Cooled Screw Chillers 21

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101

102

100

103

105

106

104

107

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F15

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223

220

222

221

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120

0

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110

111

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224

225

226

COM

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122

123

124

112

113

HP LP

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501

502

503

504

505

506

507

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402

401

403

404

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KM2

406

405

408

407

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302

303

106

303

302

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301

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101

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231

232

230

231

232

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305

306

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KM3

KM2

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123

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305

306

304

245

244

246

245

244

246

245

244

246

CH

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125

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230

231

232

233

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237

234

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235

236

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240

241

242

243

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244

245

246

247

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233

233

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247 24

7

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FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

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CC

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9O

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IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

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6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

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E SW

ITCH

9O

LO

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EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

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ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

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VAL

VE

29ET

SEL

ECTR

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C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

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ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

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NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

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NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Ratings - Standard Ambient Models (Continued)

MODEL

Leaving Chilled Liquid

˚C

Condenser Air Entering Temperature ˚C

25 30 35 40 46 50

cool Power cool Power cool Power cool Power cool Power cool PowerKW KW KW KW KW KW KW KW KW KW KW KW

SA170

45 571 159 547 171 547 179 501 177 477 227 445 236

5 576 159 553 170 554 180 506 178 485 229 451 238

6 596 162 571 173 571 182 524 180 501 232 468 242

7 614 166 591 177 591 187 541 184 519 234 485 246

10 673 175 649 185 650 196 596 194 574 248 539 259

12 711 180 685 192 689 203 631 200 607 257 572 268

15 768 187 739 198 742 211 681 209 655 268 617 278

SA210

45 718 188 688 201 653 213 629 222 580 276 534 288

5 724 189 695 202 659 214 635 223 586 276 540 289

6 749 192 718 204 682 216 658 228 606 281 565 292

7 773 197 741 208 704 221 680 232 628 287 587 299

10 846 206 814 219 775 233 750 243 694 302 651 315

12 895 214 862 228 820 241 793 251 734 313 692 325

15 965 221 929 236 886 250 856 262 820 323 749 338

SA270

45 992 241 952 257 905 294 873 287 809 360 782 374

5 1004 242 962 257 913 296 882 288 817 363 791 378

6 1038 245 993 261 944 300 912 292 845 367 818 383

7 1070 250 1029 266 975 307 942 298 876 374 849 392

10 1172 263 1129 279 1074 322 1039 314 969 395 944 411

12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424

15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442

SA320

45 1091 288 1047 304 994 323 947 344 878 434 849 452

5 1102 290 1056 306 1003 325 956 346 887 437 857 455

6 1138 295 1091 311 1038 330 990 351 916 443 888 462

7 1175 302 1128 318 1070 338 1021 359 950 448 921 471

10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495

12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512

15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532

Note 1 Standard models are designed for operation in ambient temperatures up to 46˚c (115 ˚F) When ambient temperatures rise above 46˚c compressors will progressively unload to prevent trips on high pressuretemperaturecurrent 2 Fouling factor of evaporator is 0086 m2middotkkW 3 Specification may be changed without further notification 4 The unit conforms to standard ARI 550590-98 5 The cooling capacity and power supply is measured with the economizer 6 Power consumption values include compressors and fans

LS Air-Cooled Screw Chillers 11

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

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VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

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HP LP

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OP

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FG1

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HQ

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A

FAN

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2

3 4

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E

120

OUT

C0Y0

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Y3Y7

Y6Y5

DVP

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N

Y4

224

225

226

COM

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1C1B

1A

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2C2B

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3C3B

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4B4A

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COM

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78 AI

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1

COM

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CH3

COM

I+V+

COM

I+V+

COM

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CH5

CH6

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COM

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-

DVP

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G

OUT

SS C0

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85

+

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X6X7

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Y2Y3

227

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122

123

124

112

113

HP LP

OL

OP

MP

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125

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2-A

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1-A

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3-A

OUT

C0Y0

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Y3Y7

Y6Y5

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78 AI

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56

78

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56

78

ETS

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501

502

503

504

505

506

507

508EK

D

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341 -B

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402

401

403

404

KM2

KM2

406

405

408

407

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T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

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123

2

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KM3

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230

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107

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106

107

E

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101

102

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103

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231

232

230

231

232

230

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5

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305

306

123

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124

D24

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123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

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410

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LC

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125

CH

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411

230

231

232

233

FANS

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237

234

KM1

KM2

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EC

235

236

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240

241

242

243

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3SV

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244

245

246

247

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233

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247 24

7

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FRO

M P

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PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

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NL

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ENT-B

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M S

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CONT

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R

FROM

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0

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0

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0

19EP

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PRES

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TTER

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1-3

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ONT

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R)

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AUX

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Y (C

HW P

UMP)

24XC

AUX

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AULT

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75

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TER

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35V0

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36TR

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SFO

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37EK

DD

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R M

OD

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-ETS

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39

PBEM

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P SW

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1 2 43NOTE

SUPP

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BY U

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TED

ON C

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ODY

FROM

TO

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TER

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L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

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AX

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AU

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PB

R2 T2

380VTR

R02

T2

220V

R01

T01

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10A

S-A

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1M-A

S-A

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161 2M

158

1MS

AT1

AS1

AR1

NFB1

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301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

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-A

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S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

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MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

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88F

7-A

88F

1-B

331

329

51F1

51F3

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88F

3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

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D24

123

ABZ

BYBX

BWBV

BU

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BS1

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VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

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F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

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BU1 FM

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F1

BV1

BW1

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F2

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F2

BV2

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F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

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F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

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123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

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130

D24

127

130

D24

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AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

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CT-A

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3PH

380V

AC 5

060

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MAI

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WER

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AC 5

060

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N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

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OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

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F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Water Pressure Drop Through Evaporator

Line Symbol

A SA075 SA100

B SA125 SA150

C SA170 SA210

D SA250 SA270

E SA300

F SA325 SA350

Water Pressure Drop

Pres

sure

Dro

p (k

Pa)

Water Flow Rate (ls)

LS Air-Cooled Screw Chillers 12

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

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E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

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CONT

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LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

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223

220

222

221

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120

0

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111

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224

225

226

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122

123

124

112

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501

502

503

504

505

506

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402

401

403

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406

405

408

407

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302

303

106

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101

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231

232

230

231

232

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305

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305

306

304

245

244

246

245

244

246

245

244

246

CH

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125

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230

231

232

233

FANS

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237

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235

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240

241

242

243

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244

245

246

247

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233

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FOR FAULTINDICATIONFOR FAULTINDICATION

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TO

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302

303

301

305

306

304

11 1412L2 L3L1

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AX

AWAV

AU

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PB

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R02

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220V

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10A

S-A

2M-A

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161 2M

158

1MS

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AS1

AR1

NFB1

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301

302

303

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F1

AU1 FM

1

KM1

KM2

KM3

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2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

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MP-

B

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FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

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88F

7-A

88F

1-B

331

329

51F1

51F3

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88F

3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

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D24

123

ABZ

BYBX

BWBV

BU

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1M-B

BT1

BS1

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BT0

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VP-B

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130

11 1412L2 L3L1

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F1

AV1

AW1

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F2

AU2 FM

2-A

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F2

AV2

AW2

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F3

AU3 FM

3-A

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F3

AV3

AW3

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F4

AU4 FM

4-A

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F4

AV4

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CO

MP

MOT

OR

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F1

BU1 FM

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F1

BV1

BW1

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F2

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F2

BV2

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F3

BU3 FM

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F3

BV3

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F4

BU4 FM

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F4

BV4

BW4

CO

MP

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OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

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123

2

KM1

KM3

KM2

233

-A-A

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MP

301

301

230 23

123

223

323

0

231

232

233

230

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123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

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524

6

KM1

KM3

KM2

247

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MP

304

304

244 24

524

624

724

4

245

246

247

244

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130

D24

127

130

D24

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AIG

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8

AC2

AC1

R2 AIG

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380V

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3

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THE

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1

T

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CO

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STAR

TER

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CONT

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CO

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CONT

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CONT

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BODY

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NORM

AL SG

L-B

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TRAN

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LCU

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T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

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NAL-

BCO

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G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

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F5

AV5

AW5

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F6

AU6 FM

6-A

-A51

F6

AV6

AW6

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F5

BU5 FM

5-B

-B51

F5

BV5

BW5

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F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

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88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

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C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

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F1

CU1 FM

1-C

-C51

F1

CV1

CW1

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F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

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QUI

D S

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NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Operating Limitations

MODEL SA75 100 125 150 170 210

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 18 57 30 59 32 86 33 105 42 107 41 126

Evaporator Pressure Drop kPa 85 100 11 120 11 130 12 110 13 115 12 118

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 3509 4292 5508 6455 7827 8583

Standard Ambient Model 292 391 501 594 7151 7841

MODEL SA225 250 270 300 325 350

Min Max Min Max Min Max Min Max Min Max Min Max

Water Leaving Temp ˚C 45 to 15

Cooling Range (Entering ndash Leaving) ˚C 3 to 20

Evaporator Flow Rate m3h 49 138 53 155 48 159 55 188 57 200 64 220

Evaporator Pressure Drop kPa 15 122 18 128 18 128 21 134 21 134 22 138

Maximum Water side Pressure bar 10

Air Entering Temperature ˚C -10 to 52

Fan Available Static Pressure kPa 10

Maximum Refrigerant Side Pressure bar 16

Power Supply Voltage 3PH 380 50Hz 340 to 420

Max Running Current(A)High Ambient Model 978 11016 11439 12875 14091 15258

Standard Ambient Model 8935 10064 10451 11763 12874 1394

Max running Current values included compressors and fans

LS Air-Cooled Screw Chillers 13

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

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ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

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OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

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ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

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PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

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COM

-

DVP

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XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

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AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

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IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

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135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

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ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

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SGL

FRO

M U

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REM

OTE

STAR

TST

OP

SIGN

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OM

USE

R

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REM

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6M

PM

OTO

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LAY

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HIGH

PER

SSUR

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LO

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10O

PO

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IFF

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ITCH

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100

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100

13TE

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0

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PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

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RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

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RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

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TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

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RE SE

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CPT

100

21TE

11EX

HAUS

T TEM

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SENS

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0

22EP

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R

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R

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RELA

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27XC

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25

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75

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50

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TER

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CASE

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FILT

ER

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38V0

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40EK

DD

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R M

OD

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SO

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ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

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NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

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24RS

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HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

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T20

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B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

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COM

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CH5

CH6

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G

OUT

SS C0

X0X1

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RS-4

85

+

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X6X7

Y1C2

Y2Y3

227

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122

123

124

112

113

HP LP

OL

OP

MP

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-B -B

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125

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KM1

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2-A

KM3

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1-A

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3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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N

Y4

7C7B

7A8C

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78

ETS

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412

0

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56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

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T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

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MP

301

230

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107

D24

106

107

E

-A

R2

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101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

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MP

304

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124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

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240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

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233

233

233

247 24

7

247

FAN

FAN

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2

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PB

EE

E

D24

D24

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20VA

C 50

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Z

TO E

LEC

EXPV

ALVE

(ETS

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TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

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NL

STAR

TER P

NL

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ING

STOP

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SDUC

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T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

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TART

ER PA

NEL

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RMAL

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LMO

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SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

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ING

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STOP

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ELEC

TRIC

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RT L

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CH

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R

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0

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0

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0

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0

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0

19EP

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NAL

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Y (F

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50

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TER

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TO

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302

303

301

305

306

304

11 1412L2 L3L1

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161 2M

158

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301

302

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171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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122

D24 T2R2

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127

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323

321

51F1

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327

325

51F5

51F7

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331

329

51F1

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51F5

51F6

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231

233

244

246

245

247

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11 1412L2 L3L1

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F3

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303

122

302

30330

330

230

1

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233

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301

301

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123

223

323

0

231

232

233

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122

123

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305

306

127

305

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630

530

4

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KM1

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247

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304

304

244 24

524

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245

246

247

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130

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127

130

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MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Electrical Data

1 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 131 216 328 4 5

100 380 50 174 292 435 6 5

125 380 50 223 365 558 8 5

150 380 50 258 422 645 10 5

- High ambient model

SA MODEL Volts(V) Freq(Hz)Compressor Fans

RLA MCC Start Amps Qty RLA

075 380 50 214 271 535 4 5

100 380 50 256 317 640 6 5

125 380 50 327 404 818 8 5

150 380 50 380 490 951 10 5

2 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 161 271 403 6 5

ll 161 271 403 6 5

210 380 50l 174 292 435 6 5

ll 174 292 435 6 5

225 380 50l 174 292 435 6 5

ll 223 365 558 8 5

250 380 50l 193 317 483 8 5

ll 223 365 558 8 5

270 380 50l 223 365 558 8 5

ll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

170 380 50l 231 292 577 6 5

ll 231 292 577 6 5

210 380 50l 256 317 640 6 5

ll 256 317 640 6 5

225 380 50l 256 317 818 6 5

ll 327 404 818 8 5

250 380 50l 327 404 818 8 5

ll 327 404 818 8 5

270 380 50l 341 422 853 8 5

ll 341 422 853 8 5

LS Air-Cooled Screw Chillers 14

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

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2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

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TO E

LEC

EXPV

ALVE

(ETS

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FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

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CTRL

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SDUC

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LCU

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T-A

FRO

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CONT

ACTO

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COOL

ING

FANS

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STOP

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LM

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SGL

CURR

ENT-B

FRO

M S

TART

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NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

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COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

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-A AI1

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AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

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ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

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NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

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FRO

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REM

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STAR

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OP

SIGN

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USE

R

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REM

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6M

PM

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HIGH

PER

SSUR

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PRE

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10O

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IFF

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ITCH

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100

12TE

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100

13TE

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0

15TE

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TURE

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PT10

0

16TE

06FI

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RE S

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R B

PT10

0

17TE

07SU

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0

18TE

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100

19TE

09FI

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100

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27XC

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1 2 43NOTE

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BY

USER

S

LOCA

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ON

CHIL

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MT

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NEL

FRO

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CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

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FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

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CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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P

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SS

X0X1

X2X3

X4X5

X6X7

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24V

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HP LP

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340

2

3 4

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120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

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N

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224

225

226

COM

D24

1C1B

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2C2B

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CH5

CH6

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85

+

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227

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122

123

124

112

113

HP LP

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125

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2-A

KM3

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Y6Y5

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78

ETS

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56

78

ETS

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501

502

503

504

505

506

507

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D

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KM2

341 -B

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402

401

403

404

KM2

KM2

406

405

408

407

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T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

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123

2

KM1

KM3

KM2

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MP

301

230

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107

D24

106

107

E

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101

102

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103

PU

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231

232

230

231

232

230

AIG

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AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

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KM1

KM3

KM2

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MP

304

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124

D24

E

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AIG

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AIG AI

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123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

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410

TO P

LC

D24

125

CH

AO2

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411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

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240

241

242

243

PYSV

1SV

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2

244

245

246

247

FANS

RUN

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233

233

233

247 24

7

247

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FAN

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FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

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S M

CC

CONT

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302

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301

305

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302

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2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Electrical Data (Continued)

3 Compressor Unit- Standard ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 174 292 435 6 5

325 380 50

l 174 292 435 6 5

ll 174 292 435 6 5

lll 223 365 558 8 5

350 380 50

l 193 317 483 6 5

ll 193 317 483 6 5

lll 223 365 558 8 5

- High ambient model

SA MODEL Volts(V) Freq(Hz) SystemCompressor Fans

RLA MCC Start Amps Qty RLA

300 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 256 317 640 6 5

325 380 50

l 256 317 640 6 5

ll 256 317 640 6 5

lll 327 404 818 8 5

350 380 50

l 295 365 738 6 5

ll 295 365 738 6 5

lll 327 404 818 8 5

Note RLA Rated Load Amps MCC Maximum Continuous Current

LS Air-Cooled Screw Chillers 15

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

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REL

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12FM

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13FA

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101

102

100

103

121

122

120

123

COM

R21

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FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

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CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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P

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X0X1

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X4X5

X6X7

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24V

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PS02

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HP LP

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125

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A

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KM2

340

2

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V3V1

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NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

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2C2B

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3C3B

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COM

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227

-A -A

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126

127

130

112

113

HP LP

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131

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78

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78

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501

502

503

504

505

506

507

508

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KM2

341 -B

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KM2

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R2 R2

302

303

122

303

302

301

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101

102

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PU

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231

232

230

231

232

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305

306

127

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130

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127

130

305

306

304

245

244

246

245

244

246

245

244

246

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131

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230

231

232

233

FANS

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237

234

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235

236

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240

241

242

243

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244

245

246

247

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233

233

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7

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TO U

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302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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N

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9C9B

9A

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10ATE

10

COM

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L+FG

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CH3

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11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

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1-C

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260

261

262

263

FANS

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132

133

114

115

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134

135

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510

511

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136

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TO E

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(ETS

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PLC

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FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

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308

309

134

R2R2

R2

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307

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135

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134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

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LS Air-Cooled Screw Chillers 21

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101

102

100

103

105

106

104

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223

220

222

221

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120

0

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110

111

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224

225

226

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122

123

124

112

113

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501

502

503

504

505

506

507

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341 -B

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402

401

403

404

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KM2

406

405

408

407

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302

303

106

303

302

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301

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106

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101

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232

230

231

232

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305

306

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KM3

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123

124

305

306

304

245

244

246

245

244

246

245

244

246

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125

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230

231

232

233

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237

234

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KM2

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235

236

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240

241

242

243

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244

245

246

247

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233

233

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7

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FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

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CC

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0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Electrical Data (Continued)

High Ambient Model for 46˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 1156 1734 2339 3509 6417

SA-100 1501 2252 2861 4292 7683

SA-125 1935 2903 3672 5508 9816

SA-150 2261 3392 4303 6455 11409

SA-170 2742 4113 5218 7827 6927

SA-210 3021 4532 5722 8583 7683

SA-225 3436 5154 6533 9780 9816

SA-250 3870 5803 7344 11016 9816

SA-270 4274 6411 7626 11439 10239

SA-300 4521 6782 8583 12875 7683

SA-325 4956 7434 9394 14091 9816

SA-350 5426 8139 10172 15258 11409

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46˚c with leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

Standard Model for 35˚C Nominal Ambient Operation Electricity Supply 380350

Model NoChiller Total Power Input Nominal

Running AmpsMaximum

Running AmpsMaximumStart AmpsNominal Kw Maximum Kw

SA-75 829 1244 1508 2920 3924

SA-100 1104 1656 2040 3910 8280

SA-125 1451 2177 2624 5010 6672

SA-150 1679 2519 3073 5940 7719

SA-170 1868 2802 3532 7151 4398

SA-210 2208 3312 4080 7841 8280

SA-225 2555 3833 4664 8935 6672

SA-250 2708 4062 4954 10064 6672

SA-270 2902 4353 5248 10451 6672

SA-300 3312 4968 6120 11763 8280

SA-325 3569 5354 6704 12874 6672

SA-350 3896 5844 7084 13940 7719

Note 1 Chiller total power includes all compressors and condenser fans running 2 Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35˚c with a leaving chilled water temperature of 7˚c 3 Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values 4 Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5 Max running Amps values include compressors and fans

LS Air-Cooled Screw Chillers 16

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

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MAG

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CH

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PM

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101

102

100

103

121

122

120

123

COM

R21

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FSSW

D24

F15

A

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223

220

222

221

PU

COM

COM

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CHXC20

120

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110

111

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OUT

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124

224

225

226

COM

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126

127

130

112

113

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501

502

503

504

505

506

507

508

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341 -B

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302

303

122

303

302

301

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101

102

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231

232

230

231

232

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305

306

127

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130

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127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

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131

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230

231

232

233

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237

234

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235

236

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240

241

242

243

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244

245

246

247

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233

233

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302

303

301

305

306

304

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Y4

OUT

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11

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253

250

252

251

254

255

256

257

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260

261

262

263

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132

133

114

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134

135

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FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

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FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

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308

309

134

R2R2

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135

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134

135

308

309

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261

260

262

261

260

262

261

260

262

263 26

3

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102

100

103

105

106

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220

222

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224

225

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122

123

124

112

113

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501

502

503

504

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506

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402

401

403

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406

405

408

407

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302

303

106

303

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232

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231

232

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305

306

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305

306

304

245

244

246

245

244

246

245

244

246

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230

231

232

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235

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240

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242

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245

246

247

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233

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7

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FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

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LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

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E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

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PT10

0

12TE

02LC

HW TE

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0

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03FIN

TEMP

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URE S

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14TE

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15TE

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0

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0

17TE

07SU

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0

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T TEM

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TURE

SEN

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PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

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E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

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ID V

ALVE

75

29SV

3SO

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ID V

ALVE

50

30HQ

OIL

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TER

31FA

NCO

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NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

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R

33N

FNO

ISE

FILT

ER

34F1

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SE

35V0

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RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

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D VA

LVE

39

PBEM

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RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

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6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

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EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

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E TRA

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ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

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Y LI

QUI

D S

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VAL

VE

29ET

SEL

ECTR

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C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

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ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

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RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

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NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

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NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

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TART

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ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

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SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Chiller Control

Automatic PLC ControllerModel SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center The primary functions of the PLC are

To automatically start and stop the chiller in response to bullldquoCooling Demandrdquo signalsTo start and stop individual compressors and associated bullcondenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load To activate and control peripheral equipment (ie chilled water bull pumps)To continuously monitor operating temperatures and safety bull controls and display readouts both locally and remotely

Optimization ndash Main Auxiliary UnitFor multi-compressor units an optimization function is bull available to equalize the running time of each compressorcondenser assemblyFor multi chiller installations one unit can be selected as the bull ldquomasterrdquo and its controller will sequence up to 4 ldquoslaverdquo chillers (option)

Automatic and remote control of peripherals

Remote startstop function via cabled connectionbull OnOff of chiller and system peripherals together with bull functional monitoring can be achieved through remote BMS System

Time Table RunningUp to 3 startstop programmes day can be achieved

Soft Loading Function

This ensures that the chiller will operate stably during system start up when large fluctuations in cooling load can occur

Analogue data display functionThis function monitors and displays analog signals of

refrigeration system temperatures and pressures

Network Control FunctionModel SA liquid chillers have interfaces for RS-232 amp RS-485 bull and can work with MODBUS protocolsEach chiller can operate as a ldquoMasterrdquo or ldquoSlaverdquo unit in a group bull control network (option)

LS Air-Cooled Screw Chillers 17

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

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2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

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CH

6M

PM

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LAY

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RE T

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DUC

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9CT

CURR

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TRAN

SFO

RMER

1088

F1-8

MAG

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1151

F1-8

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MAL

REL

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12FM

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FAN

13FA

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N

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1-3

AUX

RELA

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L PNL

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L PA

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FRO

M C

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L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

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LDVP

PS02

TP04

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HP LP

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MP

EKD

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125

FG1

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HQ

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T20

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A

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KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

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2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

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6B6A

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COM

D24

COM

D24

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L+L-

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CH3

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G

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I+V+

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I+V+

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CH4

CH5

CH6

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6C

227

-A -A

-A -A

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126

127

130

112

113

HP LP

OL OP

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VP-B -B

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131

-B

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2-A

KM3

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PY -ASV

1-A

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3-A

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C0Y0

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Y3Y7

Y6Y5

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56

78

ETS

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412

4

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56

78

ETS

2122

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20

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501

502

503

504

505

506

507

508

EKD

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KM2

341 -B

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401

KM2

KM2

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T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

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123

2

KM1

KM3

KM2

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301

230

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122

123

E

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101

102

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103

PU

CH

231

232

230

231

232

230

AIG

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7

T21

305

306

127

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304

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130

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8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

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410

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LC

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131

CH

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411

230

231

232

233

FANS

RUN

SGL

237

234

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KM2

KM3

EC

235

236

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240

241

242

243

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2

244

245

246

247

FANS

RUN

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233

233

233

247 24

7

247

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(ETS

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PLC

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FOR COMPRESSOR BRUNSTOP INDICATION

TO U

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S M

CC

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FOR REMOTERESTART SGL

FRO

M U

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S M

CC

CONT

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TER

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CONT

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NAL

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ING

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STOP

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302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

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L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

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2-C

KM3

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PY -CSV

1-C

SV2

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3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

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Y3Y7

Y6Y5

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SS

X0X1

X2X3

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132

133

114

115

HP LP

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134

135

MP

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136

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COM

-

DVP

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0V24

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G

OUT

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DA

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85

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12

56

78

ETS

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20

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509

510

511

512

D24

136

CH

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412

TO E

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(ETS

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FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

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-C

MP

307

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135

D24

E

-C

AIG

AI9

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AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

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LM

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C

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308

309

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LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

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FSSW

D24

F15

A

EE

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223

220

222

221

PU

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COM

COM

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CHXC20

120

0

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110

111

COM

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OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

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P

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X0X1

X2X3

X4X5

X6X7

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2

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120

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Y1Y2

Y3Y7

Y6Y5

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N

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224

225

226

COM

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1C1B

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4B4A

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227

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122

123

124

112

113

HP LP

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56

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501

502

503

504

505

506

507

508EK

D

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KM2

341 -B

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402

401

403

404

KM2

KM2

406

405

408

407

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T2 T2

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302

303

106

303

302

301

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123

2

KM1

KM3

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MP

301

230

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107

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106

107

E

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101

102

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103

PU

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231

232

230

231

232

230

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T21

305

306

123

R2R2

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KM1

KM3

KM2

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MP

304

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124

D24

E

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GAI

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123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

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TO P

LC

D24

125

CH

AO2

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411

230

231

232

233

FANS

RUN

SGL

237

234

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KM2

KM3

EC

235

236

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240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

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233

233

233

247 24

7

247

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FAN

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E

D24

D24

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(ETS

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(ETS

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FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

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S M

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N TE

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ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

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SW

ITCH

11TE

01EC

HW T

EMPE

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RE S

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RPT

100

12TE

02LC

HW T

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RE S

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100

13TE

03FI

N TE

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R A

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0

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N TE

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RE S

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R A

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0

15TE

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T TEM

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TURE

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16TE

06FI

N TE

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R B

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0

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0

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T TEM

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100

19TE

09FI

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RE S

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R C

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0

20TE

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N TE

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RE SE

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100

21TE

11EX

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T TEM

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TURE

SENS

OR C

PT10

0

22EP

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R

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R

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ENT

TRAN

SDUC

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IGNA

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AUX

RELA

Y (C

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26CH

AUX

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27XC

AUX

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VAL

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25

31SV

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ID V

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TER

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DED

CASE

CIR

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36N

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ISE

FILT

ER

37F1

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38V0

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RIST

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DD

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OD

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ID V

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1 2 43NOTE

SUPP

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S

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MT

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MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

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T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

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T

L+FG

I-L-

L+

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L+L-

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CH2

CH3

CH4

0V

COM

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E

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78 AI

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G

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M

TO E

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ACH

1

COM

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0V24

V

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COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

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AIN

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V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

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X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

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KM1

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2-A

KM3

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PY -ASV

1-A

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3-A

OUT

C0Y0

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Y3Y7

Y6Y5

DVP

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N

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7C7B

7A8C

8B8A

CH1

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D

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CH3

CH4

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G

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COM

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78 AI

6AI

G

IT-B

COM

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AO2

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M

TO E

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COM

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AI4

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TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

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LC

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24VA

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12

56

78

ETS

2122

2425

26+

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412

0

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12

56

78

ETS

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26+

20

-B

501

502

503

504

505

506

507

508EK

D

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KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

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MP

301

230

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107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

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MP

304

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124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

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R2R0

2R2R0

2

R2R0

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PB

EE

E

D24

D24

POW

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PH 2

20VA

C 50

60H

Z

TO E

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(ETS

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TO E

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FRO

M P

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PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

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BODY

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CONT

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PM

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R PR

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PER

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9O

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10O

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ITCH

11TE

01EC

HW TE

MPER

ATUR

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0

12TE

02LC

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PT10

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13TE

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R A

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0

14TE

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0

16TE

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19EP

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TRA

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R SIG

NAL

22KM

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Y (C

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Y (C

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24XC

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25PY

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ID V

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25

28SV

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75

29SV

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ID V

ALVE

50

30HQ

OIL

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TER

31FA

NCO

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NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

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R

33N

FNO

ISE

FILT

ER

34F1

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SE

35V0

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RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

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R M

OD

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-ETS

38EC

ECON

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R SOL

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D VA

LVE

39

PBEM

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RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

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BY U

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LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

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SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

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BODY

Note

1

T

HESE

PART

S AR

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CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Typical Starter Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

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EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

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T RE

LAY

7VP

POW

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ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

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9CT

CURR

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TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

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12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

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LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

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1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

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SGL

FRO

M U

SER

3SW

REM

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STAR

TST

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LFR

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USE

R

4RS

REM

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RESE

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GNAL

FRO

M U

SER

5VP

POW

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ROTE

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ELAY

6M

PM

OTO

R PR

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T RE

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7HP

HIGH

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SSUR

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ITCH

8LP

LOW

PRE

SSUR

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ITCH

9O

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SW

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10O

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PRES

SURE

SW

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11TE

01EC

HW TE

MPE

RATU

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RPT

100

12TE

02LC

HW TE

MPE

RATU

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RPT

100

13TE

03FI

N TE

MPE

RATU

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RPT

100

14TE

04SU

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MPRE

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15TE

05EX

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PREA

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SEN

SOR

PT10

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16EP

EVAP

PRES

SURE

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NSM

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17CP

COND

PRES

SURE

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NSM

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18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

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UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 18

Typical Schematic Diagram-1 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

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24RS

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HP LP

OL OP

MP

EKD

VP

125

FG1

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HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

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CH1

FGI-

L-

DVP

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L+FG

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L+

L+L-

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L+L-

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CH2

CH3

CH4

0V24

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G

CH1

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L+

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L+L-

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CH2

CH3

CH4

0V

COM

D24

E

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-B AI3

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M

TO E

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ACH

1

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CH3

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I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

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126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

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131

-B

KM1

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2-A

KM3

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PY -ASV

1-A

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3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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N

Y4

7C7B

7A8C

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CH1

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AI6

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56

78

ETS

2122

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26+

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412

4

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56

78

ETS

2122

2425

26+

20

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501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

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T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

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123

2

KM1

KM3

KM2

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301

230

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123

D24

122

123

E

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101

102

D24SW

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103

PU

CH

231

232

230

231

232

230

AIG

AI7

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7

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305

306

127

R2R2

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MP

304

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130

D24

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AIG

AI8

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127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

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410

TO P

LC

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131

CH

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411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

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240

241

242

243

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2

244

245

246

247

FANS

RUN

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233

233

233

247 24

7

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FOR COMPRESSOR BRUNSTOP INDICATION

TO U

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CC

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FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

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CONT

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NAL

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STOP

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302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

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CH1

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L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

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2-C

KM3

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PY -CSV

1-C

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3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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SS

X0X1

X2X3

X4X5

X6X7

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132

133

114

115

HP LP

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134

135

MP

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136

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COM

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G

OUT

V0+

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C0

X0X1

X2X3

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DA

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85

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78 AI

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12

56

78

ETS

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26+

20

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509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

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FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

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-C

MP

307

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135

D24

E

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AIG

AI9

AI9

AIG AI

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9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

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LM

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C

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308

309

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LS Air-Cooled Screw Chillers 21

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101

102

100

103

105

106

104

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223

220

222

221

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120

0

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110

111

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224

225

226

COM

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122

123

124

112

113

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501

502

503

504

505

506

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402

401

403

404

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KM2

406

405

408

407

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302

303

106

303

302

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301

230

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106

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231

232

230

231

232

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305

306

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KM3

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123

124

305

306

304

245

244

246

245

244

246

245

244

246

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125

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230

231

232

233

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237

234

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235

236

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240

241

242

243

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244

245

246

247

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233

233

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247 24

7

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FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

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TO U

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ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

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Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 19

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T

CONT

ACTO

R SI

GNAL

COO

LING

FANS

SIG

AL

FRO

M C

ONT

ROL

PANE

LTO

CO

NTRO

L PA

NEL

T2

T2 T2

R2 R2R2

POW

ERCT

RL P

ANEL

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-4

MAG

NETI

C CO

NTAC

TOR

1151

F1-4

THER

MAL

REL

AY

12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM C

ONTR

OL P

NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

OR

M2

M1 NL

L1

MP

L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

ER 1

PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP S

IGNA

LFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW TE

MPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

RPT

100

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SEN

SOR

PT10

0

16EP

EVAP

PRES

SURE

TRA

NSM

ITTER

17CP

COND

PRES

SURE

TRA

NSM

ITTER

18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

Y LIQ

UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

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2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

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134

308

309

R2R2

R2

KM1

KM3

KM2

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307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

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9

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261

262

263

260

261

262

263

260

308

309

307

308

309

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ECTR

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101

102

100

103

121

122

120

123

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F15

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223

220

222

221

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CHXC20

120

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110

111

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224

225

226

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126

127

130

112

113

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502

503

504

505

506

507

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303

122

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231

232

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130

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127

130

305

306

304

245

244

246

245

244

246

245

244

246

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230

231

232

233

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237

234

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235

236

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240

241

242

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245

246

247

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233

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302

303

301

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306

304

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253

250

252

251

254

255

256

257

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260

261

262

263

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132

133

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135

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FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

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FOR COMPRESSOR CRUNSTOP INDICATION

HQ

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342 -C

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308

309

134

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134

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308

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261

260

262

261

260

262

261

260

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100

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306

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245

244

246

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231

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SDUC

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LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

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135

D24

E

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AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

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LM

OTOR

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ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

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NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

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308

309

307

ELEC

TRIC

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WIT

CH

2PU

CHW

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REM

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STAR

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10O

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ITCH

11TE

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100

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100

13TE

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R A

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0

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T TEM

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0

16TE

06FI

N TE

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R B

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0

17TE

07SU

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0

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T TEM

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100

19TE

09FI

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RE S

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R C

PT10

0

20TE

10SU

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N TE

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RE SE

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CPT

100

21TE

11EX

HAUS

T TEM

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TURE

SENS

OR C

PT10

0

22EP

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R

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R

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TRAN

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RELA

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26CH

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27XC

AUX

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25

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75

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50

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CASE

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S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

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HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

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L-

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L+FG

I-L-

L+

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78 AI

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COM

I+V+

COM

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CH4

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CH6

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G

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85

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227

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122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

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KM1

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2-A

KM3

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PY -ASV

1-A

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3-A

OUT

C0Y0

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Y3Y7

Y6Y5

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78 AI

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56

78

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56

78

ETS

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26+

20

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501

502

503

504

505

506

507

508EK

D

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KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

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MP

301

230

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107

D24

106

107

E

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R2

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101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

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MP

304

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124

D24

E

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AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

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240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

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233

233

233

247 24

7

247

FAN

FAN

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R2R0

2R2R0

2

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PB

EE

E

D24

D24

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20VA

C 50

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Z

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(ETS

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TO E

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(ETS

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FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

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NL

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PM

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PER

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8LP

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11TE

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HW TE

MPER

ATUR

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0

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02LC

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SOR

PT10

0

13TE

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TEMP

ERAT

URE S

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R A

PT10

0

14TE

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0

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0

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19EP

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TRA

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R SIG

NAL

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1-3

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Y (C

ONT

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AUX

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Y (C

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24XC

AUX

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Y (F

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)

25PY

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25

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75

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ALVE

50

30HQ

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TER

31FA

NCO

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NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

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T BR

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R

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FNO

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ER

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SE

35V0

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RIST

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36TR

TRAN

SFO

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37EK

DD

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-ETS

38EC

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39

PBEM

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RNCY

STO

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ITCH

1 2 43NOTE

SUPP

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BY U

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LOCA

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ON C

HILL

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ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

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BT0

BS0

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VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

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F1

BV1

BW1

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F2

BU2 FM

2-B

-B51

F2

BV2

BW2

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F3

BU3 FM

3-B

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F3

BV3

BW3

-B88

F4

BU4 FM

4-B

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F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

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MP

301

301

230 23

123

223

323

0

231

232

233

230

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123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

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MP

304

304

244 24

524

624

724

4

245

246

247

244

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130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

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CT-A

AI7

T2

BC2

BC1

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CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

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3

FRO

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ROL

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2

THE

SE PA

RTS

ARE

LOCA

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CHIL

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Note

1

T

HESE

PART

S AR

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CATE

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CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

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EMER

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CYAB

NORM

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CU

RREN

T-A

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RL P

ANEL TO

CO

NTRO

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NEL

CONT

ACTO

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GNAL

-ACO

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NS S

IGAL

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STAR

TER

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CONT

ROL

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BODY

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NORM

AL SG

L-B

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TRAN

SDUC

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LCU

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T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

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F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

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C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Typical Starter Diagram-2 Compressor

VP

107

D24

ZY

X

WV

U

R11

S11

R2PB

106

D24 T2R2

380V TR

R02

T2220V

700V

A

R01

T01

NFB2

10A

S

2M

1M

S2M

164 2M

161

158

1MS

S0T0

R0

T1S1

R160

0VNF

B1

301

302

303

88 F4 F4

88

U42V

42F3

V41

U41

W42

W41 51

FM4

U31

V31

U32V

32

F188

V21

V22

F1

W11 51

W12

U22

U21

F2W

22

W21 51F288

FM3

FM2

V11

U11

V12

U12 FM

1

W32

W31 51F3

KM1

KM2

KM3

231

230

C2C1R2 G

ITCT

AI3

T2

232

88F1

88F2

88F3

F151F251

F351

R2 T2

171

172

173

233

88F4F451

174

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

R02

R02

R02

R2 R2

303

302

301

R223

123

2

KM1

KM3

KM2

230

233

MP

VP

106

107

D24

106

107

D24

E

R2

GAI

3

GAI

3

GAI

3

R2R2

301

301

302

302

303

303

230

230

231

231

232

232

233

233

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

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OP

SGL

EMER

GERN

CYAB

NORM

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MOT

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POW

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ANSD

UCER

SGL

CU

RREN

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CONT

ACTO

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GNAL

COO

LING

FANS

SIG

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FRO

M C

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ROL

PANE

LTO

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NTRO

L PA

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T2

T2 T2

R2 R2R2

POW

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RL P

ANEL

3

FRO

MT

O C

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ROL

PANE

L

2

THE

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RTS

ARE

LOCA

TED

ON

CHIL

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BODY

Note

1

T

HESE

PART

S AR

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CATE

D IN

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NTRO

L PA

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ELEC

TRIC

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11M

2M

SM

AGNE

TIC

CONT

ACTO

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2NF

B1M

OLDE

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SED

CIR

CUIT

BRE

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3NF

B2NO

FUS

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R

4TR

TRAN

SFO

RMER

700V

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5PB

EMER

GERN

CY S

TOP

SWIT

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6M

PM

OTO

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T RE

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POW

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CTO

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RANS

DUC

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CURR

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TRAN

SFO

RMER

1088

F1-4

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1151

F1-4

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MAL

REL

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12FM

1-4

COO

LING

FAN

13FA

NCO

OLI

NG FA

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14KM

1-3

AUX

RELA

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TFR

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NL

T11

11 1412L2 L3L1

1 4325 6

CO

MP

MOT

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M2

M1 NL

L1

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L3L2

FAN

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

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R22

223

220

222

221

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COM

COM

COM

D24

CHXC

201

200

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

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LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

POW

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PH 2

20VA

C 50

60H

Z

2

3 4

V3V1

V2V0

NF

T21

R21

EE

E

402

401

403

404

KM2

XC406

405

D24

101

102

D24SW

RS

D24

103

PU

CH

T2

T2 T2

R2 R2

106

MP107

D24

106

107

D24

R2

GAI

3

AI3

G

GAI

3VP

E

1 2 43

ELEC

TRIC

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1FS

FLO

W S

WIT

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2PU

CHW

PUM

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SGL

FRO

M U

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3SW

REM

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STAR

TST

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LFR

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USE

R

4RS

REM

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RESE

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GNAL

FRO

M U

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5VP

POW

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ROTE

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ELAY

6M

PM

OTO

R PR

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7HP

HIGH

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SSUR

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8LP

LOW

PRE

SSUR

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9O

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SW

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10O

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PRES

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SW

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11TE

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HW TE

MPE

RATU

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RPT

100

12TE

02LC

HW TE

MPE

RATU

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RPT

100

13TE

03FI

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MPE

RATU

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RPT

100

14TE

04SU

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MPRE

ATUR

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SOR

PT10

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15TE

05EX

HAUS

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PREA

TURE

SEN

SOR

PT10

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16EP

EVAP

PRES

SURE

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NSM

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17CP

COND

PRES

SURE

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NSM

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18IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

19KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

20CH

AUX

RELA

Y (C

HW P

UMP)

21XC

AUX

RELA

Y (F

AULT

)

22PY

SPRA

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UID

SOLE

NOID

VAL

VE

23ET

SE L

ECTR

ONIC

EXPA

NSIO

N

VALV

E

24SV

1SO

LENO

ID V

ALVE

25

25SV

2SO

LENO

ID V

ALVE

75

26SV

3SO

LENO

ID V

ALVE

50

27HQ

OIL

HEA

TER

28FA

NCO

OLI

NG FA

NS

29M

CCB

MOL

DED

CASE

CIRC

UIT

BREA

KER

30N

FNO

ISE

FILT

ER

31F1

-2FU

SE

32V0

-3VA

RIST

ER

33TR

TRAN

SFO

RMER

34EK

DD

RIVE

R M

OD

ULE

-ETS

35EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

36

PBEM

ERGE

RNCY

STO

P SW

ITCH

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24 E

+-EP AI

1

+-CP AI

2

78 AI

3G

IT

AO1

ACO

M

TO E

KD

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

302

303 30

330

230

1

R2R2

R2

KM1

KM3

KM2

231

232

23023

123

223

0

231

232

230

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

KM1

KM2

KM3

ECPY

SV1

SV3

SV2

AC22

024

VTR

R23

T23

R21

T21

F21

A R33

20VA

TO E

LEC

EXPV

ALVE

(ETS

)

501

502

503

504

302

303

301

301

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

FRO

M P

LC

D24

120

CH

AO1

ACOM

410

TO P

LC

TE03

TE04

230

231

232

233

233

233

233

EE

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR RUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

POW

ERCT

RL P

ANEL

ABNO

RMAL

SGL

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GLCU

RREN

T

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SI

GNAL

COO

LING

FANS

RUN

STO

P

TO S

TART

ER PA

NEL

FANS

RUN

SGL

NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

R2R0

2R2R0

2

R2R0

2

PB

STO

P SG

LEM

ERGE

RNCY

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

600V

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

106

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

123

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2 326

325

51F5

51F6

-A-A

88F

6-A

88F

1-B

329

327

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

107

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

600V

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

124

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

106

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

107

D24

106

107

D24

E

R2R0

2

R02

R02

R2 R2

R2AI

G

AIG

AIG

AI5

AI5AI

5

305

306

123

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

124

D24

123

124

D24

E

AIG

AIG

AIG

AI6

AI6AI

6

AC2

AC1

R2 G

IT-A

CT-A

AI5

T2

BC2

BC1

R2 G

IT-B

CT-B

AI6

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING

STO

P SG

LEM

ERGE

RNCY

ABNO

RMAL

SGL

-AM

OTO

RampPO

WER

TRAN

SDUC

ER S

GL

CURR

ENT-

APO

WER

CTRL

PAN

EL TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

FRO

M C

ONT

ROL

PANE

L

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL S

GL-B

MOT

ORamp

POW

ER TRAN

SDUC

ER S

GL

CURR

ENT-

B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-BCO

OLI

NG FA

NS S

IGAL

-B

FRO

M C

ONT

ROL

PANE

L

ELEC

TRIC

AL PA

RT L

IST

11M

2M

SM

AGNE

TIC

CONT

ACTO

R

2NF

B1M

OLDE

D CA

SED

CIR

CUIT

BRE

AKER

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

700V

A

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-6

MAG

NETI

C CO

NTAC

TOR

1151

F1-6

THER

MAL

REL

AY

12FM

1-6

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4

-A

88F

4-A

328

51F2 -B

88F

2-B

51F4 -B

88F

4-B

330

331

332

LS Air-Cooled Screw Chillers 20

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

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L-

DVP

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T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

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CH2

CH3

CH4

0V24

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G

CH1

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L-

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T

L+FG

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L+L-

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CH2

CH3

CH4

0V

COM

D24

E

+-EP

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+-CP

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78 AI

5AI

G

IT-A

AO1

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M

TO E

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DVP

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ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

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AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

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PY -ASV

1-A

SV2

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3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

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CH3

CH4

0V24

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G

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COM

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78 AI

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IT-B

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TO E

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TE03

TE04

TE07

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T23

R21

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A R33

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-

12

56

78

ETS

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26+

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412

0

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-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

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301

230

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107

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106

107

E

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101

102

D24SW

RS

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103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

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MP

304

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124

D24

E

-B

AIG

AI6

AI6

AIG AI

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6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

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237

234

KM1

KM2

KM3

EC

235

236

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-B-B

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240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

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-B-B

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233

233

233

247 24

7

247

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FAN

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C 50

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TO E

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(ETS

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TO E

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(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

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T-A

FRO

M S

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NEL

CONT

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R SIG

NAL

COOL

ING

FANS

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STOP

TO S

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NEL

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RMAL

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LMO

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SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

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R SIG

NAL

COOL

ING

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RUN

STOP

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TRIC

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CH

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FROM

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R

FROM

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R

FROM

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PM

OTO

R PR

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LAY

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HIGH

PER

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LOW

PRE

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9O

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ATUR

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0

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0

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0

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0

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0

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0

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TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

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COND

PRES

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TRA

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TTER

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ENT T

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R SIG

NAL

22KM

1-3

AUX

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Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

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Y (F

AULT

)

25PY

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Y LIQ

UID

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ECTR

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25

28SV

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75

29SV

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50

30HQ

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TER

31FA

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NS

32M

CCB

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ED CA

SE CI

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T BR

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R

33N

FNO

ISE

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ER

34F1

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SE

35V0

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ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

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-ETS

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OMIZE

R SOL

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D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

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BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

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F1

BU1 FM

1-B

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F1

BV1

BW1

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F2

BU2 FM

2-B

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F2

BV2

BW2

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F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

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123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

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T2

BC2

BC1

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CT-B

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T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

20VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOTO

RampPO

WER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

REMO

TE ST

ART

STOP

SIGN

AL

4RS

REM

OTE

RESE

T SI

GNAL

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

POI

L DIFF

PRE

SSUR

E SW

ITCH

11TE

01EC

HW TE

MPER

ATUR

E SE

NSOR

PT10

0

12TE

02LC

HW TE

MPER

ATUR

E SEN

SOR

PT10

0

13TE

03FIN

TEMP

ERAT

URE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FIN

TEMP

ERAT

URE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPRE

ATUR

E SEN

SOR B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

SPRA

Y LIQ

UID

SOLE

NOID

VALV

E

26ET

SEL

ECTR

ONIC

EXPA

NSIO

N

VALV

E

27SV

1SO

LENO

ID V

ALVE

25

28SV

2SO

LENO

ID V

ALVE

75

29SV

3SO

LENO

ID V

ALVE

50

30HQ

OIL

HEA

TER

31FA

NCO

OLI

NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Typical Schematic Diagram-2 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

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24V

G

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L-

DVP

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T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

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T

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CH3

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0V

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E

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78 AI

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G

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ACH

1

COM

I+V+

0V24

V

GCO

MI+

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COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

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COM

6C

-

DVP

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AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

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85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

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122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

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125

-B

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2-A

KM3

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PY -ASV

1-A

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3-A

OUT

C0Y0

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Y3Y7

Y6Y5

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N

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7C7B

7A8C

8B8A

CH1

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CH3

CH4

0V24

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G

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MI+

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COM

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78 AI

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IT-B

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TO E

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TE03

TE04

TE07

TE08

AC22

024

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R21

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A R33

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12

56

78

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412

0

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-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

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402

401

403

404

KM2

KM2

406

405

408

407

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T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

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301

230

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107

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106

107

E

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101

102

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RS

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103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

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5

T21

305

306

123

R2R2

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KM3

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304

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124

D24

E

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AIG

AI6

AI6

AIG AI

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6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

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410

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LC

D24

125

CH

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411

230

231

232

233

FANS

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237

234

KM1

KM2

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EC

235

236

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240

241

242

243

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1SV

3SV

2

244

245

246

247

FANS

RUN

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-B-B

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233

233

233

247 24

7

247

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(ETS

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FRO

M P

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PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

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T-A

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M S

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CONT

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R

FROM

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0

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0

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SEN

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0

19EP

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PRES

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R SIG

NAL

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1-3

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Y (C

ONT

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R)

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AUX

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Y (C

HW P

UMP)

24XC

AUX

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75

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TER

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32M

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35V0

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36TR

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SFO

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37EK

DD

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R M

OD

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-ETS

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39

PBEM

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P SW

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1 2 43NOTE

SUPP

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BY U

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TED

ON C

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ODY

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TO

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TER

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L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

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-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

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M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

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2M-B

1M-B

BT1

BS1

BR1

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BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

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F3

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AW3

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F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

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F1

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F1

BV1

BW1

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F2

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F2

BV2

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F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

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F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

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123

D24

122

123

D24

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R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

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CT-A

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3PH

380V

AC 5

060

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MAI

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ONT

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3

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O C

ONT

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2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

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Note

1

T

HESE

PART

S AR

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CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

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OP

SGL

EMER

GERN

CYAB

NORM

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MOT

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POW

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ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

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OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

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3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

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FRO

M U

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5VP

POW

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ELAY

6M

PM

OTO

R PR

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T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

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E SW

ITCH

9O

LO

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SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

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RPT

100

12TE

02LC

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RE S

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RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

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R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

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R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

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PRE

SSUR

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NSM

ITTE

R

23CP

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PRE

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R

24IT

CURR

ENT

TRAN

SDUC

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IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

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26CH

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27XC

AUX

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)

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30SV

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25

31SV

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75

32SV

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50

33HQ

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TER

34FA

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35M

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CASE

CIR

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BRE

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36N

FNO

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FILT

ER

37F1

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38V0

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39TR

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RMER

40EK

DD

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R M

OD

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ECO

NOM

IZER

SO

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ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

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NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 21

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

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24RS

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HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

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L-

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CH3

CH4

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CH4

0V

COM

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78 AI

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1

COM

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V

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COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

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AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

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122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

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3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

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D

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0V24

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COM

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78 AI

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G

IT-B

COM

D24

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AI4

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TE04

TE07

TE08

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12

56

78

ETS

2122

2425

26+

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412

0

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-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

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R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

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ELAB

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SGL

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TRAN

SDUC

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LCU

RREN

T-A

FRO

M S

TART

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NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

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LMO

TORamp

POW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

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ING

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STOP

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ELEC

TRIC

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RT L

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CH

2PU

CHW

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FROM

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R

FROM

USE

R

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R

3SW

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PM

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LAY

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PER

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8LP

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14TE

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PT10

0

16TE

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ERAT

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PT10

0

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0

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0

19EP

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TRA

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NAL

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24XC

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)

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E

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ECTR

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27SV

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ID V

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25

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75

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ALVE

50

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TER

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SE CI

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35V0

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-ETS

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LOCA

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ODY

FROM

TO

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TER

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L

FROM

TO

USER

S M

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302

303

301

305

306

304

11 1412L2 L3L1

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AU

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PB

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380VTR

R02

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220V

R01

T01

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10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

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301

302

303

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F1

AU1 FM

1

KM1

KM2

KM3

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S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

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88F

7-A

88F

1-B

331

329

51F1

51F3

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88F

3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

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B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

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F1

AV1

AW1

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F2

AU2 FM

2-A

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F2

AV2

AW2

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F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

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F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

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L-

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T

L+FG

I-L-

L+

L+L-

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L+L-

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CH3

CH4

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G

CH1

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78 AI

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1

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0V24

V

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COM

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CH3

COM

I+V+

COM

I+V+

COM

I+V+

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CH5

CH6

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-

DVP

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V

G

OUT

SS C0

X0X1

X2X3

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85

+

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X6X7

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Y2Y3

227

-A -A

-A -A

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122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

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125

-B

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2-A

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PY -ASV

1-A

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3-A

OUT

C0Y0

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Y3Y7

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N

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7C7B

7A8C

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CH1

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CH4

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G

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MI+

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78 AI

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IT-B

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TO E

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TE03

TE04

TE07

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R21

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A R33

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56

78

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412

0

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-

12

56

78

ETS

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2425

26+

20

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501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

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402

401

403

404

KM2

KM2

406

405

408

407

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T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

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123

2

KM1

KM3

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301

230

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107

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106

107

E

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101

102

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103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

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5

T21

305

306

123

R2R2

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KM3

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124

D24

E

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AIG

AI6

AI6

AIG AI

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123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

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410

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LC

D24

125

CH

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411

230

231

232

233

FANS

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237

234

KM1

KM2

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EC

235

236

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240

241

242

243

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1SV

3SV

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244

245

246

247

FANS

RUN

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-B-B

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233

233

233

247 24

7

247

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FRO

M P

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PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

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NL

STAR

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T-A

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CONT

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FROM

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0

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0

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0

19EP

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PRES

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R SIG

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1-3

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ONT

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R)

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AUX

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Y (C

HW P

UMP)

24XC

AUX

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75

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TER

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32M

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35V0

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36TR

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37EK

DD

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-ETS

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39

PBEM

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P SW

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1 2 43NOTE

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BY U

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ON C

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ODY

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TO

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TER

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FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

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AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

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10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

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-A

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S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

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-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

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MP-

B

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FAN

88F

1-A

230

323

321

51F1

51F3

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88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

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88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

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D24

123

ABZ

BYBX

BWBV

BU

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2M-B

1M-B

BT1

BS1

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BT0

BS0

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VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

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F3

AV3

AW3

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F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

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F1

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F1

BV1

BW1

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F2

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F2

BV2

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F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

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F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

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123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

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AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

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CT-A

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380V

AC 5

060

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MAI

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ONT

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3

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O C

ONT

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2

THE

SE PA

RTS

ARE

LOCA

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ON

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LER

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Note

1

T

HESE

PART

S AR

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CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

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OP

SGL

EMER

GERN

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NORM

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MOT

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POW

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SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Typical Starter Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

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D24

CHXC20

120

0

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110

111

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OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

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P

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X0X1

X2X3

X4X5

X6X7

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PS02

TP04

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G0

24RS

-485

HP LP

OL

OP

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FG1

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NF

R21

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120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

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3C3B

3A4C

4B4A

5C5B

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227

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122

123

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112

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VP-B -B

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501

502

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505

506

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403

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406

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408

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T2

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101

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245

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230

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232

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FANS

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237

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235

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240

241

242

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PYSV

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SFO

RMER

37EK

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RIVE

R M

OD

ULE

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38EC

ECON

OMIZE

R SOL

ENOI

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LVE

39

PBEM

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1 2 43NOTE

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SERS

LOCA

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ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 22

Typical Schematic Diagram-3 Compressor

101

102

100

103

105

106

104

107

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0

RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL

OP

MP

EKD

VP

121

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

120

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-A AI1

+-CP

-A AI2

78 AI

5AI

G

IT-A

AO1

ACO

M

TO E

XD-A

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

-

DVP

-12S

AIN

0V24

V

G

OUT

SS C0

X0X1

X2X3

Y0C1

RS-4

85

+

X4X5

X6X7

Y1C2

Y2Y3

227

-A -A

-A -A

-A-A

-A

122

123

124

112

113

HP LP

OL

OP

MP

VP-B -B

-B -B

-B-B

125

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

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D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

6AI

G

IT-B

COM

D24

AO2

ACO

M

TO E

XD-B

D24

COM

AI3

AI4

+- EP

-B+

- CP-B

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

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24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

0

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508EK

D

-AHQ

KM2

341 -B

-A-B

402

401

403

404

KM2

KM2

406

405

408

407

-A-B

T2

T2 T2

R2 R2

302

303

106

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

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107

D24

106

107

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

XCCH

231

232

230

231

232

230

AIG

AI5

AI5

AIG AI

GAI

5

T21

305

306

123

R2R2

R2

KM1

KM3

KM2

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-B

MP

304

-BVP -B

124

D24

E

-B

AIG

AI6

AI6

AIG AI

GAI

6

123

124

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

125

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

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-3

R2R0

2R2R0

2

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PB

EE

E

D24

D24

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PH 2

20VA

C 50

60H

Z

TO E

LEC

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(ETS

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TO E

LEC

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ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

FOR FAULTINDICATIONFOR FAULTINDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL P

NL

STAR

TER P

NL

BODY

WIR

ING

STOP

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NORM

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TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

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LMO

TORamp

POW

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ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

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ELEC

TRIC

AL PA

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IST

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CH

2PU

CHW

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P IN

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OCK

SGL

FROM

USE

R

FROM

USE

R

FROM

USE

R

3SW

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TE ST

ART

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OTE

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GNAL

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POW

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6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

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ITCH

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LOW

PRE

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9O

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ITCH

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01EC

HW TE

MPER

ATUR

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0

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HW TE

MPER

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0

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0

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0

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OR A

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0

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R B

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0

17TE

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0

18TE

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T TEM

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TURE

SEN

SOR B

PT10

0

19EP

EVAP

PRES

SURE

TRA

NSMI

TTER

20CP

COND

PRES

SURE

TRA

NSMI

TTER

21IT

CURR

ENT T

RANS

DUCE

R SIG

NAL

22KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

23CH

AUX

RELA

Y (C

HW P

UMP)

24XC

AUX

RELA

Y (F

AULT

)

25PY

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Y LIQ

UID

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E

26ET

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ECTR

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N

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27SV

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LENO

ID V

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25

28SV

2SO

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ID V

ALVE

75

29SV

3SO

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ID V

ALVE

50

30HQ

OIL

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TER

31FA

NCO

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NG FA

NS

32M

CCB

MOLD

ED CA

SE CI

RCUI

T BR

EAKE

R

33N

FNO

ISE

FILT

ER

34F1

-2FU

SE

35V0

-3VA

RIST

ER

36TR

TRAN

SFO

RMER

37EK

DD

RIVE

R M

OD

ULE

-ETS

38EC

ECON

OMIZE

R SOL

ENOI

D VA

LVE

39

PBEM

ERGE

RNCY

STO

P SW

ITCH

1 2 43NOTE

SUPP

LIED

BY U

SERS

LOCA

TED

ON C

HILL

ER B

ODY

FROM

TO

STAR

TER

PANE

L

FROM

TO

USER

S M

CC

302

303

301

305

306

304

11 1412L2 L3L1

VP-A

AZAY

AX

AWAV

AU

R2

PB

R2 T2

380VTR

R02

T2

220V

R01

T01

NFB2

10A

S-A

2M-A

1M-A

S-A

2M-A

161 2M

158

1MS

AT1

AS1

AR1

NFB1

-A

301

302

303

-A88

F1

AU1 FM

1

KM1

KM2

KM3

-A

-A-A

-A

-A-A

-A

S-B

2M-B

171 2M

168

1MS

304

305

306

KM1

KM2

KM3

-B-B

-B

-B-B

-B

AU AV AW

122

D24 T2R2

M2

M1 NL

L1

MP-

A

L3L2

BU BV BW

127

D24 T2R2

M2

M1 NL

L1

MP-

B

L3L2

FAN

88F

1-A

230

323

321

51F1

51F3

-A-A

88F

3-A

88F

5-A23

2

327

325

51F5

51F7

-A-A

88F

7-A

88F

1-B

331

329

51F1

51F3

-B-B

88F

3-B

88F

5-B

51F5

51F6

-B-B

88F

6-B

231

233

244

246

245

247

T2

AT0

AS0

AR0

D24

123

ABZ

BYBX

BWBV

BU

S-B

2M-B

1M-B

BT1

BS1

BR1

NFB1

-B

B

BT0

BS0

BR0

VP-B

D24

130

11 1412L2 L3L1

-A51

F1

AV1

AW1

-A88

F2

AU2 FM

2-A

-A51

F2

AV2

AW2

-A88

F3

AU3 FM

3-A

-A51

F3

AV3

AW3

-A88

F4

AU4 FM

4-A

-A51

F4

AV4

AW4

CO

MP

MOT

OR

-B88

F1

BU1 FM

1-B

-B51

F1

BV1

BW1

-B88

F2

BU2 FM

2-B

-B51

F2

BV2

BW2

-B88

F3

BU3 FM

3-B

-B51

F3

BV3

BW3

-B88

F4

BU4 FM

4-B

-B51

F4

BV4

BW4

CO

MP

MOT

OR

T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

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CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

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102

100

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11 1412L2 L3L1

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AU4 FM

4-A

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1-B

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BV1

BW1

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2-B

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BV2

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BU3 FM

3-B

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BV3

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BU4 FM

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BV4

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MP

MOT

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T2

T2 T2

R2 R2

302

303

122

302

30330

330

230

1

R2R2

R223

123

2

KM1

KM3

KM2

233

-A-A

-A

MP

301

301

230 23

123

223

323

0

231

232

233

230

-A-AVP

123

D24

122

123

D24

E

R2R0

2

R02

R02

R2 R2R2AI

G

AIG

AI7

AI7AI

7

305

306

127

305

30630

630

530

4

R2R2

R224

524

6

KM1

KM3

KM2

247

-B-B

-B

MP

304

304

244 24

524

624

724

4

245

246

247

244

-B-BVP

130

D24

127

130

D24

E

AIG

AIG

AIG

AI8

AI8AI

8

AC2

AC1

R2 AIG

IT-A

CT-A

AI7

T2

BC2

BC1

R2 AIG

IT-B

CT-B

AI8

T2

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

3PH

380V

AC 5

060

HZ

MAI

N PO

WER

SUP

PLY

TO C

ONT

ROL

PANE

L

3

FRO

MT

O C

ONT

ROL

PANE

L

2

THE

SE PA

RTS

ARE

LOCA

TED

ON

CHIL

LER

BODY

Note

1

T

HESE

PART

S AR

E LO

CATE

D IN

CO

NTRO

L PA

NEL

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING ST

OP

SGL

EMER

GERN

CYAB

NORM

AL S

GL-A

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-A

POW

ERCT

RL P

ANEL TO

CO

NTRO

L PA

NEL

CONT

ACTO

R SI

GNAL

-ACO

OLI

NG FA

NS S

IGAL

-A

STAR

TER

PNL

CONT

ROL

PNL

BODY

WIR

ING AB

NORM

AL SG

L-B

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-B

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SIG

NAL-

BCO

OLIN

G FA

NS SI

GAL-

B

1 4325 6

1 4325 6

-A88

F5

AU5 FM

5-A

-A51

F5

AV5

AW5

-A88

F6

AU6 FM

6-A

-A51

F6

AV6

AW6

-B88

F5

BU5 FM

5-B

-B51

F5

BV5

BW5

-B88

F6

BU6 FM

6-B

-B51

F6

BV6

BW6

88F

2-A

322

51F2 -A

324

51F4 -A

88F

4-A

330

51F2 -B

88F

2-B

51F4 -B

88F

4-B

332

333

334

-A88

F7

AU7 FM

7-A

-A51

F7

AV7

AW7

-A88

F8

AU8 FM

8-A

-A51

F8

AW8

AV8

326

51F6 -A

88F

6-A

328

51F8 -A

88F

8-A

S-C

2M-C

181 2M

178

1MS

307

308

309

KM1

KM2

KM3

-C-C

-C

-C-C

-C

88F

1-C

337

335

51F1

51F3

-C-C

88F

3-C

88F

5-C

51F5

51F6

-C-C

88F

6-C

260

262

261

263

336

51F2 -C

88F

2-C

51F4 -C

88F

4-C

338

339

340

CU CV CW

134

D24 T2R2

M2

M1 NL

L1

MP-

C

L3L2

CZCY

CX

CWCV

CU

S-C

2M-C

1M-C

CT1

CS1

CR1

NFB1

-C

C

BT0

BS0

BR0

VP-C

D24

135

11 1412L2 L3L1

-C88

F1

CU1 FM

1-C

-C51

F1

CV1

CW1

-C88

F2

CU2 FM

2-C

-C51

F2

CV2

CW2

-C88

F3

CU3 FM

3-C

-C51

F3

CV3

CW3

-C88

F4

CU4 FM

4-C

-C51

F4

CV4

CW4

CO

MP

MOT

OR

134

308

309

R2R2

R2

KM1

KM3

KM2

-C-C

-C

MP

307

261

262

263

260

-C-CVP

135

D24

134

135

D24

E

AIG3

AIG3

AIG3

AI9

AI9AI

9

CC2

CC1

R2 AIG

IT-C

CT-C

AI9

T2

3PH

380V

AC 5

060

HZM

AIN

POW

ER S

UPPL

YST

ARTE

R PN

L

CONT

ROL

PNL

BODY

WIR

ING AC

NORM

AL S

GL-C

MOT

ORamp

POW

ERTR

ANSD

UCER

SGL

CU

RREN

T-C

TO C

ONT

ROL

PANE

L

CONT

ACTO

R SI

GNAL

-CCO

OLI

NG FA

NS S

IGAL

-C

1 4325 6

-C88

F5

CU5 FM

5-C

-C51

F5

CV5

CW5

-C88

F6

CU6 FM

6-C

-C51

F6

CV6

CW6

261

262

263

260

261

262

263

260

308

309

307

308

309

307 EL

ECTR

ICAL

PART

LIS

T1

1M2

MS

MAG

NETI

C CO

NTAC

TOR

2NF

B1MO

LDED

CASE

D CI

RCUI

T BR

EAKE

R

3NF

B2NO

FUS

E BR

EAKE

R

4TR

TRAN

SFO

RMER

1000

VA

5PB

EMER

GERN

CY S

TOP

SWIT

CH

6M

PM

OTO

R PR

OTEC

T RE

LAY

7VP

POW

ER P

ROTE

CTO

R

8IT

AMPE

RE T

RANS

DUC

ER

9CT

CURR

ENT

TRAN

SFO

RMER

1088

F1-8

MAG

NETI

C CO

NTAC

TOR

1151

F1-8

THER

MAL

REL

AY

12FM

1-8

COO

LING

FAN

13FA

NCO

OLI

NG FA

N

14KM

1-3

AUX

RELA

Y CO

NTAC

TFR

OM CO

NTRO

L PNL

AIG

FRO

M C

ONT

ROL

PANE

LFR

OM

CO

NTRO

L PA

NEL

FRO

M C

ONT

ROL

PANE

L

101

102

100

103

121

122

120

123

COM

R21

T21

FSSW

D24

F15

A

EE

R22

223

220

222

221

PU

COM

COM

COM

D24

CHXC20

120

0RS

110

111

COM

D24

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

24V

0V GN

LDVP

PS02

TP04

-+

G0

24RS

-485

HP LP

OL OP

MP

EKD

VP

125

FG1

T2R2

HQ

R20

T20

MCC

B10

A

FAN

KM2

340

2

3 4

V3V1

V2V0

NF

R21

EE

E

124

224

225

226

COM

D24

1C1B

1A

TE01

2C2B

2A

TE02

3C3B

3A4C

4B4A

5C5B

5A

TE05

6B6A

TE06

COM

D24

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V24

V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

COM

D24

E

+-EP

-B AI3

+-CP

-B AI4

AO2

ACO

M

TO E

XD-B

DVP

-06X

ACH

1

COM

I+V+

0V24

V

GCO

MI+

V+

CH2

COM

I+V+

CH3

COM

I+V+

COM

I+V+

COM

I+V+

CH4

CH5

CH6

D24

COM

6C

227

-A -A

-A -A

-A-A

-A

126

127

130

112

113

HP LP

OL OP

MP

VP-B -B

-B -B

-B-B

131

-B

KM1

-AKM

2-A

KM3

-AEC -A

PY -ASV

1-A

SV2

-ASV

3-A

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

7C7B

7A8C

8B8A

CH1

FGCO

MI+

DVP

-04A

D

V+

CH2

CH3

CH4

0V24

V

G

FGCO

MI+

V+

FGCO

MI+

V+FG

COM

I+V+

78 AI

9AI

G

IT-C

COM

D24

AO3

ACO

M

TO E

XD-C

D24

COM

AI5

AI6

+- EP

-C+

- CP-C

TE03

TE04

TE07

TE08

AC22

024

VTR

R23

T23

R21

T21

F22

A R33

FRO

M P

LC

30VA

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20D2

412

4

-AEK

D24

VAC

-

12

56

78

ETS

2122

2425

26+

20

-B

501

502

503

504

505

506

507

508

EKD

-AHQ

KM2

341 -B

-A-B

401

KM2

KM2

-A-B

T2

T2 T2

R2 R2

302

303

122

303

302

301

R2R2

R223

123

2

KM1

KM3

KM2

-A-A-A

-A

MP

301

230

-AVP -A

123

D24

122

123

E

-A

R2

D24

101

102

D24SW

RS

D24

103

PU

CH

231

232

230

231

232

230

AIG

AI7

AI7

AIG AI

GAI

7

T21

305

306

127

R2R2

R2

KM1

KM3

KM2

-B-B-B

-B

MP

304

-BVP -B

130

D24

E

-B

AIG

AI8

AI8

AIG AI

GAI

8

127

130

305

306

304

245

244

246

245

244

246

245

244

246

CH

AO1

ACOM

410

TO P

LC

D24

131

CH

AO2

ACOM

411

230

231

232

233

FANS

RUN

SGL

237

234

KM1

KM2

KM3

EC

235

236

-B-B

-B-B

-A

240

241

242

243

PYSV

1SV

3SV

2

244

245

246

247

FANS

RUN

SGL

-B-B

-B-B

-B

233

233

233

247 24

7

247

FAN

FAN

-1-2

-3

R2R0

2R2R0

2

R2R0

2

PB

EE

E

D24

D24

POW

ER 1

PH 2

20VA

C 50

60H

Z

TO E

LEC

EXPV

ALVE

(ETS

-A)

TO E

LEC

EXPV

ALVE

(ETS

-B)

FRO

M P

LCTO

PLC

FOR CHW PUMPSTARTSTOP SGL

FOR COMPRESSOR A RUNSTOP INDICATION

FOR COMPRESSOR BRUNSTOP INDICATION

TO U

SER

S M

CC

FOR CHW PUMPINTERLOCK

FOR REMOTE STARTSTOP SGL

FOR REMOTERESTART SGL

FRO

M U

SER

S M

CC

CONT

ROL

PNL

STAR

TER

PNL

BODY

WIR

ING

STOP

SGL

EMER

GERN

CYPO

WER

CTRL

PAN

ELAB

NORM

AL-A

SGL

MOT

ORampP

OWER

TRAN

SDUC

ER SG

LCU

RREN

T-A

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

ABNO

RMAL

-B SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-B

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

302

303

301

305

306

304

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-08S

N

Y4

9C9B

9A

TE09

10B

10ATE

10

COM

D24

24V

G

CH1

FGI-

L-

DVP

-04P

T

L+FG

I-L-

L+

L+L-

I-FG

L+L-

I-FG

CH2

CH3

CH4

0V

10C

11C

11B

11A TE

11

E

253

250

252

251

254

255

256

257

KM1

-CKM

2-C

KM3

-CEC -C

PY -CSV

1-C

SV2

-CSV

3-C

260

261

262

263

FANS

RUN

SGL

-C

OUT

C0Y0

Y1Y2

Y3Y7

Y6Y5

DVP

-16S

P

Y4

SS

X0X1

X2X3

X4X5

X6X7

IN

132

133

114

115

HP LP

OL OP

-C -C

-C -C

134

135

MP

VP-C

-C

136

-CEKD

COM

-

DVP

-10S

XIN

0V24

V

G

OUT

V0+

I0+

V1+

I1+

C0

X0X1

X2X3

SS

Y0Y1

COM

V0+

I0+

V1+

I1+

DA

AD

RS-4

85

+

+-EP

-A AI1

+-CP

-A AI2

AO1

ACO

M

TO E

XD-A

78 AI

8AI

G

IT-B

78 AI

7AI

G

IT-A

EKD

24VA

C

-

12

56

78

ETS

2122

2425

26+

20

-C

509

510

511

512

D24

136

CH

AO3

ACOM

412

TO E

LEC

EXPV

ALVE

(ETS

-C)

FRO

M P

LCTO

PLC

XC

FOR FAULTINDICATIONFOR FAULTINDICATION

402

403

404

405

406

407

408

409

410

KM2

-C

FOR COMPRESSOR CRUNSTOP INDICATION

HQ

KM2

342 -C

-C

308

309

134

R2R2

R2

KM1

KM3

KM2

-C-C-C

-C

MP

307

-CVP -C

135

D24

E

-C

AIG

AI9

AI9

AIG AI

GAI

9

134

135

308

309

307

261

260

262

261

260

262

261

260

262

263 26

3

263

D24

ABNO

RMAL

-C SG

LM

OTOR

ampPOW

ERTR

ANSD

UCER

SGL

CURR

ENT-

C

FRO

M S

TART

ER PA

NEL

CONT

ACTO

R SIG

NAL

COOL

ING

FANS

RUN

STOP

TO S

TART

ER PA

NEL

308

309

307

ELEC

TRIC

AL PA

RT L

IST

1FS

FLO

W S

WIT

CH

2PU

CHW

PUM

P IN

TERL

OCK

SGL

FRO

M U

SER

3SW

REM

OTE

STAR

TST

OP

SIGN

ALFR

OM

USE

R

4RS

REM

OTE

RESE

T SI

GNAL

FRO

M U

SER

5VP

POW

ER P

ROTE

CT R

ELAY

6M

PM

OTO

R PR

OTEC

T RE

LAY

7HP

HIGH

PER

SSUR

E SW

ITCH

8LP

LOW

PRE

SSUR

E SW

ITCH

9O

LO

IL L

EVEL

SW

ITCH

10O

PO

IL D

IFF

PRES

SURE

SW

ITCH

11TE

01EC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

12TE

02LC

HW T

EMPE

RATU

RE S

ENSO

RPT

100

13TE

03FI

N TE

MPE

RATU

RE S

ENSO

R A

PT10

0

14TE

04SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R A

PT10

0

15TE

05EX

HAUS

T TEM

PREA

TURE

SENS

OR A

PT10

0

16TE

06FI

N TE

MPE

RATU

RE S

ENSO

R B

PT10

0

17TE

07SU

CTIO

N TE

MPR

EATU

RE S

ENSO

R B

PT10

0

18TE

08EX

HAUS

T TEM

PREA

TURE

SEN

SOR

BPT

100

19TE

09FI

N TE

MPE

RATU

RE S

ENSO

R C

PT10

0

20TE

10SU

CTIO

N TE

MPR

EATU

RE SE

NSOR

CPT

100

21TE

11EX

HAUS

T TEM

PREA

TURE

SENS

OR C

PT10

0

22EP

EVAP

PRE

SSUR

E TRA

NSM

ITTE

R

23CP

COND

PRE

SSUR

E TRA

NSM

ITTE

R

24IT

CURR

ENT

TRAN

SDUC

ER S

IGNA

L

25KM

1-3

AUX

RELA

Y (C

ONT

ACTO

R)

26CH

AUX

RELA

Y (C

HW P

UMP)

27XC

AUX

RELA

Y (F

AULT

)

28PY

SPRA

Y LI

QUI

D S

OLE

NOID

VAL

VE

29ET

SEL

ECTR

ONI

C EX

PANS

ION V

ALVE

30SV

1SO

LENO

ID V

ALVE

25

31SV

2SO

LENO

ID V

ALVE

75

32SV

3SO

LENO

ID V

ALVE

50

33HQ

OIL

HEA

TER

34FA

NCO

OLI

NG FA

NS

35M

CCB

MOL

DED

CASE

CIR

CUIT

BRE

AKER

36N

FNO

ISE

FILT

ER

37F1

-2FU

SE

38V0

-3VA

RIST

ER

39TR

TRAN

SFO

RMER

40EK

DD

RIVE

R M

OD

ULE

-ETS

41EC

ECO

NOM

IZER

SO

LENO

ID V

ALVE

42PB

EMER

GERN

CY S

TOP

SWIT

CH

1 2 43NOTE

SUPP

LIED

BY

USER

S

LOCA

TED

ON

CHIL

LER

BODY

FRO

MT

O S

TART

ER PA

NEL

FRO

MT

O U

SER

S M

CC

LS Air-Cooled Screw Chillers 23

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Interface Connection Diagram

Connection between starter panel and motor connection between control panel and starter connection between starter panel and electrical actuator connection between control panel and pressuretemperature transducer have been done in the factory The dotted line box should be supplied by user

1 Compressor

2 Compressor

3 Compressor

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

101D24

401402

403404

PU

D24 SW

407408

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

407408

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR

REMOTE RESET SINGLE

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

101D24

401402

403404

PU

D24 SW

410411

405406

102

103D24 RS

LSS WORKING SCOPE USERS WORK SCOPE

CHILLER CONTROL PANEL USERS AUXEQUIPCONTROL PANEL

FOR CHILLED WATER PUMPNOTE 1)

STARTSTOP SIGNAL

FOR FLAUT INDICATION

RUNSTOP INDICATION

REMOTE RUNSTOP SINGLE

FOR COMPRESSOR-A

REMOTE RESET SINGLE

FOR COMPRESSOR-BRUNSTOP INDICATION

TERMINAL

NOTE 2)

NOTE 3)

NOTE 4)

407408

FOR COMPRESSOR-CRUNSTOP INDICATION

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

LS Air-Cooled Screw Chillers 24

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Note1 For startstop peripheral equipment - Contact description below 250vac01a2 Indication of chiller operation - Contact description below 250vac01a3 Interlock contacts supplied by user - Contact description no-voltage contact (dry contact) - Allowable contact resistance max 100ohm4 Remote runningrestart conta ct supplied by user - Contact description no-votage contact (dry contact) - Allowable contact resistance max 100ohm5 Symbol definition 52C Interlock of chilled water pump SW Remote runstop switch RS Remote restart switch

Transportation Handling and Hoisting

Note All SA factory packaged liquid chillers are complete with a full charge of refrigerant and oil and have been tested and inspected before shipment from the factory ldquoShipped Looserdquo factory supplied accessories are packed in cartons and securely strapped to the base of the chiller prior to shipment Immediately upon receiving your new SA chiller please check that no damage has occurred due to transportation and ensure that any ldquoshipped looserdquo accessories are included with the chiller If any discrepancies please notify the local office distributor and annotate the shipping documents accordingly

TransportationTrucks Railcars and High Cube shipping containers can be bullused to transport Model SA liquid chillersFor International deliveries all units are loaded into standard bulllsquohigh cubersquo shipping containers at the LS factory This ensures that the chiller arrives at its port of destination without damageTo unload the chiller from its shipping container the container bullmust be (grounded) placed on a flat hard surface with at least 15 meters of clear space in front of the container doors The chiller can then be lsquopulled outrsquo of the container using 100mm diameter rollers under the base rails Once clear of the container the chiller can be lifted using hooks cables and spreader bars as shown below

Handling and LiftingCare should be taken to avoid rough handling or shock due to bullimpact or dropping the unit Do not push or pull the unit from anything other than the base Never allow any part of the unit to fall during unloading or moving as this may result in serious damageTo lift the unit lifting holes are provided in the base of the bullunit Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1) Before moving the unit make sure that the proper lifting bullequipment for the installation of the chillers has been arranged and they can handle the total weight of the unit and accessoriesWhile moving and lifting the chiller must be kept level bull

horizontal

Safety Note While lifting Model SA chillers ensure that all the hooks are securely engaged in their lifting holes Do not stand below units while they are being lifted and do not shake or drop units heavily while positioning

Figure 1

LS Air-Cooled Screw Chillers 25

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Outline Dimensional Drawings

SA075 Outline

SA0125 Outline

SA150 Outline

SA170 SA210 Outline

SA100 Outline

LS Air-Cooled Screw Chillers 26

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Outline Dimensional Drawings (Continued)

SA225 Outline

SA250 SA270 Outline

SA300 Outline

SA325 SA350 Outline

LS Air-Cooled Screw Chillers 27

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Installation Guide

Note Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment

CAUTION Sharp edges and coil surfaces are a potential injury hazard Avoid contact with them

Unit location-Ventilation considerationsCare should be taken in the location of the unit to provide bull proper airflow to the condenser (See Figure 2 for required clearances) Due to the vertical condenser coil design of the LS chillers it bull is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length thus minimizing the wind effect on condensing pressure and performance and wind baffles can be installed as a protection measure against prevailing winds Using smaller clearances than shown in Figure 2 may cause bull hot discharge air recirculation to the condenser and could have a significant and detrimental effect on unit performance

Air-cooled water chiller unit must be installed in the outdoor at ground level or other well-ventilated places When the unit is placed near a wall it is necessary to leave adequate ventilation space as indicated in Figure 2 drawing below

Figure2

To facilitate maintenance and ensure good ventilation the bull minimum clearances between the liquid chiller and any enclosing walls must be provided (Shown in figure 2 above)To ensure adequate ventilation for the air cooled condenser bull the maximum height of any surrounding wall or solid enclosure is 1800 mm If the height is greater than 1800 mm it may be necessary to install wind deflectors or condenser fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust airIf possible an extra clearance space should be provided at one bull end of the chiller to facilitate the removal and replacement of cooler tubes in case this repair is ever required The total space required for this operation is approximately half of the overall length of the chiller (including the 2200mm shown in figure 2) Please contact factory for exact clearance dimensions

When 2 or more chillers are placed side by side the distance bull between chillers must be a minimum of 3500mm and the distance between the opposite side of the chiller and the enclosing wall must be increased to 2000mm (See figure 3)Where multi-unit installations are exposed to a prevailing wind bull blowing across (the width of ) the chillers it may be necessary to install wind baffles or fan discharge ldquochimneysrdquo to avoid re-circulation of hot condenser exhaust air In such cases please contact the factory engineering department for advice and guidanceWhere chillers are located on a ground level concrete slab it is bull usual to position the chiller on neoprene anti vibration pads and (if necessary) secure the chillers to the concrete with rag-bolts Foundation location bolt positions for each Model SA chiller are shown in the following pagesWhere chillers are located in areas accessible to the public or bull unauthorized persons they should be enclosed by a security fence to prevent damage to the chiller and injury to personsWhere chillers are positioned on rooftops of hospitals bull auditoriums residential buildings or other noise and vibration sensitive areas it may be necessary to provide special acoustic enclosures and spring type anti-vibration mountings These mountings are available from LS as an accessoryWhen chillers are positioned on rooftops care should be bull taken to avoid any contamination by exhaust air or gasses from adjacent boiler flues or extract fans which may seriously damage the chillerDo not mount electrical conduits switchgear pipe supports bull or any other miscellaneous equipment directly on the chiller or in a position that restricts airflow or access for service technicians

Figure3

LS Air-Cooled Screw Chillers 28

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Installation Guide (Continued)

FoundationA drain channel should be provided around the perimeter of the chiller to ensure that rain and wash down water can quickly amp bull completely drain away To reduce noise and vibration transmission chillers should always be mounted on neoprene pads or spring bumper type AVMsbull Where spring type AVMs are used chilled water pipes MUST have flexible connections adjacent to the chillers to prevent vibration bull transmission through the pipes and fatigue cracks developing in the cooler and chilled water piping

Chiller InstallationFoundation bolt holes are provided in the base rails of model SA chillers at the position shown in the accompanying drawings bull However it should be noted that where chillers are rigidly bolted to a supporting structure the incidence of noise and vibration transmission is increasedWhere model SA chillers are positioned on a rigid and level concrete pad the chiller should always be mounted on the neoprene anti-bull vibration pads (supplied loose with the chiller) These pads are usually sufficient to prevent any lateral movement of the chiller on its foundation without the need for anchor bolts These pads will also effectively prevent the transmission of any slight noise or vibration from the chiller to its supporting structureFor installations on roofs or in noise sensitive areas (hospitals studios amp some residential areas) pre-selected spring bumper anti-bull vibration mountings (AVMs) are available as a factory option ndash shipped loose for field installation Some of the foundation bolt holes in the chiller base rails are used to locate the load platform of the AVMs while the base of the AVMs should be rag bolted to the supporting slab

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA075 Foundation

SA125 Foundation

SA100 Foundation

SA150 Foundation

LS Air-Cooled Screw Chillers 29

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Installation Guide (Continued)

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

Base for square holes

SA225 Foundation

SA170 SA210 Foundation

SA250 SA270 Foundation

SA300 Foundation

SA325 SA350 Foundation

LS Air-Cooled Screw Chillers 30

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Installation Guide (Continued)

Water Piping Design of the chilled water piping system is very important bullThe installation must be made by professionals as any incorrect pipeline design and installation may affect the performance of the liquid chiller or even lead to serious damageFor most air conditioning comfort cooling applications a bullldquoclosed looprdquo chilled water piping system is used The basic components of this system include chilled water pumps isolating valves check valves expansion tank and terminal equipment (Air Handling amp Fan Coil units) The expansion tank should be installed in the return water system and the water level inside this tank should be at least 1 meter higher than all other parts of the system The expansion tank should not be sealed or pressurizedSince Model SA chillers utilize accessible ldquoflooded typerdquo coolers bullthey can also be used in lsquoOPENrsquo type air conditioning system using ldquoair-washersrdquo (instead of conventional AHUs ) as used in textile tobacco and some industrial process factories) In such cases special arrangements should be made to filter out any contaminates in the return water and chemical treatment may be needed to maintain a neutral Ph value in the chilled water circuitInlet and outlet chilled water connections on Model SA chillers bullare clearly marked and must be connected according to the signsShutoff valves must be installed in supply and return water bullpipes adjacent to the chiller to permit isolation of the chiller for maintenance (see figure 4)Flexible connections should be installed in supply and return bullchilled water piping to prevent the transmission of noise and vibration (see figure 4) NB This is a mandatory requirement where the chiller is mounted on spring type AVMs (anti vibration mountings)External pipes and accessories should not be fixed t o the bullchiller unit and must be independently supported to prevent damage to the chillerChilled water strainers must be installed in the supply pipe to bullthe chiller to prevent debris entering blocking and possibly damaging the cooler (see figure 4)All chilled water pipes and accessories should be properly bull

insulated and vapour sealed to prevent atmospheric condensation For installations where ambient temperatures can fall to 0˚c bullor below arrangements must be made to prevent cooler and chilled water piping ldquofreezing uprdquo

Electrical installation The electrical connections for Model SA chillers must be bulldesigned and installed by a professional electricianModels SA chillers are available to operate from a range of bull50 and 60Hz electricity supplies (see page 2 for details) The maximum allowable voltage fluctuation is plusmn 5 Unit power uses 3 phase 4 wire system For the security all bullunits must be connected to the ground (earth)Electric lines and cables should be sized according to locally bullapproved codes and standards Each chiller should have its own independent supply cableWhere chillers are mounted in exposed positions (hilltops bullbuilding rooftops etc) consideration should be given to

installing lightning arrestors

Figure4

LS Air-Cooled Screw Chillers 31

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Repair and Maintenance

Unit repair and routine maintenance Regularly remove the dust from the chiller surface and bullvarious exposed pipelines and repair any water refrigerant or oil leakage as soon as the leaks are discovered In corrosive atmospheres (ocean side or industrial locations) particular attention should be paid to corrosion occurring on exposed parts Anti-corrosion paint should be applied if necessaryFrequently check all fasteners and if found loose they should bullbe immediately re-tightened to eliminate vibration and potential leakage caused by vibrationRegularly check that any voltage imbalance between the 3 bullphases is within the acceptable limitsPeriodically check that all electrical connections are tight bullTemperature changes can cause electrical connections to become loose causing overheating and eventual failure of the component Isolate electrical supply before performing these checks Maintain the integrity of thermal insulation on coolers chilled bullwater pipes and low temperature refrigerant pipes This will prevent atmospheric condensation with resulting corrosion and loss of cooling efficiency Regularly smear a little grease on the valve bearings and bullmoving parts and a few drops of lubricating oil on rotating shafts door hinges and lock to avoid corrosion and seizureRegularly monitor and record the principle operating values of bulltemperature pressure voltage and current consumptionIf the chiller is exposed to ambient temperatures of 0˚c or bullbelow electrical trace heaters must be applied to the cooler (available as a factory fitted option) and associated chilled water pipe work to prevent freezing of the chilled water Alternatively the chilled water shut off valves should be closed and all water drained out of the cooler Drain valves are fitted to the bottom of the cooler water boxes for this purpose

The operation and maintenance of components

Compressor MaintenanceSince the compressor is semi-hermetic yearly compressor maintenance is not normally required However vibration is an excellent check for proper mechanical operation Compressor vibration is an indicator of the requirement for maintenance and contributes to a decrease in unit performance and efficiency It is recommended that the compressor be checked with a vibration analyzer at or shortly after start-up and again on an annual basis When performing the test the load should be maintained as closely as possible to the load of the original test

The initial vibration analyzer test provides a benchmark of the compressor and when performed routinely can give a warning of impending problems

Condensers The condensers are air-cooled and constructed of 38rdquo bull(9 52mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins LS recommend the use of foaming coil cleaners available at most air conditioning supply outlets Use caution when applying such cleaners as they may contain potentially harmful chemicals Care should be taken not to damage the fins during cleaning If the service technician has reason to believe that the bullrefrigerant circuit contains non-condensable purging may be required strictly following Clean Air Act regulations governing refrigerant discharge to the atmosphere The purge valve is located on the vertical coil header on gas bullside of the condenser Purge with the unit off after shutdown of 15 minutes or longer to allow air to collect at the top of the coil Restart and run the unit for a brief period If necessary shut unit off and repeat the procedure Follow accepted environmentally sound practices when removing refrigerant from the unit

Filter-DrierIn order to ensure the best working state of the unit the interior of the cooling system must be clean and free from any moisture (water) To remove all moisture the refrigeration system has been evacuated to a maximum pressure of 005 mbar before changing with refrigerant in the factory When the chiller is operational the Filter-Drier which is installed in the liquid refrigerant pipeline between the liquid shut-off valve amp electronic expansion valve removes any residual moisture and acids and solid particles as small as 10 microns The filter drier core should be replaced during annual maintenance operations amp any time that the moisture indicator sight glass changes colour from GREEN to YELLOW

Attention When charging liquid refrigerant into the condenser the condenser fans and chilled water pump must be kept running to prevent excessive pressure in the

condenser and freezing-up of the evaporator

LS Air-Cooled Screw Chillers 32

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Repair and Maintenance (Continued)

Liquid sight glassThe liquid refrigerant sight glass in installed in the liquid refrigerant pipeline between the filter drier and the electronic expansion valve It provides a visual indication of liquid refrigerant flow and also the presence of gas bubbles which indicate low refrigerant charge a system blockage or the presence of non-condensable gasses in the system The presence of moisture (water) in the system is indicated when the green spot in the sightglass changes its colour to yellow

Refrigerant and OilThe correct operating amount of refrigerant R-134a and lubricating oil is charged into the chiller at the LS factory before testing and shipment of the finished chiller Under normal circumstances it will not be necessary to add to or replace this refrigerant and oil during the working life of the chiller If the chiller is damaged allowing refrigerant andor oil to leak out of the chiller then LS professional service technicians should be called in to identify and repair the leak and replace the lost refrigerant and oil

CoolerThe heat exchanger used with Model SA liquid chillers is of the flooded shell and tube type with the chilled water passing through the copper heat exchanger tubes These tubes should be mechanically brush cleaned annually to maintain optimum cooling efficiency and more frequently if the chilled water is contaminated

LS Air-Cooled Screw Chillers 33

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Guide Specifications

PART 1 ndash GENERAL

101 SCOPEThe requirements of the General Conditions Supplementary Conditions and Drawings apply to all work herein

102 SYSTEM DESCRIPTIONSFactory packaged air cooled liquid chillers incorporating low noise twin screw compressor(s) and low noise fans

103 QUALITY ASSURANCEUnit shall be rated in accordance with ARI Standard 550590 (USA) bullUnit construction shall comply with ASHRAE 15 Safety Code UL 1995 bulland applicable ASME Codes (USA)Unit shall be manufactured in a facility registered to ISO 90012000 bullManufacturing Quality StandardThe packaged chiller shall be pressure and leak test evacuated and bullfully charged with refrigerant and oil and shall be factory operational run tested at full and part load at specific jobsite design ambient temperatureChiller manufacturer shall have factory trained and supported service bullorganisation local to the chiller installation to provide commissioning and service support throughout the manufacturers warranty periodManufacturer shall warrant all equipment and material of its supply bullagainst defects in workmanship and material for a period of 12 months from initial start-up

104 DELIVERY AND HANDLINGUnit shall be delivered to jobsite fully assembled charged with refrigerant and oil by Manufacturer or Manufacturers authorized agentDuring shipment the chiller will be provided with protective coverings to vulnerable components (condenser coils cooler nozzles control center etc)Unit shall be handled transported and stored in accordance with Manufacturers instructions

PART 2 ndash PRODUCTS

201 GENERAL The equipment shown on the drawings is based on the model SA air cooled liquid chiller as manufactured by the LS MTRON CORP Alternative manufacturers equipment may be acceptable providing this complies with these specifications and the scheduled performance and is approved by project owner and his authorized representative

202 EQUIPMENT DESCRIPTIONSupply and install and commission as shown on the drawings and schedules complete factory assembled charged and operationally tested air cooled screw compressor chiller(s) as specified herein Chiller shall include one or more independent refrigeration circuits semi-hermetic twin screw compressors(s) shell and tube liquid cooler air cooled condense(s) Refrigerant R-134a lubrication system and oil interconnecting piping and wiring and lockable control center housing safety operating and capacity controls necessary for the safe automatic operation of the liquid chiller

203 OPERATING CHARACTERISTICS Unit shall be capable of starting-up and running in outdoor ambient bulltemperatures from -18˚ to 52˚C (0˚ to 125˚F)

Unit should be capable of starting up with fluid entering temperature bullto the cooler of 32˚C (95˚F)

204 UNIT CONSTRUCTION Unit base frame shall be constructed of 100 to 200mm rolled steel channel sections welded and bolted to form rigid load bearing framework to support all major unit components and safe lifting platform Frame shall be shot blasted after welding and finished with corrosion resistant primer and air drying epoxy based enamel Condenser coil frameworks cabinet and control center cabinet shall be of heavy gauge galvanised sheet steel with oven baked powder coating capable of withstanding 500 hour salt spray test in accordance with ASTM (USA) B-117 Standard

205 MOTOR COMPRESSOR ASSEMBLY Shall comprise semi-hermetic rotary twin screw type directly driven by suction gas cooled accessible semi-hermetic motor at 2950 RPM Motor shall have inherent overload protection buried in windings and external current overloads Capacity control to be modulating slide valve factory set to provide 4 capacity steps (per compressor) Compressor housing of precision machined cast iron incorporating discharge muffler oil separator lubricating oil sump with auxiliary oil heater

206 COOLERShall be of the lsquofloodedrsquo shell and tube type with removable heads and mechanically cleanable tubes of seamless copper with internally and externally enhanced surfaces Tubes shall be mechanically expanded into multiple grooves in tube sheets Cooler will incorporate one two or three independent refrigerant circuits with a common chilled liquid multi-pass circuit arrangement Coolers will be factory insulated with 20mm (optional 50) closed cell insulation with all joints vapour sealed and water drain and vent taps in cooler heads

207 AIR COOLED CONDENSER(S)Each refrigerant circuit shall be provided with its own condenser assembly comprising four individual coils arranged in an inverted ldquoMrdquo formation Coil construction is to be of internally enhanced seamless copper tubes mechanically bonded to louvered aluminium alloy fins Fins to have hydrophilic and corrosion resistant surface treatment Low sound condenser fans shall be of pressed and formed aluminium alloy securely fastened to rust less steel hubs with the whole assembly statically and dynamically balanced High efficiency 6 pole 3 phase fan motors with class F insulation and totally enclosed permanently lubricated bearings

208 REFRIGERATION SYSTEM COMPONENTS Shall include replaceable filter drier moisture indicating sight glass electronic expansion valve suction discharge and liquid line service valves and complete operating charge of refrigerant R-134a and lubricating oil Each refrigeration circuit in the cooler shall be fitted with double relief valves with changeover cock

209 CONTROL CENTERShall be mounted on one end of the unit (opposite to that of the cooler connections) and shall comprise an enamelled steel enclosure to IP-54 with separate power (high voltage) section with door interlocked isolators and a control (low voltage) section housing microprocessor LCD display and safety controls All doors to be key lockable Power Section shall contain closed transition star delta starters for each

LS Air-Cooled Screw Chillers 34

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

Guide Specifications (Continued)

compressor and fan contactors all with thermal and current overloads for each phase For applications in design ambient temperatures above 46˚C (115˚F) the Control Center shall be provided with an independent cooling system to protect the operational and safety controls from excessive temperature rise (sun baking)

210 CONTROLS SAFETIES AND DIAGNOSTICS

2101 CONTROLSChiller controls shall include the following minimum requirements

Microprocessor with permanent memory (battery back up system a not accepted)Separate terminal block and supply for power and controlsb Separate 220 volt supply to serve all controllers relays and control c componentsONOFF control switchd Replaceable solid state controllerse Pressure sensors and transducers to measure suction intermediate f economiser discharge and oil pressures Thermistors to measure cooler entering and leaving fluid temperatures and outside ambient temperatures

2102 CONTROL FUNCTIONSUnit control functions shall include the following

Automatic circuit leadlaga Capacity control based on leaving chilled fluid temperature Limiting b the chilled fluid temperature pull down rate at start-up to an adjustable range of 02˚F to 2˚F (01 to 11˚C) per minute to prevent excessive demand spikes at start-upOne day time schedule c Leaving chiller fluid temperature reset from return fluid and outside d air temperatureChilled water pump start stop controle Chiller control for parallel chiller applications without addition of f hardware modules and control panels (requires thermistors)Timed maintenance scheduling to signal maintenance activities for g strainer maintenance and user-defined maintenance activities Low ambient protection to energize cooler heaters (heaters are h optional)Single step demand limit control activated by remote contact i closure

2103 DIAGNOSTICS

The control panel shall include as standard a display a - Portable hand held display module with a minimum of 4 lines and 20 characters per line in clear English - Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics

Information included for display shall beb - Compressor lockout - Low fluid flow - Cooler freeze protection(option) - Thermistor and transducer malfunction - Entering and leaving-fluid temperature - Evaporator and condenser pressure - System refrigerant temperatures - Chiller run hours - Compressor run hours - Compressor number of starts

- Compressor current - Time of day

Display module in conjunction with the microprocessor must 1 also be capable of displaying the output (result) of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is startedDiagnostics shall include the ability to review a list of the 30 2 most recent alarms with clear language description of the alarm eventThe chiller controller shall include one connection part for 3 communicating with the local equipment network The control system shall allow software upgrade without the 4 need for new hardware modules

2104 SAFETIESUnit shall be equipped with thermistors and all necessary a components in conjunction with the control system to provide the unit with the following protections

- Reverse rotation - Low chilled fluid temperature - Motor over temperature - High pressure - Electrical overload - Loss of phase

Condenser fan motors shall have internal over current protectionb

211 ELECTRICAL REQUIREMENTSUnit primary electrical supply shall enter the unit at a single location a (some chiller voltagesize combinations require 2 power supplies)Primary electrical power supply shall be rated to operate up to 125˚F b (52˚C) ambient temperatureUnit shall operate on 3-phase power at the voltage shown in the c equipment scheduleControl points shall be accessed through terminal blockd Unit shall be shipped with factory control and power wiring installede

212 CHILLED WATER CIRCUITChilled water circuit shall be rated for 150 psig (1034 kPa)a Electronic thermal ldquoproof of flowrdquo switch shall be factory installed b and wired

213 SPECIAL FEATURES

2131 UNIT-MOUNTED NON-FUSED DISCONNECTUnit shall be supplied with factory-installed door interlocked non-fused electrical disconnect for main power supply

2132 CLIMATIX CONTROLUnit shall be supplied with field-installed interface device that allows any controller to read values in system elements connected to the CLIMATIX Communication Bus using its RS-485 connection

2133 MODBUS TRANSLATOR CONTROLUnit shall be supplied field-installed interface between the chiller and a MODBUS Local Area Network

2134 LON TRANSLATOR CONTROLUnit shall be supplied with field-installed interface between the chiller and a Local Operating Network (LON ie LonWorks FT-10A ANSIEIA-7091)

LS Air-Cooled Screw Chillers 35

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea

wwwlsairconditioncom

Overseas Sales Office in KoreaAir conditioning Overseas Business Dept6F Sungji Building 1505-17 Gwanyang-dong Dongan-gu Anyang-si Gyeonggi-do KoreaTel 82-31-450-3531~3538 Fax 82-31-450-3540

Factory in China266109 Yu-Huangling Industrial AreaXiazhuangChengyang District Qingdao ChinaTel 86-532-8096-5648Fax 86-532-8096-5688

Distributed by

Specifications subject to change without prior notice ACOS-01-2000-0901 Printed in Korea