a flooded screw chiller

Water‐

Floode

Produc

340~14

50H

‐cooled

ed evapo

ct Catal

450 kW

z/60Hz

Screw

orator t

ogue

R13

Chiller

type

34a

CONTENT

Company introduction

Nomenclature

Features and benefits

Mechanical components

Specification

Physical Dimensions

Construction

PLC controller

Typical piping

Wiring diagram

Long history Nearly a half century experience in water chiller manufacturing industry,

Midea has been the biggest domestic brand of water chiller. Make

satisfying the customers’ needs our destination and try our best to build a

comfortable and high quality life for human.

Impressive performance Midea water chillers are widely used in plastic industry, electroplating industry,

food processing, chemical industry and other technological process which

needs a lot of chilled water. The sales get big and steady improvement year by

year.

Advanced technology Good technical background and experience in chiller R&D ，environment friendly

refrigerant and smart control technology makes the products more efficient, reliable and has

longer lifespan. Dual oil separators and Venturi tube device guarantee reliable oil return.

Reliable service Special after sales service center cooperates with sales department and the factory

makes timely service and solving any problem as quickly as possible. Professional

technicians and dedication will make the customer no need worrying about the product.

Best cost performance Almost the same quality level with those international brands but much lower price makes

our products have a very high cost performance. It’s best choice for those who gets a tight

budget but needs good performance and long lifespan.

Midea chiller manufacture-base introduction With 46 years experience in chiller industry, Midea Chongqing chiller manufacturing base is becoming one of

the largest chiller company in China. It covers an area of 800 Mu (137 acre), with a registered capital of 12.5 million US $ and a total investment of over 0.6 billion US$. There are 6 product series and over 100 model products including centrifugal chillers, screw water chillers, scroll water chillers, water-cooled packaged units, and central air-conditioning indoor terminal devices(AHU/FCU). Five chiller manufacture shops with 14 flexible production lines lead a manufacturing capacity of 250 units centrifugal chillers, 1000 units of air cooled screw, 2000 units of water cooled screw and 200000 units of AHU products.

Strong R&D and manufacturing capacity makes Midea Chongqing general become the fastest developing company in chiller industry. The chiller test lab which is certified by China National Refrigeration Equipment Inspection Center gets the largest refrigeration test capacity in Asia. The engineer team with 100 top engineers and 2 chiller experts who were awarded by the central government in structure, electricity, performance testing and software aspect makes Midea the headship in chiller industry. In the year of 2011 Midea refrigeration group will invest another 150 million RMB for test lab as ARI test stand, big capacity air cooled screw life span testing room, 1500kW compressor motor test stand, etc.

Concentrating on energy-saving and ejection-decreasing, Midea Chongqing chiller factory commits itself to the reliable and high efficiency products for the world. The chiller products are widely used in different countries and obtain good public praise from the clients. The solution for the Beijing capital international airport ,Jakarta international airport, China rapid transit station wins good feedback and commend. Continuing with the past and opening up the future, Midea chiller brand will go further and create an illustrious future.

Midea C series screw chiller is one kind of very mature products which use flooded type evaporator. Optimized

system design and enhanced heat exchange efficiency makes the unit working best under both full load and

partial load. It’s good choice for hotel, shopping mall, hospital, factory, cinema and other civil architecture air

conditioning system. Besides, it is widely used in plastic industry, electroplating industry, food processing,

chemical industry and other technological process which needs a lot of chilled water.

Nomenclature

Water-cooled chiller

Flooded evaporator Compressor structure type B Semi-hermetic

Refrigerant type C R134a; Omit for R22

Compressor structure type LG Screw type compressor

Design sequence code Nominal cooling capacity (kW)

LS B LG XXX – M C F 1

High efficiency

Features and Benefits In the 21st century, Energy Conservation & Environment Protection will be one of the most important themes.

With the fast development of technology in the world, more and more high-efficiency chillers go to peoples’ field

of vision. High efficiency and environment friendly air conditioners are needed and Midea just provide such

most effective & reliable solutions to all valuable customers.

High Efficiency（with Flooded Evaporator）

New kind of high efficiency finned copper pipe enhances the

heat-exchange process, improves heat exchange efficiency and makes

the evaporator much more compact for saving installation space.

Significantly improve the evaporating temperature and reduce heat

transferring temperature difference which directly improves

heat-exchange efficiency, provide most cost effective & reliable solutions

to all valuable customers.

Green chiller R134a environmental-friendly refrigerant

Refrigerant of the Chlorine-free HFC with zero ozone depletion potential.

Very low GWP (Global Warming Impact).

High reliability and excellent serviceability Flooded evaporator makes cleaning inside of pipes possible, and guarantees high

reliability.

Discharge cut-off valve and liquid line angle valve for simplified maintenance.

Simplified field wiring for easy installation.

Optimized & User-friendly Operating Interface Midea chiller adopts Allen-Bradley PLC which

provides advanced algorithm and reliable control.

Graphical display of the operating state, operation

scheduling, malfunction inquiry, help menu for easy

trouble shooting and other user-oriented functions.

General characteristic of LSBLG/MCF liquid chiller

SEMI-HERMETIC COMPRESSOR Advanced Twin-Rotor Screw Compressor Midea® Screw Chiller equipped with the 3rd generation industrial Semi-hermetic Screw compressor that has the latest advanced 5-6 asymmetry dentiform rotors. The rotors are processed by high-precision CNC and each part is well-proportioned and none-gap matching, which minimizes the friction resistance and clearance lost, guarantees quiet running and good duration.

High-precision machining and measurement makes rotor clearance reach µm-class, so it reduces the leakage between high and low pressure. Under continuous operation, the rotors still keep their best clearance and achieve highest efficiency.

Semi-hermetic compressor with low running noise and well cooled down by refrigerant, low running temperature, no leakage potential as open compressor.

Patented motor-cooling design in ducts of refrigerant flow encompassing stator provides best dissipation of heat and no requirement for computer room AC.

Bearing Long service life

High-precision large-sized axial and radial bearings are selected to support the male and female rotors for long lasting life. With effective lubrication system, the bearing service life can be further extended. While the compressor is running, lubricant is injected into all bearings due to pressure difference. High-performance integral + outside oil

separator The internal of built-in oil separator utilizes three-stage filter mechanism with high-density filter

element to achieve optimal oil separation effect and its efficiency is higher than 99.7%.Two oil separators cooperate together makes the best oil separating effect.

Detachable demister for cleaning. Oil supplied by pressure difference and no need of oil pump.

Dual Compressors (Min. 825 ~ Max.1500kW) Large cooling capacity chillers have two truly independent refrigerant circuits, compact outline and superior partial load efficiency. Besides, when one of the compressors breaks down, the other one can work independently. So the chiller can provide much higher reliability and minimize the loss of user. Heat exchangers Midea heat exchangers are designed by professional design software and through rigorous tests. Double-grooved holes at tube support for tube expansion are designed to prevent leakage and increase the durability of heat exchanger. Flooded-type Evaporator Evaporator is of shell and tube, flooded type designed for 1MPa working pressure on the refrigerant side (Higher pressure vessels can be customized). Replaceable integral finned copper tubes are mechanically bonded to steel tube sheets. The evaporator has been tested under extreme conditions. The 20MM thickness insulation covers all low temperature surfaces, including the evaporator, water boxes, oil return lines, chilled water flow switch piping, etc. Condenser

Midea condenser has a specially designed baffle, in

the entrance of condenser, to prevent direct

impingement of high-velocity refrigerant gas on tube

surface and thus eliminate the related vibration and

noise. It has been tested under extreme conditions.

Water side working pressure is designed for 1.0Mpa

(Higher pressure vessels can be customized).

Throttling device Orifice baffle with no moving parts can guarantee high reliability

and it cooperates with EXV（Danfoss）to throttle the

high-pressure liquid refrigerant from condenser to evaporator. EXV which is controlled by EKC 312 module

provides high-precision adjustment and perfectly matches the compressor load，both full load and partial load.

Refrigeration cycle

Midea screw chiller uses the environment friendly refrigerant R134a of which ODP is zero. As below schematic

diagram shown, the low temperature and low pressure gas enters the compressor through suction port. Then

refrigerant gas that entered the compressor is compressed to a high

temperature and high pressure gas and enters the condenser to

release heat to cooling water. The condensed liquid passes the

throttling device, becomes the mixed state and enters the lower part of

the evaporator. It is then spread into a wider surface by distributor.

Finally the distributed refrigerant evaporates by taking the heat from the chilled water inside the evaporator tube

and repeats the cycle.

Lubrication cycle

As mentioned before, there’re two oil separators. One is integrated inside the compressor and the other

is one external oil separator. The refrigerant

and oil mixture gets separated in the internal

oil separator for the first time and then to the

external oil separator of which the separating

efficiency can reach 99%. Oil will return to

compressor through the oil return pipe by

pressure difference. Some oil remains in the

evaporator will be sucked up by the Venturi

tube and goes back to compressor. These

two oil return circuits can guarantee reliable

oil return efficiency.

PLC-based controls Control panel layout

PLC controller Midea LSBLG/MCF1 chiller adopts PLC controller which enables the user to monitor and control the chiller with high-class accuracy. PLC control system guarantees high precision and stability. The control system is module-designed, easy for installation and maintenance. The chiller which reserved with RS485 port can be interfaced with BAS (Building Automation system). The remote monitoring and control of the chiller is possible. True color touchable screen The display of control regulation and operating parameters, diagnostics, and error messages is a 7 inch, 65636 colors TFT displayer with 800×480 resolution. The screen can display error codes, settings of various set points, specified temperature and pressure values, and the status of operating parameters and options. Power-down memory function When power-down, the chiller will maintain preceding running mode and parameter set point. Weekly operation scheduling The user can set the chiller operation schedule in the weekly timetable to run and stop the chiller automatically. If sudden power down happens, the chiller will not restart until manual reset. Data acquisition & Storing Max. 256 records of latest alarms and 500 seconds chilled/cooling water temperature trend display.

3-class password There’re 3-class passwords for the user, Installation and commissioning technicians and factory. Unauthorized

access to the control is protected with random-generated password.

Self-Diagnosis Self-diagnosis is always performed before start-up to enable safe operation. Only all the requirements get

satisfied，the chiller will start. If there’s any malfunction, it will be displayed on the screen.

Multiple self-protecting functions guarantee the safety of unit and running perfectly Items Function

High/low pressure protection Guarantee the Comp. running in the right range and its lifespan

Power open phase protection Protect Comp. from damage under such situation of open phase and anti-phase

Anti-freeze protection under cooling mode

Protect the copper pipes of evaporator from damage due to water freeze

Frequent startup protection Protect Comp. from getting burned by the overheated winding due to frequent startup

Overcurrent protection of Comp. Protect Comp. from getting burned due to too heavy current

Overheat protection of compressor Protect Comp. from damage due to lack of refrigerant or lubricant oil

Water flow protection Protect Comp. from getting burned due to failure of heat-exchangeReverse protection controller(APRS) Guarantee the comp. motor running in the right direction

Operating Limits

Leaving chilled water temp. Entering cooling water temp.

5~15 ºC 20~35 ºC

Notes:

If chilled water or cooling water temperature exceeds this range, please contact Midea

for special requirements.

Specification

Model

Items

LSBLG

340/MCF1

LSBLG

400/MCF1

LSBLG

455/MCF1

LSBLG

540/MCF1

LSBLG

690/MCF1

LSBLG

720/MCF1

LSBLG

825/MCF1

Nominal Capacity

RT 96.7 113.8 129.4 154.2 196.2 204.8 234.6

kW 340 400 455 542 690 720 825

kCal/h 292,400 344,000 391,300 466,120 593,400 619,200 709,500

Electrical data

Power input kW 64.0 72.1 84.7 99.0 121.1 126.0 152.6

Rated current A 107.6 121.2 142.4 166.4 203.6 211.8 256.5

Power supply 380~415V-3P-50Hz

Cooling Capacity control Automatic

Capacity steps % 25-50-75-100 or stepless as option

Compressor

Type Semi-hermetic twin screw compressor

Starting mode Y-∆

Quantity 1 1 1 1 1 1 2

Rotate speed rpm 2950

Refrigerant

Type R134a

Charge kg 210 240 240 240 250 250 360

No. of circuits 1 1 1 1 1 1 2

Refrigerant control Orifice baffle + EXV

Condenser

Type Shell and tube

Pass No. 3 3 3 3 3 3 2

Water flow rate m3/h 69 81 93 110 140 146 168

Water pressure drop kPa 55 58 60 62 65 68 68

Water side working pressure MPa 1MPa ( Higher pressure can be customized)

Pipe connections DN125 DN125 DN125 DN150 DN150 DN150 DN150

Evaporator

type Flooded type

Pass No. 3 3 3 3 3 3 2

Water flow rate m3//h 58 69 78 93 119 124 142


Water side working pressure MPa 1MPa ( Higher pressure can be customized)


Dimension

Length mm 3500 3500 3500 3600 3600 3600 4500

Width mm 1400 1400 1400 1500 1500 1500 1600

Height mm 1750 1750 1750 2000 2000 2000 1900

Shipping weight kg 3000 3200 3300 3800 4000 4100 5500

Operating weight kg 3300 3550 3650 4200 4450 4550 6000

Notes：1. All parameters are under standard condition: Entering / leaving chilled water temperature: 12 / 7 ℃; Entering

/leaving cooling water temperature: 30/35 ℃; Fouling factor is 0.086 m2 • ℃ / kW.

2. Specifications are subject to change with product improvement, please take chiller nameplate as final.

Model

Items

LSBLG

915/MCF1

LSBLG

1000/MCF1

LSBLG

1110/MCF1

LSBLG

1200/MCF1

LSBLG

1300/MCF1

LSBLG

1385/MCF1

LSBLG

1450/MCF1

Nominal Capacity

RT 260.0 284.4 315.7 341.3 369.7 393.9 412.4

kW 914 1000 1110 1200 1300 1385 1450

kCal/h 786,040 860,000 954,600 1,032,000 1,118,000 1,191,100 1,247,000

Electrical data

Power input kW 64.0 162.3 177.3 200.9 210.0 232.1 243.4

Rated current A 107.6 272.8 298.1 337.7 353.0 390.2 409.2

Power supply 380~415V-3P-50Hz

Cooling capacity control Automatic

Capacity steps % 25-50-75-100 or stepless as option

Compressor

Type Semi-hermetic twin screw compressor

Starting mode Y-∆

Quantity 2 2 2 2 2 2 2

Rotate speed rpm 2950

Refrigerant

Type R134a

Charge kg 380 400 400 420 440 440 440

No. of circuits 2 2 2 2 2 2 2

Refrigerant control Orifice baffle + EXV

Condenser

Type Shell and tube type

Pass No. 2 2 2 2 2 2 2


Water pressure drop MPa 70 72 75 78 80 82 85

Water side working

pressure kPa 1MPa ( Higher pressure can be customized)


Type Flooded type

Evaporator

Pass No. 2 2 2 2 2 2 2



Water side working

pressure MPa 1MPa ( Higher pressure can be customized)


Dimension

Length mm 4500 4600 4600 4600 4600 4600 4600

Width mm 1600 1700 1700 1700 1700 1700 1700

Height mm 1900 2100 2100 2100 2100 2100 2100

Shipping weight kg 6000 6600 6800 7000 7200 7400 7500

Operating weight kg 6500 7150 7350 7600 7850 8050 8150

Notes：1. All parameters are under standard condition: Entering / leaving chilled water temperature: 12 / 7 ℃; Entering

/leaving cooling water temperature: 30/35 ℃; Fouling factor is 0.086 m2 • ℃ / kW.

2. Specifications are subject to change with product improvement, please take chiller nameplate as final.

Capacity Tables

Items

Model

Evaporator

LWT

℃

Condenser EWT ℃

25 28 30 32 35

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

LSBLG

340/MCF1

4 341 57.1 331 58.8 303 62.5 299 64.3 283 67.4

5 355 57.5 344 59.3 315 63.0 311 64.8 295 67.9

6 369 57.9 358 59.7 330 63.5 323 65.2 307 68.5

7 372 58.4 372 60.1 340 64 336 65.8 319 69.0

8 386 58.9 386 60.5 354 64.4 350 66.3 332 69.5

9 401 59.3 401 61 368 64.8 364 66.8 345 70.0

LSBLG

400/MCF1

4 375 64.2 364 66.2 356 67.8 348 73.7 335 77.2

5 390 64.7 378 66.7 370 68.4 362 74.3 349 77.9

6 405 65.1 393 67.2 385 68.8 376 74.9 363 78.5

7 421 65.7 409 67.7 400 72.1 391 74.5 378 79.1

8 435 65.9 424 68.1 415 73.2 407 76.0 392 79.7

9 448 66.8 440 68.6 432 74.6 422 76.6 408 80.4

LSBLG

455/MCF1

4 436 77.4 423 79.8 414 81.8 404 84.1 390 88.1

5 453 78.0 440 80.4 430 82.4 421 84.7 406 88.8

6 471 78.5 457 81.0 447 83.0 437 85.4 422 89.5

7 486 79.2 475 81.6 457 84.7 450 86 439 90.2

8 500 79.5 493 82.1 483 85.4 473 86.7 456 90.9

9 518 80.6 512 82.8 502 85.9 491 87.3 474 91.7

LSBLG

540/MCF1

4 508 85 497 88 482 96 471 97 454 102

5 526 86.6 510 89.3 499 97 488 98.0 470 102.8

6 547 87.2 531 89.9 519 97.7 508 98.8 489 103.6

7 569 87.8 552 90.6 542 99 528 99.5 509 104.4

8 589 88.2 573 91.2 560 99.1 548 100.3 529 105.1

9 608 88.7 595 91.9 583 99.8 570 101.1 550 106.0

LSBLG

690/MCF1

4 654 111.6 631 115 616 117.9 601 121.6 577 127

5 680 112.4 657 116 641 119 625 122.1 600 128

6 707 113.2 683 116.8 666 119.7 650 123.1 624 129

7 731 114.0 710 117.6 690 121 676 124 649 130

8 759 115.1 739 118.4 721 121.5 703 124.9 676 131.1

9 789 116.2 768 119.2 750 122.3 726 125.9 703 132

Notes:

LWT- Leaving water temperature EWT – Entering water temperature

CAP kW- Cooling capacity COMP kW -Compressor power input

Items

Model

Evaporator

LWT

℃

Condenser EWT. ℃

25 28 30 32 35

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

LSBLG

720/MCF1

4 680 116.1 656 119.6 641 122.6 625 126.5 600 132.1

5 707 116.9 683 120.6 667 123.8 650 127.0 624 133.1

6 735 117.7 710 121.5 693 124.5 676 128.0 649 134.2

7 759 118.6 738 122.3 720 126 703 129.0 675 135.2

8 785 119.7 769 123.1 750 126.4 731 129.9 703 136.3

9 813 120.8 799 124.0 780 127.2 755 130.9 731 137.3

LSBLG

825/MCF1

4 774.5 136.9 751 141 735 149.4 718.2 153.7 692.3 161.2

5 805.3 137.8 781.0 142.1 764.4 150.5 747.1 154.9 720.5 162.3

6 836.9 138.9 812.0 143.2 794.6 151.7 776.9 156.0 749.4 163.7

7 865.3 140 843.6 144.1 825 153 807.6 157.3 779.2 165.0

8 902.3 141 876.4 145.2 857.9 153.9 839.0 158.5 809.9 166.1

9 937 142.1 909.9 146.3 891 155.1 871.6 159.5 841.3 167.5

LSBLG

915/MCF1

4 866.6 144.4 840.2 148.7 822.1 158.3 803.6 162.8 774.6 170.4

5 901.0 145.3 873.7 150 855 159.4 835.9 163.8 806.2 171.8

6 936.4 146.3 908.4 151 889 160.8 869.2 165.1 844.5 173.3

7 967 147．3 943.8 152.1 915 162 903.4 166.5 871.8 174.7

8 999 148．3 980.3 153.1 959.8 163.0 938.8 167.6 906.0 175.9

9 1045 149．3 1018.1 154.2 996.9 164.3 974.9 168.9 941.4 177.3

LSBLG

1000/MCF1

4 944 158.4 915 163.3 895 174.8 875 181.7 844 190.6

5 981 159.5 951 164.4 931 176.3 910 183.2 878 192.2

6 1020 160.5 989 165.7 968 176.6 947 184.7 913 193.7

7 1056 161.7 1028 166.8 1000 177 984 185.9 949 195.0

8 1098 170.8 1068 168.1 1045 182.1 1022 187.5 987 196.7

9 1138 171.7 1109 169.2 1086 183.4 1062 188.8 1025 198.2

LSBLG

1110/MCF1

4 1047.5 175.8 1015.8 181.3 993.9 196.3 971.3 201.7 936.4 211.6

5 1089.1 177 1056.1 182.5 1033.6 197.9 1010.4 203.4 974.3 213.3

6 1131.9 178.2 1098 183.9 1074.6 199.4 1050.7 205.0 1013.4 215.0

7 1172.2 179.5 1141 185.1 1110 200.9 1091.9 206.4 1053.8 216.5

8 1224.9 189.6 1185 186.6 1160.3 202.1 1134.7 208.1 1095.2 218.3

9 1285.2 190.6 1230.6 187.8 1205 203.6 1178.5 209.6 1137.9 220.0

Notes:



Items

Model

Evaporator

LCWT

℃

Condenser EWT ℃

25 28 30 32 35

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

Nominal

CAP/ kW

COMP

kW

LSBLG

1200/MCF1

4 1153.7 194 1118.8 200 1094.6 205 1069.8 210.6 1031.3 220.9

5 1199.5 195.3 1163.2 201.4 1138.4 206.5 1112.8 212.4 1073.1 222.7

6 1246.6 196.7 1209.3 202.9 1183.5 208.1 1157.2 213.9 1116.1 224.4

7 1291.1 198 1256.7 204.3 1225 210 1202.6 215.5 1160.6 226

8 1341.7 199.4 1305.2 205.9 1277.9 211 1249.7 217.3 1206.2 227.8

9 1391.7 200.5 1355.4 207.2 1327.2 212.6 1298 218.8 1253.3 229.6

LSBLG

1300/MCF1

4 1261 217.5 1223 224.3 1197 229.8 1170 236.0 1128 247.6

5 1311 219.1 1271 225.8 1245 231.5 1217 238.1 1174 249.6

6 1363 220.5 1322 227.6 1295 233.4 1266 239.9 1221 251.7

7 1412 222.0 1374 229.1 1338 235.1 1316 241.7 1270 253.4

8 1467 223.6 1427 230.8 1398 236.6 1367 243.7 1319 255.4

9 1522 224.8 1482 232.3 1452 238.3 1420 245.4 1371 257.5

LSBLG

1385/MCF1

4 1343 228.1 1303 235.2 1276 241.0 1247 247.5 1202 259.7

5 1397 229.7 1355 236.8 1327 242.8 1297 249.7 1250 261.8

6 1452 231.3 1408 238.7 1379 244.7 1349 251.6 1301 263.9

7 1504 232.8 1464 240.2 1418 245.8 1402 253.4 1353 265.7

8 1563 234.4 1520 242.1 1489 248.1 1457 255.5 1406 267.9

9 1621 235.7 1579 243.6 1547 249.9 1513 257.4 1461 270.0

LSBLG

1450/MCF1

4 1406.5 236.8 1363.9 244.2 1335.4 250.2 1305.0 257.0 1258 269.6

5 1462.5 238.5 1418.2 245.8 1388.8 252.1 1357.6 259.2 1309.1 271.8

6 1520.1 240.1 1474.5 247.8 1444 254.1 1411.9 261.2 1361.6 274.0

7 1574.4 241.7 1532.3 249.4 1480 255.9 1467.3 263.1 1416 275.9

8 1636.3 243.4 1591.6 251.3 1559.3 257.6 1524.9 265.3 1471.7 278.1

9 1697.3 244.7 1652.9 252.9 1619.5 259.5 1583.9 267.2 1529.2 280.3

Notes:



Dimensions Installation Dimensions

Hei

ght

LengthWidth

Recommended clearance D

Maintenance clearance F

Recommen

ded

clea

rance

E

Recom

mende

d

cleara

nce G

Recommendedclearance H

Front of the chiller

Model

Dimensions

LSBLG/MCF R134a, FLOODED TYPE

Single head Dual heads

340 400 455 540 690 720 825 915 1000 1110 1200 1300 1385 1450

D(mm) 600 600 600 600 600 600 600 600 600 600 600 600 600 600

E(mm) 600 600 600 600 600 600 600 600 600 600 600 600 600 600

F(mm) 2000 2000 2000 2000 2000 2000 5000 5000 5000 5000 5000 5000 5000 5000

G(mm) 700 700 700 700 700 700 700 700 700 700 700 700 700 700

H(mm) 3500 3500 3500 3500 3500 3500 2000 2000 2000 2000 2000 2000 2000 2000

Physical Dimensions

Single head

L eav in g ch ille d w a te r

E n te rin g ch ille d w a te r

E n te r ing coo ling w a te r

Lea v ing co o lin g w a te r

AD

BE

G F H J C

Model A B C D E F G H J Chilled water pipe Cooling water pipe

LSBLG340/MCF1 3500 1400 1750 2790 1250 515 785 345 615 DN125 DN125

LSBLG400/MCF1 3500 1400 1800 2790 1250 515 785 345 615 DN125 DN125

LSBLG455/MCF1 3500 1400 1800 2790 1250 515 785 345 615 DN125 DN125

LSBLG540/MCF1 3600 1500 2000 2790 1350 475 775 350 650 DN150 DN150

LSBLG690/MCF1 3600 1500 2000 2790 1350 475 775 350 650 DN150 DN150

LSBLG720/MCF1 3600 1500 2000 2790 1350 475 775 350 650 DN150 DN150

Dual heads

AD

G F

BE

CJH

Model A B C D E F G H J Chilled water pipe Cooling water pipe

LSBLG825/MCF1 4500 1600 1900 3790 1250 540 840 370 670 DN150 DN150

LSBLG915/MCF1 4500 1600 1900 3790 1250 540 840 370 670 DN150 DN150

LSBLG1000/MCF1 4600 1700 2100 3790 1400 425 775 375 725 DN200 DN200

LSBLG1110/MCF1 4600 1700 2100 3790 1400 425 775 375 725 DN200 DN200

LSBLG1200/MCF1 4600 1700 2100 3790 1400 425 775 375 725 DN200 DN200

LSBLG1300/MCF1 4600 1700 2100 3790 1400 425 775 375 725 DN200 DN200

LSBLG1385/MCF1 4600 1700 2100 3790 1400 425 775 375 725 DN200 DN200

LSBLG1450/MCF1 4600 1700 2100 3790 1400 425 775 375 725 DN200 DN200

Vibration Isolation & Foundation

Typical Isolation

NOTES 1. Unit is in millimeter. 2. As a standard isolation package, Base plate, isolation pad and Level plates are supplied. 3. Foundation height is recommended for piping and drain.

Foundation Dimensions

D

E+5

00E

E vap C en tre L ine

C ond C en tre L ine

A

A

A -AR ubber P ad(δ 15 ) 200X200

C h ille r Leg

S tee l B ase P la te ( δ 1 0) 200X150 P rov ided by user

A nchor B o lt M 20X 400 P rovided by user

N u t M 20 P ro vided by user

G aske t 200 P rov ided by user

100

300

45°

150X 150

400

G rou t concretea fte r ch ille r in p lace

D +500

F

BRL

Fron t s ide o f ch ille r

A

B

D ra in d itch

Model

Dimension

LSBLG/MCF R134a, FLOODED TYPE(Single head and dual heads)

340 400 455 540 690 720 825 915 1000 1110 1200 1300 1385 1450

A(mm) 3490 3490 3490 3490 3490 3490 4490 4490 4490 4490 4490 4490 4490 4490

B(mm) 1950 1950 1950 2050 2050 2050 1950 1950 2100 2100 2100 2100 2100 2100

D(mm) 2790 2790 2790 2790 2790 2790 3790 3790 3790 3790 3790 3790 3790 3790

E(mm) 1250 1250 1250 1350 1350 1350 1250 1250 1400 1400 1400 1400 1400 1400

Chiller Leg

Anchor Bolt

Rubber Pad

Concrete Base

Steel Base Plate

Construction

MACHINE OUTLINE

Front View

Rear View

1 Electrical Control Box

2 Suction Cut-off Valve

3 Compressor

4 Discharge Cut-off Valve

5 External Oil Separator

6 Oil filter

7 Condenser Identification Nameplate

8 Condenser

9 Condenser Relief Valve

10 Venturi Tube

11 Refrigerant filter

12 Drain（for cooling water）

13 Compressor Nameplate

14 Capillary

15 Evaporator Relief Valve

16 Air Vent

17 Drain（for chilled water）

18 Evaporator

19 Liquid Refrigerant Line (EXV+Orifice)

20 Sight Glass

1

2 3

5

7 9 8 10 11 12

4

6

19 20

15

13 14

18

16

17

Typical piping-Water system Chilled/Cooling Water Piping

All piping should be installed independently in order to convey any stress and vibration to the chiller and have sufficient space for maintenance purpose.

Water flow switch is strongly required and should be installed on the straight line (5 times the pipe diameter) of outlet of Chilled/Cooling water.

It is recommended to install thermometer, pressure gauge to measure the unit operational condition.

Notes: The diagram is the recommended schematic diagram of water system, make flexible changes according to the actual construction.

Suggestion for energy conservation: 1. Choose the right pressure head for chilled water pump and cooling water pump.

Choose proper pipe diameter and water velocity in the pipe. Minimize the number of pipe joint, reducing pipe, manifold and valve to reduce unnecessary local

resistance loss. Choose proper water strainer (structure/meshes) and do periodic cleaning.

2. Recommend using variable frequency water pump which can reduce energy consumption by 30%-45%. 3. Recommend using water distributor, valves between floors or terminal SV to prevent chilled water circulating

in none-working terminals. 4. Do periodic cleaning for cooling tower and pipe system. 5. Choose the proper fresh air flow and layout for air-out and air return inlet to prevent short circuit of airflow. 6. Make appropriate modulation of chilled water inlet/outlet temperature and temperature difference according

to the local climate.

Wiring diagram Field wiring

LSBLG340MCF1—LSBLG720MCF1

LSBLG825MCF1—LSBLG1450MCF1

ELECTRICAL CONTROL POWER SUPPLY

Electrical data for choosing electric wire

Model Quantity of

comp. Power supply

Rated

current/A

Starting

current/A

Max. running

current/A

340/MCF1 1 380V-3P-50Hz 107.6 270 140

400/MCF1 1 380V-3P-50Hz 121.2 292 158

455/MCF1 1 380V-3P-50Hz 142.4 292 185

540/MCF1 1 380V-3P-50Hz 166.4 447 216

690/MCF1 1 380V-3P-50Hz 203.6 663 265

720/MCF1 1 380V-3P-50Hz 211.8 663 275

825/MCF1 2 380V-3P-50Hz 256.5 398 334

915/MCF1 2 380V-3P-50Hz 272.8 428 355

1000/MCF1 2 380V-3P-50Hz 298.1 596 388

1110/MCF1 2 380V-3P-50Hz 337.7 616 439

1200/MCF1 2 380V-3P-50Hz 353 654 459

1300/MCF1 2 380V-3P-50Hz 390.2 858 507

1385/MCF1 2 380V-3P-50Hz 409.2 868 532

1450/MCF1 2 380V-3P-50Hz 424.8 876 552

Typical Applications

○3

○2 ○1

○4

○5 ○6

1-Medical facilities 2- Government offices 3- Hotel

4- Factory 5- Traffic Engineering 6-Shopping mall

Selection Software Professional Selection Software makes product selection process much easier and more efficient than conventional manual selection. Simple operating interface and smart arithmetic can greatly improve the selection efficiency. The user just needs to provide several basic parameters, such as cooling capacity, fouling factor, pass number, power supply, etc. Then the computer will find out all the possible models for you to choose the best design. This software can be updated through the Internet easily. If you get some good advice, please feel free to tell us.

MCAC-STSM-2011-02

Chongqing Midea General Refrigeration

Equipment Co., Ltd.

Has received Quality management systems

ISO 9001 & Environmental management

system ISO 14001 certification

ID: 9105035139

The International Division Midea Air Conditioning and Refrigeration Sector Add: Midea headquarter building, No.6 Midea Avenue, Beijiao Town, Shunde District, Foshan City, Guangdong, P.R. China Postal code: 528311 Tel：+86-757-26338346 Fax: +86-757-26339337 http://www.midea.com http://www.mideaaircon.com

Note: The data in this book may be changed without notice for further improvement on quality and performance

a flooded screw chiller

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