Designed to performBuilt to last

RTUA 108 - 217 RTCA 108 - 216

TRANE: Number 1 in rotary compressors applications

©American Standard Inc. 1999

Since the introduction of RTWA,TRANE offers a complete range ofliquid chillers fitted with rotary com-pressors covering the cooling capa-city range from 50 up to 4000 kW.

For the largest cooling capacities,TRANE offers the centrifugal com-pressor liquid chillers. Thesemachines have an excellent reputa-tion for reliability . A survey pub-lished in the USA in 1988 revealedthat more than 90% of the centrifugalchillers installed during the 50 lastyears were still in operation.

For lower cooling capacities, TRANEhas introduced more recently, the 3-D® Scroll compressors and theHelirotor Screw compressors.

Despite these technologies still beingconsidered a novelty in some quar-ters, within TRANE this relates to

todays technology: for example the3-D® Scroll compressors introducedin 1989 have completely replaced thereciprocating compressors for coo-ling capacities up to 160 kW. For theupper range, the water-cooled Screwcompressor liquid chillers, seriesRTHA, introduced in 1988 is a verysuccesful product : with more than1500 machines installed every yearworlwide, TRANE can be consideredas the Number 1 in this area. TRANEhas also introduced a range of aircooled Screw compressor liquidchillers.

Whatever the type of technology, therotary compressors offer some veryspecific common benefits : superiorenergy efficiency and reliability com-bined with reduced sound and vibra-tion level being the most obviousones.

RTUA 108 - 217Helical rotary liquid chillersRTCA 108 - 216Remote air cooled condensers

• Nominal cooling capacity:190 to 600 kW (R22 - 50Hz)

• ”Adaptive Control™”

2 K15 CA 014 E

The RTUA offers in many areas acombination of the most advancedtechnologies available today:- Screw compressor, with stepless

capacity control and 5/7 lobesrotors profiles designed and paten-ted by TRANE.

- Advanced microprocessor based«Adaptive Control™» including PIDleaving chilled water temperaturecontrol and a serial communicationlink for easy integration into aBuilding Management System.

- Electronic expansion valve. Givessteadier operation, optimized eva-porator efficiency and improvedenergy efficiency with reducedcondensing pressure.

- High efficiency heat exchange sur-faces : energy efficiency combinedwith reduced surface area.

RTUA: A combination of the latesttechnological innovations in thefield of liquid chillers

RTUA: Designed to offer moreattractive benefits in all areas

For the specifier:

- High energy efficiency, less floorspace required: the unit can bemore easily integrated into an exis-ting plant room, which allows foran increase of the available coolingcapacity.

- Higher application flexibility: icestorage, multiple operating condi-tions.

- Reduced sound and vibrationslevels allowing installation in sensi-tive areas.

For the mechanical contractor:

- Compact design, reduced shippingweight: easier handling during sitetransportation.

For the operating contractor:

- State of the art motor protection:the unit control module permanent-ly senses the current of each phaseof the motor power supply as wellas the temperature of the motorwindings.

- «Adaptive Control™» anticipatesany operating problems: the controlmodule consequently takes correcti-ve actions to enable the chiller tostay within operating limits to gua-rantee trouble free operation evenunder critical conditions. The chillercan continue to operate at a redu-ced load under these critical condi-tions until normal operation can berestored whereas a standard chillerwould just stop as a fault.

- Sophisticated operator interface:the clear language display boardallows for a quick and precise

identification of the operating statusof the machine or of an operatingfault.

- Serial link allows for a remotemonitoring of the chiller.

For the owner:

- Superior energy efficiency reducingoperating costs.

- Increase chiller life and drasticallyreduced maintenance costs: thecompressors have been designed tooperate for the whole life of thechiller without any major mainte-nance operations.

- Steady and safe operation: thanksto the stepless capacity control, theelectronic expansion valve and thesophisticated control algorithms,the chiller can exactly match therequired cooling capacity and main-tain the chiller water outlet tempe-rature within a range of +/- 0.3°C ofthe setpoint.

- Serial communication link facility tostart and stop the chiller, modify thesetpoints or to limit the currentdrawn from a remote location.

3K15 CA 014 E

0 10 20 30 40 50 60 70 80 90 100

a

c

b

- Less critical components : only tworotating parts, reduced number ofcomponents and particulary of criti-cal parts (the total number of criti-cal components is on average30 times lower compared to a stan-dard reciprocating chiller).

- Rugged design : all potentially fra-gile components (suction and dis-charge valves, springs) have beenelimninated. The compressors arefitted with class 5 bearings designednot to be replaced during compres-sor life time.

- High precision machining : the veryprecise rotor tip tolerance (10 micro-meters) is achieved due to the mostadvanced machine tools availabletoday. TRANE is able to build screwcompressors with a reducedamount of leakage between thehigh and low pressure cavities. As aresult, the energy efficiency of thecompressor is considerablyimproved compared to the first gen-eration of screw compressors whichwere in some cases derived from aircompression technology.

- Rotary compressor : reduced soundand vibration level compared toreciprocating equipments. The over-all sound level is lower and further-more the shape of the sound spec-trum is different: the sound level isinferior in the low sequenciesbands.

- Proven Design through Testing and

Research : at TRANE, we must failcompressors in the Laboratory toensure they win not fail in the field.Without failures, there is no way tobe certain whether the final designis satisfactory potentially unreliable.The compressor accelerated life testis a proven method to induce fai-lure. This test is designed to over-stress an parts and quickly identifyany weak areas. The extreme testconditions far exceed actual fieldapplications. TRANE engineers failand redesign compressors until areliable product is assured. Ourleadership in helical rotary compre-ssor technology is recognizedworldwide. It is the basis for thesuccessful introduction of the relia-ble TRANE Screw compressor, rightfrom the start !

TRANE Helirotor Screw compressors:Superior energy efficiency and reliability

Better part load performance

The graph on the right compares thepart load efficiency of the TRANEHelirotor compressor and of a reci-procating compressor. Due to superi-or part load performance the TRANEHelirotor uses less energy annuallythan a typical reciprocating compre-ssor. C

.O.P

Nominal capacity (%)

a Reciprocating compressorb Efficiency gainc TRANE Helirotor compressor

4 K15 CA 014 E

When coupled with Trane «AdaptiveControl™» microprocessor, the elec-tronic expansion valve significantlyimproves part load performance ofthe RTUA chiller by minimizingsuperheat in the evaporator and allo-wing the chiller to run at reducedcondensing pressures.

Chillers which use conventional TXVmust run at higher head pressuresand consume more power at partload than necessary.

Additionally the electronic expansionvalve and its control allow much bet-ter control over dynamic load andhead changes. Under these condi-tions a conventional TXV may neverachieve control stability and ”hun-tings” and liquid slugging are com-mon.

Precise refrigerant flow

metering

The electronic expansion valve isactuated by a stepper motor. Theexact valve position is permanentlyknown by the Unit Control Module.

Quick response

To operate the valve from fully clo-sed to fully open position requiresless than 30 seconds. This is to com-pare with thermo-electric deviceswhich have no stable position andrequire up to several minutes to fullyclose.

Superior tightness

Because of the superior tightness ofthe electronic expansion valve whenfull closed the liquid line solenoidvalve is no more required.

It enables to further improve thereliability of the chiller by reducingthe total number of moving parts.

Electronic expansion valve

5K15 CA 014 E

Trouble-free operation

The water cooled series RTWA uti-lizes the most advanced micropro-cessor control issued from the latestdevelopment in micro-electronics.

Control and protection of chiller werethe two functions of previous chillercontrol design. «Adaptive Control™»keeps the chiller on line and makesthe control “intelligent”.

The «Adaptive Control™» means thesystem takes corrective action whenany of the control variablesapproaches a limit condition atwhich the protection function of pre-vious control schemes would nor-mally shut down the chiller.Corrective action is achieved throughcombined actions of compressor un-loader mechanism, electronic expan-sion valve modulation. Only whenthe control system has exhausted thecorrective actions it can take and theunit is still violating an operating lim-it, the unit will be shut down.

The control logic of the P.I.D. typebased on the leaving chilled watertemperature integrates the control ofvariables (current drawn by themotor, evaporating and condensingtemperature) maintains accurate con-trol, minimizes the drift from the set-point and provides better buildingcomfort.

Improved chiller and motor

protection

The control system integrates all thefunctions necessary to ensure safeoperation of the chiller in all applica-tions and duty conditions :

• System safeties, such as oil, water,refrigerant pressure and tempera-ture faults.

• Motor safeties. By monitoring themotor current on each of the3 phases, the control systemensures protection against :- Overload at start-up and in opera-

tion.- Phase loss/Power loss.- Phase unbalance or reversal.- Over/Under voltage.- Welded contactors.

If a fault occurs, one of over 90 indi-vidual diagnostic and operatingcodes will displayed directly on thecontrol module.

«Adaptive Control™»,

features summary

• Ensures safe operation of thechiller.

• Keeps chiller on line.

• Optimizes total chiller powerconsumption.

• Ensures total chiller reliability.

• Allows easy interface.

• Minimizes service expense.

Optional features

• Communication interface.

• External chilled water setpoint.

• External current limit setpoint.

• Ice making control.

• Chilled water temperature reset.

«Adaptive Control™»Trouble-free installation, start-upand operation.

6 K15 CA 014 E

Easier than ever to use

The microprocessor is equiped witha two-line, forty character ClearLanguage Display. The display showsover 90 operating and status points.The control panel will display themost current diagnostic messageand store the last 10 for more accu-rate diagnosis by Service personnel.Having the ability to diagnosis aproblem via the control display willlower the service expense, as well asthe downtime of the chiller.

Readibility

Local operator interface with the sys-tem is accomplished using the16 keys on the front of the ClearLanguage Display panel. The readoutscreen is a two line, 40 character liquid crystal with a backlight. Thebacklight allows the operator to readthe display in low light conditions.The depression of any key will activethe backlight.

Application flexibility

The UCM CLD is available with theoutput in six languages and eitherEnglish or metric units.

Operator interface

The Unit Control Module (UCM) ofthe RTUA offers several communica-tion levels which considerably sim-plify the implementation of a tele-monitoring of the chiller or its inte-gration in a Building ManagementSystem (BMS).

Telemonitoring through a

parallel link

Analog input and output ports allowchiller operation optimization or easychiller monitoring when the machineis not integrated in a BMS.

Remote running and alarm

contacts

The unit provides three single pole/double-throw contact closures toindicate whether : • a failure has occured,• the compressor is running,• the compressor is running at maxi-

mum capacity. This informationmay be used to authorize the startof an additional chiller.

External chilled water set-

point and current limit set-

point

The UCM allows the external settingindependent of the front panel set-point by one of the following threemeans :• a remote resistor (fixed or

adjustable),• a 2-10 VDC input,• a 4-20 mA input.In the same way, the motor currentcan be limited to optimize the totalenergy efficiency of the installation.

Integration in the Building

Management System

through the Serial link

The unit can be equipped uponrequest with a serial link communica-tion card. All the data and functionsavailable at the UCM front panel canbe transmitted or accessed throughthe serial link.

Data which can be read

Following parameters can be read bythe BMS through the serial link :• Entering leaving evaporator water

temperature.• Motor current.• Operating status : compressor

stopped or running, compressorrunning at full load or auto-limi-tation.

More than 100 data can be accessedor transmitted.

Orders which can be sent

to the chiller

The BMS can send following orders :• Compressor start and stop.• Motor current limit.• Chilled water setpoint reset.

Communication

7K15 CA 014 E

����

UCM-CLDThe diagram indicates the numerous variables that can be sensed by the UnitControl Module in order to ensure trouble free operation.

Refrigeration circuit

1 Compressor2 Evaporator3 Remote air cooled condenser

(with integral subcooler)4 Electronic expansion valve

Lubrification circuit

5 Oil separator6 Oil cooler7 Oil filter

Control circuit

a Compressor starterb Phase loss/imbalance, under/over voltage

protectionc Electronic expansion valve self diagnostic

and prepositionning, refrigerant flowmetering

d Refrigerant temperature entering the evaporator

e Refrigerant temperature leaving the evaporator

f Oil heatingg Oil circuit solenoid valveh Oil pressurei Compressor capacity controlj Motor winding temperaturek Water temperature entering the evaporatorl Water temperature leaving the evaporatorm Chilled water circuit flow (site wired

option)n Condenser refrigerant temperatureo Air flow controlp Ambient air temperature

Superior «Adaptive Control™»

Remote control panel

TRANE RTUA chiller is available withtwisted pair connection to a remotecontrol panel. Chiller operation canbe controlled similarly to the controlinterface on the chiller itself. Allthrough a twisted pair of wire unitcan be turned on or off, change thechilled water setpoint, and displayover 90 diagnostics conditions.

Remote control panel can be moun-ted so access to chiller information isjust step away and no need to gointo the chilled water plant.

8 K15 CA 014 E

RTCA air cooled condensers are

designed to be combined with

TRANE RTUA liquid chillers but

are also suitable for any other

application requiring remote air

cooled refrigerant condensers.

TRANE component integra-

tion means optimum selec-

tion, performance and com-

patibility, built to advanced

engineering standards.

Features

• V-coil arrangement : low profile,compact design.

• Choice of 4 fan speeds : 9.2, 11.2,12.3 and 15.2 rev/s to allow opti-mization of heat transfer and noiseemission requirements.

• Two-speed fans (option).• Integral subcooling circuits.

The RTCA condensers are suitablefor installation in refrigeration sys-tems with total heat rejection capaci-ties from 70 to 800 kW. The choicebetween three motor speeds permitsa unit to be selected for optimumperformance in relation to thedesired sound level. All RTCA con-densers feature energy-saving inte-gral subcooling circuits.

Subcooling of the liquid refrigerantincreases the net refrigeration effectof the system without increasing thecompressor power consumption.

Exceptionnally compact design,maximum selection flexibility andsimplified installation, the RTCA con-denser series minimizes installationcosts.

Subcooling

Subcooling of the condensed refri-gerant below its saturation tempera-ture increases the system refrigera-tion effect at constant compressorpower input and thus improves thesystem coefficient of performance by8 to 15 % at typical selection condi-tions.

When selecting the condenser, thesystem operating point without sub-cooling is to be determined first andthen the capacity obtained multipliedwith the applicable subcooling cor-rection factor in order to determinethe total available system refrige-ration effect. The selection of theevaporator must take into accountthe enthalpy increase due to the sub-cooling of the liquid refrigerant.

Subcooling also eliminates orreduces partial evaporation of liquidrefrigerant due to pressure drop orchange in elevation ahead of theexpansion valve. Gas in the liquidrefrigerant may lead to unsufficientfeeding of the evaporator, opera-tional problems and shortage of sys-tem capacity.

Air flow

The discharge air flow pattern ofcondensers selected with low fanspeed tends to favor hot air recircu-lation. Hot air recirculation increasesthe energy consumption of the sys-tem and may lead to high pressurenuisance cut-outs when operatingclose to the design ambient tempe-rature.

Very low fan speeds should thus beavoided whenever possible and thecondenser installed in such a waythat the air flow is not obstructed orrestricted in any manner.

Undivided responsability

TRANE was one of the first manu-facturers to offer large capacity aircooled systems and has accumu-lated considerable design, manu-facturing and field operating expe-rience.

The choice of a complete TRANEsystem, including the compressor,evaporator and the condenseroffers the designer, installer andowner the advantages of an opti-mized selection and undividedresponsability for the design, thequality and the operation of thecomplete system, backed by aleading supplier of the completerange of air conditioning systemsand components.

a Pressureb Specific enthalpyc Subcoolingd Increase in refrigeration effect

db

a

c

9K15 CA 014 E

The installation of a split systemoffers a good economic alternative tosatisfy the chilled water demand forcooling a building, particulary in thecase of new construction. At thesame time though, the installation ofan outdoor machine - on the roof orin a courtyard - makes it necessary totake account of the impact it willhave on the environment, especiallythe noise perceived by neighbours.More frequently than before, desi-gners and architects are now havingto address both local regulations anddemands to improve the environ-mental conditions with respect tonoise emanating from air condition-ning equipment. To meet these strin-gent sound specifications, TRANEdeveloped a new range of air cooledcondensers for outdoor installation.

Low speed fans

For the RTCA Low Noise fans withaerofoil section blades running at680 rpm have been selected to opti-mise the acoustical and mechanicalperformance and to provide highchiller efficiency without risk of theair being recirculated to the conden-ser coils.

RTUA/RTCA: Developed in order to providesuperior acoustical performance

10 K15 CA 014 E

Liquid line

Discharge line

Inverted trap

Trap

Trap

No elevation difference

Restrictions :

• Total distance between compo-nents should not exceed 60 m(actual) or 90 m (equivalent).

• Liquid line height must not exceed5 m from the base of the air cooledcondenser unit.

• Discharge line trap is recommen-ded leaving the oil separator if thedischarge piping runs for morethan 3 m (actual) horizontallyabove the RTUA unit.

RTCA condenser above the

RTUA compressor / chiller

Restrictions :

• Total distance between compo-nents should not exceed 60 m(actual) or 90 m (equivalent).

• Elevation difference greater than30 m (actual) will result in at leasta 2% efficiency decrease.

RTCA condenser below

RTUA compressor / chiller

Restrictions :

• Total distance between compo-nents should not exceed 60 m(actual) or 90 m (equivalent).

• Liquid line risers must not exceed5 m from the base of the air cooledcondenser.

Application examples

11K15 CA 014 E

Unit Leaving Condenser entering air temperature (˚C)

Size chilled 25 30 35

RTUA water Cooling Power Cooling Power Cooling Power

& temperature Cap. Input Cap. Input Cap. Input

RTCA (°C) (kW) (kW) (kW) (kW) (kW) (kW)

RTUA 108 5 203 60 188 65 174 70

& 7 214 62 199 97 184 72

RTCA 109 9 225 64 210 69 194 73

RTUA 109 5 228 65 213 71 198 77

& 7 242 67 226 73 211 78

RTCA 111 9 256 69 240 75 222 80

RTUA 110 5 283 74 265 80 247 87

& 7 299 76 280 83 262 89

RTCA 113 9 315 79 296 85 276 92

RTUA 207 5 198 56 186 61 173 66

& 7 211 58 198 63 185 67

RTCA 209 9 224 60 210 64 197 69

RTUA 209 5 233 64 218 69 204 74

& 7 248 66 234 71 219 76

RTCA 211 9 264 68 249 73 133 78

RTUA 211 5 299 81 282 87 265 93

& 7 318 83 300 90 284 95

RTCA 213 9 337 86 319 92 301 98

RTUA 212 5 340 98 321 105 301 112

& 7 363 101 342 108 322 115

RTCA 213 9 384 105 363 111 341 118

RTUA 213 5 413 118 383 128 354 138

& 7 437 122 406 132 375 141

RTCA 215 9 460 126 427 136 395 145

RTUA 215 5 464 129 433 140 401 152

& 7 493 133 160 144 427 155

RTCA 216 9 521 137 486 148 452 159

RTUA 216 5 498 146 465 158 432 170

& 7 528 151 493 163 457 174

RTCA 216 9 557 156 519 167 482 179

RTUA 217 5 575 147 538 159 501 172

& 7 609 152 570 164 532 175

2 RTCA 113 9 642 157 602 169 560 182(1) With D T evaporator: 6°C, fouling factor: 0.044 m2 K/kW, standard heat exchangers, electrical power supply 50Hz, refrigerant R22.

Performance data

12 K15 CA 014 E

Unit size RTUA 108 109 110

Nominal motor rating (kW) 98 113 131Compressor type CHHN 70 85 100Capacity modulation capability - - - Continuous: 20-100 % - - -Starting amps (1)(2) (A) 433 539 600Maximum amps (1)(3) (A) 154 177 207Oil heater (W) 150 150 150Control circuit (VA) 1600 1600 1600Evaporator type ES71 ES81 ES101Evaporator-water content (l) 145 134 118Operating charges

Refrigerant (kg) 15 16 17Oil (l) 14 14 14

Operating weight (4) (kg) 1630 1710 1710

Unit size RTUA 207 209 211 212 213 215 216 217

Nominal motor rating (kW) 49 56 65 76 98 113 113/131 131Compressor type CHHN 35 40 50 60 CHHB 70 85 85/100 100Capacity modulation capability - - - Continuous: 17-100 % - - - - - - Continuous: 10-100 % - - -Starting amps (1)(2) (A) 288 348 419 507 587 716 777 807Maximum amps (1)(3) (A) 158 180 212 256 308 354 384 414Oil heater (W) 150 150 150 150 150 150 150 150Control circuit (VA) 1600 1600 1600 1600 1600 1600 1600 1600Evaporator type ES70 ES80 ES100 ES120 ES140 ES170 ES170 ES200Evaporator-water content (l) 145 134 118 106 269 223 223 204Operating charges

Refrigerant (kg) 2 x 10 2 x 11 2 x 12 2 x 13 2 x 18 2 x 20 2 x 20 2 x 22Oil (l) 2 x 8 2 x 8 2 x 8 2 x 8 2 x 14 2 x 14 2 x 14 2 x 14

Operating weight (4) (kg) 1660 1670 1690 1710 2580 2785 2785 2815(1) 400V/50Hz/3Ph power supply.(2) With part winding start. One compressor at full load, the other one starting.(3) To be taken into account for the sizing of power cables.(4) With compressor sound enclosure, refrigerant and oil operating charge and heat exchanger water content.

Unit size RTCA 108 109 111 113 115 116 208 209 211 213 215 216

Number of circuits 1 1 1 1 1 1 2 2 2 2 2 2Number of fans 4 4 6 8 8 12 4 4 6 8 8 12Fan Diameter (mm) 762 762 762 762 762 762 762 762 762 762 762 762Standard version :

Fan speed (rev./mn) 915 915 915 915 915 915 915 915 915 915 915 915Fan motor size (kW) 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9Fan FLA 400/50/3 (A) 4,2 4,2 4,2 4,2 4,2 4,2 4,2 4,2 4,2 4,2 4,2 4,2

Low noise version :

Fan speed (rev./mn) 680 680 680 680 680 680 680 680 680 680 680 680Fan motor size (kW) 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8Fan FLA 400/50/3 (A) 2,4 2,4 2,4 2,4 2,4 2,4 2,4 2,4 2,4 2,4 2,4 2,4

R22 operating charge (kg) 22 26 36 44 52 72 2x11 2x13 2x18 2x22 2x26 2x36Operating weight (2) (kg) 810 890 1090 1535 1770 2050 810 890 1090 1535 1770 2050

(1) 400V/50Hz/3Ph power supply.(2) Weight with aluminium fins.

13K15 CA 014 E

General data

Unit size RTUA 108 109 110

Length A (mm) 2536 2536 2536

Width B (1) (mm) 860 860 860

B' (2) (mm) 1010 1010 1010

Height C (2) (mm) 1715 1715 1715

Clearance E (3) (mm) 2000 2000 2000

F (4) (mm) 800 800 800

Evaporator hydraulic connections - - - - - Flanges 5”/ DN125 / PN16 - - - - -

Electrical connection (mm) 370 x 200 370 x 200 370 x 200(1) With compressor sound enclosure and disconnect switch handle removed.(2) With compressor sound enclosure and disconnect switch handle mounted.(3) Clearance for retubing : can be on either end of the chiller(4) Clearance all around the unit in order to achieved usual maintenance operations.

Recommended space enveloppe

RTUA 108 to 110 - Dimensions

14 K15 CA 014 E

C

Unit size RTUA 207 209 211 212

Length A (mm) 2653 2653 2653 2653

Width B (1) (mm) 860 860 860 860

B' (2) (mm) 1010 1010 1010 1010

Height C (2) (mm) 1715 1715 1715 1715

Clearance E (3) (mm) 2000 2000 2000 2000

F (4) (mm) 800 800 800 800

Evaporator Hydraulic connections - - - - - Flanges 5”/ DN125 / PN16 - - - - -

Electrical connection (mm) 370 x 200 370 x 200 370 x 200 370 x 200(1) With compressor sound enclosure and disconnect switch handle removed.(2) With compressor sound enclosure and disconnect switch handle mounted.(3) Clearance for retubing : can be on either end of the chiller(4) Clearance all around the unit in order to achieved usual maintenance operations.

Recommended space enveloppe

RTUA 207 to 212 - Dimensions

15K15 CA 014 E

Unit size RTUA 213 215 216 217

Length A (mm) 3834 3834 3834 3834

Width B (1) (mm) 885 885 885 885

B' (2) (mm) 1040 1040 1040 1040

Height C (2) (mm) 1813 1813 1813 1813

Clearance E (3) (mm) 3000 3000 3000 3000

F (4) (mm) 800 800 800 800

Evaporator Hydraulic connections - - - - - Flanges 6”/ DN150 / PN16 - - - - -

Electrical connection (mm) 370 x 200 370 x 200 370 x 200 370 x 200(1) With compressor sound enclosure and disconnect switch handle removed.(2) With compressor sound enclosure and disconnect switch handle mounted.(3) Clearance for retubing : can be on either end of the chiller(4) Clearance all around the unit in order to achieved usual maintenance operations.

Recommended space enveloppe

RTUA 213 to 217 - Dimensions

16 K15 CA 014 E

Model Length Width Height Hot gas Liquid

RTCA A B C D connection (1) connection (1)

108-109-1112840 2140 1550 - Ø 1”5/8 Ø 1”1/8208-209-211

113-213 4580 2140 1550 2290 Ø 1"5/8 Ø 1"1/8

115-1165420 2140 1550 2710 Ø 1"5/8 Ø 1"1/8215-216

(1) Sizes 108 to 211 : 2 each hot gas and liquid line connections (2 coils).Sizes 113 to 216 : 4 each hot gas and liquid line connections (4 coils).

(2) Recommended clearance (coil sides) = 1200 mm. Between two condensers = 2400 mm, other sides 800 mm.Contact Trane for more detailed application information.

RTCA Dimensions

17K15 CA 014 E

4 5 6 7 8 9 10 40 5015 20 30

2

3

4

5

10

15

98

6

7

20

30

40

50

1009080

60

70

150

200

ES 1

00 -

RTU

A 21

0 ES

101

RTU

A 11

0

ES 1

40 -

RTU

A 21

3

ES 1

70 -

RTU

A 21

5/21

6

ES 2

00 -

RTU

A 21

7

ES 8

0 - R

TUA

209

ES 8

1 - R

TUA

109

ES 7

0 - R

TUA

207

ES 7

1 - R

TUA

108

ES 1

20 -

RTU

A 21

2

Evaporator

Wat

er s

ide

pre

ssu

re d

rop

(kP

a)

Water flow rate (l/s)

Water side pressure drop

18 K15 CA 014 E

Compressor liquid chiller, seriesRTUA fitted with semi-hermeticdirect drive screw compressor, shelland tube evaporator, microprocessorbased «Adaptive Control™» module,factory mounted starter panel.

General construction

Welded evaporator assembly fittedon a structural steel profiles frame.

Compressor supporting platedesigned to allow installation of thecompressor sound enclosure on site.

Double door electrical panel.

Compressors and lubrica-

tion oil system

One or two semi-hermetic, accessibledirect drive, 2950 rpm dual screwcompressor with:- Capacity control slide valve.- Pressure lubricated, class 5 rolling

element bearing groups support therotor assembly.

- Squirrel cage induction motor,refrigerant suction gas cooled andhermetically sealed.

Oil separator, oil cooler and filtrationdevices are provided separate fromthe compressor. Check valves in thecompressor discharge and lube oilsystem and a solenoid valve in thelube system are provided.

Evaporator

Shell and tube evaporator. Carbonsteel shell plates and tube sheets.Tubes sheets are drilled reamed andgrooved to accomodate tubes.Individually replacable tubes,mechanically expanded into tubesheets and fastened into interme-diate tube supports made of plasticHeaders of high strength cast steelbolted to the tube sheets. Self ener-gizing type gaskets requiring lowbolt torque.

Direct expansion type evaporator.Factory insulated with 19 mmArmaflex type foam. internally finned5/8 inch diameter tubes. Maximumoperating pressure: water side andrefrigerant side = 1.4 MPa.

Refrigerant circuit

Each circuit includes: electronicexpansion valve minimizing evapo-rator superheat, removable core filterdrier.

Control panel

All unit controls are housed in awatertight enclosure. Removableplate on the top of the enclosure toallow customer connection of powerwiring and remote interlocks.

Microcomputer control provides allcontrol functions including start-upand shut down, leaving chilled watertemperature control, compressor andexpansion valve modulation, antire-cycle logic and load limiting.

«Adaptive Control™» microprocessorprevents unit shutdown due to ab-normal operating conditions associ-ated with low refrigerant tempera-ture, high condensing temperatureand motor overload.

Unit protective functions include lossof chilled water flow, evaporatorfreeze protection, low or high refri-gerant pressure, reverse rotation,compressor starting and runningover current, phase loss, phaseimbalance, phase reversal and lossof oil fow.

The Clear Language Display (CLD)eliminates coded informations.Information available with the«Adaptive Control™» microprocessorincludes : entering and leaving eva-porator water temperatures, refri-gerant temperatures and pressures,compressor suction temperature,

compressor start and running hours,chilled water setpoint, over 90 diag-nostic and operating conditions.

Starter panel

Part winding starters. TypicallyTRANE helirotor screw compressorare up to full speed in less than onesecond.

Rigging

4 liftings lugs are provided on theunit base frame.

Option and accessories

• Ice making module,• Communication interface/Remote

control display board,• Ammeter-voltmeter,• Compressor sound enclosure,• Disconnect switch,• Pressure gauges.

Factory run tests

Pressure test on each individualcomponent (before assembly) and onthe refrigeration circuit (when fullyassembled).

Shipment

All units ship on a wooden skid withseparated oil charge and nitrogenholding charge.

Quality assurance

The Quality Management Systemapplied by TRANE has been subjectto independent third party assesse-ment and approval to ISO 9001. Theproducts described in this catalogueare designed, manufactured and tes-ted in accordance with the approvedsystem requirements as described inthe Trane Quality Manual.

RTUA Mechanical specifications

19K15 CA 014 E

K15 CA 014 E - 0999

Supersedes K15 CA 014 - 1098

Literature stocking location : Europe

Trane reserves the right to alter any information without prior notice.

Société Trane Route de ChamagneF - 88130 CharmesFrance

http : // www.trane.com

An American Standard CompanySociété Trane - Société Anonyme au capital de 41 500 000 F - Siège Social : 1, rue des Amériques - 88190 Golbey - France -

Siret 306 050 188-00011 - RCS Epinal B 306 050 188 Numéro d'identification taxe intracommunautaire : FR 83 306050188

TRANE series RTCA air cooled refri-gerant condensers for outdoor instal-lation, consisting of:

Frame

Bolted frame assembly of steel pro-files.

Profiles and panels of galvanizedsteel have a corrosion resistent finishof polyurethane paint.

Condenser coils

Coils in a V shaped arrangement.Integral subcooler.

Aluminium fins mechanically blon-ded to internally finned seamlesscopper tubing.Condensing coils are leak tested at35 Mpa prior to assembly, dehy-drated and hermetically sealed witha mitrogen holding charge.

Outdoor air temperature sensor andsaturated condensing refrigeranttemperature sensor for each circuitare factory installed.

Fans

Axial fans, each with 6 blades ofaerofoil section, moulded fromblack, ultra violet stabilized, glassfiber reinforced polypropylene, withan aluminium hub and clamp-plate.All rotating aluminium componentsare X-ray tested prior to machining.Balanced according to BS6861PART 1 1987 (ISO 1940 - 1986).

Motors

Three phase, fully enclosed fanmotors, permanently lubricated, pro-tection class IP 55. Nominal motorspeed 915 rpm (Standard version),680 rpm (Low Noise version).

All motors can be reconnected to anapprox. 20% lower speed.

Starter panel

The unit mounted starter panel shallbe to class IP 55 protection. Thepanel shall contain fan motor star-ters, overloads and disconnect switch.

Options

• Copper fin condenser coil,

• Started panel, two speed, unit mouted, including starters, over-loads and disconnnect switch.Suitable for low ambient head pres-sure control and fan night noise setback.

Quality assurance

Product designed, manufactured andtested under TRANE quality assuran-ce system approved to ISO 9001.

RTCA Mechanical specifications