Rthd Catalog Rlc Prc020 En

Series R™ Helical RotaryLiquid Chillers

Model RTHD

175-450 Tons (60 Hz)

125-450 Tons (50 Hz)

Built for Industrial and Commercial Applications

RLC-PRC020-ENAugust 2004

RLC-PRC020-EN© 2004 American Standard Inc. All rights reserved.

Introduction

To meet a wide range of applications inthe medium-tonnage, water-cooledmarket, Trane is proud to introduce themodel RTHD helical rotary liquid chiller.The introduction of this next-generationchiller an exciting step forward inapplication versatility, ease ofinstallation, control precision, reliability,energy-efficiency, and operational cost-effectiveness. The new RTHD chiller isdesigned to deliver proven Series Rperformance, plus all the benefits of anadvanced heat transfer design and alow-speed, direct-drive compressor.

Important Design Advancesand New Features

Major design advances include:• Higher full-load energy efficiencyreduces both operating and life-cyclecosts.

• CH530 controls enable:- scrolling access to inputs and

operating information via the LCDtouch-screen display;

- freedom from interoperabilityconcerns with LonMarkcommunications;

- job-specific communication optionsthat allow greater reporting flexibility.

• Improved startup temperaturecapabilities and reduced sensitivity tocondenser water temperatures alleviatethe most common startup concerns.

• Removed Liquid Vapor Separator,providing lighter unit weight andsimplified refrigerant piping, for lessexpensive handling, separation, andinstallation.

The industrial-grade design of the SeriesR helical rotary chiller is ideal for bothindustrial and commercial markets, inapplications such as office buildings,hospitals, schools, retail buildings, andindustrial facilities. The linear unloadingcompressor, wide operating temperaturerange, advanced controls, electronicexpansion valve, short anti-recycletimers, and industry-leading efficienciesmean that this latest Trane Series Rchiller is the perfect choice for tighttemperature control in almost anyapplication temperatures, and underwidely varying loads.

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Contents

Introduction

Features and Benefits

Options

Display

Application Considerations

Selection Procedure

Model Nomenclature

General Data

Electrical Data and Connections

Dimensions and Weights

Mechanical Specifications

Conversion Table

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4

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28

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Features andBenefits

Applications in this catalog specificallyexcluded from the ARI certificationprogram are:• Low temperature applications,including ice storage

• Glycol• 50Hz units below 200 nominal tons

Application Versatility and HighPerformance• Screw compressor technology and theelectronic expansion valve providereliable performance in an expandedrange of operating temperatures.

• Tight water temperature controlextends to operation of multiple chillersin parallel or series configurations,offering further system design flexibilityfor maximum efficiency.

• Advanced design enables chilled watertemperature control to +/- 0.5°F (.28°C)for flow changes up to 10 percent perminute, plus handling of flow changesup to 30 percent per minute for comfortcooling.

• Two-minute stop-to-start and five-minute start-to-start anti-recycle timerallows tight chilled water temperaturecontrol in constant or transient low-load applications.

• LonMark communications capabilityprovides excellent, trouble-freeinteroperability.

• Generic Building Automation Systempoints are available for easy access tooperational information.

• Extensive information on professionaldesign selection and layout is availablein a simple, highly readable electronicformat.

• Standard model RTHD configurationsare in stock and available for immediatedelivery, and Trane offers the fastestship cycles in the industry for built-to-order units.

• Industrial / Low Temperature ProcessCooling – Excellent operatingtemperature range and precise controlcapabilities enable tight control withsingle chiller or series configuration.

• Ice/Thermal Storage – Specifiers andoperators benefit from dual setpointcontrol and industry-leadingtemperature, efficiency, and controlcapabilities, plus outstanding supportthrough partnership with Calmac, astrong Trane partner providing proveninstallation examples, templates, andreferences that minimize design timeand energy costs.

• Heat Recovery – Maximum condensertemperature exceeds those of previoustechnologies, providing hot water andtight control that minimizes operatingcosts for the chilled water plant andboiler/hot water heater, and consistentdehumidification.

Simple, Economical Installation• Compact size makes the model RTHD

well suited for the retrofit andreplacement market.

• All units fit through standard double-width doors.

• Bolt-together construction makes forfast, easy unit disassembly.

• Small RTHD footprint saves valuableequipment room space and alleviatesaccess concerns for most retrofit jobs.

• Lightweight design simplifies riggingrequirements, further reducinginstallation time requirements andcosts.

• Full factory refrigerant or nitrogen andoil charges reduce required field labor,materials, and installation cost.

• Only evaporator and condenser waterpiping is required; no starter watercooling (with its associated safetyconcerns) or field piping is necessary.

• Oil cooler and purge systemconnections have been eliminated.

• Simple power connection simplifiesoverall installation.

• Standard unit-mounted starter forWye-Delta and Solid State eliminatesadditional jobsite installationconsiderations and labor requirements.

• Trane has conducted extensive factorytesting, and also offers options for in-person and/or documented systemperformance verification.

• CH530 controls easily interface withTracer Summit™ building automationsystems through single twisted-pairwire.

PuebloBusiness Unit

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Features andBenefits

State-of-the-Art, Precision Control• Microprocessor-based CH530 controlsmonitor and maintain optimaloperation of the chiller and itsassociated sensors, actuators, relays,and switches, all of which are factory-assembled and extensively tested.

• Easy interface with computers hostingTracer Summit™ building automation/energy management systems allowsthe operator to efficiently optimizecomfort system performance andminimize operating costs.

• PID (proportional integral derivative)control strategy ensures stable, efficientchilled water temperature control,maintaining +/- 1°F (0.56°C) control byproactively reacting to instantaneousload changes of up to 50 percent.

• Adaptive Control™ attempts to maintainchiller operation under adverseconditions, when many other chillersmight simply shut down.

• Easy-to-use operator interface displaysall operating and safety messages, withcomplete diagnostics information, on ahighly readable panel with a scrollingtouch-screen display.

• The RTHD features a complete range ofchiller safety controls.

• Over 120 diagnostic and operatingpoints are available, with standarddisplays including chiller current draw,condenser pressure, and evaporatorpressure.

Reliability and Ease of Maintenance• Direct drive, low-speed compressor – asimple design with only three movingparts – provides maximum efficiency,high reliability, and low maintenancerequirements.

• Electronic expansion valve, with fewermoving parts than alternative valvedesigns, offers highly reliableoperation.

• Suction gas-cooled motor staysuniformly cool at lower temperaturesfor longer motor life.

• The Trane helical rotary compressor isa proven design resulting from years ofresearch and thousands of test hours,including extensive testing underextraordinarily severe operatingconditions.

• Trane is the world’s largestmanufacturer of large helical rotarycompressors, with tens of thousands ofcommercial and industrial installationsworldwide demonstrating a reliabilityrate of greater than 99 percent in thefirst year of operation.

Operating and Life CycleCost-Effectiveness• Electronic expansion valve enablesexceptionally tight temperature controland extremely low superheat, resultingin more efficient full-load and part-loadoperation than previously available.

• Precise compressor rotor tip clearanceensures optimal efficiency.

• Condenser and evaporator tubes usethe latest heat transfer technology forincreased efficiency.

• The RTHD includes standard electricaldemand limiting.

• Chilled water reset based on returnwater temperature is standard.

• High compressor lift capabilities andtight chilled water temperature controlallow highly efficient system designwith minimal operational concerns.

Design capabilities include:• variable primary flow;• series chiller arrangements forevaporator and/or condenser;

• low evaporator and condenser flow.

RLC-PRC020-EN6

Options

Model RTHD Options

InsulationAll low temperature surfaces are coveredwith factory installed 3/4 inch (19.05 mm)Armaflex II or equal (k=0.28) insulation,including the evaporator and waterboxes, suction line, and motor housing.3/8" foam insulation is used on the liquidlevel sensor and gas pump assembly,including piping.

Low-Temperature EvaporatorAddition of an oil cooler to the oil circuitenables evaporator operation down tominimum leaving water temperature of10°F (-12.2°C).

High-Temperature CondenserAddition of an oil cooler to the oil circuitenables condenser operation up tomaximum leaving water temperature of114°F (45.6°C).

Smooth-Bore Condenser TubesSmooth-bore copper or premium cupro-nickel condenser tubes, 3/4" (19.05 mm)in diameter with .035" (0.889 mm) wallthickness, are available for high foulingwater applications.

Refrigerant Isolation ValvesFactory-installed condenser inlet andoutlet refrigerant valves allow isolationof the full refrigerant charge in thecondenser while servicing the chiller.

Marine Water BoxesAddition of marine water boxes for thecondenser allows tube cleaning withoutwater pipe interference.

300 psig Evaporator and CondenserWater BoxesWater boxes are designed for 300 psigmaximum waterside working pressure,and grooved pipe water connections areprovided for ease of installation.

Tracer Summit CommunicationsLink to factory-installed, testedcommunication board, via singletwisted-pair wiring, adds Tracer Summitcommunications to the system.

LonTalk LCI-C InterfaceLonTalk (LCI-C) communicationscapabilities are available, withcommunication link via single twisted-pair wiring to factory-installed, testedcommunication board.

External Chilled Water SetpointExternal Chilled Water Setpoint iscommunicated to a factory-installed,tested communication board through a2-10Vdc or 4-20mA signal.

External Current LimitingExternal Current Limit Setpoint iscommunicated to a factory-installed,tested communication board through a2-10Vdc or 4-20mA signal.

External Base LoadingExternal Base Loading is communicatedto a factory-installed and testedcommunication board through a2-10Vdc or 4-20mA signal.

Ice Making ControlControls and safeties allow operationwith brine temperatures down to 20°F(-6.7°C) , and dual setpoints enable bothice making and daytime comfort cooling.

Programmable RelaysDefault-set, factory-installed,programmable relays allow the operatorto select four relay outputs from a list ofeight. Available relays are: Alarm-Latching, Alarm-Auto Reset, GeneralAlarm, Warning, Chiller Limit Mode,Compressor Running, Head PressureRelief Request, and Tracer Control.

Chilled Water Reset – Outdoor AirTemperatureControls, sensors, and safeties allowreset of chilled water temperature, basedon temperature signal, during periods oflow outdoor air temperature (chilledwater reset based on return chilled watertemperature is standard).

Condenser-Regulating Valve ControlChiller applies a Proportional IntegrativeControl (PID) algorithm to control waterregulating valve via 0-10Vdc signal.

Percent of Full Run Load Amps OutputControl system indicates the activechiller percent of full run load amps,based on a 0-10Vdc signal.

Condenser Pressure OutputControl system indicates chillerdifferential pressure or condenserpressure, based on a 0-10Vdc signal.

Refrigerant Monitor InputControl system indicates refrigerantmonitor status of 0-100 or 0-1000 ppm(user selectable), based on a 2-10Vdc /4-20 mA signal.

Solid State StarterSolid State Starter is unit-mounted witha NEMA 1 gasketed enclosure. To extendstarter life, contactors bypass currentfrom the silicon control rectifiers (SCRs)after startup.

Under/Over-Voltage ProtectionUnit receives protection againstvariations in voltage (current lag andspike protection is standard).

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Main Power DisconnectOptions:

Non-fused DisconnectA UL-approved non-fused molded casedisconnect switch, factory pre-wired withterminal block power connections andequipped with a lockable externaloperator handle, is available todisconnect the chiller from main power.

Standard Interrupting Capacity CircuitBreakerA UL-approved standard interruptingmolded case capacity circuit breaker,factory pre-wired with terminal blockpower connections and equipped with alockable external operator handle, isavailable to disconnect the chiller frommain power.

High Interrupting Capacity CircuitBreakerA UL-approved high interruptingmolded case capacity circuit breaker,factory pre-wired with terminal blockpower connections and equipped with alockable external operator handle, isavailable to disconnect the chiller frommain power.

Ground Fault Circuit BreakerA UL-approved standard interruptingmolded case capacity circuit breakerwith ground fault interrupting capability,factory pre-wired with terminal blockconnections and equipped with alockable external operator handle, isavailable to disconnect the chiller frommain power.

Options

More Options:

2-Way Condenser Water Regulating ValveFor water regulation, a field-installed,2-way butterfly-type (lug-style) valve,with integral electrical operator andfactory-mounted valve actuator, isavailable. The single-phase, reversiblemotor can be factory-wired for 115 VAC,60 Hz or 220 VAC, 50 Hz; the 2-way valveis field-wired and controlled by thechiller regulating valve control output;valves are available in 6" and 8" (152.4and 203.2 mm) sizes.

Nitrogen ChargeUnit is shipped with a nitrogen holdingcharge in lieu of refrigerant.

Seal Kit for ReassemblyIdeal for situations when the bolt-together construction of the RTHD willbe separated for installation, this seal kitprovides replacement gaskets and ringsfor reassembly.

Performance and Witness TestsARI-certified RTHD Performance andWitness Tests are available, based onrequested operating points, to certifychiller performance before delivery.

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LCD Touch-Screen Displaywith Multi-Language Support

The standard DynaView displayprovided with the CH530 control panelfeatures an LCD touch-screen, allowingaccess to all operational inputs andoutputs. This display supports elevenlanguages: English, Chinese, Dutch,French, German, Italian, Japanese,Korean, Portugese, Spanish and Thai.

Additional Display Features Include:• LCD touch-screen with LEDbacklighting, for scrolling access toinput and output operating information

• Weather-proof enclosure for reliableoperation in non-standard indoorenvironments

• Spin value buttons to allowcontinuously variable setpoints whenapplicable

• Radio and action buttons for easy, one-time actions and settings

• Single-screen, folder/tab-style displayof all available information onindividual components (evaporator,condenser, compressor, etc.)

• Automatic and immediate stopcapabilities for standard or immediatemanual shutdown

• Manual override indication• Password entry/lockout system toenable or disable display

Display

• Fast, easy access to available chillerdata in tabbed format, including:— Modes of operation, including

normal cooling and icemaking— Water temperatures and setpoints— Loading and limiting status and

setpoints— Average line current— Outdoor air temperature— Start/stop differential timers— Auto/Manual mode for EXV, slide

valve, and head pressure control— Pump status and override— Chilled water reset, start point, ratio,

and outdoor start point— External setpoints, including:

- chilled water- current limit- ice building- base loading

— Display specifics, including:- date- format- time- display lockout- display units- language setting- Reports, listed on a single tabbed

screen for easy access, including:• ASHRAE, containing all guideline3 report information

• Evaporator• Condenser• Compressor

— Evaporator, condenser, andcompressor reports containing alloperational information onindividual components, including:- Water and air temperatures- Refrigerant levels, temperatures,

and approach- Oil pressure- Flow switch status- EXV position- Head pressure control command- Compressor starts and run-time- Line phase percent RLA, amps, and

volts— Alarm and diagnostic information,

including:- Flashing alarms with touch-screen

button for immediate address ofalarm condition

- Scrollable list of last ten activediagnostics

- Specific information on applicablediagnostic from list of over one-hundred

- Automatic or manual resettingdiagnostic types

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Condenser Water TemperaturesReduced sensitivity to condenser waterstartup temperatures is one majorenhancement in the newest-generationwater-cooled Series R chiller. With themodel RTHD chiller, a condenser watercontrol method is necessary only if theunit starts with entering watertemperatures below 55°F (12.8°C), orbetween 45°F (7.2°C) and 55°F (12.8°C),when a temperature increase of 1°F(0.56°C) per minute to 55°F (12.8°) is notpossible.

When the application requires startuptemperatures below the prescribedminimums, a variety of options areavailable. To control a 2-way or 3-wayvalve, Trane offers a CondenserRegulating Valve Control option for theCH530 controls. This option enables theCH530 controls to send a signal foropening and closing the valve asnecessary to maintain chiller differentialpressure. The 2-way valves are availableas a ship-with option. Tower bypass isalso a valid control method if the chillertemperature requirements can bemaintained.

Trane Series R chillers start and operatesuccessfully and reliably over a range ofload conditions with controlled enteringcondenser water temperature. Reducingthe condenser water temperature is aneffective method of lowering chiller

ApplicationConsiderations

power input required, but the idealtemperature for optimizing total systempower consumption will depend on theoverall system dynamics. From a systemperspective, some improvements inchiller efficiency may be offset by theincreased tower fan and pumping costsrequired to achieve the lower towertemperatures. Contact your local Tranesystems solution provider for moreinformation on optimizing systemperformance.

The minimum acceptable refrigerantpressure differential between condenserand evaporator is 23 psid. The chillercontrol system will attempt to obtain andmaintain this differential at startup, butfor continuous operation a designshould maintain a 25°F (13.9°C)differential from evaporator leavingwater temperature to condenser leavingwater temperature.

Variable Evaporator Flow and ShortEvaporator Water LoopsVariable evaporator flow is an energy-saving design strategy which has quicklygained acceptance as advances in chillerand controls technology have made itpossible. With its linear unloadingcompressor design and advanced CH530controls, the RTHD has excellentcapability to maintain leaving watertemperature control within +/-0.5°F(0.28°C) , even for systems with variableevaporator flow and small chilled watervolumes.

Some basic rules should be followedwhenever using these system designand operational savings methods withthe RTHD. The proper location of thechilled water temperature control sensoris in the supply (outlet) water. Thislocation allows the building to act as abuffer, and it assures a slowly changingreturn water temperature. If there isinsufficient water volume in the systemto provide an adequate buffer,temperature control can be lost,resulting in erratic system operation andexcessive compressor cycling. To ensureconsistent operation and tighttemperature control, the chilled waterloop should be at least two minutes. Ifthis recommendation cannot befollowed, and tight leaving watertemperature control is necessary, astorage tank or larger header pipeshould be installed to increase thevolume of water in the system.

For variable primary flow applications,the rate of chilled water flow changeshould not exceed 10 percent of designper minute to maintain +/-0.5°F (0.28°C)leaving evaporator temperature control.For applications in which system energysavings is most important and tighttemperature control is classified as+/-2°F (1.1°C), up to 30 percent changesin flow per minute are possible. Flowrates should be maintained between theminimum and maximum allowed forany particular chiller configuration.

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Series Chiller ArrangementsAnother energy-saving strategy is todesign the system around chillersarranged in series, on the evaporator,condenser, or both. The actual savingspossible with such strategies dependson the application dynamics and shouldbe researched by consulting your TraneSystems Solutions Representative andapplying the Trane System Analyzerprogram. It is possible to operate a pairof chillers more efficiently in a serieschiller arrangement than in a parallelarrangement. It is also possible toachieve higher entering-to-leaving chillerdifferentials, which may, in turn, providethe opportunity for lower chilled waterdesign temperature, lower design flow,and resulting installation and operationalcost savings. The Trane screwcompressor also has excellentcapabilities for “lift,” which affords anopportunity for savings on theevaporator and condenser water loops.

ApplicationConsiderations

Like series arrangements on theevaporator, series arrangements on thecondenser may enable savings. Thisapproach may allow reductions in pumpand tower installation and operatingcosts. Maximizing system efficiencyrequires that the designer balanceperformance considerations for allsystem components; the best approachmay or may not involve multiple chillers,or series arrangement of the evaporatorsand/or condensers. This ideal balance ofdesign integrity with installation andoperating cost considerations can alsobe obtained by consulting a Tranerepresentative and applying the TraneSystem Analyzer program.

Water TreatmentThe use of untreated or improperlytreated water in chillers may result inscaling, erosion, corrosion, and algae orslime buildup. It is recommended thatthe services of a qualified watertreatment specialist be engaged todetermine what treatment, if any, isadvisable. Trane assumes noresponsibility for the results of usinguntreated or improperly treated water.

Water PumpsWhere noise limitation and vibration-freeoperation are important, Trane stronglyencourages the use of 1750-rpm (60 Hz),1450-rpm (50 Hz) pumps. Specifying orusing 3600-rpm (60 Hz), 3000-rpm (50 Hz)condenser water and chilled waterpumps must be avoided, because suchpumps may operate with objectionablelevels of noise and vibration. In addition,a low frequency beat may occur due tothe slight difference in operating rpmbetween 3600-rpm (60 Hz), 3000-rpm(50 Hz) water pumps and Series R chillermotors. Important Note: The chilledwater pump must not be used to stopthe chiller.

Acoustic ConsiderationsFor chiller sound ratings, installation tips,and considerations on chiller location,pipe isolation, etc., refer to the TraneWater-Cooled Series R Chillers SoundRatings and Installation Guide. Using theinformation provided in this bulletin,contact a certified sound consultant toaid in proper mechanical room designand treatment.

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SelectionProcedure

Trane Series R chiller performance israted in accordance with the ARIStandard 550/590-1998 CertificationProgram. Chiller selection assistance andperformance information can beobtained by using the Series R chillerselection program, available throughlocal Trane sales offices.

PerformanceThe computerized Series R chillerselection program provides performancedata for each possible chiller selection atboth full-load and part-load designpoints, as required.

It should be noted that changing thenumber of water passes or the waterflow rates will generally alter theperformance of a particular chiller. Toattain maximum benefit from the widerange of chiller models and optionsavailable, designers are encouraged tofirst develop performance specificationsand then use the chiller selectionprogram to optimize all selections. Thiswill help ensure selection of thecompressor-evaporator-condensercombination that most closely meets thejob requirements. To optimize systemperformance, all selections should alsobe balanced with other systemcomponents.

Fouling FactorsARI Standard 550 includes a definition ofclean tube fouling. The recommendedstandard fouling adjustments are 0.0001hr-sq ft-deg F/Btu (0.044 sq m-deg C/kW)for the evaporator and 0.00025 hr-sq ftdeg F/Btu (0.0176 sq m-deg C/kW) for thecondenser, from an increment of 0.0000“clean.” Chiller specifications should bedeveloped using the most currentstandard fouling factors.

Unit Performance with Fluid MediaOther Than WaterSeries R chillers can be provided with awide variety of fluid media other thanwater, including ethylene glycol andpropylene glycol— in the evaporator,condenser or both. Chillers using mediaother than water are excluded from theARI 550/590-98 Certification Program,but are rated in accordance with ARIStandard 550/590-98. Trane factoryperformance tests are only performedwith water as the cooling and heat-rejection media. When consideringselection of media other than water,contact the local Trane sales office forchiller selections and factoryperformance testing information.

Fluid media other than water lowers theheat transfer coefficient, and thereforereduces chiller performance. In general,it is good practice to hold the percentglycol added to within the minimumallowed by the Trane selection program,based on either (a) unit operatingtemperatures, or (b) the operatingtemperatures the evaporator orcondenser water will experience underits full range of conditions. Adding moreglycol than required for the specificapplication is equivalent to selecting aless efficient chiller. Lower-viscosityglycols such as ethylene will have lessadverse impact on chiller performancethan higher-viscosity glycols such aspropylene.

Dimensional DrawingsDimensional drawings provided forselection purposes illustrate overallmeasurements of the unit. Therecommended service clearances arethose required to easily service theSeries R chiller.

All catalog dimensional drawings aresubject to change, and current submittaldrawings should be referenced for moredetailed dimensional information.Dimensional drawings are also availablefrom the selection program. Contact thelocal Trane sales office for submittalinformation.

Electrical Data TablesCompressor motor electrical data isprovided in the data section for eachcompressor size. Rated load amperes(RLA), locked rotor wye amperes (LRA)and expected inrush for the Wye-deltaand Solid State Starter configurationsare shown.

Although the terms “LRA” and“expected inrush” are often usedinterchangeably, the distinction appliedhere is that LRA is the rated inrush forthe motor, but expected inrush is thatallowed by the starter, based on thespecific configuration.

Selecting starters in the Wye-delta orSolid State configuration lowersexpected inrush vs. the Delta (or “across-the-line”) configuration. A Solid StateStarter configuration lowers theexpected inrush by approximately 50percent, while Wye-Delta lowers it byapproximately 66 percent.

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The RLA is based on the motor’sperformance when reaching full ratedhorsepower. The kW rating of the motorwill equal or exceed the kW requirementindicated by the Series R computerselection program at design conditions.If motor kW draw at design conditions isless than the kW rating of the motor, theRLA at design conditions is determinedby multiplying the motor RLA (at thedesired voltage) by this ratio: design kW/motor kW rating. This calculation isperformed within the Series R chillercomputer selection program, makingRLA available as part of the designpredictions. Predicted values includepower factor variation from point topoint.

A voltage utilization range is tabulatedfor each voltage listed. Series R chillersare designed to operate satisfactorilyover a utilization range of ±10 percent ofthe standard design voltages: (a) 200 V,230 V, 380 V, 460 V, and 575 V for 60Hertz, 3-phase, and (b) 380 V, 400 V,415 V for 50 Hertz, 3-phase.

Evaporator and Condenser PressureDropPressure drop data is determined by theSeries R chiller computer selectionprogram available through local Tranesales offices.

Part Load PerformanceActual air-conditioning system loads arefrequently less than full-load designconditions. Depending on the number ofchillers on the job and the load profile,chillers may operate at full load a smallpercentage of the time. With theirexcellent part-load performancecharacteristics and highly energy-efficient operation, Series R chillers canprovide significant operating savings atthese part-load conditions.

SelectionProcedure

System ConsiderationsPart-load chiller operation is frequentlyassociated with reduced condenserwater temperatures. However, ratherthan focusing only on the chiller, it isimportant to balance these temperaturesto achieve the most efficient systemoperation possible. At part-loadoperation, the heat rejected to thecooling tower is less than at full-loadoperation.

Part-load chiller operation is alsotypically associated with reduced outsidewet bulb temperatures, resulting inimproved cooling tower performance.The net result of reduced heat rejectionand lower wet bulb temperatures can becooler condenser water entering thechiller, ultimately improving unitperformance. However, this does notimprove pump or tower efficiency. Toachieve the most efficient systemoperation possible, it is best to minimizethe total power draw of the chiller, tower,and pumps, which may not meanlimiting the condenser watertemperature to what the tower canprovide. To determine specific unit andsystem part-load performance for chillerselection purposes, use the Series Rchiller computer selection program orcontact the local Trane sales office.

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ModelNomenclature

RTH D U D 2 F 0 A0 U A G 3 A 4 L A L G 3 F 2 L A L1,2,3 4 5 6 7 8 9 10,11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

Digits 01, 02, 03 – Series R™

RTH = Series R

Digit 04 – Dev SequenceD = 4th Major Development

Digit 05 – Design ControlU = WCBU

Digit 06 – Compressor FrameB = B CompressorC = C CompressorD = D CompressorE = E Compressor

Digit 07 – Compressor Capacity1 = Smaller Capacity for Frame2 = Larger Capacity for Frame3 = 50Hz Capacity

Digit 08 – Unit Power SupplyA = 200V/60Hz/3Ph powerC = 230V/60Hz/3Ph powerD = 380V/60Hz/3Ph powerR = 380V/50Hz/3Ph powerT = 400V/50Hz/3Ph powerU = 415V/50Hz/3Ph powerF = 460V/60Hz/3Ph powerH = 575V/60Hz/3Ph power

Digit 09 – SpecialsX = No specialsC = All specials denoted by digits elsewhereS = Uncategorized special not denoted by

other digits

Digits 10, 11 – Design Sequence** = First Design, etc. increment when parts

are affected for service purposes

Digit 12 – Agency ListingX = No agency listingU = C/UL

Digit 13 – Pressure Vessel CodeA = ASMEL = Chinese Pressure Vessel Code

Digit 14 – Evaporator FrameB = B FrameC = C FrameD = D FrameE = E FrameF = F FrameG = G Frame

Digit 15 – Evaporator Capacity1 = Tube count #12 = Tube count #23 = Tube count #34 = Tube count #45 = Tube count #56 = Tube count #6

Digit 16 – Evaporator Tube TypeA = Enhanced Fin Copper

Digit 17 – Evaporator Water PassConfiguration2 = 2 pass3 = 3 pass4 = 4 pass

Digit 18 – Evaporator Water ConnectionL = Left Hand Evaporator ConnectionR = Right Hand Evaporator Connection

Digit 19 – Evaporator Connection TypeA = Standard Grooved Pipe

Digit 20 – Evaporator Waterside PressureL = 150 psiH = 300 psi

Digit 21 – CondenserB = B FrameD = D FrameE = E FrameF = F FrameG = G Frame

Digit 22 – Condenser Capacity1 = Tube count #12 = Tube count #23 = Tube count #34 = Tube count #45 = Tube count #5

Digit 23 – Condenser Tube TypeA = Enhanced Fin CopperB = Smooth Bore CopperC = Smooth Bore 90/10 CU/NI

Digit 24 – Condenser Passes2 = 2 Pass

Digit 25 – Condenser Water ConnectionL = Left Hand ConnectionR = Right Hand Connection

Digit 26 – Condenser Connection TypeA = Standard Grooved PipeC = Marine

Digit 27 – Condenser Waterside PressureL = 150 psiH = 300 psi

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ModelNomenclature

A V X Q X E X A A B D Y 444 D A X A 4 X X X R X V X28 29 30 31 32 33 34 35 36 37 38 39 40,41,42 43 44 45 46 47 48 49 50 51 52 53 54

Digit 28 – Condenser Leaving WaterTemperatureA = Standard

Digit 29 – Refrigerant SpecialtiesX = No Refrigerant Isolation ValvesV = With Refrigerant Isolation Valves

Digit 30 – Oil CoolerX = Without Oil CoolerC = With Oil Cooler

Digit 31 – Thermal InsulationX = No InsulationQ = Factory Installed Insulation

Digit 32 – Acoustic InsulationX = No InsulationA = Standard Insulation

Digit 33 – Control, Label, and LiteratureLanguageE = English

Digit 34 – Safety DevicesX = Standard

Digit 35 – Factory ChargeA = Factory Refrigerant Charge (134a)B = Factory Nitrogen Charge

Digit 36 – Shipping PackageA = Domestic - No Skid (standard)B = Domestic - Shrink WrapC = Domestic - SkidD = Domestic - Skid + Shrink WrapH = China - No Skid (standard)K = China - SkidL = China - Shrink WrapM = China - Skid + Shrink WrapJ = Special

Digit 37 – Flow SwitchX = No Flow SwitchA = Evaporator (NEMA 1)B = Evaporator and Condenser (NEMA 1)C = Evaporator (Vapor Proof)D = Evaporator and Condenser (Vapor Proof)

Digit 38 – Factory TestX = Standard TestC = Witness TestD = Performance Test

Digit 39 – Starter TypeY = Wye Delta Closed Transition StarterA = Solid State Starter

Digits 40, 41, 42 – Design RLA (for starter)*** = Selection Assigned

Digit 43 – Power Line Connection TypeA = Terminal BlocksB = Mechanical Disconnect SwitchD = Circuit BreakerF = High Interrupt Circuit BreakerH = Ground Fault Circuit BreakerJ = Ground Fault High Interrupt Circuit

Breaker

Digit 44 – Enclosure TypeA = NEMA 1

Digit 45 – Under/Over Voltage ProtectionX = NoneU = With Under/Over Voltage Protection

Digit 46 – Operator Interface LanguageA = Dyna-View/EnglishB = Dyna-View/FrenchC = Dyna-View/ItalianD = Dyna-View/SpanishE = Dyna-View/GermanF = Dyna-View/DutchG = Dyna-View/Traditional ChineseH = Dyna-View/Simple ChineseJ = Dyna-View/JapaneseK = Dyna-View/PortugueseL = Dyna-View/KoreanM = Dyna-View/Thai

Digit 47 – Digital Communication InterfaceX = None4 = Tracer Interface5 = LCI-C (LonTalk)

Digit 48 – External Chilled Water and CurrentLimit SetpointX = None4 = 4-20mA input2 = 2-10Vdc

Digit 49 – External Base LoadingX = None4 = 4-20mA input2 = 2-10Vdc input

Digit 50 – IcemakingX = NoneA = Icemaking with RelayB = Icemaking without Relay

Digit 51 – Programmable RelaysX = NoneR = With

Digit 52 – Chilled Water ResetX = Chilled Water Reset – Return WaterT = Chilled Water Reset – Outdoor Air

Temperature

Digit 53 – Control OutputsX = NoneV = Condenser Regulating Valve Control &

Percent RLAP = Condenser Pressure (% HPC) & Percent

RLAD = Chiller Differential Pressure & Percent

RLA

Digit 54 – Refrigerant Monitor InputX = NoneA = 100 ppm / 4-20mAB = 1000 ppm / 4-20mAC = 100 ppm / 2-10VdcD = 1000 ppm / 2-10Vdc

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Nominal DataNominal Compressor B1 B2 C1 C2 D1 D2 D3 E3Tonnage (60 Hz) 175-200 200-225 225-275 275-325 325-400 375-450 N/A N/ATonnage (50 Hz) 125-150 150-175 175-225 225-275 275-325 300-350 325-375 375-450Notes:1. Chiller selections can be optimized through the use of the ARI-Certified Series R selection program and by contacting yourlocal Trane sales office.

General Data

General DataEvaporator Condenser Refrigerant

Compressor Evaporator Condenser Water Storage Water Storage Refrigerant ChargeCode Code Code Gallons Liters Gallons Liters Type lb kg

B1 B1 B1 41 155 28 106 HFC-134a 410 186B1 C1 D1 55 208 31 117 HFC-134a 490 222B2 B2 B2 45 170 29 110 HFC-134a 410 186B2 C2 D2 58 220 34 129 HFC-134a 490 222C1 D6 E5 45 170 29 110 HFC-134a 490 222C1 D5 E4 52 197 32 121 HFC-134a 490 222C1 E1 F1 82 310 60 226 HFC-134a 525 238C2 D4 E4 52 197 32 121 HFC-134a 490 222C2 D3 E3 78 295 47 178 HFC-134a 490 222C2 F2 F3 107 405 61 231 HFC-134a 625 284D1 D1 E1 69 261 44 166 HFC-134a 475 216D1 F1 F2 102 386 57 216 HFC-134a 625 284D1 G2 G2 144 545 91 344 HFC-134a 700 318

D2/D3 D2 E2 74 280 47 178 HFC-134a 475 216D2/D3 F2 F3 107 405 61 231 HFC-134a 625 284D2/D3 G3 G3 159 602 97 367 HFC-134a 700 318

E3 D2 E2 74 280 47 178 HFC-134a 475 216E3 F2 F3 107 405 61 231 HFC-134a 625 284E3 G3 G3 159 602 97 367 HFC-134a 700 318

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General Data

Minimum/Maximum Evaporator Flow Rates (Gallons/Minute )Two Pass Three Pass Four Pass

Evaporator Nominal Nominal NominalCode Min Max Conn Size (In.) Min Max Conn Size (In.) Min Max Conn Size (In.)

B1 253 1104 8 168 736 6 —- —- —-B2 288 1266 8 192 844 6 —- —- —-C1 320 1412 8 213 941 6 —- —- —-C2 347 1531 8 232 1022 6 —- —- —-D1 415 1812 8 275 1206 8 —- —- —-D2 450 1980 8 300 1320 8 —- —- —-D3 486 2131 8 324 1417 8 —- —- —-D4 351 1542 8 234 1028 8 —- —- —-D5 351 1542 8 234 1028 8 —- —- —-D6 293 1287 8 196 860 8 —- —- —-E1 450 1980 8 300 1320 8 —- —- —-F1 563 2478 10 376 1655 8 —- —- —-F2 604 2667 10 404 1780 8 —- —- —-G1 —- —- —- 505 2218 10 379 1666 8G2 —- —- —- 550 2413 10 411 1807 8G3 —- —- —- 622 2732 10 466 2050 8

Notes:1. Minimum flow rates are based on water only.2. All water connections are grooved pipe.

Minimum/Maximum Evaporator Flow Rates (Liters/Second)Two Pass Three Pass Four Pass

Evaporator Nominal Nominal NominalCode Min Max Conn Size (mm) Min Max Conn Size (mm) Min Max Conn Size (mm)



Minimum/Maximum Condenser Flow Rates(Gallons/Minute)

Two PassCondenser Nominal

Code Min Max Conn Size (In.)B1 193 850 6B2 212 935 6D1 193 850 6D2 212 935 6E1 291 1280 8E2 316 1390 8E3 325 1420 8E4 245 1080 8E5 206 910 8F1 375 1650 8F2 355 1560 8F3 385 1700 8G1 444 1960 8G2 535 2360 8G3 589 2600 8


Minimum/Maximum Condenser Flow Rates (Liters/Second)


Code Min Max Conn Size (mm)B1 12 54 150B2 13 59 150D1 12 54 150D2 13 59 150E1 18 81 200E2 20 88 200E3 21 90 200E4 15 68 200E5 13 57 200F1 24 104 200F2 22 98 200F3 24 107 200G1 28 124 200G2 34 149 200G3 37 164 200


Water Flow Rates

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Minimum/Maximum Evaporator Flow Rates (GPM)Two Pass Three Pass Four Pass

Evaporator Nominal Nominal NominalCode Min Max Conn Size (In.) Min Max Conn Size (In.) Min Max Conn Size (In.)


Notes:1. Minimum flow rates are based on brine solution.2. All water connections are grooved pipe.

General Data

Minimum/Maximum Evaporator Flow Rates (Liters/Second)Two Pass Three Pass Four Pass

Evaporator Nominal Nominal NominalCode Min Max Conn Size (mm) Min Max Conn Size (mm) Min Max Conn Size (mm)



Minimum/Maximum Condenser Flow Rates(GPM)


Code Min Max Conn Size (In.)B1 230 850 6B2 255 935 6D1 230 850 6D2 255 935 6E1 350 1280 8E2 380 1390 8E3 390 1420 8E4 295 1080 8E5 250 910 8F1 450 1650 8F2 430 1560 8F3 460 1700 8G1 530 1960 8G2 650 2360 8G3 710 2600 8


Minimum/Maximum Condenser Flow Rates(Liters/Second)


Code Min Max Conn Size (mm)B1 15 54 150B2 16 59 150D1 15 54 150D2 16 59 150E1 22 81 200E2 24 88 200E3 25 90 200E4 19 68 200E5 16 57 200F1 28 104 200F2 27 98 200F3 29 107 200G1 33 124 200G2 41 149 200G3 45 164 200


Brine Flow Rates

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Electrical Dataand Connections

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RLC-PRC020-EN20


Compressor Motor Electrical Data (60 Hertz)Nominal Voltage 200 230 380 460 575

Compressor Voltage 180/ 208/ 342/ 414/ 516/Code Utilization Range 220 254 418 506 633

Max kW 174 174 174 174 174B1, B2 RLA @ Max kW 557 484 291 241 193

LRAY 970 818 488 400 329LRAD 3103 2617 1561 1280 1053

Max kW 249 249 249 249 249C1, C2 RLA @ Max kW 812 698 421 349 279

LRAY 1173 936 558 469 375LRAD 3634 2901 1727 1453 1162

Max kW 329 329 329 329 329D1, D2 RLA @ Max kW 888 888 549 455 367

LRAY 1690 1532 850 730 612LRAD 5477 4966 2755 2366 1984

Notes:1. See Selection Procedure Section for details.2. The RLA @ Max kW is based on the performance of the motor developing full rated horsepower.3. Electrical component sizing should be based on actual jobsite operating conditions. This factor can be obtained through the

use of the Series R chiller selection program available through local Trane sales offices.

Compressor Motor Electrical Data (50 Hertz)Nominal Voltage 380 400 415

Compressor Voltage 342/ 360/ 374/Code Utilization Range 418 440 457

Max kW 139 145 148B1, B2 RLA @ Max kW 233 233 233

LRAY 391 412 428LRAD 1229 1296 1348

Max kW 201 209 213C1, C2 RLA @ Max kW 349 349 349

LRAY 456 480 498LRAD 1414 1488 1544

Max kW 271 280 284D1, D2, D3 RLA @ Max kW 455 455 455

LRAY 711 748 776LRAD 2303 2424 2515

Max kW 288 301 306E3 RLA @ Max kW 488 488 488

LRAY 711 748 776LRAD 2303 2424 2515

Notes:1. See Selection Procedure Section for details.2. The RLA @ Max kW is based on the performance of the motor developing full rated horsepower.3. Electrical component sizing should be based on actual jobsite operating conditions. This factor can be obtained through theuse of the Series R chiller selection program available through local Trane sales offices.

Electrical ConnectionsStarter Panel Selection Lug SizeConnection RLA L1-L3 (Each Phase)

Terminals Only 000-760 (2) #4-500 MCM761-888 (4) 4/0-500 MCM

Main Circuit 000-185 (1) #4-350 MCMBreaker or 186-296 (2) 2/0-250 MCMNon-Fused 297-444 (2) 3/0-350 MCM

Disconnect Switch 445-592 (2) #1-500 MCM593-888 (4) 4/0-500 MCM

Note:1. Lug sizes are independent of starter type.

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Shipping and Operating WeightsCompressor Evaporator Condenser Operating Weight Shipping Weight

Code Code Code (lbs) (kg) (lbs) (kg)B1 B1 B1 9867 4,476 9292 4,215B1 C1 D1 10554 4,787 9837 4,462B2 B2 B2 10019 4,545 9402 4,265B2 C2 D2 10653 4,832 9953 4,515C1 D6 E5 13397 6,077 12780 5,797C1 D5 E4 13673 6,202 12973 5,884C1 E1 F1 15818 7,175 14718 6,676C2 D4 E4 13672 6,201 12972 5,884C2 D3 E3 15044 6,824 14002 6,351C2 F2 F3 17560 7,965 16168 7,334D1 D1 E1 15385 6,978 14443 6,551D1 F1 F2 17537 7,955 16187 7,342D1 G2 G2 21065 9,555 19107 8,667

D2, D3 D2 E2 15570 7,062 14562 6,605D2, D3 F2 F3 18220 8,264 16820 7,629D2, D3 G3 G3 21641 9,816 19508 8,849

E3 D2 E2 15728 7,134 14720 6,677E3 F2 F3 18356 8,326 16956 7,691E3 G3 G3 21786 9,882 19653 8,914

Notes:1. All weights +- 3%.2. Shipping weights include standard 150 psig water boxes, refrigerant charge, and oil charge.3. Operating weights include refrigerant, oil, and water charges.

Dimensions andWeights

RLC-PRC020-EN22


BBB ConfigurationRecommended Clearances

Front 36" (914 mm)Back 36" (914 mm)Either End 36" (914 mm)Other End* 108" (2743 mm)Top 36" (914 mm)

* Clearance for tube removalNote:1. Dimensions are based on 3 Pass Evap / 2 Pass

Cond and LH/LH water connections. Refer tosubmittals for exact configuration.

2. Refer to the Nominal Capacity Data table in theGeneral Data section for capacity ranges of eachcompressor.

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BCD ConfigurationRecommended Clearances





RLC-PRC020-EN24


CDE, DDE, EDE ConfigurationRecommended Clearances





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CEF ConfigurationRecommended Clearances





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CFF, DFF, EFF ConfigurationRecommended Clearances





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DGG, EGG ConfigurationRecommended Clearances





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MechanicalSpecifications

GeneralExposed metal surfaces are painted withair-dry beige, direct-to-metal, single-component paint. Each unit ships withfull operating charges of refrigerant andoil. Molded neoprene isolation pads aresupplied for placement under all supportpoints. Startup and operator instructionby factory-trained service personnel areincluded.

Compressor and MotorThe unit is equipped with a semi-hermetic, direct-drive, 3600-rpm (3000rpm @ 50 Hz) rotary compressor thatincludes a capacity control slide valve, oilsump heater, and differential pressurerefrigerant oil flow system. Fourpressure-lubricated, rolling-elementbearing groups support the rotatingassembly.

The motor is a suction gas-cooled,hermetically sealed, two-pole, squirrelcage induction-type.

Evaporator and CondenserShells are carbon steel plate. Theevaporator and condenser are designed,tested, and stamped in accordance withASME Code for refrigerant-side/working-side pressure of 200 psig.

All tube sheets are made of carbon steel;tubes are mechanically expanded intotube sheets and mechanically fastenedto tube supports. Evaporator tubes are1.0-inch (25.4 mm) diameter andcondenser tubes are 0.75-inch(19.05 mm) diameter. Both types can beindividually replaced. Standard tubes areexternally finned, internally enhancedseamless copper with lands at all tubesheets.

All water pass arrangements areavailable with grooved connections (150or 300 psig waterside). All connectionsmay be either right- or left-handed.Waterside shall be hydrostatically testedat 1.5X design working pressure.

Refrigerant CircuitAn electronically controlled expansionvalve is provided to maintain properrefrigerant flow.

Unit Controls (CH530)The microprocessor-based control panelis factory-installed and factory-tested.The control system is powered by acontrol power transformer, and will loadand unload the chiller throughadjustment of the compressor slidevalve. Microprocessor-based chilledwater reset based on return water isstandard.

The CH530 microprocessorautomatically acts to prevent unitshutdown due to abnormal operatingconditions associated with lowevaporator refrigerant temperature, highcondensing temperature, and/or motorcurrent overload. If an abnormaloperating condition continues and theprotective limit is reached, the machineshould shut down.

The panel includes machine protectionshutdown requiring manual reset for thefollowing conditions:• low evaporator refrigerant temperatureand pressure

• high condenser refrigerant pressure• low oil flow• critical sensor or detection circuit faults• motor current overload

• high compressor dischargetemperature

• lost communication between modules• electrical distribution faults: phase loss,

phase imbalance, or phase reversal• external and local emergency stop• starter transition failure

The panel also includes machineprotection shutdown with automaticreset for the following correctableconditions:• momentary power loss• under/over voltage• loss of evaporator or condenser water

flow

When a fault is detected, the controlsystem conducts more than 100diagnostic checks and displays results.The display will identify the fault,indicate date, time, and operating modeat time of occurrence, and provide typeof reset required and a help message.The diagnostic history will display thelast ten diagnostics with their times anddates of occurrence.

Clear Language Display PanelFactory-mounted to the control paneldoor, the operator interface has an LCDtouch-screen display for operator inputand information output. This interfaceprovides access to the followinginformation: evaporator report,condenser report, compressor report,ASHRAE Guideline 3 report, operatorsettings, service settings, service tests,and diagnostics. All diagnostics andmessages are displayed in “clearlanguage.”

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Data contained in available reportsincludes:• Water and air temperatures• Refrigerant levels and temperatures• Oil pressure• Flow switch status• EXV position• Head pressure control command• Compressor starts and run-time• Line phase percent RLA, amps, andvolts

All necessary settings and setpoints areprogrammed into the microprocessor-based controller via the operatorinterface. The controller is capable ofreceiving signals contemporaneouslyfrom a variety of control sources, in anycombination, and priority order ofcontrol sources can be programmed.The control source with prioritydetermines active setpoints via thesignal it sends to the control panel.Control sources may be:• the local operator interface (standard)• a 4-20 mA or 2-10 VDC signal from anexternal source (interface optional;control source not supplied)

• Trane Tracer Summit™ system(interface optional)

• Generic BAS (optional points; controlsource not supplied)

• LonTalk LCI-C (interface optional;control source not supplied)

MechanicalSpecifications

Unit-Mounted StarterThe unit is supplied with a NEMA 1 typeenclosure with top power-wiring accessand three-phase, solid state overloadprotection. The starter is available in aWye-Delta configuration, factory-mounted and fully pre-wired to thecompressor motor and control panel. Afactory-installed, factory-wired 600VAcontrol power transformer provides allunit control power (120 VAC secondary)and CH530 module power (24 VACsecondary). Optional starter featuresinclude circuit breakers, ground faultcircuit breakers, and mechanical, non-fused disconnects.

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ConversionTable

Trane has a policy of continuous product and product data improvement and reserves the right to changedesign and specifications without notice.

Literature Order Number

File Number

Supersedes

Stocking LocationTrane

A business of American Standard Companies

www.trane.com

For more information, contactyour local sales office ore-mail us at [email protected].

RLC-PRC020-EN

PL-RF-RLC-000-PRC020-EN-0804

RLC-PRC020-EN-0204

Inland

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