Trane Refrigerator Model RTHD User Manual

Series RHelical Rotary  
Liquid Chillers  
Model RTHD  
175-450 Tons (60 Hz)  
125-450 Tons (50 Hz)  
Built for Industrial and Commercial Applications  
April 2003  
RLC-PRC020-EN  
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Contents  
2
4
Introduction  
Features and Benefits  
Options  
6
8
Display  
9
Application Considerations  
Selection Procedure  
Model Nomenclature  
General Data  
11  
13  
15  
17  
20  
27  
Electrical Data and Connections  
Dimensions and Weights  
Mechanical Specifications  
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Features and  
Benefits  
Application Versatility and High  
Performance  
Generic Building Automation System  
points are available for easy access to  
operational information.  
Extensive information on professional  
design selection and layout is available  
in a simple, highly readable electronic  
format.  
Standard model RTHD configurations  
are in stock and available for immediate  
delivery, and Trane offers the fastest  
ship cycles in the industry for built-to-  
order units.  
Industrial / Low Temperature Process  
Cooling Excellent operating  
temperature range and precise control  
capabilities enable tight control with  
single chiller or series configuration.  
Ice/Thermal Storage Specifiers and  
operators benefit from dual setpoint  
control and industry-leading  
temperature, efficiency, and control  
capabilities, plus outstanding support  
through partnership with Calmac, a  
strong Trane partner providing proven  
installation examples, templates, and  
references that minimize design time  
and energy costs.  
Heat Recovery Maximum condenser  
temperature exceeds those of previous  
technologies, providing hot water and  
tight control that minimizes operating  
costs for the chilled water plant and  
boiler/hot water heater, and consistent  
dehumidification.  
Simple, Economical Installation  
Compact size makes the model RTHD  
well suited for the retrofit and  
replacement market.  
All units fit through standard double-  
width doors.  
Screw compressor technology and the  
electronic expansion valve provide  
reliable performance in an expanded  
range of operating temperatures.  
Tight water temperature control  
extends to operation of multiple chillers  
in parallel or series configurations,  
offering further system design flexibility  
for maximum efficiency.  
Advanced design enables chilled water  
temperature control to +/- 0.5°F (.28°C)  
for flow changes up to 10 percent per  
minute, plus handling of flow changes  
up to 30 percent per minute for comfort  
cooling.  
Two-minute stop-to-start and five-  
minute start-to-start anti-recycle timer  
allows tight chilled water temperature  
control in constant or transient low-  
load applications.  
LonMark communications capability  
provides excellent, trouble-free  
interoperability.  
Bolt-together construction makes for  
fast, easy unit disassembly.  
Small RTHD footprint saves valuable  
equipment room space and alleviates  
access concerns for most retrofit jobs.  
Lightweight design simplifies rigging  
requirements, further reducing  
installation time requirements and  
costs.  
Full factory refrigerant or nitrogen and  
oil charges reduce required field labor,  
materials, and installation cost.  
Only evaporator and condenser water  
piping is required; no starter water  
cooling (with its associated safety  
concerns) or field piping is necessary.  
Oil cooler and purge system  
connections have been eliminated.  
Simple power connection simplifies  
overall installation.  
Standard unit-mounted starter for  
Wye-Delta and Solid State eliminates  
additional jobsite installation  
considerations and labor requirements.  
Trane has conducted extensive factory  
testing, and also offers options for in-  
person and/or documented system  
performance verification.  
CH530 controls easily interface with  
Tracer Summitbuilding automation  
systems through single twisted-pair  
wire.  
Applications in this catalog specifically  
excluded from the ARI certification  
program are:  
Low temperature applications,  
including ice storage  
Glycol  
50Hz units below 200 nominal tons  
Pueblo  
Business Unit  
4
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Features and  
Benefits  
State-of-the-Art, Precision Control  
Microprocessor-based CH530 controls  
monitor and maintain optimal  
The Trane helical rotary compressor is  
a proven design resulting from years of  
research and thousands of test hours,  
including extensive testing under  
extraordinarily severe operating  
conditions.  
operation of the chiller and its  
associated sensors, actuators, relays,  
and switches, all of which are factory-  
assembled and extensively tested.  
Easy interface with computers hosting  
Tracer Summitbuilding automation/  
energy management systems allows  
the operator to efficiently optimize  
comfort system performance and  
minimize operating costs.  
Trane is the worlds largest  
manufacturer of large helical rotary  
compressors, with tens of thousands of  
commercial and industrial installations  
worldwide demonstrating a reliability  
rate of greater than 99 percent in the  
first year of operation.  
PID (proportional integral derivative)  
control strategy ensures stable, efficient  
chilled water temperature control,  
maintaining +/- 1°F (0.56°C) control by  
proactively reacting to instantaneous  
load changes of up to 50 percent.  
Adaptive Controlattempts to maintain  
chiller operation under adverse  
conditions, when many other chillers  
might simply shut down.  
Easy-to-use operator interface displays  
all operating and safety messages, with  
complete diagnostics information, on a  
highly readable panel with a scrolling  
touch-screen display.  
The RTHD features a complete range of  
chiller safety controls.  
Over 120 diagnostic and operating  
points are available, with standard  
displays including chiller current draw,  
condenser pressure, and evaporator  
pressure.  
Operating and Life Cycle  
Cost-Effectiveness  
Electronic expansion valve enables  
exceptionally tight temperature control  
and extremely low superheat, resulting  
in more efficient full-load and part-load  
operation than previously available.  
Precise compressor rotor tip clearance  
ensures optimal efficiency.  
Condenser and evaporator tubes use  
the latest heat transfer technology for  
increased efficiency.  
The RTHD includes standard electrical  
demand limiting.  
Chilled water reset based on return  
water temperature is standard.  
High compressor lift capabilities and  
tight chilled water temperature control  
allow highly efficient system design  
with minimal operational concerns.  
Design capabilities include:  
variable primary flow;  
series chiller arrangements for  
evaporator and/or condenser;  
low evaporator and condenser flow.  
Reliability and Ease of Maintenance  
Direct drive, low-speed compressor a  
simple design with only three moving  
parts provides maximum efficiency,  
high reliability, and low maintenance  
requirements.  
Electronic expansion valve, with fewer  
moving parts than alternative valve  
designs, offers highly reliable  
operation.  
Suction gas-cooled motor stays  
uniformly cool at lower temperatures  
for longer motor life.  
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Options  
Tracer Summit Communications  
Link to factory-installed, tested  
communication board, via single  
twisted-pair wiring, adds Tracer Summit  
communications to the system.  
Chilled Water Reset Outdoor Air  
Temperature  
Model RTHD Options  
Insulation  
All low-temperature surfaces are  
covered with 3/4" (19.05 mm) Armaflex II  
or equal (K = 0.28) insulation; this  
includes the evaporator and water  
boxes, suction line, motor housing, and  
liquid/vapor separator.  
Controls, sensors, and safeties allow  
reset of chilled water temperature, based  
on temperature signal, during periods of  
low outdoor air temperature. (Chilled  
water reset based on return chilled water  
temperature is standard.)  
LonTalk LCI-C Interface  
LonTalk (LCI-C) communications  
capabilities are available, with  
communication link via single twisted-  
pair wiring to factory-installed, tested  
communication board.  
Condenser-Regulating Valve Control  
Chiller applies a Proportional Integrative  
Control (PID) algorithm to control water  
regulating valve via 0-10Vdc signal.  
Low-Temperature Evaporator  
Addition of an oil cooler to the oil circuit  
enables evaporator operation down to  
minimum leaving water temperature of  
10°F (-12.2°C).  
External Chilled Water Setpoint  
External Chilled Water Setpoint is  
communicated to a factory-installed,  
tested communication board through a  
2-10Vdc or 4-20mA signal.  
Percent of Full Run Load Amps Output  
Control system indicates the active  
chiller percent of full run load amps,  
based on a 0-10Vdc signal.  
High-Temperature Condenser  
Addition of an oil cooler to the oil circuit  
enables condenser operation up to  
maximum leaving water temperature of  
114°F (45.6°C).  
External Current Limiting  
Condenser Pressure Output  
External Current Limit Setpoint is  
communicated to a factory-installed,  
tested communication board through a  
2-10Vdc or 4-20mA signal.  
Control system indicates chiller  
differential pressure or condenser  
pressure, based on a 0-10Vdc signal.  
Smooth-Bore Condenser Tubes  
Smooth-bore copper or premium cupro-  
nickel condenser tubes, 3/4" (19.05 mm)  
in diameter with .035" (0.889 mm) wall  
thickness, are available for high fouling  
water applications.  
Refrigerant Monitor Input  
External Base Loading  
Control system indicates refrigerant  
monitor status of 0-100 or 0-1000 ppm  
(user selectable), based on a 2-10Vdc /  
4-20 mA signal.  
External Base Loading is communicated  
to a factory-installed and tested  
communication board through a  
2-10Vdc or 4-20mA signal.  
Refrigerant Isolation Valves  
Solid State Starter  
Factory-installed condenser inlet and  
outlet refrigerant valves allow isolation  
of the full refrigerant charge in the  
condenser while servicing the chiller.  
Ice Making Control  
Solid State Starter is unit-mounted with  
a NEMA 1 gasketed enclosure. To extend  
starter life, contactors bypass current  
from the silicon control rectifiers (SCRs)  
after startup.  
Controls and safeties allow operation  
with brine temperatures down to 20°F  
(-6.7°C) , and dual setpoints enable both  
ice making and daytime comfort cooling.  
Marine Water Boxes  
Addition of marine water boxes for the  
condenser allows tube cleaning without  
water pipe interference.  
Programmable Relays  
Default-set, factory-installed,  
Under/Over-Voltage Protection  
Unit receives protection against  
variations in voltage. (Current lag and  
spike protection is standard.)  
programmable relays allow the operator  
to select four relay outputs from a list of  
eight. Available relays are: Alarm-  
Latching, Alarm-Auto Reset, General  
Alarm, Warning, Chiller Limit Mode,  
Compressor Running, Head Pressure  
Relief Request, and Tracer Control.  
300 psig Evaporator and Condenser  
Water Boxes  
Water boxes are designed for 300 psig  
maximum waterside working pressure,  
and grooved pipe water connections are  
provided for ease of installation.  
6
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Options  
Main Power Disconnect  
Options:  
More Options:  
2-Way Condenser Water Regulating Valve  
For water regulation, a field-installed,  
2-way butterfly-type (lug-style) valve,  
with integral electrical operator and  
factory-mounted valve actuator, is  
available. The single-phase, reversible  
motor can be factory-wired for 115 VAC,  
60 Hz or 220 VAC, 50 Hz; the 2-way valve  
is field-wired and controlled by the  
chiller regulating valve control output;  
valves are available in 6" and 8" (152.4  
and 203.2 mm) sizes.  
Non-fused Disconnect  
A UL-approved non-fused molded case  
disconnect switch, factory pre-wired with  
terminal block power connections and  
equipped with a lockable external  
operator handle, is available to  
disconnect the chiller from main power.  
Standard Interrupting Capacity Circuit  
Breaker  
A UL-approved standard interrupting  
molded case capacity circuit breaker,  
factory pre-wired with terminal block  
power connections and equipped with a  
lockable external operator handle, is  
available to disconnect the chiller from  
main power.  
Nitrogen Charge  
Unit is shipped with a nitrogen holding  
charge in lieu of refrigerant.  
Seal Kit for Reassembly  
Ideal for situations when the bolt-  
together construction of the RTHD will  
be separated for installation, this seal kit  
provides replacement gaskets and rings  
for reassembly.  
High Interrupting Capacity Circuit  
Breaker  
A UL-approved high interrupting  
molded case capacity circuit breaker,  
factory pre-wired with terminal block  
power connections and equipped with a  
lockable external operator handle, is  
available to disconnect the chiller from  
main power.  
Performance and Witness Tests  
ARI-certified RTHD Performance and  
Witness Tests are available, based on  
requested operating points, to certify  
chiller performance before delivery.  
Ground Fault Circuit Breaker  
A UL-approved standard interrupting  
molded case capacity circuit breaker  
with ground fault interrupting capability,  
factory pre-wired with terminal block  
connections and equipped with a  
lockable external operator handle, is  
available to disconnect the chiller from  
main power.  
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Display  
Fast, easy access to available chiller  
data in tabbed format, including:  
Modes of operation, including  
normal cooling and icemaking  
Water temperatures and setpoints  
Loading and limiting status and  
setpoints  
Evaporator, condenser, and  
compressor reports containing all  
operational information on  
individual components, including:  
- Water and air temperatures  
- Refrigerant levels, temperatures,  
and approach  
LCD Touch-Screen Display  
with Multi-Language Support  
The standard DynaView display  
provided with the CH530 control panel  
features an LCD touch-screen, allowing  
access to all operational inputs and  
outputs. This display supports eight  
languages: English, Spanish, Traditional  
Chinese, Simplified Chinese, Japanese,  
Portuguese (for Brazil), Korean, and Thai.  
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  
- Oil pressure  
- Flow switch status  
- EXV position  
- Head pressure control command  
- Compressor starts and run-time  
- Line phase percent RLA, amps, and  
volts  
Additional Display Features Include:  
LCD touch-screen with LED  
backlighting, for scrolling access to  
input and output operating information  
Weather-proof enclosure for reliable  
operation in non-standard indoor  
environments  
Spin value buttons to allow  
continuously variable setpoints when  
applicable  
Alarm and diagnostic information,  
including:  
- Flashing alarms with touch-screen  
button for immediate address of  
alarm condition  
- Scrollable list of last ten active  
diagnostics  
- Specific information on applicable  
diagnostic from list of over one-  
hundred  
- Automatic or manual resetting  
diagnostic types  
- current limit  
- ice building  
- base loading  
Display specifics, including:  
- date  
Radio and action buttons for easy, one-  
time actions and settings  
- format  
- time  
Single-screen, folder/tab-style display  
of all available information on  
individual components (evaporator,  
condenser, compressor, etc.)  
Automatic and immediate stop  
capabilities for standard or immediate  
manual shutdown  
Manual override indication  
Password entry/lockout system to  
enable or disable display  
- display lockout  
- display units  
- language setting  
- Reports, listed on a single tabbed  
screen for easy access, including:  
ASHRAE, containing all guideline  
3 report information  
Evaporator  
Condenser  
Compressor  
8
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Application  
Considerations  
Condenser Water Temperatures  
Reduced sensitivity to condenser water  
startup temperatures is one major  
enhancement in the newest-generation  
water-cooled Series R chiller. With the  
model RTHD chiller, a condenser water  
control method is necessary only if the  
unit starts with entering water  
temperatures below 55°F (12.8°C), or  
between 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 not  
possible.  
power input required, but the ideal  
temperature for optimizing total system  
power consumption will depend on the  
overall system dynamics. From a system  
perspective, some improvements in  
chiller efficiency may be offset by the  
increased tower fan and pumping costs  
required to achieve the lower tower  
temperatures. Contact your local Trane  
systems solution provider for more  
information on optimizing system  
performance.  
Some basic rules should be followed  
whenever using these system design  
and operational savings methods with  
the RTHD. The proper location of the  
chilled water temperature control sensor  
is in the supply (outlet) water. This  
location allows the building to act as a  
buffer, and it assures a slowly changing  
return water temperature. If there is  
insufficient water volume in the system  
to provide an adequate buffer,  
temperature control can be lost,  
resulting in erratic system operation and  
excessive compressor cycling. To ensure  
consistent operation and tight  
temperature control, the chilled water  
loop should be at least two minutes. If  
this recommendation cannot be  
followed, and tight leaving water  
temperature control is necessary, a  
storage tank or larger header pipe  
should be installed to increase the  
volume of water in the system.  
The minimum acceptable refrigerant  
pressure differential between condenser  
and evaporator is 25 psid. The chiller  
control system will attempt to obtain and  
maintain this differential at startup, but  
for continuous operation a design  
should maintain a 25°F (13.9°C)  
differential from evaporator leaving  
water temperature to condenser leaving  
water temperature.  
When the application requires startup  
temperatures below the prescribed  
minimums, a variety of options are  
available. To control a 2-way or 3-way  
valve, Trane offers a Condenser  
Regulating Valve Control option for the  
CH530 controls. This option enables the  
CH530 controls to send a signal for  
opening and closing the valve as  
necessary to maintain chiller differential  
pressure. The 2-way valves are available  
as a ship-with option. Tower bypass is  
also a valid control method if the chiller  
temperature requirements can be  
maintained.  
Variable Evaporator Flow and Short  
Evaporator Water Loops  
For variable primary flow applications,  
the rate of chilled water flow change  
should not exceed 10 percent of design  
per minute to maintain +/-0.5°F (0.28°C)  
leaving evaporator temperature control.  
For applications in which system energy  
savings is most important and tight  
temperature control is classified as  
+/-2°F (1.1°C), up to 30 percent changes  
in flow per minute are possible. Flow  
rates should be maintained between the  
minimum and maximum allowed for  
any particular chiller configuration.  
Variable evaporator flow is an energy-  
saving design strategy which has quickly  
gained acceptance as advances in chiller  
and controls technology have made it  
possible. With its linear unloading  
compressor design and advanced CH530  
controls, the RTHD has excellent  
capability to maintain leaving water  
temperature control within +/-0.5°F  
(0.28°C) , even for systems with variable  
evaporator flow and small chilled water  
volumes.  
Trane Series R chillers start and operate  
successfully and reliably over a range of  
load conditions with controlled entering  
condenser water temperature. Reducing  
the condenser water temperature is an  
effective method of lowering chiller  
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Application  
Considerations  
Series Chiller Arrangements  
Like series arrangements on the  
Water Pumps  
Another energy-saving strategy is to  
design the system around chillers  
arranged in series, on the evaporator,  
condenser, or both. The actual savings  
possible with such strategies depends  
on the application dynamics and should  
be researched by consulting your Trane  
Systems Solutions Representative and  
applying the Trane System Analyzer  
program. It is possible to operate a pair  
of chillers more efficiently in a series  
chiller arrangement than in a parallel  
arrangement. It is also possible to  
achieve higher entering-to-leaving chiller  
differentials, which may, in turn, provide  
the opportunity for lower chilled water  
design temperature, lower design flow,  
and resulting installation and operational  
cost savings. The Trane screw  
evaporator, series arrangements on the  
condenser may enable savings. This  
approach may allow reductions in pump  
and tower installation and operating  
costs. Maximizing system efficiency  
requires that the designer balance  
performance considerations for all  
system components; the best approach  
may or may not involve multiple chillers,  
or series arrangement of the evaporators  
and/or condensers. This ideal balance of  
design integrity with installation and  
operating cost considerations can also  
be obtained by consulting a Trane  
representative and applying the Trane  
System Analyzer program.  
Where noise limitation and vibration-free  
operation are important, Trane strongly  
encourages the use of 1750-rpm (60 Hz),  
1450-rpm (50 Hz) pumps. Specifying or  
using 3600-rpm (60 Hz), 3000-rpm (50 Hz)  
condenser water and chilled water  
pumps must be avoided, because such  
pumps may operate with objectionable  
levels of noise and vibration. In addition,  
a low frequency beat may occur due to  
the slight difference in operating rpm  
between 3600-rpm (60 Hz), 3000-rpm  
(50 Hz) water pumps and Series R chiller  
motors. Important Note: The chilled  
water pump must not be used to stop  
the chiller.  
Water Treatment  
Acoustic Considerations  
The use of untreated or improperly  
treated water in chillers may result in  
scaling, erosion, corrosion, and algae or  
slime buildup. It is recommended that  
the services of a qualified water  
treatment specialist be engaged to  
determine what treatment, if any, is  
advisable. Trane assumes no  
For chiller sound ratings, installation tips,  
and considerations on chiller location,  
pipe isolation, etc., refer to the Trane  
Water-Cooled Series R Chillers Sound  
Ratings and Installation Guide. Using the  
information provided in this bulletin,  
contact a certified sound consultant to  
aid in proper mechanical room design  
and treatment.  
compressor also has excellent  
capabilities for lift,which affords an  
opportunity for savings on the  
evaporator and condenser water loops.  
responsibility for the results of using  
untreated or improperly treated water.  
10  
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Selection  
Procedure  
Trane Series R chiller performance is  
rated in accordance with the ARI  
Standard 550/590-1998 Certification  
Program. Chiller selection assistance and  
performance information can be  
obtained by using the Series R chiller  
selection program, available through  
local Trane sales offices.  
Unit Performance with Fluid Media  
Other Than Water  
Dimensional Drawings  
Dimensional drawings provided for  
selection purposes illustrate overall  
measurements of the unit. The  
recommended service clearances are  
those required to easily service the  
Series R chiller.  
Series R chillers can be provided with a  
wide variety of fluid media other than  
water, including ethylene glycol and  
propylene glycolin the evaporator,  
condenser or both. Chillers using media  
other than water are excluded from the  
ARI 550/590-98 Certification Program,  
but are rated in accordance with ARI  
Standard 550/590-98. Trane factory  
performance tests are only performed  
with water as the cooling and heat-  
rejection media. When considering  
selection of media other than water,  
contact the local Trane sales office for  
chiller selections and factory  
All catalog dimensional drawings are  
subject to change, and current submittal  
drawings should be referenced for more  
detailed dimensional information.  
Dimensional drawings are also available  
from the selection program. Contact the  
local Trane sales office for submittal  
information.  
Performance  
The computerized Series R chiller  
selection program provides performance  
data for each possible chiller selection at  
both full-load and part-load design  
points, as required.  
It should be noted that changing the  
number of water passes or the water  
flow rates will generally alter the  
performance of a particular chiller. To  
attain maximum benefit from the wide  
range of chiller models and options  
available, designers are encouraged to  
first develop performance specifications  
and then use the chiller selection  
program to optimize all selections. This  
will help ensure selection of the  
Electrical Data Tables  
Compressor motor electrical data is  
provided in the data section for each  
compressor size. Rated load amperes  
(RLA), locked rotor wye amperes (LRA)  
and expected inrush for the Wye-delta  
and Solid State Starter configurations  
are shown.  
performance testing information.  
Fluid media other than water lowers the  
heat transfer coefficient, and therefore  
reduces chiller performance. In general,  
it is good practice to hold the percent  
glycol added to within the minimum  
allowed by the Trane selection program,  
based on either (a) unit operating  
temperatures, or (b) the operating  
temperatures the evaporator or  
condenser water will experience under  
its full range of conditions. Adding more  
glycol than required for the specific  
application is equivalent to selecting a  
less efficient chiller. Lower-viscosity  
glycols such as ethylene will have less  
adverse impact on chiller performance  
than higher-viscosity glycols such as  
propylene.  
Although the terms LRAand  
expected inrushare often used  
interchangeably, the distinction applied  
here is that LRA is the rated inrush for  
the motor, but expected inrush is that  
allowed by the starter, based on the  
specific configuration.  
compressor-evaporator-condenser  
combination that most closely meets the  
job requirements. To optimize system  
performance, all selections should also  
be balanced with other system  
components.  
Selecting starters in the Wye-delta or  
Solid State configuration lowers  
expected inrush vs. the Delta (or across-  
the-line) configuration. A Solid State  
Starter configuration lowers the  
expected inrush by approximately 50  
percent, while Wye-Delta lowers it by  
approximately 66 percent.  
Fouling Factors  
ARI Standard 550 includes a definition of  
clean tube fouling. The recommended  
standard fouling adjustments are 0.0001  
hr-sq ft-deg F/Btu (0.044 sq m-deg C/kW)  
for the evaporator and 0.00025 hr-sq ft  
deg F/Btu (0.0176 sq m-deg C/kW) for the  
condenser, from an increment of 0.0000  
clean.Chiller specifications should be  
developed using the most current  
standard fouling factors.  
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Selection  
Procedure  
The RLA is based on the motors  
System Considerations  
performance when reaching full rated  
horsepower. The kW rating of the motor  
will equal or exceed the kW requirement  
indicated by the Series R computer  
selection program at design conditions.  
If motor kW draw at design conditions is  
less than the kW rating of the motor, the  
RLA at design conditions is determined  
by multiplying the motor RLA (at the  
desired voltage) by this ratio: design kW/  
motor kW rating. This calculation is  
performed within the Series R chiller  
computer selection program, making  
RLA available as part of the design  
predictions. Predicted values include  
power factor variation from point to  
point.  
Part-load chiller operation is frequently  
associated with reduced condenser  
water temperatures. However, rather  
than focusing only on the chiller, it is  
important to balance these temperatures  
to achieve the most efficient system  
operation possible. At part-load  
operation, the heat rejected to the  
cooling tower is less than at full-load  
operation.  
Part-load chiller operation is also  
typically associated with reduced outside  
wet bulb temperatures, resulting in  
improved cooling tower performance.  
The net result of reduced heat rejection  
and lower wet bulb temperatures can be  
cooler condenser water entering the  
chiller, ultimately improving unit  
A voltage utilization range is tabulated  
for each voltage listed. Series R chillers  
are designed to operate satisfactorily  
over a utilization range of 10 percent of  
the standard design voltages: (a) 200 V,  
230 V, 380 V, 460 V, and 575 V for 60  
Hertz, 3-phase, and (b) 380 V, 400 V,  
415 V for 50 Hertz, 3-phase.  
performance. However, this does not  
improve pump or tower efficiency. To  
achieve the most efficient system  
operation possible, it is best to minimize  
the total power draw of the chiller, tower,  
and pumps, which may not mean  
limiting the condenser water  
temperature to what the tower can  
provide. To determine specific unit and  
system part-load performance for chiller  
selection purposes, use the Series R  
chiller computer selection program or  
contact the local Trane sales office.  
Evaporator and Condenser Pressure  
Drop  
Pressure drop data is determined by the  
Series R chiller computer selection  
program available through local Trane  
sales offices.  
Part Load Performance  
Actual air-conditioning system loads are  
frequently less than full-load design  
conditions. Depending on the number of  
chillers on the job and the load profile,  
chillers may operate at full load a small  
percentage of the time. With their  
excellent part-load performance  
characteristics and highly energy-  
efficient operation, Series R chillers can  
provide significant operating savings at  
these part-load conditions.  
12  
RLC-PRC020-EN  
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Model  
Nomenclature  
RTH  
D
U
5
D
6
2
7
F
8
0
9
A0  
U
A
G
3
15  
A
16  
4
17  
L
18  
A
19  
L
20  
G
21  
3
22  
F
23  
2
24  
L
25  
A
L
1,2,3 4  
10,11 12  
13 14  
26 27  
Digits 01, 02, 03 Series R™  
Digit 09 Specials  
Digit 18 Evaporator Water Connection  
L = Left Hand Evaporator Connection  
R = Right Hand Evaporator Connection  
RTH = Series R  
X = No specials  
C = All specials denoted by digits elsewhere  
S = Uncategorized special not denoted by  
other digits  
Digit 04 Dev Sequence  
D = 4th Major Development  
Digit 19 Evaporator Connection Type  
A = Standard Grooved Pipe  
Digit 05 Design Control  
U = WCBU  
Digits 10, 11 Design Sequence  
** = First Design, etc. increment when parts  
are affected for service purposes  
Digit 20 Evaporator Waterside Pressure  
L = 150 psi  
H = 300 psi  
Digit 06 Compressor Frame  
B = B Compressor  
Digit 12 Agency Listing  
X = No agency listing  
U = C/UL  
C = C Compressor  
Digit 21 Condenser  
B = B Frame  
D = D Frame  
E = E Frame  
F = F Frame  
G = G Frame  
D = D Compressor  
E = E Compressor  
Digit 13 Pressure Vessel Code  
A = ASME  
L = Chinese Pressure Vessel Code  
Digit 07 Compressor Capacity  
1 = Smaller Capacity for Frame  
2 = Larger Capacity for Frame  
3 = 50Hz Capacity  
Digit 14 Evaporator Frame  
B = B Frame  
Digit 22 Condenser Capacity  
1 = Tube count #1  
Digit 08 Unit Power Supply  
A = 200V/60Hz/3Ph power  
C = 230V/60Hz/3Ph power  
D = 380V/60Hz/3Ph power  
R = 380V/50Hz/3Ph power  
T = 400V/50Hz/3Ph power  
U = 415V/50Hz/3Ph power  
F = 460V/60Hz/3Ph power  
H = 575V/60Hz/3Ph power  
C = C Frame  
2 = Tube count #2  
D = D Frame  
3 = Tube count #3  
E = E Frame  
4 = Tube count #4  
F = F Frame  
5 = Tube count #5  
G = G Frame  
Digit 23 Condenser Tube Type  
A = Enhanced Fin Copper  
B = Smooth Bore Copper  
Digit 15 Evaporator Capacity  
1 = Tube count #1  
2 = Tube count #2  
C = Smooth Bore 90/10 CU/NI  
3 = Tube count #3  
4 = Tube count #4  
Digit 24 Condenser Passes  
2 = 2 Pass  
5 = Tube count #5  
6 = Tube count #6  
Digit 25 Condenser Water Connection  
L = Left Hand Connection  
R = Right Hand Connection  
Digit 16 Evaporator Tube Type  
A = Enhanced Fin Copper  
Digit 17 Evaporator Water Pass  
Configuration  
Digit 26 Condenser Connection Type  
A = Standard Grooved Pipe  
C = Marine  
2 = 2 pass  
3 = 3 pass  
4 = 4 pass  
Digit 27 Condenser Waterside Pressure  
L = 150 psi  
H = 300 psi  
RLC-PRC020-EN  
13  
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Model  
Nomenclature  
A
V
X
Q
X
E
X
A
A
B
D
Y
444  
D
A
44  
X
A
4
X
X
49  
X
50  
R
51  
X
52  
V
53  
X
54  
28 29 30 31 32 33 34 35 36 37 38 39 40,41,42 43  
45 46 47 48  
Digit 28 Condenser Leaving Water  
Temperature  
Digit 48 External Chilled Water and Current  
Limit Setpoint  
X = None  
4 = 4-20mA input  
2 = 2-10Vdc  
Digit 38 Factory Test  
X = Standard Test  
C = Witness Test  
A = Standard  
D = Performance Test  
Digit 29 Refrigerant Specialties  
X = No Refrigerant Isolation Valves  
V = With Refrigerant Isolation Valves  
Digit 39 Starter Type  
Y = Wye Delta Closed Transition Starter  
A = Solid State Starter  
Digit 49 External Base Loading  
X = None  
4 = 4-20mA input  
2 = 2-10Vdc input  
Digit 30 Oil Cooler  
X = Without Oil Cooler  
C = With Oil Cooler  
Digits 40, 41, 42 Design RLA (for starter)  
*** = Selection Assigned  
Digit 50 Icemaking  
X = None  
A = Icemaking with Relay  
B = Icemaking without Relay  
Digit 31 Thermal Insulation  
X = No Insulation  
Q = Factory Installed Insulation  
Digit 43 Power Line Connection Type  
A = Terminal Blocks  
B = Mechanical Disconnect Switch  
D = Circuit Breaker  
F = High Interrupt Circuit Breaker  
H = Ground Fault Circuit Breaker  
J = Ground Fault High Interrupt Circuit  
Breaker  
Digit 32 Acoustic Insulation  
X = No Insulation  
A = Standard Insulation  
Digit 51 Programmable Relays  
X = None  
R = With  
Digit 33 Control, Label, and Literature  
Language  
E = English  
Digit 52 Chilled Water Reset  
X = Chilled Water Reset Return Water  
T = Chilled Water Reset Outdoor Air  
Temperature  
Digit 44 Enclosure Type  
A = NEMA 1  
Digit 34 Safety Devices  
X = Standard  
Digit 45 Under/Over Voltage Protection  
X = None  
U = With Under/Over Voltage Protection  
Digit 53 Control Outputs  
X = None  
Digit 35 Factory Charge  
A = Factory Refrigerant Charge (134a)  
B = Factory Nitrogen Charge  
V = Condenser Regulating Valve Control &  
Percent RLA  
Digit 46 Operator Interface Language  
A = Dyna-View/English  
D = Dyna-View/French  
P = Condenser Pressure (% HPC) & Percent  
RLA  
Digit 36 Shipping Package  
A = Standard  
B = Standard + Shrink Wrap  
C = Standard + Skid  
D = Chiller Differential Pressure & Percent  
RLA  
G = Dyna-View/Traditional Chinese  
H = Dyna-View/Simple Chinese  
J = Dyna-View/Japanese  
K = Dyna-View/Portuguese  
L = Dyna-View/Korean  
Digit 54 Refrigerant Monitor Input  
X = None  
A = 100 ppm / 4-20mA  
B = 1000 ppm / 4-20mA  
C = 100 ppm / 2-10Vdc  
D = 1000 ppm / 2-10Vdc  
D = Standard + Skid + Shrink Wrap  
M = Dyna-View/Thai  
Digit 37 Flow Switch  
X = No Flow Switch  
Digit 47 Digital Communication Interface  
X = None  
4 = Tracer Interface  
5 = LCI-C (LonTalk)  
A = Evaporator (NEMA 1)  
B = Evaporator and Condenser (NEMA 1)  
C = Evaporator (Vapor Proof)  
D = Evaporator and Condenser (Vapor Proof)  
14  
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General Data  
Nominal Data  
Nominal Compressor B1  
B2  
C1  
C2  
D1  
D2  
D3  
E3  
Tonnage (60 Hz)  
Tonnage (50 Hz)  
175-200  
125-150  
200-225  
150-175  
225-275  
175-225  
275-325  
225-275  
325-400  
275-325  
375-450  
300-350  
N/A  
N/A  
325-375 375-450  
Notes:  
1. Chiller selections can be optimized through the use of the ARI-Certified Series R selection program and by contacting your  
local Trane sales office.  
General Data  
Evaporator  
Water Storage  
Condenser  
Water Storage  
Refrigerant  
Charge  
Compressor  
Code  
B1  
Evaporator  
Code  
B1  
Condenser  
Code  
B1  
Refrigerant  
Type  
Gallons  
41  
55  
45  
58  
45  
52  
82  
52  
78  
136  
69  
102  
144  
74  
107  
159  
74  
Liters  
155  
208  
170  
220  
170  
197  
310  
197  
295  
515  
261  
386  
545  
280  
405  
602  
280  
405  
602  
Gallons  
Liters  
106  
117  
110  
129  
110  
121  
226  
121  
178  
299  
166  
216  
344  
178  
231  
367  
178  
231  
367  
lb  
kg  
28  
31  
29  
34  
29  
32  
60  
32  
47  
79  
44  
57  
91  
47  
61  
97  
47  
61  
97  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
HFC-134a  
410  
490  
410  
490  
420  
490  
525  
490  
490  
700  
475  
625  
700  
475  
625  
700  
475  
625  
700  
186  
222  
186  
222  
191  
222  
238  
222  
222  
318  
216  
284  
318  
216  
284  
318  
216  
284  
318  
B1  
B2  
B2  
C1  
C1  
C1  
C2  
C2  
C2  
D1  
D1  
D1  
D2/D3  
D2/D3  
D2/D3  
E3  
E3  
E3  
C1  
B2  
C2  
D6  
D5  
E1  
D4  
D3  
G1  
D1  
F1  
G2  
D2  
F2  
G3  
D2  
D1  
B2  
D2  
E5  
E4  
F1  
E4  
E3  
G1  
E1  
F2  
G2  
E2  
F3  
G3  
E2  
F3  
F2  
G3  
107  
159  
G3  
RLC-PRC020-EN  
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General Data  
Minimum/Maximum Evaporator Flow Rates (GPM)  
Two Pass  
Three Pass  
Four Pass  
Evaporator  
Code  
B1  
Nominal  
Max Conn Size (In.)  
Nominal  
Max Conn Size (In.)  
Nominal  
Max Conn Size (In.)  
Min  
303  
346  
346  
375  
498  
541  
584  
422  
422  
352  
487  
676  
725  
-  
Min  
200  
233  
254  
276  
330  
357  
389  
281  
281  
233  
357  
454  
487  
606  
660  
747  
Min  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
454  
492  
557  
1104  
1266  
1412  
1531  
1812  
1980  
2131  
1542  
1542  
1287  
1980  
2478  
2667  
-  
8
8
8
8
8
8
8
8
8
8
8
10  
10  
-  
-  
-  
736  
844  
941  
6
6
6
6
8
8
8
8
8
8
8
8
8
10  
10  
10  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
1666  
1807  
2050  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
8
B2  
C1  
C2  
D1  
D2  
D3  
D4  
D5  
D6  
E1  
F1  
F2  
G1  
G2  
G3  
1022  
1206  
1320  
1417  
1028  
1028  
860  
1320  
1655  
1780  
2218  
2413  
2732  
-  
-  
-  
-  
8
8
Notes:  
1. All water connections are grooved pipe.  
Minimum/Maximum Evaporator Flow Rates (Liters/Second)  
Two Pass  
Three Pass  
Four Pass  
Evaporator  
Code  
B1  
Nominal  
Max Conn Size (mm) Min  
Nominal  
Max Conn Size (mm) Min  
Nominal  
Max Conn Size (mm)  
Min  
19  
22  
22  
23  
31  
34  
37  
27  
27  
22  
28  
43  
46  
-  
-  
-  
70  
80  
89  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
250  
250  
-  
13  
15  
16  
17  
21  
23  
25  
18  
18  
15  
23  
29  
31  
38  
42  
47  
46  
53  
59  
65  
76  
83  
89  
65  
65  
54  
83  
104  
112  
140  
152  
172  
150  
150  
150  
150  
200  
200  
200  
200  
200  
200  
200  
200  
200  
250  
250  
250  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
29  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
105  
114  
129  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
200  
200  
200  
B2  
C1  
C2  
D1  
D2  
D3  
D4  
D5  
D6  
E1  
F1  
F2  
G1  
G2  
G3  
97  
114  
125  
134  
97  
97  
81  
125  
156  
168  
-  
-  
-  
-  
-  
31  
35  
Notes:  
1. All water connections are grooved pipe.  
Minimum/Maximum Condenser Flow Rates  
Minimum/Maximum Condenser Flow Rates  
(Liters/Second)  
(GPM)  
Two Pass  
Two Pass  
Condenser  
Code  
B1  
Nominal  
Max Conn Size (mm)  
Condenser  
Code  
B1  
Nominal  
Max Conn Size (In.)  
Min  
15  
16  
15  
16  
22  
24  
25  
19  
16  
28  
27  
29  
33  
41  
45  
Min  
230  
255  
230  
255  
350  
380  
390  
295  
250  
450  
430  
460  
530  
650  
710  
54  
59  
54  
59  
81  
88  
90  
68  
57  
104  
98  
107  
124  
149  
164  
150  
150  
150  
150  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
850  
935  
850  
6
6
6
6
8
8
8
8
8
8
8
8
8
8
8
B2  
D1  
D2  
E1  
E2  
E3  
E4  
E5  
F1  
F2  
F3  
G1  
G2  
G3  
B2  
D1  
D2  
E1  
E2  
E3  
E4  
E5  
F1  
F2  
F3  
G1  
G2  
G3  
935  
1280  
1390  
1420  
1080  
910  
1650  
1560  
1700  
1960  
2360  
2600  
Notes:  
Notes:  
1. All water connections are grooved pipe.  
1. All water connections are grooved pipe.  
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Electrical Data  
and Connections  
Compressor Motor Electrical Data (60 Hertz)  
Nominal Voltage  
Voltage  
200  
180/  
220  
230  
208/  
254  
174  
484  
818  
2617  
249  
698  
936  
2901  
329  
918  
1532  
4966  
380  
342/  
418  
174  
291  
488  
1561  
249  
421  
558  
1727  
329  
549  
850  
2755  
460  
414/  
506  
174  
241  
400  
1280  
249  
349  
469  
1453  
329  
455  
730  
2366  
575  
516/  
633  
174  
193  
329  
1053  
249  
279  
375  
1162  
329  
367  
612  
1984  
Compressor  
Code  
Utilization Range  
Max kW  
174  
B1, B2  
RLA @ Max kW  
LRAY  
557  
970  
LRAD  
Max kW  
3103  
249  
C1, C2  
RLA @ Max kW  
LRAY  
812  
1173  
3634  
329  
LRAD  
Max kW  
D1, D2  
Notes:  
RLA @ Max kW  
LRAY  
1047  
1690  
5477  
LRAD  
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  
Voltage  
380  
342/  
418  
139  
233  
391  
1229  
201  
349  
456  
1414  
271  
455  
711  
2303  
288  
488  
711  
2303  
400  
360/  
440  
145  
233  
412  
1296  
209  
349  
480  
1488  
280  
455  
748  
2424  
301  
488  
748  
2424  
415  
374/  
457  
148  
233  
428  
1348  
213  
349  
498  
1544  
284  
455  
776  
2515  
306  
488  
776  
2515  
Compressor  
Code  
Utilization Range  
Max kW  
B1, B2  
RLA @ Max kW  
LRAY  
LRAD  
Max kW  
RLA @ Max kW  
LRAY  
C1, C2  
LRAD  
Max kW  
RLA @ Max kW  
LRAY  
D1, D2, D3  
LRAD  
Max kW  
RLA @ Max kW  
LRAY  
E3  
LRAD  
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.  
Electrical Connections  
Starter Panel  
Connection  
Selection  
RLA  
Lug Size  
L1-L3 (Each Phase)  
(2) #4-500 MCM  
(4) 4/0-500 MCM  
(1) #4-350 MCM  
(2) 2/0-250 MCM  
(2) 3/0-350 MCM  
(2) #1-500 MCM  
(4) 4/0-500 MCM  
Terminals Only  
000-760  
761-935  
000-185  
186-296  
297-444  
445-592  
593-888  
Main Circuit  
Breaker or  
Non-Fused  
Disconnect Switch  
Note:  
1. Lug sizes are independent of starter type.  
RLC-PRC020-EN  
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Electrical Data  
and Connections  
18  
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Electrical Data  
and Connections  
RLC-PRC020-EN  
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Dimensions and  
Weights  
Shipping and Operating Weights  
Compressor  
Code  
B1  
Evaporator  
Code  
B1  
Condenser  
Code  
B1  
Operating Weight  
Shipping Weight  
(lbs)  
(kg)  
(lbs)  
(kg)  
9867  
4,476  
4,787  
4,545  
4,832  
6,077  
6,202  
7,175  
6,201  
6,824  
8,943  
6,978  
7,955  
9,555  
7,062  
8,264  
9,816  
7,134  
8,326  
9,882  
9292  
9837  
9402  
9953  
4,215  
4,462  
4,265  
4,515  
5,797  
5,884  
6,676  
5,884  
6,351  
8,130  
6,551  
7,342  
8,667  
6,605  
7,629  
8,849  
6,677  
7,691  
8,914  
B1  
C1  
D1  
B2  
D2  
E5  
E4  
F1  
E4  
E3  
G1  
E1  
F2  
G2  
E2  
F3  
G3  
E2  
F3  
10554  
10019  
10653  
13397  
13673  
15818  
13672  
15044  
19715  
15385  
17537  
21065  
15570  
18220  
21641  
15728  
18356  
21786  
B2  
B2  
B2  
C2  
C1  
D6  
12780  
12973  
14718  
12972  
14002  
17923  
14443  
16187  
19107  
14562  
16820  
19508  
14720  
16956  
19653  
C1  
D5  
C1  
E1  
C2  
D4  
C2  
D3  
C2  
G1  
D1  
D1  
D1  
F1  
D1  
G2  
D2, D3  
D2, D3  
D2, D3  
E3  
D2  
F2  
G3  
D2  
E3  
E3  
F2  
G3  
G3  
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.  
20  
RLC-PRC020-EN  
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Dimensions and  
Weights  
BBB Configuration  
Recommended Clearances  
36" (914 mm)  
Front  
Back  
36" (914 mm)  
Either End  
Other End*  
Top  
36" (914 mm)  
108" (2743 mm)  
36" (914 mm)  
* Clearance for tube removal  
Note:  
1. Dimensions are based on 3 Pass Evap / 2 Pass  
Cond and LH/LH water connections. Refer to  
submittals for exact configuration.  
2. Refer to the Nominal Capacity Data table in the  
General Data section for capacity ranges of each  
compressor.  
RLC-PRC020-EN  
21  
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Dimensions and  
Weights  
BCD Configuration  
Recommended Clearances  
36" (914 mm)  
Front  
Back  
36" (914 mm)  
Either End  
Other End*  
Top  
36" (914 mm)  
126" (3200 mm)  
36" (914 mm)  
* Clearance for tube removal  
Note:  
1. Dimensions are based on 3 Pass Evap / 2 Pass  
Cond and LH/LH water connections. Refer to  
submittals for exact configuration.  
2. Refer to the Nominal Capacity Data table in the  
General Data section for capacity ranges of each  
compressor.  
22  
RLC-PRC020-EN  
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Dimensions and  
Weights  
CDE, DDE, EDE Configuration  
Recommended Clearances  
Front  
Back  
Either End  
Other End*  
Top  
36" (914 mm)  
36" (914 mm)  
36" (914 mm)  
108" (2743 mm)  
36" (914 mm)  
* Clearance for tube removal  
Note:  
1. Dimensions are based on 3 Pass Evap / 2 Pass  
Cond and LH/LH water connections. Refer to  
submittals for exact configuration.  
2. Refer to the Nominal Capacity Data table in the  
General Data section for capacity ranges of each  
compressor.  
RLC-PRC020-EN  
23  
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Dimensions and  
Weights  
CEF Configuration  
Recommended Clearances  
36" (914 mm)  
Front  
Back  
36" (914 mm)  
Either End  
Other End*  
Top  
36" (914 mm)  
126" (3200 mm)  
36" (914 mm)  
* Clearance for tube removal  
Note:  
1. Dimensions are based on 3 Pass Evap / 2 Pass  
Cond and LH/LH water connections. Refer to  
submittals for exact configuration.  
2. Refer to the Nominal Capacity Data table in the  
General Data section for capacity ranges of each  
compressor.  
24  
RLC-PRC020-EN  
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Dimensions and  
Weights  
DFF, EFF Configuration  
Recommended Clearances  
Front  
Back  
Either End  
Other End*  
Top  
36" (914 mm)  
36" (914 mm)  
36" (914 mm)  
126" (3200 mm)  
36" (914 mm)  
* Clearance for tube removal  
Note:  
1. Dimensions are based on 3 Pass Evap / 2 Pass  
Cond and LH/LH water connections. Refer to  
submittals for exact configuration.  
2. Refer to the Nominal Capacity Data table in the  
General Data section for capacity ranges of each  
compressor.  
RLC-PRC020-EN  
25  
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Dimensions and  
Weights  
CGG, DGG, EGG Configuration  
Recommended Clearances  
Front  
Back  
Either End  
Other End*  
Top  
36" (914 mm)  
36" (914 mm)  
36" (914 mm)  
126" (3302 mm)  
36" (914 mm)  
* Clearance for tube removal  
Note:  
1. Dimensions are based on 3 Pass Evap / 2 Pass  
Cond and LH/LH water connections. Refer to  
submittals for exact configuration.  
2. Refer to the Nominal Capacity Data table in the  
General Data section for capacity ranges of each  
compressor.  
26  
RLC-PRC020-EN  
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Mechanical  
Specifications  
General  
All water pass arrangements are  
high compressor discharge  
temperature  
lost communication between modules  
electrical distribution faults: phase loss,  
phase imbalance, or phase reversal  
external and local emergency stop  
starter transition failure  
Exposed metal surfaces are painted with  
air-dry beige, direct-to-metal, single-  
component paint. Each unit ships with  
full operating charges of refrigerant and  
oil. Molded neoprene isolation pads are  
supplied for placement under all support  
points. Startup and operator instruction  
by factory-trained service personnel are  
included.  
available with grooved connections (150  
or 300 psig waterside). All connections  
may be either right- or left-handed.  
Waterside shall be hydrostatically tested  
at 1.5X design working pressure.  
Refrigerant Circuit  
An electronically controlled expansion  
valve is provided to maintain proper  
refrigerant flow.  
The panel also includes machine  
protection shutdown with automatic  
reset for the following correctable  
conditions:  
momentary power loss  
under/over voltage  
Compressor and Motor  
Unit Controls (CH530)  
The unit is equipped with a semi-  
hermetic, direct-drive, 3600-rpm (3000  
rpm @ 50 Hz) rotary compressor that  
includes a capacity control slide valve, oil  
sump heater, and differential pressure  
refrigerant oil flow system. Four  
pressure-lubricated, rolling-element  
bearing groups support the rotating  
assembly.  
The microprocessor-based control panel  
is factory-installed and factory-tested.  
The control system is powered by a  
control power transformer, and will load  
and unload the chiller through  
adjustment of the compressor slide  
valve. Microprocessor-based chilled  
water reset based on return water is  
standard.  
loss of evaporator or condenser water  
flow  
When a fault is detected, the control  
system conducts more than 100  
diagnostic checks and displays results.  
The display will identify the fault,  
indicate date, time, and operating mode  
at time of occurrence, and provide type  
of reset required and a help message.  
The diagnostic history will display the  
last ten diagnostics with their times and  
dates of occurrence.  
The motor is a suction gas-cooled,  
hermetically sealed, two-pole, squirrel  
cage induction-type.  
The CH530 microprocessor  
automatically acts to prevent unit  
shutdown due to abnormal operating  
conditions associated with low  
evaporator refrigerant temperature, high  
condensing temperature, and/or motor  
current overload. If an abnormal  
operating condition continues and the  
protective limit is reached, the machine  
should shut down.  
Evaporator and Condenser  
Shells are carbon steel plate. The  
evaporator and condenser are designed,  
tested, and stamped in accordance with  
ASME Code for refrigerant-side/  
working-side pressure of 200 psig.  
Clear Language Display Panel  
Factory-mounted to the control panel  
door, the operator interface has an LCD  
touch-screen display for operator input  
and information output. This interface  
provides access to the following  
information: evaporator report,  
condenser report, compressor report,  
ASHRAE Guideline 3 report, operator  
settings, service settings, service tests,  
and diagnostics. All diagnostics and  
messages are displayed in clear  
language.”  
All tube sheets are made of carbon steel;  
tubes are mechanically expanded into  
tube sheets and mechanically fastened  
to tube supports. Evaporator tubes are  
1.0-inch (25.4 mm) diameter and  
condenser tubes are 0.75-inch  
(19.05 mm) diameter. Both types can be  
individually replaced. Standard tubes are  
externally finned, internally enhanced  
seamless copper with lands at all tube  
sheets.  
The panel includes machine protection  
shutdown requiring manual reset for the  
following conditions:  
low evaporator refrigerant temperature  
and pressure  
high condenser refrigerant pressure  
low oil flow  
critical sensor or detection circuit faults  
motor current overload  
RLC-PRC020-EN  
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Mechanical  
Specifications  
Data contained in available reports  
includes:  
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, and  
volts  
Unit-Mounted Starter  
The unit is supplied with a NEMA 1 type  
enclosure with top power-wiring access  
and three-phase, solid state overload  
protection. The starter is available in a  
Wye-Delta configuration, factory-  
mounted and fully pre-wired to the  
compressor motor and control panel. A  
factory-installed, factory-wired 600VA  
control power transformer provides all  
unit control power (120 VAC secondary)  
and CH530 module power (24 VAC  
secondary). Optional starter features  
include circuit breakers, ground fault  
circuit breakers, and mechanical, non-  
fused disconnects.  
All necessary settings and setpoints are  
programmed into the microprocessor-  
based controller via the operator  
interface. The controller is capable of  
receiving signals contemporaneously  
from a variety of control sources, in any  
combination, and priority order of  
control sources can be programmed.  
The control source with priority  
determines active setpoints via the  
signal 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 an  
external source (interface optional;  
control source not supplied)  
Trane Tracer Summitsystem  
(interface optional)  
Generic BAS (optional points; control  
source not supplied)  
LonTalk LCI-C (interface optional;  
control source not supplied)  
Literature Order Number  
File Number  
RLC-PRC020-EN  
PL-RF-RLC-000-PRC020-EN-0403  
RLC-DS-6-0899  
Supersedes  
Trane  
A business of American Standard Companies  
Stocking Location  
Electronic Only  
For more information, contact  
your local sales office or  
e-mail us at [email protected].  
Trane has a policy of continuous product and product data improvement and reserves the right to change  
design and specifications without notice.  
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