Series R™ Helical Rotary
Liquid Chillers
Model RTHD
175-450 Tons (60 Hz)
125-450 Tons (50 Hz)
Built for Industrial and Commercial Applications
April 2003
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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 Summit™ building 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 Summit™ building automation/
energy management systems allows
the operator to efficiently optimize
comfort system performance and
minimize operating costs.
• Trane is the world’s 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 Control™ attempts 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 glycol— in 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 “LRA” and
“expected inrush” are 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 motor’s
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
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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
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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
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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.
16
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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.
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Electrical Data
and Connections
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Electrical Data
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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
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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.
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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
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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.
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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.
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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.
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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.
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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
27
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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 Summit™ system
(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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