Trane RTHD User Manual

Series R™ Helical Rotary
Liquid Chillers

Model RTHD
175-450 Tons (60 Hz)
125-450 Tons (50 Hz)

Built for Industrial and Commercial Applications

RLC-PRC020-ENApril 2003

Introduction

To meet a wide range of applications in
the medium-tonnage, water-cooled
market, Trane is proud to introduce the
model RTHD helical rotary liquid chiller.
The introduction of this next-generation
chiller an exciting step forward in
application versatility, ease of
installation, control precision, reliability,
energy-efficiency, and operational cost­effectiveness. The new RTHD chiller is
designed to deliver proven Series R
performance, plus all the benefits of an
advanced heat transfer design and a
low-speed, direct-drive compressor.

Important Design Advances
and New Features

Major design advances include:

• Higher full-load energy efficiency
reduces both operating and life-cycle
costs.

• CH530 controls enable:

- scrolling access to inputs and

operating information via the LCD
touch-screen display;

- freedom from interoperability

concerns with LonMark
communications;

- job-specific communication options

that allow greater reporting flexibility.

• Improved startup temperature

capabilities and reduced sensitivity to
condenser water temperatures alleviate
the most common startup concerns.

• Removed Liquid Vapor Separator,
providing lighter unit weight and
simplified refrigerant piping, for less
expensive handling, separation, and
installation.

The industrial-grade design of the Series
R helical rotary chiller is ideal for both
industrial and commercial markets, in
applications such as office buildings,
hospitals, schools, retail buildings, and
industrial facilities. The linear unloading
compressor, wide operating temperature
range, advanced controls, electronic
expansion valve, short anti-recycle
timers, and industry-leading efficiencies
mean that this latest Trane Series R
chiller is the perfect choice for tight
temperature control in almost any
application temperatures, and under
widely varying loads.

RLC-PRC020-EN© 2003 American Standard Inc. All rights reserved.

Contents

Introduction

Features and Benefits

Options

Display

Application Considerations

Selection Procedure

Model Nomenclature

General Data

Electrical Data and Connections

Dimensions and Weights

Mechanical Specifications

2

4

6

8

9

11

13

15

17

20

27

RLC-PRC020-EN

3

Features and
Benefits

Application Versatility and High
Performance

• 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 five­minute start-to-start anti-recycle timer
allows tight chilled water temperature
control in constant or transient low­load applications.

• LonMark communications capability
provides excellent, trouble-free
interoperability.

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

• 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-to­order 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 double­width doors.

• 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 in­person and/or documented system
performance verification.

• CH530 controls easily interface with
Tracer Summit™ building automation
systems through single twisted-pair
wire.

Pueblo

Business Unit

RLC-PRC020-EN4

Features and
Benefits

State-of-the-Art, Precision Control

• Microprocessor-based CH530 controls
monitor and maintain optimal
operation of the chiller and its
associated sensors, actuators, relays,
and switches, all of which are factory­assembled and extensively tested.

• Easy interface with computers hosting
Tracer Summit
energy management systems allows
the operator to efficiently optimize
comfort system performance and
minimize operating costs.

• 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
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.

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.

™

building automation/

™

attempts to maintain

• 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.

• 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.

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.

RLC-PRC020-EN

5

Options

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.

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).

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).

Smooth-Bore Condenser Tubes

Smooth-bore copper or premium cupro­nickel condenser tubes, 3/4" (19.05 mm)
in diameter with .035" (0.889 mm) wall
thickness, are available for high fouling
water applications.

Refrigerant Isolation Valves

Factory-installed condenser inlet and
outlet refrigerant valves allow isolation
of the full refrigerant charge in the
condenser while servicing the chiller.

Marine Water Boxes

Addition of marine water boxes for the
condenser allows tube cleaning without
water pipe interference.

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.

Tracer Summit Communications

Link to factory-installed, tested
communication board, via single
twisted-pair wiring, adds Tracer Summit
communications to the system.

LonTalk LCI-C Interface

LonTalk (LCI-C) communications
capabilities are available, with
communication link via single twisted­pair wiring to factory-installed, tested
communication board.

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.

External Current Limiting

External Current Limit Setpoint is
communicated to a factory-installed,
tested communication board through a
2-10Vdc or 4-20mA signal.

External Base Loading

External Base Loading is communicated
to a factory-installed and tested
communication board through a
2-10Vdc or 4-20mA signal.

Ice Making Control

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.

Programmable Relays

Default-set, factory-installed,
programmable relays allow the operator
to select four relay outputs from a list of
eight. Available relays are: Alarm­Latching, Alarm-Auto Reset, General
Alarm, Warning, Chiller Limit Mode,
Compressor Running, Head Pressure
Relief Request, and Tracer Control.

Chilled Water Reset – Outdoor Air
Temperature

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.)

Condenser-Regulating Valve Control

Chiller applies a Proportional Integrative
Control (PID) algorithm to control water
regulating valve via 0-10Vdc 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.

Condenser Pressure Output

Control system indicates chiller
differential pressure or condenser
pressure, based on a 0-10Vdc signal.

Refrigerant Monitor Input

Control system indicates refrigerant
monitor status of 0-100 or 0-1000 ppm
(user selectable), based on a 2-10Vdc /
4-20 mA signal.

Solid State Starter

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.

Under/Over-Voltage Protection

Unit receives protection against
variations in voltage. (Current lag and
spike protection is standard.)

RLC-PRC020-EN6

Options

Main Power Disconnect
Options:

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.

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.

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.

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.

Nitrogen Charge

Unit is shipped with a nitrogen holding
charge in lieu of refrigerant.

Seal Kit for Reassembly

Ideal for situations when the bolt­together construction of the RTHD will
be separated for installation, this seal kit
provides replacement gaskets and rings
for reassembly.

Performance and Witness Tests

ARI-certified RTHD Performance and
Witness Tests are available, based on
requested operating points, to certify
chiller performance before delivery.

RLC-PRC020-EN

7

Display

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.

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

• Radio and action buttons for easy, one­time actions and settings

• 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

• 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

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

valve, and head pressure control

— Pump status and override
— Chilled water reset, start point, ratio,

and outdoor start point

— External setpoints, including:

- chilled water

- current limit

- ice building

- base loading

— Display specifics, including:

- date

- format

- time

- display lockout

- display units

- language setting

- Reports, listed on a single tabbed
screen for easy access, including:

• ASHRAE, containing all guideline

3 report information

• Evaporator

• Condenser

• Compressor

— Evaporator, condenser, and

compressor reports containing all
operational information on
individual components, including:

- Water and air temperatures

- Refrigerant levels, temperatures,
and approach

- Oil pressure

- Flow switch status

- EXV position

- Head pressure control command

- Compressor starts and run-time

- Line phase percent RLA, amps, and
volts

— Alarm and diagnostic information,

including:

- Flashing alarms with touch-screen
button for immediate address of
alarm condition

- Scrollable list of last ten active
diagnostics

- Specific information on applicable
diagnostic from list of over one­hundred

- Automatic or manual resetting
diagnostic types

RLC-PRC020-EN8

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.

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.

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

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.

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.

Variable Evaporator Flow and Short
Evaporator Water Loops

Variable evaporator flow is an energy­saving 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.

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.

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.

RLC-PRC020-EN

9

Application
Considerations

Series Chiller Arrangements

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
compressor also has excellent
capabilities for “lift,” which affords an
opportunity for savings on the
evaporator and condenser water loops.

Like series arrangements on the
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.

design integrity with installation and
operating cost considerations can also
be obtained by consulting a Trane
representative and applying the Trane
System Analyzer program.

Water Treatment

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
responsibility for the results of using
untreated or improperly treated water.

This ideal balance of

Water Pumps

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.
water pump must not be used to stop
the chiller.

Acoustic Considerations

For chiller sound ratings, installation tips,
and considerations on chiller location,
pipe isolation, etc., refer to

Water-Cooled Series R Chillers Sound
Ratings and Installation Guide

information provided in this bulletin,
contact a certified sound consultant to
aid in proper mechanical room design
and treatment.

Important Note: The chilled

the Trane

. Using the

RLC-PRC020-EN10

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.

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
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.

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.

Unit Performance with Fluid Media
Other Than Water

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 heat­rejection media. When considering
selection of media other than water,
contact the local Trane sales office for
chiller selections and factory
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.

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.

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.

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.

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.

Selecting starters in the Wye-delta or
Solid State configuration lowers
expected inrush vs. the Delta (or “across­the-line”) configuration. A Solid State
Starter configuration lowers the
expected inrush by approximately 50
percent, while Wye-Delta lowers it by
approximately 66 percent.

RLC-PRC020-EN

11

Selection
Procedure

The RLA is based on the motor’s
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.

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.

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 energy­efficient operation, Series R chillers can
provide significant operating savings at
these part-load conditions.

System Considerations

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
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.

RLC-PRC020-EN12

Model
Nomenclature

RTH D U D 2 F 0 A0 U A G 3 A 4 L A L G 3 F 2 L A L

1,2,3 4 5 6 7 8 9 10,11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

Digits 01, 02, 03 – Series R

RTH = Series R

Digit 04 – Dev Sequence

D = 4th Major Development

Digit 05 – Design Control

U = WCBU

Digit 06 – Compressor Frame

B = B Compressor
C = C Compressor
D = D Compressor
E = E Compressor

Digit 07 – Compressor Capacity

1 = Smaller Capacity for Frame
2 = Larger Capacity for Frame
3 = 50Hz Capacity

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

™

Digit 09 – Specials

X = No specials
C = All specials denoted by digits elsewhere
S = Uncategorized special not denoted by

other digits

Digits 10, 11 – Design Sequence

** = First Design, etc. increment when parts

are affected for service purposes

Digit 12 – Agency Listing

X = No agency listing
U = C/UL

Digit 13 – Pressure Vessel Code

A = ASME
L = Chinese Pressure Vessel Code

Digit 14 – Evaporator Frame

B = B Frame
C = C Frame
D = D Frame
E = E Frame
F = F Frame
G = G Frame

Digit 15 – Evaporator Capacity

1 = Tube count #1
2 = Tube count #2
3 = Tube count #3
4 = Tube count #4
5 = Tube count #5
6 = Tube count #6

Digit 16 – Evaporator Tube Type

A = Enhanced Fin Copper

Digit 18 – Evaporator Water Connection

L = Left Hand Evaporator Connection
R = Right Hand Evaporator Connection

Digit 19 – Evaporator Connection Type

A = Standard Grooved Pipe

Digit 20 – Evaporator Waterside Pressure

L = 150 psi
H = 300 psi

Digit 21 – Condenser

B = B Frame
D = D Frame
E = E Frame
F = F Frame
G = G Frame

Digit 22 – Condenser Capacity

1 = Tube count #1
2 = Tube count #2
3 = Tube count #3
4 = Tube count #4
5 = Tube count #5

Digit 23 – Condenser Tube Type

A = Enhanced Fin Copper
B = Smooth Bore Copper
C = Smooth Bore 90/10 CU/NI

Digit 24 – Condenser Passes

2 = 2 Pass

Digit 25 – Condenser Water Connection

L = Left Hand Connection
R = Right Hand Connection

RLC-PRC020-EN

Digit 17 – Evaporator Water Pass
Configuration

2 = 2 pass
3 = 3 pass
4 = 4 pass

Digit 26 – Condenser Connection Type

A = Standard Grooved Pipe
C = Marine

Digit 27 – Condenser Waterside Pressure

L = 150 psi
H = 300 psi

13

Model
Nomenclature

A V X Q X E X A A B D Y 444 D A X A 4 X X X R X V X

28 29 30 31 32 33 34 35 36 37 38 39 40,41,42 43 44 45 46 47 48 49 50 51 52 53 54

Digit 28 – Condenser Leaving Water
Temperature

A = Standard

Digit 29 – Refrigerant Specialties

X = No Refrigerant Isolation Valves
V = With Refrigerant Isolation Valves

Digit 30 – Oil Cooler

X = Without Oil Cooler
C = With Oil Cooler

Digit 31 – Thermal Insulation

X = No Insulation
Q = Factory Installed Insulation

Digit 32 – Acoustic Insulation

X = No Insulation
A = Standard Insulation

Digit 33 – Control, Label, and Literature
Language

E = English

Digit 34 – Safety Devices

X = Standard

Digit 35 – Factory Charge

A = Factory Refrigerant Charge (134a)
B = Factory Nitrogen Charge

Digit 36 – Shipping Package

A = Standard
B = Standard + Shrink Wrap
C = Standard + Skid
D = Standard + Skid + Shrink Wrap

Digit 37 – Flow Switch

X = No Flow Switch
A = Evaporator (NEMA 1)
B = Evaporator and Condenser (NEMA 1)
C = Evaporator (Vapor Proof)
D = Evaporator and Condenser (Vapor Proof)

Digit 38 – Factory Test

X = Standard Test
C = Witness Test
D = Performance Test

Digit 39 – Starter Type

Y = Wye Delta Closed Transition Starter
A = Solid State Starter

Digits 40, 41, 42 – Design RLA (for starter)

*** = Selection Assigned

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 44 – Enclosure Type

A = NEMA 1

Digit 45 – Under/Over Voltage Protection

X = None
U = With Under/Over Voltage Protection

Digit 46 – Operator Interface Language

A = Dyna-View/English
D = Dyna-View/French
G = Dyna-View/Traditional Chinese
H = Dyna-View/Simple Chinese
J = Dyna-View/Japanese
K = Dyna-View/Portuguese
L = Dyna-View/Korean
M = Dyna-View/Thai

Digit 47 – Digital Communication Interface

X = None
4 = Tracer Interface
5 = LCI-C (LonTalk)

Digit 48 – External Chilled Water and Current
Limit Setpoint

X = None
4 = 4-20mA input
2 = 2-10Vdc

Digit 49 – External Base Loading

X = None
4 = 4-20mA input
2 = 2-10Vdc input

Digit 50 – Icemaking

X = None
A = Icemaking with Relay
B = Icemaking without Relay

Digit 51 – Programmable Relays

X = None
R = With

Digit 52 – Chilled Water Reset

X = Chilled Water Reset – Return Water
T = Chilled Water Reset – Outdoor Air

Temperature

Digit 53 – Control Outputs

X = None
V = Condenser Regulating Valve Control &

Percent RLA

P = Condenser Pressure (% HPC) & Percent

RLA

D = Chiller Differential Pressure & Percent

RLA

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

RLC-PRC020-EN14

General Data

Nominal Data

Nominal Compressor B1 B2 C1 C2 D1 D2 D3 E3
Tonnage (60 Hz) 175-200 200-225 225-275 275-325 325-400 375-450 N/A N/A
Tonnage (50 Hz) 125-150 150-175 175-225 225-275 275-325 300-350 325-375 375-450

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

Compressor Evaporator Condenser Water Storage Water Storage Refrigerant Charge

Code Code Code Gallons Liters Gallons Liters Type lb kg

B1 B1 B1 41 155 28 106 HFC-134a 410 186
B1 C1 D1 55 208 31 117 HFC-134a 490 222
B2 B2 B2 45 170 29 110 HFC-134a 410 186
B2 C2 D2 58 220 34 129 HFC-134a 490 222
C1 D6 E5 45 170 29 110 HFC-134a 420 191
C1 D5 E4 52 197 32 121 HFC-134a 490 222
C1 E1 F1 82 310 60 226 HFC-134a 525 238
C2 D4 E4 52 197 32 121 HFC-134a 490 222
C2 D3 E3 78 295 47 178 HFC-134a 490 222
C2 G1 G1 136 515 79 299 HFC-134a 700 318
D1 D1 E1 69 261 44 166 HFC-134a 475 216
D1 F1 F2 102 386 57 216 HFC-134a 625 284

D1 G2 G2 144 545 91 344 HFC-134a 700 318
D2/D3 D2 E2 74 280 47 178 HFC-134a 475 216
D2/D3 F2 F3 107 405 61 231 HFC-134a 625 284
D2/D3 G3 G3 159 602 97 367 HFC-134a 700 318

E3 D2 E2 74 280 47 178 HFC-134a 475 216

E3 F2 F3 107 405 61 231 HFC-134a 625 284

E3 G3 G3 159 602 97 367 HFC-134a 700 318

Evaporator Condenser Refrigerant

RLC-PRC020-EN

15

General Data

Minimum/Maximum Evaporator Flow Rates (GPM)

Evaporator Nominal Nominal Nominal

Code Min Max Conn Size (In.) Min Max Conn Size (In.) Min Max Conn Size (In.)

B1 303 1104 8 200 736 6 —- —- —-
B2 346 1266 8 233 844 6 —- —- —-
C1 346 1412 8 254 941 6 —- —- —-

C2 375 1531 8 276 1022 6 —- —- —-
D1 498 1812 8 330 1206 8 —- —- —-
D2 541 1980 8 357 1320 8 —- —- —-
D3 584 2131 8 389 1417 8 —- —- —-
D4 422 1542 8 281 1028 8 —- —- —-
D5 422 1542 8 281 1028 8 —- —- —-
D6 352 1287 8 233 860 8 —- —- —-

E1 487 1980 8 357 1320 8 —- —- —-

F1 676 2478 10 454 1655 8 —- —- —-

F2 725 2667 10 487 1780 8 —- —- —-
G1 —- —- —- 606 2218 10 454 1666 8
G2 —- —- —- 660 2413 10 492 1807 8
G3 —- —- —- 747 2732 10 557 2050 8

Notes:

1. All water connections are grooved pipe.

Two Pass Three Pass Four Pass

Minimum/Maximum Evaporator Flow Rates (Liters/Second)

Evaporator Nominal Nominal Nominal

Code Min Max Conn Size (mm) Min Max Conn Size (mm) Min Max Conn Size (mm)

B1 19 70 200 13 46 150 —- —- —-

B2 22 80 200 15 53 150 —- —- —-

C1 22 89 200 16 59 150 —- —- —-

C2 23 97 200 17 65 150 —- —- —-
D1 31 114 200 21 76 200 —- —- —-
D2 34 125 200 23 83 200 —- —- —-
D3 37 134 200 25 89 200 —- —- —-
D4 27 97 200 18 65 200 —- —- —-
D5 27 97 200 18 65 200 —- —- —-
D6 22 81 200 15 54 200 —- —- —-

E1 28 125 200 23 83 200 —- —- —-

F1 43 156 250 29 104 200 —- —- —-

F2 46 168 250 31 112 200 —- —- —-
G1 —- —- —- 38 140 250 29 105 200
G2 —- —- —- 42 152 250 31 114 200
G3 —- —- —- 47 172 250 35 129 200

Notes:

1. All water connections are grooved pipe.

Two Pass Three Pass Four Pass

Minimum/Maximum Condenser Flow Rates
(GPM)

Condenser Nominal

Code Min Max Conn Size (In.)

B1 230 850 6

B2 255 935 6
D1 230 850 6
D2 255 935 6

E1 350 1280 8

E2 380 1390 8

E3 390 1420 8

E4 295 1080 8

E5 250 910 8

F1 450 1650 8

F2 430 1560 8

F3 460 1700 8
G1 530 1960 8
G2 650 2360 8
G3 710 2600 8

Notes:

1. All water connections are grooved pipe.

Two Pass

Minimum/Maximum Condenser Flow Rates
(Liters/Second)

Condenser Nominal

Code Min Max Conn Size (mm)

B1 15 54 150

B2 16 59 150
D1 15 54 150
D2 16 59 150

E1 22 81 200

E2 24 88 200

E3 25 90 200

E4 19 68 200

E5 16 57 200

F1 28 104 200

F2 27 98 200

F3 29 107 200
G1 33 124 200
G2 41 149 200
G3 45 164 200

Notes:

1. All water connections are grooved pipe.

Two Pass

RLC-PRC020-EN16

Electrical Data
and Connections

Compressor Motor Electrical Data (60 Hertz)

Compressor Voltage 180/ 208/ 342/ 414/ 516/

Code Utilization Range 220 254 418 506 633

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

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

D1, D2 RLA @ Max kW 1047 918 549 455 367

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.

Nominal Voltage 200 230 380 460 575

Max kW 174 174 174 174 174

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

Max kW 249 249 249 249 249

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

Max kW 329 329 329 329 329

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

Compressor Motor Electrical Data (50 Hertz)

Compressor Voltage 342/ 360/ 374/

Code Utilization Range 418 440 457

B1, B2 RLA @ Max kW 233 233 233

C1, C2 RLA @ Max kW 349 349 349

D1, D2, D3 RLA @ Max kW 455 455 455

E3 RLA @ Max kW 488 488 488

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.

Nominal Voltage 380 400 415

Max kW 139 145 148

LRAY 391 412 428
LRAD 1229 1296 1348

Max kW 201 209 213

LRAY 456 480 498
LRAD 1414 1488 1544

Max kW 271 280 284

LRAY 711 748 776
LRAD 2303 2424 2515

Max kW 288 301 306

LRAY 711 748 776
LRAD 2303 2424 2515

RLC-PRC020-EN

Electrical Connections

Starter Panel Selection Lug Size

Connection RLA L1-L3 (Each Phase)

Terminals Only 000-760 (2) #4-500 MCM

Main Circuit 000-185 (1) #4-350 MCM

Breaker or 186-296 (2) 2/0-250 MCM

Non-Fused 297-444 (2) 3/0-350 MCM

Disconnect Switch 445-592 (2) #1-500 MCM

Note:

1. Lug sizes are independent of starter type.

761-935 (4) 4/0-500 MCM

593-888 (4) 4/0-500 MCM

17

Electrical Data
and Connections

RLC-PRC020-EN18

Electrical Data
and Connections

RLC-PRC020-EN

19

Dimensions and
Weights

Shipping and Operating Weights

Compressor Evaporator Condenser Operating Weight Shipping Weight

Code Code Code (lbs) (kg) (lbs) (kg)

B1 B1 B1 9867 4,476 9292 4,215
B1 C1 D1 10554 4,787 9837 4,462
B2 B2 B2 10019 4,545 9402 4,265
B2 C2 D2 10653 4,832 9953 4,515
C1 D6 E5 13397 6,077 12780 5,797
C1 D5 E4 13673 6,202 12973 5,884
C1 E1 F1 15818 7,175 14718 6,676
C2 D4 E4 13672 6,201 12972 5,884
C2 D3 E3 15044 6,824 14002 6,351

C2 G1 G1 19715 8,943 17923 8,130
D1 D1 E1 15385 6,978 14443 6,551
D1 F1 F2 17537 7,955 16187 7,342
D1 G2 G2 21065 9,555 19107 8,667

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

E3 D2 E2 15728 7,134 14720 6,677

E3 F2 F3 18356 8,326 16956 7,691

E3 G3 G3 21786 9,882 19653 8,914

Notes:

1. All weights +- 3%.

2. Shipping weights include standard 150 psig water boxes, refrigerant charge, and oil charge.

3. Operating weights include refrigerant, oil, and water charges.

RLC-PRC020-EN20

Dimensions and
Weights

BBB Configuration

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

Top 36" (914 mm)
* Clearance for tube 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.

Recommended Clearances

RLC-PRC020-EN

21

Dimensions and
Weights

BCD Configuration

Front 36" (914 mm)
Back 36" (914 mm)
Either End 36" (914 mm)
Other End* 126" (3200 mm)

Top 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.

Recommended Clearances

RLC-PRC020-EN22

Dimensions and
Weights

CDE, DDE, EDE Configuration

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

Top 36" (914 mm)
* Clearance for tube 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.

Recommended Clearances

RLC-PRC020-EN

23

Dimensions and
Weights

CEF Configuration

Front 36" (914 mm)
Back 36" (914 mm)
Either End 36" (914 mm)
Other End* 126" (3200 mm)

Top 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.

Recommended Clearances

RLC-PRC020-EN24

Dimensions and
Weights

DFF, EFF Configuration

Front 36" (914 mm)
Back 36" (914 mm)
Either End 36" (914 mm)
Other End* 126" (3200 mm)

Top 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.

Recommended Clearances

RLC-PRC020-EN

25

Dimensions and
Weights

CGG, DGG, EGG Configuration

Front 36" (914 mm)
Back 36" (914 mm)
Either End 36" (914 mm)
Other End* 126" (3302 mm)

Top 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.

Recommended Clearances

RLC-PRC020-EN26

Mechanical
Specifications

General

Exposed metal surfaces are painted with
air-dry beige, direct-to-metal, single­component 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.

Compressor and Motor

The unit is equipped with a semi­hermetic, 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 motor is a suction gas-cooled,
hermetically sealed, two-pole, squirrel
cage induction-type.

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.

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.

All water pass arrangements are
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.

Unit Controls (CH530)

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.

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.

The panel includes machine protection
shutdown requiring
following conditions:

• low evaporator refrigerant temperature
and pressure

• high condenser refrigerant pressure

• low oil flow

• critical sensor or detection circuit faults

• motor current overload

manual reset

for the

• 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

The panel also includes machine
protection shutdown with

reset

for the following correctable

conditions:

• momentary power loss

• under/over voltage

• 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.

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.”

automatic

RLC-PRC020-EN

27

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

All necessary settings and setpoints are
programmed into the microprocessor­based 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)

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, factory­mounted 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, non­fused disconnects.

Trane
A business of American Standard Companies
www.trane.com

For more information, contact
your local sales office or
e-mail us at [e-mail].

Literature Order Number

File Number

Supersedes

Stocking Location

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

RLC-PRC020-EN

PL-RF-RLC-000-PRC020-EN-0403

RLC-DS-6-0899

Electronic Only