Trane RTAA User Manual To The E02cdd52 8813 47c4 Bd8f 23c7b397fd7f

User Manual: Trane RTAA to the manual

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Air-Cooled Series R™

Rotary Liquid Chiller

Model RTAA

70 to 125 Tons

Built for the Industrial and Commercial Markets

RLC-PRC016-ENAugust 2002

RLC-PRC016-EN2

Features and

Benefits

You…

Like its chillers, Trane wants its

relationships with customers to last.

Trane is interested in maintaining long

term, loyal relationships. This

perspective means the point in time that

a customer purchases a chiller is the

beginning of a relationship, not the end.

Your business is important, but your

satisfaction is paramount.

Trane’s RTAA 70-125 was designed with

the end user’s requirements in mind.

Reliability, efficiency, sound, and

physical size were primary design

concerns in expanding the RTAA product

line down to 70 tons. The result is a

reliable chiller that will help you achieve

your bottom line goals.

RLC-PRC016-EN

Contents

Features and Benefits

Model Number Description

General Data

Selection Procedure

Application Considerations

Performance Adjustment Factors

Performance Data

Electrical Data

Jobsite Connections

Controls

Dimensional Data

Weights

Options

Typical Wiring Diagrams

Features Summary

Mechanical Specifications

The standard ARI rating condition

(54/44°F and 95°F) and IPLV are ARI

certified. All other ratings, including the

following, are outside the scope of the

certification program and are excluded:

• Glycol.

• 50 Hz.

• Remote evaporator models.

Water Chiller

Systems Business Unit

RLC-PRC016-EN4

Features and

Benefits

Improvements

The RTAA 70-125 offers the same high

reliability of its larger predecessor

coupled with lowered sound levels,

increased energy efficiency, and reduced

physical footprint, all due to its advanced

design, low speed/direct drive

compressor and proven Series R™

performance.

Some of the major advantages of the

Model RTAA 70-125 vs its larger

predecessor are:

•Higher energy efficiency

•Lower sound levels

•Smaller physical footprint

The Series R™ Model RTAA 70-125 is an

industrial grade design built for both the

industrial and commercial markets. It is

ideal for schools, hospitals, retailers,

office buildings, Internet service

providers and industrials.

ASHRAE Standard 90.1 and RTAA 70-

125 World Class Energy Efficiency…

The importance of energy efficiency

cannot be understated. Fortunately,

ASHRAE has created a guideline

emphasizing its importance.

Nonetheless, energy is often dismissed

as an operational cost over which the

owner has little control. That perception

results in missed opportunities for

energy efficiency, reduced utility bills,

and higher profits. Lower utility bills

directly affect profitability. Every dollar

saved in energy goes directly to the

bottom line. Trane’s RTAA 70-125 is one

way to maximize your profits.

ASHRAE Standard 90.1 & Executive

Order

- New technology applied to the

design, controls, and manufacturing

have created superior efficiency levels in

the RTAA 70-125 that are unmatched in

the industry. All Trane air-cooled chillers

meet the new efficiency levels mandated

by ASHRAE Standard 90.1. This new

standard requires higher efficiencies

than past technologies can deliver. The

US Federal Government has adopted

standard 90.1 and, in some cases,

requires even higher efficiencies.

Federal Executive Order mandates

energy consuming devices procured

must be in the top 25% of their class or

be at least 10% better than any product

standard for that product. In the case of

chillers, that product standard is

ASHRAE 90.1. Trane’s RTAA 70-125

meets and exceeds the efficiency

requirements of 90.1, with some units

meeting the “stretch goals” of Executive

Order.

Risk.

The US Federal Government has

adopted ASHRAE 90.1, and it’s expected

to be adopted domestically, if not

globally, in the future. Domestic

acceptance has already begun. Make

sure that your chillers as well as your

entire HVAC system complies, or you

may be caught retrofitting your project

with new equipment and paying extra

design dollars if the code is adopted

during construction.

Precise Capacity Control.

Trane’s

patented unloading system allows the

compressor to modulate infinitely and

exactly match building loads. At the

same time chilled water temperatures

will be maintained within +/- 1/2ºF of

setpoint, potentially eliminating the need

for external considerations to maintain

temperatures. Reciprocating and screw

chillers with stepped capacity control do

well to maintain chilled water

temperatures within 2ºF of setpoint.

Stepped control also results in

overcooling or undercooling your space

because rarely does the capacity of the

machine match the building load. The

result can be 10% higher energy bills.

Trane’s RTAA optimizes the part load

performance of your machine for energy

efficiency, precise temperature control

for all modes of operation, and your

personal comfort regardless of changing

conditions.

RLC-PRC016-EN

Features and

Benefits

Excellent Reliability

A building environment is expected to

be comfortable. When it is, no one says

a word. If it’s not… that’s a different

story. The same is true with chillers. No

one ever talks about chillers, yet alone

compressors, until they fail, and tenets

are uncomfortable and productivity is

lost. Trane’s helical rotary compressors

have a first year reliability rate of over

99%, which means our chillers stay

running when you need them.

Screw compressors were designed to

replace the inherent design flaws of a

reciprocating compressor. Trane’s helical

rotary compressor has successfully

achieved this goal, proven by the over

99% reliability rating of our compressor

in the first year of operation. A good

design like Trane’s should maintain this

level of reliability for several years of

chiller operation. Not all screw

compressors maintain a high reliability

and Trane is the only manufacturer that

will publish a reliability number. The

point is to make sure that you are getting

a reliable screw chiller design so that you

don’t end up with the downtime and lost

earnings that the industry is trying to

avoid by getting away from

reciprocating technology.

Fewer moving parts.

Trane’s helical

rotary compressors have only two major

rotating parts: the male and female rotor.

A reciprocating compressor can have

more than 15 times that number of

critical parts. Multiples of pistons,

valves, crankshafts, and connecting rods

in a reciprocating unit all represent

different failure paths for the

compressor. In fact, reciprocating

compressors can easily have a failure

rate four times that of a helical rotor.

Combine this with two to three

reciprocating compressors for each

helical rotary compressor on chillers of

equal tonnage, and statistics tell you it’s

a matter of time before you lose a

reciprocating compressor.

Robust parts.

Helical rotary

compressors are precisely machined

using state of the art processes from

solid metal bar stock. Tolerances are

maintained within a micron or less than

a tenth of the diameter of a human hair.

The resulting compressor is a robust yet

highly sophisticated assembly capable of

ingesting liquid refrigerant without risk

of damage. Contrast this to a

reciprocating compressor, which can be

destroyed by a single slug of liquid.

Series R™ Compressor Highlights

•Direct-drive, low speed for high

efficiency and reliability.

•Simple design with only four moving

parts, resulting in high reliability and

low maintenance.

•Field serviceable compressor for easy

maintenance.

•Precise rotor tip clearance for optimal

efficiency.

•Suction gas-cooled motor, resulting in

lower operating temperatures for

increased motor life, and giving the

capability for:

•Five-minute start-to-start/two minute

stop-to-start capability, which allows

for closer water loop temperature

control.

RLC-PRC016-EN6

Features and

Benefits

RTAA 70-125 Chiller Highlights

•High Reliability, with over 99%

compressor reliability rate in the first

year of operation, and Adaptive

Controls to keep the chiller on line

producing cold water during adverse

conditions.

•High Efficiency (all units exceed

ASHRAE 90.1 efficiency standard).

•Low sound levels.

•Small footprint, with smallest required

application space (operating footprint)

in the industry.

•Years of research, testing, and

successful applications. The Trane

helical rotary compressor has amassed

thousands of hours of testing, much of

it at severe operating conditions. Not

to mention the successful application

of RTAA chillers for over 11 years, with

a developed reputation as the industry

standard.

•Trouble free startup through factory

testing of compressor and completed

chiller and factory installation of chiller

accessories.

•+/- ½°F leaving water temperature

control, resulting from PID feed-

forward controls, and linear load

matching, also allowing for 10% flow

rate change per minute while

maintaining ± ½°F leaving water

temperature control.

Trane helical rotary screw compressor

component parts versus reciprocating

compressor components.

RLC-PRC016-EN

Features and

Benefits

Superior Full Load Efficiency

Precise Rotor Tip Clearances

Higher energy efficiency in a helical

rotary compressor is obtained by

reducing the rotor tip clearances. This

reduces the leakage between high and

low pressure cavities during

compression. Precise rotor tip clearance

is achieved with the latest manufacturing

and machining technology. Trane is the

first helical rotary compressor

manufacturer to electronically check

compressor parts machining accuracy as

part of the standard production process.

Optimized Compressor Parts Profiles

Rotor and slide valves are unique

designs, optimized for the air

conditioning application. The rotors are

designed for the pressure ranges in the

air conditioning application. The unloader

valve has a unique profile that resulted

from computer performance modeling in

typical part-load situations.

Advanced Heat Transfer Surfaces

Condenser and evaporator tubes use the

latest heat transfer technology for

increased efficiency.

Great Part Load Efficiency

With Trane Helical Rotary

Screw Compressors and

Electronic Expansion Valve

Trane Helical Rotary Screw Compressor

Means Superior Part Load Performance

The air-cooled Series R™ chiller has great

part-load performance. The combination

patented unloading system on the

“general purpose” compressor utilizes

the variable unloading valve for the

majority of the unloading function

similar to that of the slide valve. The

“general purpose” compressor also

uses a step unloader valve which is a

single unloading step to achieve the

minimum unloading point of the

compressor. The result of both of these

designs is optimized part-load

performance far superior to single

reciprocating compressors.

Optimum

Efficiencies

RLC-PRC016-EN8

Features and

Benefits

Electronic Expansion Valve

When coupled with Trane’s Adaptive

Control™ microprocessor, our electronic

expansion valve significantly improves

part-load performance of the Series R™

chiller by minimizing superheat in the

evaporator and allowing the chiller to

run at reduced condensing

temperatures. Chillers which use

conventional TXV’s must run at higher

head pressures and consume more

power than necessary at part-loads.

Additionally, the electronic expansion

valve and its controls allow much better

stability and control over dynamic load

and head changes. Under these

conditions a conventional TXV may

never achieve control stability and

extended periods of TXV “hunting” and

liquid slugging are common.

Capacity Control and Load Matching

Infinitely variable compressor

modulation allows the compressor

capacity to exactly match the building

cooling load. Reciprocating and screw

chillers that rely on stepped capacity

control must run at a capacity equal to or

greater than the load. Much of this

excess capacity is lost because

overcooling goes toward building latent

heat removal, causing the building to be

dried beyond normal comfort

requirements. The result is an increase in

chiller energy costs, particularly at the

part-load conditions at which the chiller

operates most of the time.

PID Chilled Water Setpoint

Control Through Slide Valve

Modulation

Maintain Chilled Water Supply Within

± 1/2°F of Setpoint

Chillers that have step capacity control

typically can only maintain water

temperature to around ± 2°F. With the

air-cooled Series R™ chiller, maintaining

temperature control has never been so

accurate.

Reduce Compressor Cycling

Modulating capacity control offers better

compressor reliability. Compressor

cycling, typical of reciprocating

compressors, will decrease compressor

component life. Parts like motors and

valves do not stand up well to excessive

compressor cycling.

Cutaway view of Trane’s electronic expansion valve.

RLC-PRC016-EN

Features and

Benefits

Trouble-Free Installation,

Start-Up and Operation

Adaptive Control™ Microprocessor

The RTAA 70-125 chiller offers advanced

microprocessor control and features the

Adaptive Control microprocessor. So

what is the Adaptive Control

microprocessor? Adaptive Control

means the Unit Control Module (UCM)

directly senses the control variables that

govern operation of the chiller: motor

current draw, evaporator temperature,

condenser temperature, etc.

When any of the variables approaches a

limit condition where the unit may be

damaged or shut down on a safety, the

UCM takes corrective action to avoid

shutdown and keep the chiller operating.

It does this through combined actions of

compressor slide valve modulation,

electronic expansion valve modulation

and fan staging. Additionally, the UCM

optimizes total unit power consumption

during normal operating conditions. No

other chiller control system in the

marketplace duplicates this

performance.

The End Of Most Nuisance Trip-Outs

And Unnecessary Service Calls?

Unnecessary service calls and unhappy

tenants are reduced. Only when the

UCM has exhausted the corrective

actions it can take and the unit is still

violating an operating limit will the unit

shut down. CONTROLS ON OTHER

CHILLERS TYPICALLY SHUT DOWN THE

CHILLER, QUITE PROBABLY JUST

WHEN IT IS NEEDED THE MOST.

For example:

A typical five-year-old chiller with dirty

coils might trip-out on high pressure

cutout on a 100°F day in August. A hot

day is just when comfort cooling is

needed the most. In contrast, the air-

cooled Series R™ chiller with an Adaptive

Control microprocessor will stage fans

on, modulate electronic expansion valve,

and modulate slide valve as it

approaches a high pressure cutout.

Thereby KEEPING THE CHILLER ON-

LINE JUST WHEN YOU NEED IT THE

MOST.

RLC-PRC016-EN10

Close Spacing Of Chiller

The air-cooled Series R™ chiller has the

tightest recommended side clearance in

the industry, four feet, but that is not all.

In situations where equipment must be

installed with less clearance than

recommended, such as frequently

occurs in retrofit and rooftop

applications, restricted air flow is

common. Conventional chillers may not

work at all. However, the air-cooled

Series R™ chiller with Adaptive Control™

microprocessor will simply make as

much chilled water as it can given the

actual installed conditions, stay on line

during any unforeseen abnormal

conditions, and optimize its

performance. Consult your Trane sales

engineer for more details.

Lower Service Expense

Nuisance service calls are avoided.

When there is a real problem that must

be corrected, the UCM’s extensive

diagnostics help assure that the problem

is quickly identified. Down time and

service expense are minimized. And with

the ability to communicate with the

Trane Integrated Comfort™ system or a

remote display panel, service problems

can be identified and diagnosed remote

to the installation.

Factory Testing Means Trouble-Free

Start-Up

All air-cooled Series R™ chillers are given

a complete functional test at the factory.

This computer-based test program

completely checks the sensors, wiring,

electrical components, microprocessor

function, communication capability,

expansion valve performance and fans.

In addition, each compressor is run

tested to verify capacity and power

consumption. The end result of this test

program is that the chiller arrives at the

jobsite fully tested and ready to go to

work.

Factory Installed And Tested Controls/

Options Speed Installation

All Series R™ chiller options, including

control power transformer, starter

disconnect, low ambient control,

ambient temperature sensor, low

ambient lockout, communication

interface and ice making controls are

factory installed and tested. Some

manufacturers send options in pieces to

be field installed. With Trane, the

customer saves on installation expense

and has assurance that ALL chiller

controls/options have been tested and

will function as expected.

Features and

Benefits

RLC-PRC016-EN

Features and

Benefits

Superior Control

Unit Control Module

Trane’s Adaptive Control™

microprocessor control system enhances

the air-cooled Series R™ chiller by

providing the very latest chiller control

technology.

State-of-the-Art Equipment

The 70 to 125 ton air-cooled chillers offer

the exclusive Trane Adaptive Control

logic with the Clear Language Display

(UCM). The Clear Language Display has

various functions that allow the operator

to read unit information and adjust

setpoints. The Clear Language Display

panel has 16 keys, the readout screen is a

two-line, 40 character liquid crystal with a

backlight. The backlight allows the

operator to read the display in low-light

conditions.

Unit Control Module Features

Equal Compressor Sequencing

Trane maximizes both compressor and

motor life by equalizing both the number

of starts and the operating hours. The

UCM will start the compressor with the

least number of starts and turn off the

compressor with the most operating

hours. Conventional “auto” lead-lag

control will equalize starts, but running

hours will typically be unequal.

Equalizing both starts and running hours

will provide equal compressor wear.

Internal “Built-In” Chiller Flow

Protection

The UCM automatically detects a no

waterflow condition. An external flow

switch is not required, which lowers

costs versus typical chillers. Built-in flow

protection also eliminates nuisance flow

switch problems.

Remote Clear Language Display Panel

for 70 to 125-ton air-cooled chillers.

RLC-PRC016-EN12

Easy Chiller System Logging

The UCM displays data required to log

the chiller system. The following

information is available either as

standard or as an option with the Air-

Cooled Series R™ Chiller microprocessor:

•Entering and leaving chilled water

temperatures

•Ambient air temperature

•Evaporator and condenser refrigerant

temperatures and pressures

•Compressor suction temperature

•Percent RLA for each compressor

•Percent line voltage

•Compressor starts and running hours

•Active setpoints:

chilled water setpoint

current limit setpoint

ice termination setpoint

low ambient lockout setpoint

•Over 90 diagnostic and operating

conditions

•Part failure diagnostics:

water temperature sensors

refrigerant temperature sensors

compressor contactors

Remote Display Panel

Trane air-cooled Series R™ 70-125 ton

chillers are available with a twisted pair

connection to an optional remote display

panel. Chiller operation can be controlled

similarly to the control interface on the

chiller itself. Through a twisted pair of

wires the unit can be turned on or off,

change the chilled water setpoint, and

display over 90 operating and diagnostic

conditions. The remote display panel can

be mounted indoors so access to chiller

information is just steps away,

eliminating any need to go outdoors or

on the roof.

The clear language display for chiller

sizes of 70-125 tons has the ability to

control multiple units. In a multiple unit

configuration, the Remote Clear

Language Display Panel has the

capability to communicate with up to

four units. Each unit requires a separate

communication link with the Remote

Display Panel.

Easy Interface To The Building

Management System

Controlling the air-cooled Series R™

chiller with building management

systems is state-of-the-art yet simple.

Chiller inputs include:

•Chiller enable/disable

•Circuit enable/disable

•Chilled water setpoint

•Current limit setpoint

•Ice making enable

Chiller outputs include:

•Compressor running indication

•Alarm indication (CKt 1/CKt2)

•Maximum capacity

Trane Chiller Plant Manager/ICS

The Tracer™ Chiller Plant Manager

Building Management System

provides building automation and

energy management functions

through stand- alone control. The

Chiller Plant Manager is capable of

monitoring and controlling your entire

chiller plant system.

Application software available:

•Time-of-day scheduling

•Duty cycle

•Demand limiting

•Chiller sequencing

•Process control language

•Boolean processing

•Zone control

•Reports and logs

•Custom messages

•Run time and maintenance

•Trend log

•Totalizing

•PID control loops

And of course, Trane’s Chiller Plant

Manager Panel can be used on a

stand- alone basis or tied into a

complete building automation

system.

Features and

Benefits

RLC-PRC016-EN

Model Number

Description

Model Nomenclature Digit Number

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

70-125 Tons

Digits 1,2 — Unit Model

RT = Rotary Chiller

Digit 3 — Unit Type

A = Air Cooled

Digit 4 — Development Sequence

A = First Sequence

Digit 5, 6 & 7 — Nominal Capacity

070 = 70 tons

080 = 80 tons

090 = 90 tons

100 = 100 tons

110 = 110 tons

125 = 125 tons

Digit 8 — Unit Voltage

A = 200/60/3

C = 230/60/3

D = 380/60/3

4 = 460/60/3

5 = 575/60/3

S = Special

Digit 9 — Compressor Starter Type

Y = Y-Delta Closed Transition

X = X-Line (Across the Line)

S = Special

Digit 10, 11 — Design Sequence

** = Factory Input

Digit 12 — Evaporator Leaving Temperature

1 = Standard 40 to 65°F

2 = Low 0 to 39°F

3 = Ice-Making 20 to 65°F

S = Special

Digit 13 — Condenser Coil Fin Material

A = Aluminum

S = Special

2 = Copper Fins

4 = CompleteCoat

Digit 14 — Agency Listing

0 = No Agency Listing

3 = C/UL Listing

Digit 15 — Control Interface

C = Deluxe without Communication

D = Deluxe with Communication

Digit 16 — Chilled Water Reset

0 = No Chilled Water Reset

1 = Based on Return Water Temperature

2 = Based on Outside Air Temperature

Digit 17 —Miscellaneous Factory Installed

Options

A = Architectural Louvered Panels

B = Control Power Transformer

C = Convenience Outlet

D = Low Ambient Lockout Sensor

F = Mech. Disconnect Switch

G = Low Ambient Operation

K = Coil Protection

M = Access Guard

P = Circuit Breaker (Single Point Power)

Z = Circuit Breaker (Dual Point Power)

Field Installed Options

Q = Spring Isolators

N = Neoprene Isolators

R = Remote Display Panel

3 = 5 Year Compressor Warranty

8 = Architectural Louvered Panels

9 = Coil Protection

0 = Access Guard

J = Remote Evaporator

H = Sound Attenuator

RLC-PRC016-EN14

General Data

Table G-1 — General Data RTAA — 70-125 Ton

Size 70 80 90 100 110 125

Compressor

Quantity 2 2 2 2 2 2

Nominal Size (1) (Tons) 35/35 40/40 50/40 50/50 60/50 60/60

Evaporator

Water Storage (Gallons) 39.8 37.3 34.4 32.1 53.4 45.8

(Liters) 150.6 143.1 130.2 121.5 202.11 173.4

Min. Flow (GPM) 84 96 108 120 132 150

(L/Sec) 5.3 6.1 6.8 7.6 8.3 9.5

Max. Flow (GPM) 252 288 324 360 396 450

(L/Sec) 15.9 18.2 20.4 22.7 25.0 28.4

Condenser

Qty of Coils 4 4 4 4 4 4

Coil Length (In) 156/156 156/156 168/156 168/168 204/168 204/204

Coil Height (In) 42 42 42 42 42 42

Fins/Ft. 192 192 192 192 192 192

Number of Rows 2 2 2 2 2 2

Condenser Fans

Quantity (1) 4/4 4/4 5/4 5/5 5/5 5/5

Diameter (In) 30 30 30 30 30 30

Total Airflow (CFM) 71750 71750 77640 83530 87505 91480

Nominal RPM 850 850 850 850 850 850

Tip Speed (Ft/Min) 6675 6675 6675 6675 6675 6675

Motor HP (Ea) 1.0 1.0 1.0 1.0 1.0 1.0

Min Starting/Oper Ambient (2)

Std Unit (Deg F) 25 25 25 25 25 25

Low Ambient (Deg F) -10 -10 -10 -10 -10 -10

General Unit

Refrigerant HCFC-22 HCFC-22 HCFC-22 HCFC-22 HCFC-22 HCFC-22

No. of Independent

Refrigerant Circuits 2 2 2 2 2 2

% Min. Load (3) 15 15 15 15 15 15

Refrigerant Charge (1) (Lb) 58/58 61/61 73/61 73/73 98/73 98/98

(Kg) 26/26 28/28 34/28 34/34 44/34 44/44

Oil Charge (1) (Gallons) 2.5/2.5 2.5/2.5 3/2.5 3/3 3/3 3/3

(Liters) 10.6/10.6 10.6/10.6 12.7/10.6 12.7/12.7 12.7/12.7 12.7/12.7

1. Data containing information on two circuits shown as follows: ckt 1/ckt2.

2. Minimum start-up/operating ambient based on a 5 mph wind across the condenser.

3. Percent minimum load is for total machine at 50°F ambient and 44°F LWT, not each individual circuit.

RLC-PRC016-EN

Selection

Procedure

The chiller capacity tables, P-1 through

P-12, cover the most frequently

encountered leaving water

temperatures. The tables reflect a 10°F

(6°C) temperature drop through the

evaporator. For temperature drops other

than 10°F (6°C), refer to Table F-1, and

apply the appropriate Performance Data

Adjustment Factors. For chilled brine

selections, refer to Figures F-2 and 3 for

Ethylene and Propylene Glycol

Adjustment Factors.

To select a Trane air-cooled Series R™

chiller, the following information is

required:

1. Design load in tons of refrigeration

2. Design chilled water temperature drop

3. Design leaving chilled water

temperature

4. Design ambient temperature

Evaporator flow rates can be determined

by using the following formulas:

GPM = Tons x 24

Temperature Drop (Degrees F)

OR L/S = kW (Capacity) x .239

Temperature Drop (Degrees C)

NOTE: Flow rates must fall within the

limits specified in Table G-1 (for GPM or

for l/s).

Selection Example

Given:

Required System Load = 115 Tons

Leaving Chilled Water Temperature

(LCWT) = 44°F Chilled Water

Temperature Drop = 10°F Design

Ambient Temperature = 95°F

Evaporator Fouling Factor = 0.0001

1. To calculate the required chilled water

flow rate we use the formula given

below:

GPM = 115 Tons x 24 = 276 GPM

10°F

2. From Table P-6 (RTAA Performance

Data), an RTAA 125 at the given

conditions will produce 120.1 tons

with a compressor power input of

136.3 kW and a unit EER of 9.8.

3. To determine the evaporator pressure

drop we use the flow rate (GPM) and

the evaporator water pressure drop

curves, Figure F-1. Entering the curve

at 276 GPM, the pressure drop for a

nominal 125 ton evaporator is 18 feet.

4. For selection of chilled brine units or

applications where the altitude is

significantly greater than sea level or

the temperature drop is different than

10°F, the performance adjustment

factors from Tables F-1, F-2, and/or F-3

should be applied at this point.

For example:

Corrected Capacity = Capacity

(unadjusted) x Glycol Flow Rate

Adjustment Factor

5. The final unit selection is:

•QTY (1) RTAA 125

•Cooling Capacity = 120.1 tons

•Entering/Leaving Chilled Water

Temperatures = 54/44°F

•Chilled Water Flow Rate = 276 GPM

•Evaporator Water Pressure Drop = 18

feet

•Compressor Power Input = 136.3 kW

•Unit EER = 9.8

Minimum Leaving Chilled Water

Temperature Setpoint

The minimum leaving chilled water

temperature setpoint for water is 40°F.

For those applications requiring lower

setpoints, a glycol solution must be used.

Contact the local Trane sales engineer for

additional information.

RLC-PRC016-EN16

Application

Considerations

Application Considerations

Certain application constraints should be

considered when sizing, selecting and

installing Trane air-cooled Series R™

chillers. Unit and system reliability is

often dependent upon properly and

completely complying with these

considerations. Where the application

varies from the guidelines presented, it

should be reviewed with your local

Trane sales engineer.

Unit Sizing

Unit capacities are listed in the

performance data section. Intentionally

oversizing a unit to assure adequate

capacity is not recommended. Erratic

system operation and excessive

compressor cycling are often a direct

result of an oversized chiller. In addition,

an oversized unit is usually more

expensive to purchase, install, and

operate. If oversizing is desired, consider

using two units.

Unit Placement

1. Setting The Unit

A base or foundation is not required if

the selected unit location is level and the

base is strong enough to support the

unit’s operating weight as listed in Tables

W-1 and W-2.

2. Isolation and Sound Emission

The most effective form of isolation is to

locate the unit away from any sound-

sensitive area. Structurally transmitted

sound can be reduced by

ELASTOMERIC vibration eliminators.

Spring isolators have proven to be of

little benefit on air-cooled Series R™

chiller installations and are not

recommended. An acoustical engineer

should always be consulted in critical

sound applications.

For maximum isolation effect, water

lines and electrical conduit should also

be isolated. Wall sleeves and rubber

isolated piping hangers can be used to

reduce the sound transmitted through

water piping. To reduce the sound

transmitted through electrical conduit,

use flexible electrical conduit.

State and local codes on sound

emissions should always be considered.

Since the environment in which a sound

source is located affects sound pressure,

unit placement must be carefully

evaluated. Sound power levels for Trane

air-cooled Series R™ chillers are available

on request.

3. Servicing

Adequate clearance for evaporator and

compressor servicing should be

provided. Recommended minimum

space envelopes for servicing are

located in the dimensional data section

and can serve as a guideline for

providing adequate clearance. The

minimum space envelopes also allow

for control panel swing and routine

maintenance requirements. Local code

requirements may take precedence.

4. Unit Location

a. General

Unobstructed flow of condenser air is

essential to maintain chiller capacity and

operating efficiency. When determining

unit placement, careful consideration

must be given to assuring a sufficient

flow of air across the condenser heat

transfer surface. Two detrimental

conditions are possible and must be

avoided if optimum performance is to be

achieved: warm air recirculation and coil

starvation.

Warm air recirculation occurs when

discharge air from the condenser fans is

recycled back to the condenser coil inlet.

Coil starvation occurs when free airflow

to (or from) the condenser is restricted.

Both warm air recirculation and coil

starvation cause reductions in unit

efficiency and capacity because of the

higher head pressures associated with

them. The air-cooled Series R™ chiller

offers an advantage over competitive

equipment in these situations.

Performance is minimally affected in

many restricted air flow situations due to

its unique condensing coil geometry.

Also, through its advanced Adaptive

Control™ microprocessor logic, the

chiller will attempt to stay on-line where

competitive chillers would usually shut

down.

Trane’s unique Adaptive Control

microprocessor has the ability to

understand the operating environment

of the chiller and adapt to it by first

optimizing its performance and second,

staying on line through abnormal

conditions. For example, high ambient

temperatures combined with a restricted

air flow situation will generally not cause

the air-cooled Series R™ chiller to shut

down. Competitive chillers would

typically shut down on a high pressure

nuisance cut-out in these conditions.

Debris, trash, supplies, etc. should not be

allowed to accumulate in the vicinity of

the air-cooled Series R™ chiller. Supply

air movement may draw debris into the

condenser coil, blocking spaces between

coil fins and causing coil starvation.

Special consideration should be given to

low ambient units. Condenser coils and

fan discharge must be kept free of

obstructions to permit adequate airflow

for satisfactory unit operation.

RLC-PRC016-EN

Application

Considerations

b. Provide Vertical Clearance

Vertical condenser air discharge must be

unobstructed. While it is difficult to

predict the degree of warm air

circulation, a unit installed as shown on

the left would have its capacity and

efficiency significantly reduced.

Performance data is based on free air

discharge.

c. Provide Lateral Clearance

The condenser coil inlet must not be

obstructed. A unit installed closer than

the minimum recommended distance to

a wall or other vertical riser may

experience a combination coil starvation

and warm air recirculation, resulting in

unit capacity and efficiency reductions.

Once again, the Adaptive Control™

microprocessor will allow the chiller to

stay on line, producing the maximum

available capacity, even at less than

recommended lateral clearances.

The recommended lateral clearances are

depicted in the dimensional data section.

These are estimates and should be

reviewed with the local Trane sales

engineer at the jobsite.

d. Provide Sufficient Unit-to-Unit

Clearance

Units should be separated from each

other by a sufficient distance to prevent

warm air recirculation or coil starvation.

The air-cooled Series R™ chiller has the

lowest recommended unit-to-unit

clearance in the industry, eight feet.

Consult the local Trane sales engineer for

applications concerning close spacing

and restricted airflows.

e. Walled Enclosure Installations

When the unit is placed in an enclosure

or small depression, the top of the fans

should be no lower than the top of the

enclosure or depression. If they are,

consideration should be given to ducting

the top of the unit. Ducting individual

fans, however, is not recommended.

Such applications should always be

reviewed with the local Trane sales

engineer.

RLC-PRC016-EN18

Application

Considerations

Water Treatment

Dirt, scale, products of corrosion and

other foreign material will adversely

affect heat transfer between the water

and system components. Foreign matter

in the chilled water system can also

increase pressure drop and,

consequently, reduce waterflow. Proper

water treatment must be determined

locally, depending on the type of system

and local water characteristics.

Neither salt nor brackish water is

recommended for use in Trane air-

cooled Series R™ chillers. Use of either

will lead to a shortened life to an

indeterminable degree. The Trane

Company encourages the employment

of a reputable water treatment specialist,

familiar with local water conditions, to

assist in this determination and in the

establishment of a proper water

treatment program.

The capacities given in the performance

data section of this catalog are based on

water with a fouling factor of .00010. For

capacities at other fouling factors, see

adjustment factors in Table F-1.

Effect Of Altitude On Capacity

Air-cooled Series R™ chiller capacities

given in the performance data tables, P-1

through P-12, are for use at sea level. At

elevations substantially above sea level,

the decreased air density will decrease

condenser capacity and, therefore, unit

capacity and efficiency. The adjustment

factors in Table F-1 can be applied

directly to the catalog performance data

to determine the unit’s adjusted

performance.

Ambient Limitations

Trane air-cooled Series R™ chillers are

designed for year-round applications

over a range of ambients. Chillers from

70-125 tons offer operation for ambients

from 25 to 115°F as standard, and will

operate down to -10°F with the low

ambient option.

The minimum ambient temperatures are

based on still conditions (winds not

exceeding five mph). Greater wind

velocities will result in a drop in head

pressure, therefore increasing the

minimum starting and operating

ambient temperature. Once again, the

Adaptive Control™ microprocessor will

attempt to keep the chiller on-line when

high or low ambient conditions exist,

making every effort to avoid nuisance

trip-outs and provide the maximum

allowable tonnage.

Waterflow Limits

The minimum waterflow rates are given

in Table G-1. Evaporator flow rates

below the tabulated values will result in

laminar flow causing freeze-up

problems, scaling, stratification and poor

control.

The maximum evaporator waterflow

rate is also given in the general data

section. Flow rates exceeding those

listed may result in excessive tube and

baffle erosion.

The evaporator can withstand up to 50

percent water flow reduction as long as

this flow is equal or above the minimum

gpm requirements.

Variable Evaporator Flow

Air-cooled Series R™ chillers have the

capability to handle variable evaporator

flow without losing leaving water

temperature control. Flow rates can be

varied up to 10% of design without

decreasing the leaving water

temperature control capabilities.

Temperature Limits

1. Leaving Water Temperature Range

Trane air-cooled Series R™ chillers have

three distinct leaving water categories:

standard, low temperature, and ice

making.

The standard leaving water temperature

range is 40 to 65°F. Low temperature

machines produce leaving water

temperatures between 0°F and 39°F.

Since water supply temperature

setpoints from 0 to 39°F result in suction

temperatures at or below the freezing

point of water, a glycol solution is

required for all low temperature

machines. Ice making machines have a

leaving water temperature range of 20 to

65°F. Ice making controls include dual

setpoint controls and safeties for ice

making and standard cooling

capabilities. Consult your local Trane

sales engineer for applications or

selections involving low temperature or

ice making machines.

The maximum water temperature that

can be circulated through an evaporator

when the unit is not operating is 108°F.

The evaporator becomes thermal stress

limited at this temperature.

2. Supply Water Temperature Drop

The performance data for the Trane air-

cooled Series R™ chiller is based on a

chilled water temperature drop of 10°F.

Temperature drops outside this range

will result in unit performance that

differs from that cataloged. For

performance data outside the 10°F

range, see Table F-1 for adjustment

factors. Chilled water temperature drops

from 6 to 18°F may be used as long as

minimum and maximum water

temperature and minimum and

maximum flow rates are not violated.

Temperature drops outside 6 to 18°F are

beyond the optimum range for control

and may adversely affect the

microcomputer’s ability to maintain an

acceptable supply water temperature

range.

Further, temperature drops of less than

6°F may result in inadequate refrigerant

superheat. Sufficient superheat is always

a primary concern in any direct

expansion refrigerant system and is

especially important in a package chiller

where the evaporator is closely coupled

to the compressor. When temperature

drops are less than 6°F, an evaporator

runaround loop may be required.

RLC-PRC016-EN

Application

Considerations

Typical Water Piping

All building water piping must be

flushed prior to making final connections

to the chiller. To reduce heat loss and

prevent condensation, insulation should

be installed. Expansion tanks are also

usually required so that chilled water

volume changes can be accommodated.

A typical piping arrangement is shown in

Figure A-1.

Short Water Loops

The proper location of the temperature

control sensor is in the supply (outlet)

water. This location allows the building

to act as a buffer and assures a slowly

changing return water temperature. If

there is not a sufficient volume of water

in the system to provide an adequate

buffer, temperature control can be lost,

resulting in erratic system operation and

excessive compressor cycling. A short

water loop has the same effect as

attempting to control from the building

return water.

The Air-Cooled Series R™ 70-125 ton

chiller has excellent leaving chilled water

control capabilities because of

exceptional controls, EXV and linear

unloading. However, it is still a good idea

to make sure the evaporator water loop

is sized sufficiently to help maintain

temperature control.

As a guideline, ensure the volume of

water in the evaporator loop equals or

exceeds two times the evaporator flow

rate. For a rapidly changing load profile,

the amount of volume should be

increased.

To prevent the effect of a short water

loop, the following items should be

given careful consideration:

A storage tank or larger header pipe to

increase the volume of water in the

system and, therefore, reduce the rate of

change of the return water temperature.

Multiple Unit Operation

Whenever two or more units are used

on one chilled water loop, Trane

recommends that their operation be

controlled from a single control device,

such as a Trane Tracer™ system.

1. Series Operation

Some systems require large chilled

water temperature drops (16 to 24°F).

For those installations, two units with

their evaporators in series are usually

required. Control of the units should be

from a common temperature controller

to prevent the separate thermostats

fighting one another and continually

hunting. It is possible to control from the

two individual unit controls, but a

common temperature controller

provides a positive method for

preventing control overlap, more closely

matches system load, and simplifies

compressor lead-lag capability.

2. Parallel Operation

Some systems require more capacity or

standby capability than a single machine

can provide. For those installations, two

units with their evaporators in a parallel

configuration are typical. The only

effective way of controlling two units in

parallel is with a single temperature

controller. Two individual temperature

controllers are not capable of providing

reliable system control and will often

result in unsatisfactory operation.

Figure A-1 — Recommended Piping Components For Typical Evaporator Installation

Vents Valved

Pressure

Gauge

Drain Union

Vibration

Eliminator

Flow

Switch

(Optional) Balancing Valve

Gate Valve

Union Water

Strainer

Vibration

Eliminator

Gate Valve

RLC-PRC016-EN20

Performance

Adjustment

Factors

Figure F-1 — Evaporator Water Pressure Drops, 70-125 Ton Units

Table F-1 — Performance Data Adjustment Factors

Chilled Altitude

Fouling Water Sea Level 2000 Feet 4000 Feet 6000 Feet

Factor Temp. Drop CAP GPM KW CAP GPM KW CAP GPM KW CAP GPM KW

8 1.000 1.249 1.000 0.996 1.245 1.004 0.991 1.240 1.007 0.987 1.234 1.014

0.00010 10 1.000 1.000 1.000 0.997 0.996 1.004 0.993 0.992 1.007 0.988 0.988 1.015

12 1.001 0.835 1.001 0.997 0.832 1.004 0.993 0.828 1.009 0.988 0.824 1.015

14 1.003 0.716 1.001 0.999 0.714 1.004 0.994 0.711 1.009 0.990 0.708 1.015

16 1.004 0.628 1.001 1.000 0.626 1.005 0.997 0.623 1.009 0.991 0.620 1.016

8 0.988 1.235 0.996 0.984 1.230 1.000 0.980 1.225 1.004 0.975 1.220 1.010

0.00025 10 0.988 0.989 0.998 0.986 0.985 1.000 0.981 0.981 1.004 0.977 0.976 1.011

12 0.990 0.825 0.998 0.987 0.822 1.000 0.983 0.819 1.005 0.978 0.815 1.011

14 0.991 0.708 0.998 0.988 0.706 1.001 0.984 0.703 1.005 0.980 0.700 1.011

16 0.993 0.621 0.999 0.990 0.619 1.001 0.986 0.617 1.006 0.981 0.614 1.012

FLOW (L/s)

RLC-PRC016-EN

Performance

Adjustment

Factors

Figure F-2 — Ethylene Glycol Performance Factors Figure F-3 — Propylene Glycol Performance Factors

Figure F-4 — Ethylene Glycol and Propylene Glycol Freeze Point

RLC-PRC016-EN22

Table P-2 — 60 Hz RTAA 80 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 83.0 68.9 12.8 78.8 75.6 11.2 74.4 83.1 9.7 69.8 91.3 8.4 65.0 100.4 7.2

42 86.0 70.1 13.0 81.6 76.8 11.4 77.1 84.2 9.9 72.3 92.5 8.6 67.4 101.6 7.3

44 89.0 71.3 13.3 84.5 78.0 11.7 79.8 85.4 10.2 74.9 93.7 8.8 69.9 102.8 7.5

46 92.0 72.5 13.5 87.4 79.2 11.9 82.6 86.6 10.4 77.6 94.9 9.0 72.4 104.1 7.7

48 95.2 73.8 13.8 90.4 80.4 12.1 85.4 87.9 10.6 80.3 96.2 9.2 74.4 104.7 7.9

50 98.3 75.1 14.0 93.4 81.7 12.4 88.3 89.1 10.8 83.0 97.4 9.4 75.9 104.8 8.0

55 106.5 78.3 14.6 101.3 84.9 13.0 95.8 92.4 11.4 90.1 100.7 9.9 80.0 105.0 8.5

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Table P-1 — 60 Hz RTAA 70 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 72.6 58.6 12.9 68.7 64.3 11.2 64.6 70.8 9.7 60.4 77.9 8.4 55.5 84.8 7.1

42 75.0 59.4 13.1 71.1 65.1 11.5 66.9 71.6 10.0 62.6 78.7 8.6 57.1 84.8 7.3

44 77.6 60.2 13.4 73.5 65.9 11.8 69.3 72.4 10.2 64.9 79.6 8.8 58.6 84.8 7.5

46 80.2 61.1 13.7 76.0 66.8 12.0 71.7 73.2 10.5 67.2 80.5 9.0 60.2 84.8 7.7

48 82.8 61.9 14.0 78.5 67.6 12.3 74.1 74.1 10.7 69.5 81.4 9.3 61.8 84.8 7.9

50 85.4 62.8 14.3 81.1 68.5 12.6 76.5 75.0 11.0 71.8 82.3 9.5 63.4 84.8 8.1

55 92.2 64.9 14.9 87.6 70.6 13.2 82.8 77.2 11.6 77.8 84.7 10.0 67.3 84.6 8.7

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Performance Data

Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 251.7 66.1 3.4 238.7 71.9 3.0 225.0 78.3 2.6 209.6 84.8 2.2

8 267.6 67.6 3.5 253.5 73.4 3.1 239.4 79.9 2.7 219.8 84.9 2.4

10 283.4 69.1 3.6 269.0 75.0 3.2 254.2 81.5 2.8 229.6 84.8 2.5

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0000176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 289.4 77.9 3.3 275.0 84.7 2.9 259.8 92.1 2.6 244.0 100.2 2.2

8 307.7 80.1 3.5 292.5 86.9 3.1 276.4 94.3 2.7 259.8 102.4 2.3

10 326.6 82.4 3.6 310.5 89.1 3.2 293.9 96.6 2.8 276.4 104.7 2.4

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0000176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

RLC-PRC016-EN

Table P-3 — 60 Hz RTAA 90 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 94.7 81.9 12.3 89.9 88.9 10.9 84.8 97.0 9.5 79.5 106.2 8.2 73.9 116.4 7.0

42 97.9 83.3 12.6 93.0 90.3 11.1 87.8 98.4 9.7 82.3 107.5 8.4 76.5 117.8 7.2

44 101.2 84.7 12.8 96.2 91.7 11.3 90.8 99.8 9.9 85.1 108.9 8.6 79.2 119.2 7.4

46 104.6 86.2 13.0 99.4 93.2 11.6 93.8 101.2 10.1 88.0 110.4 8.8 81.7 120.4 7.5

48 108.1 87.7 13.3 102.6 94.6 11.8 96.9 102.7 10.3 91.0 111.8 9.0 82.9 120.1 7.7

50 111.5 89.2 13.5 106.0 96.2 12.0 100.1 104.2 10.5 93.9 113.3 9.2 84.3 120.0 7.8

55 120.5 93.2 14.0 114.5 100.1 12.5 108.2 108.1 11.0 101.6 117.2 9.6 88.4 119.6 8.2

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Table P-4 — 60 Hz RTAA 100 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 105.1 94.3 12.0 99.9 101.7 10.6 94.2 110.5 9.3 88.2 120.5 8.1 81.9 131.9 6.9

42 108.6 95.9 12.2 103.2 103.3 10.8 97.4 112.0 9.5 91.2 122.1 8.2 84.7 133.5 7.1

44 112.2 97.5 12.4 106.6 104.9 11.0 100.6 113.6 9.7 94.3 123.7 8.4 87.6 135.1 7.2

46 115.9 99.2 12.6 110.1 106.6 11.2 103.9 115.3 9.9 97.4 125.3 8.6 90.6 136.7 7.4

48 119.6 101.0 12.8 113.6 108.3 11.4 107.3 117.0 10.1 100.6 127.0 8.8 92.0 136.7 7.5

50 123.4 102.8 13.0 117.2 110.1 11.6 110.7 118.7 10.3 103.8 128.7 8.9 93.4 136.6 7.6

55 133.1 107.5 13.5 126.5 114.7 12.1 119.4 123.2 10.7 112.0 133.1 9.3 98.1 136.6 8.0

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Performance Data

Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 329.4 91.6 3.2 312.9 98.9 2.9 295.3 107.1 2.5 277.1 116.2 2.2

8 349.8 94.2 3.4 332.3 101.5 3.0 313.6 109.7 2.6 294.3 118.8 2.3

10 370.6 96.9 3.5 352.0 104.2 3.1 332.6 112.4 2.7 307.7 120.0 2.4

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0000176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 365.7 104.8 3.2 347.0 112.7 2.8 327.3 121.6 2.5 306.6 131.7 2.2

8 387.5 107.7 3.3 367.8 115.6 2.9 347.0 124.6 2.6 325.6 134.7 2.2

10 410.0 110.9 3.4 389.2 118.7 3.0 367.4 127.7 2.7 341.1 136.5 2.3

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0000176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

RLC-PRC016-EN24

Table P-6 — 60 Hz RTAA 125 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 125.7 113.2 12.1 119.3 122.0 10.8 112.4 132.3 9.4 105.2 144.1 8.2 97.6 157.5 7.0

42 129.9 115.2 12.3 123.3 124.0 11.0 116.2 134.3 9.6 108.8 146.1 8.3 100.9 159.5 7.1

44 134.1 117.2 12.5 127.3 126.0 11.2 120.1 136.3 9.8 112.4 148.1 8.5 104.3 161.5 7.3

46 138.5 119.4 12.7 131.4 128.1 11.3 124.0 138.3 10.0 116.1 150.1 8.7 106.7 162.2 7.4

48 142.9 121.5 12.9 135.6 130.2 11.5 127.9 140.4 10.2 119.8 152.2 8.8 107.2 160.2 7.5

50 147.4 123.7 13.1 139.9 132.4 11.7 132.0 142.6 10.3 123.6 154.4 9.0 107.6 158.0 7.7

55 159.0 129.5 13.6 150.9 138.0 12.2 142.3 148.1 10.7 133.2 159.8 9.4 109.5 152.1 8.1

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Table P-5 — 60 Hz RTAA 110 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 113.3 102.5 11.9 107.7 110.7 10.6 101.7 120.3 9.3 95.2 131.2 8.1 88.4 143.6 6.9

42 117.1 104.3 12.2 111.3 112.4 10.8 105.1 122.0 9.5 98.4 132.9 8.2 91.5 145.3 7.0

44 120.9 106.1 12.4 114.9 114.2 11.0 108.5 123.7 9.7 101.7 134.7 8.4 94.6 147.1 7.2

46 124.8 107.9 12.6 118.6 116.0 11.2 112.0 125.5 9.9 105.1 136.4 8.6 97.7 148.9 7.4

48 128.8 109.8 12.8 122.4 117.8 11.4 115.6 127.3 10.0 108.5 138.3 8.7 99.4 148.9 7.5

50 132.8 111.7 13.0 126.2 119.7 11.6 119.3 129.2 10.2 111.9 140.1 8.9 101.0 148.7 7.6

55 143.1 116.7 13.4 136.1 124.7 12.0 128.6 134.1 10.7 120.6 144.9 9.3 103.6 145.4 8.0

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 394.1 114.0 3.2 374.1 122.6 2.8 353.0 132.4 2.5 331.2 143.4 2.2

8 417.3 117.2 3.3 396.6 125.8 2.9 374.5 135.6 2.6 351.2 146.7 2.2

10 441.6 120.6 3.4 419.5 129.2 3.0 395.9 139.0 2.7 369.5 149.2 2.3

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0000176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 436.7 125.7 3.2 414.2 135.1 2.8 390.3 145.6 2.5 365.3 157.5 2.2

8 462.7 129.4 3.3 438.8 138.7 2.9 413.5 149.3 2.6 387.5 161.2 2.3

10 489.1 133.3 3.4 464.1 142.6 3.0 437.7 153.1 2.7 410.0 165.0 2.3

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0000176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Performance Data

RLC-PRC016-EN

Performance Data

Table P-7 — 50 Hz RTAA 70 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 62.9 48.7 14.0 59.5 53.4 12.2 56.0 58.7 10.5 52.3 64.7 9.0 48.6 71.2 7.6

42 65.1 49.4 14.3 61.6 54.1 12.4 58.0 59.4 10.8 54.3 65.4 9.2 50.4 71.9 7.9

44 67.3 50.1 14.6 63.7 54.8 12.7 60.1 60.1 11.0 56.2 66.1 9.5 52.3 72.7 8.1

46 69.5 50.8 14.9 65.9 55.5 13.0 62.1 60.8 11.3 58.2 66.8 9.7 54.2 73.5 8.3

48 71.8 51.5 15.2 68.1 56.2 13.3 64.2 61.5 11.5 60.3 67.6 9.9 56.1 74.3 8.5

50 74.2 52.2 15.5 70.4 56.9 13.6 66.4 62.3 11.8 62.3 68.4 10.2 58.1 75.2 8.7

55 80.1 54.0 16.2 76.1 58.7 14.3 71.9 64.1 12.4 67.5 70.4 10.7 63.0 77.5 9.2

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98. Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 218.3 54.9 3.6 206.7 59.7 3.2 194.8 65.0 2.8 182.8 70.9 2.4

8 232.1 56.1 3.8 220.1 61.0 3.3 207.4 66.3 2.9 194.8 72.3 2.5

10 246.1 57.4 3.9 233.5 62.3 3.5 220.5 67.7 3.0 207.1 73.8 2.6

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Table P-8 — 50 Hz RTAA 80 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 72.1 57.4 13.8 68.4 62.9 12.0 64.6 69.0 10.4 60.5 75.9 9.0 56.4 83.4 7.7

42 74.7 58.4 14.1 70.9 63.9 12.3 66.9 70.0 10.7 62.8 76.9 9.2 58.5 84.4 7.8

44 77.4 59.4 14.3 73.4 64.9 12.6 69.3 71.0 10.9 65.1 77.9 9.4 60.7 85.4 8.0

46 80.1 60.4 14.6 76.0 65.9 12.8 71.8 72.1 11.2 67.4 78.9 9.6 62.8 86.5 8.2

48 82.8 61.5 14.9 78.7 66.9 13.1 74.3 73.1 11.4 69.8 80.0 9.8 65.1 87.5 8.4

50 85.7 62.6 15.1 81.4 68.0 13.3 76.9 74.2 11.6 72.2 81.0 10.1 67.4 88.6 8.6

55 92.9 65.3 15.8 88.3 70.8 13.9 83.4 77.0 12.2 78.4 83.8 10.6 73.2 91.5 9.1

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 251.4 64.8 3.6 238.7 70.4 3.2 225.4 76.5 2.8 206.4 81.6 2.4

8 267.6 66.7 3.7 254.2 72.3 3.3 240.1 78.4 2.9 225.0 84.9 2.5

10 284.4 68.6 3.9 270.4 74.2 3.4 255.6 80.3 3.0 240.1 87.1 2.6

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

RLC-PRC016-EN26

Performance Data

Table P-9 — 50 Hz RTAA 90 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 82.1 68.1 13.3 78.0 73.9 11.7 73.5 80.6 10.2 68.9 88.1 8.8 64.0 96.6 7.5

42 85.0 69.3 13.5 80.7 75.1 12.0 76.1 81.7 10.4 71.3 89.3 9.0 66.3 97.7 7.7

44 87.9 70.5 13.8 83.5 76.3 12.2 78.8 82.9 10.7 73.8 90.5 9.2 68.7 98.9 7.9

46 90.9 71.8 14.0 86.3 77.5 12.4 81.5 84.1 10.9 76.4 91.7 9.4 71.1 100.2 8.1

48 93.9 73.1 14.3 89.2 78.8 12.6 84.2 85.4 11.1 79.0 92.9 9.6 73.5 101.4 8.2

50 97.0 74.4 14.5 92.1 80.1 12.9 87.0 86.7 11.3 81.6 94.2 9.8 76.0 102.7 8.4

55 105.0 77.8 15.0 99.7 83.4 13.4 94.2 90.0 11.8 88.3 97.5 10.3 79.9 103.0 8.8

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98. Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 286.2 76.2 3.5 271.4 82.2 3.1 256.0 89.0 2.7 240.1 96.5 2.4

8 303.8 78.4 3.6 288.3 84.4 3.2 272.1 91.1 2.8 255.6 98.6 2.5

10 322.1 80.7 3.7 305.9 86.7 3.3 289.0 93.4 2.9 271.1 100.9 2.5

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Table P-10 — 50 Hz RTAA 100 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 91.1 78.4 12.9 86.6 84.6 11.4 81.7 91.7 10.0 76.5 100.0 8.6 71.0 109.4 7.4

42 94.2 79.8 13.1 89.5 85.9 11.6 84.5 93.1 10.2 79.1 101.3 8.8 73.5 110.7 7.5

44 97.4 81.2 13.3 92.5 87.3 11.8 87.3 94.4 10.4 81.8 102.7 9.0 76.0 112.1 7.7

46 100.6 82.7 13.5 95.6 88.7 12.0 90.2 95.8 10.6 84.5 104.1 9.2 78.6 113.5 7.9

48 103.9 84.2 13.7 98.7 90.2 12.3 93.2 97.3 10.8 87.3 105.5 9.4 81.2 114.9 8.0

50 107.3 85.7 13.9 101.9 91.7 12.5 96.2 98.7 11.0 90.1 106.9 9.6 83.8 116.3 8.2

55 115.9 89.7 14.4 110.1 95.6 12.9 103.9 102.6 11.4 97.4 110.7 10.0 88.6 117.6 8.6

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98. Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 317.1 87.1 3.4 301.0 100.0 3.0 283.7 101.0 2.6 265.8 109.3 2.3

8 336.5 89.7 3.5 319.3 102.5 3.1 301.3 103.5 2.7 282.3 111.8 2.4

10 356.2 92.3 3.6 338.2 105.1 3.2 319.3 106.1 2.8 299.2 114.4 2.5

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

RLC-PRC016-EN

Table P-12 — 50 Hz RTAA 125 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 108.8 93.9 13.0 103.2 101.2 11.5 97.3 109.7 10.1 91.0 119.4 8.7 84.4 130.5 7.4

42 112.5 95.6 13.2 106.7 102.8 11.7 100.6 111.3 10.3 94.1 121.1 8.9 87.3 132.2 7.6

44 116.2 97.3 13.4 110.3 104.5 11.9 104.0 113.0 10.5 97.3 122.7 9.1 90.3 133.8 7.7

46 120.0 99.1 13.6 113.9 106.2 12.1 107.4 114.7 10.6 100.5 124.5 9.2 93.4 135.6 7.9

48 123.9 100.9 13.8 117.6 108.0 12.3 110.9 116.5 10.8 103.8 126.2 9.4 95.8 136.5 8.1

50 127.9 102.8 14.0 121.4 109.9 12.5 114.4 118.3 11.0 107.1 128.0 9.6 96.5 135.1 8.2

55 138.1 107.7 14.5 131.0 114.7 13.0 123.5 123.0 11.5 115.6 132.6 10.0 97.7 129.8 8.6

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Performance Data

Table P-11 — 50 Hz RTAA 110 Performance Data English

Entering Condenser Air Temperature (Degrees F)

LWT 75 85 95 105 115

(Deg. F) Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER

40 98.4 85.3 12.8 93.5 92.0 11.4 88.2 99.9 10.0 82.6 108.9 8.6 76.7 119.1 7.3

42 101.7 86.8 13.1 96.7 93.5 11.6 91.2 101.3 10.2 85.5 110.3 8.8 79.4 120.6 7.5

44 105.1 88.3 13.3 99.9 95.0 11.8 94.3 102.8 10.4 88.3 111.8 9.0 82.1 122.1 7.7

46 108.5 89.9 13.5 103.1 96.5 12.0 97.4 104.3 10.6 91.3 113.3 9.2 84.9 123.6 7.8

48 112.1 91.5 13.7 106.5 98.1 12.2 100.5 105.9 10.7 94.3 114.9 9.3 87.7 125.2 8.0

50 115.6 93.2 13.9 109.9 99.7 12.4 103.8 107.5 10.9 97.3 116.5 9.5 90.5 126.7 8.2

55 124.8 97.5 14.4 118.6 103.9 12.9 112.0 111.6 11.4 105.0 120.5 9.9 92.3 123.5 8.5

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.00010.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kW input is for compressors only.

4. EER = Energy Efficiency Ratio (Btu/watt-hour). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 10°F.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98. Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 342.5 94.8 3.4 324.9 101.9 3.0 306.6 110.0 2.6 287.3 119.0 2.3

8 362.9 97.5 3.5 344.6 104.6 3.1 325.2 112.7 2.7 304.8 121.8 2.4

10 384.3 100.4 3.6 365.0 107.5 3.2 344.6 115.5 2.8 323.1 124.6 2.5

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

Metric

Entering Condenser Air Temperature (Degrees C)

LWT 30 35 40 45

(Deg. C) kWo kWi COP kWo kWi COP kWo kWi COP kWo kWi COP

6 378.3 104.3 3.4 358.6 112.0 3.0 337.9 120.7 2.7 316.1 130.5 2.3

8 400.8 107.4 3.5 380.1 115.0 3.1 358.3 123.8 2.8 335.4 133.6 2.4

10 424.4 110.7 3.6 402.6 118.3 3.2 379.4 127.0 2.9 355.5 136.7 2.5

Notes:

1. Ratings based on sea level altitude and evaporator fouling factor of 0.0176.

2. Consult Trane representative for performance at temperatures outside of the ranges shown.

3. kWi input is for compressors only.

4. COP = Coefficient of Performance (kWo/kWi). Power inputs include compressors, condenser fans and control power.

5. Ratings are based on an evaporator temperature drop of 5.6°C.

6. 115°F performance data reflects Adaptive Control Microprocessor control algorithms.

7. Interpolation between points is permissible. Extrapolation is not permitted.

8. Rated in accordance with ARI Standard 550/590-98.

RLC-PRC016-EN28

Performance Data

Table P-14 — ARI Part-Load Values (50 Hz)

Unit % Load Tons EER IPLV

RTAA 70 100 60.1 11.0 15.0

75 45.0 13.2

50 30.0 15.9

25 15.0 17.9

RTAA 80 100 69.3 10.9 14.5

75 52.0 12.8

50 34.7 16.3

25 17.3 13.8

RTAA 90 100 78.8 10.7 13.8

75 59.1 12.4

50 39.4 14.8

25 19.7 15.0

RTAA 100 100 87.3 10.4 13.7

75 65.5 12.0

50 43.7 14.6

25 21.8 16.0

RTAA 110 100 94.3 10.4 13.8

75 70.7 12.0

50 47.1 14.8

25 23.6 16.6

RTAA125 100 104.0 10.5 13.7

75 78.0 12.1

50 52.0 14.8

25 26.0 15.3

Table P-13 — ARI Part-Load Values (60 Hz)

Unit % Load Tons EER IPLV

RTAA 70 100 69.3 10.2 13.6

75 51.9 12.0

50 34.6 14.6

25 17.3 16.1

RTAA 80 100 79.8 10.2 13.2

75 59.8 11.7

50 39.8 14.9

25 19.9 12.6

RTAA 90 100 90.8 9.9 12.6

75 68.0 11.3

50 45.3 13.5

25 22.7 13.6

RTAA 100 100 100.6 9.7 12.6

75 75.5 11.0

50 50.3 13.5

25 25.2 14.8

RTAA 110 100 108.5 9.7 12.6

75 81.2 11.0

50 54.2 13.7

25 27.1 14.8

RTAA125 100 120.1 9.8 12.6

75 89.7 11.2

50 59.8 13.7

25 29.9 13.4

RLC-PRC016-EN

Electrical Data

Table E-1 — Electrical Data (50 & 60 Hz, 3 Phase)

Unit Wiring Motor Data

Fans

Unit Rated # of Power Max. Fuse, HACR Rec. Time Compressor (Each) (Each) Control

Size Voltage (9)

Connections (1)

MCA (3) Breaker or MOP (2,11) Delay or RDE (4) Qty RLA (5) LRA (8) Qty. kW FLA kW (7, 10)

RTAA 70 200/60 1 300 400 350 2 115 - 115 800 - 800 8 1.0 5.1 0.75

230/60 1 265 350 300 2 100 - 100 690 - 690 8 1.0 5.0 0.75

380/60 1 163 200 200 2 61 - 61 400 - 400 8 1.0 3.2 0.75

460/60 1 133 175 150 2 50 - 50 330 - 330 8 1.0 2.5 0.75

575/60 1 108 125 125 2 40 - 40 270 - 270 8 1.0 2.2 0.75

380/50 1 140 175 150 2 53 - 53 308 - 308 8 0.7 2.5 0.75

400/50 1 133 175 150 2 50 - 50 325 - 325 8 0.7 2.5 0.75

415/50 1 128 175 150 2 48 - 48 337 - 337 8 0.7 2.5 0.75

RTAA 80 200/60 1 361 500 400 2 142 - 142 800 - 800 8 1.0 5.1 0.75

230/60 1 319 400 350 2 124 - 124 760 - 760 8 1.0 5.0 0.75

380/60 1 194 250 225 2 75 - 75 465 - 465 8 1.0 3.2 0.75

460/60 1 160 200 175 2 62 - 62 380 - 380 8 1.0 2.5 0.75

575/60 1 131 175 150 2 50 - 50 304 - 304 8 1.0 2.2 0.75

380/50 1 167 200 175 2 65 - 65 356 - 356 8 0.7 2.5 0.75

400/50 1 160 200 175 2 62 - 62 375 - 375 8 0.7 2.5 0.75

415/50 1 155 200 175 2 60 - 60 389 - 389 8 0.7 2.5 0.75

RTAA 90 200/60 1 428 600 500 2 192 - 142 990 - 800 9 1.0 5.1 0.75

230/60 1 378 500 450 2 167 - 124 820 - 760 9 1.0 5.0 0.75

380/60 1 230 300 300 2 101 - 75 497 - 465 9 1.0 3.2 0.75

460/60 1 190 250 225 2 84 - 62 410 - 380 9 1.0 2.5 0.75

575/60 1 154 200 175 2 67 - 50 328 - 304 9 1.0 2.2 0.75

380/50 1 195 250 225 2 88 - 65 386 - 356 9 0.7 2.5 0.75

400/50 1 190 250 225 2 84 - 62 402 - 375 9 0.7 2.5 0.75

415/50 1 182 250 225 2 81 - 60 417 -389 9 0.7 2.5 0.75

RTAA 100 200/60 1 483 600 600 2 192 - 192 990 - 990 10 1.0 5.1 0.75

230/60 1 426 500 500 2 167 - 167 820 - 820 10 1.0 5.0 0.75

380/60 1 259 350 300 2 101 - 101 497 - 497 10 1.0 3.2 0.75

460/60 1 214 250 250 2 84 - 84 410 - 410 10 1.0 2.5 0.75

575/60 1 173 225 200 2 67 - 67 328 - 328 10 1.0 2.2 0.75

380/50 1 223 250 250 2 88 - 88 382 - 382 10 0.7 2.5 0.75

400/50 1 214 250 250 2 84 - 84 402 - 402 10 0.7 2.5 0.75

415/50 1 208 250 250 2 81 - 81 417 - 417 10 0.7 2.5 0.75

RTAA 110 200/60 1 535 700 600 2 233 - 192 1190 - 990 10 1.0 5.1 0.75

230/60 1 471 600 600 2 203 - 167 1044 - 820 10 1.0 5.0 0.75

380/60 1 287 400 350 2 123 - 101 632 - 497 10 1.0 3.2 0.75

460/60 1 235 300 300 2 101 - 84 522 - 410 10 1.0 2.5 0.75

575/60 1 191 250 225 2 81 - 67 420 - 328 10 1.0 2.2 0.75

380/50 1 245 300 300 2 106 - 88 487 - 382 10 0.7 2.5 0.75

400/50 1 236 300 300 2 101 - 84 512 - 402 10 0.7 2.5 0.75

415/50 1 228 300 300 2 97 - 81 531 - 417 10 0.7 2.5 0.75

RTAA 125 200/60 1 576 800 700 2 233 - 233 1190 - 1190 10 1.0 5.1 0.75

230/60 1 507 700 600 2 203 - 203 1044 - 1044 10 1.0 5.0 0.75

380/60 1 309 400 350 2 123 - 123 632 - 632 10 1.0 3.2 0.75

460/60 1 253 350 300 2 101 - 101 522 - 522 10 1.0 2.5 0.75

575/60 1 205 250 225 2 81 - 81 420 - 420 10 1.0 2.2 0.75

380/50 1 264 350 300 2 106 - 106 487 - 487 10 0.7 2.5 0.75

400/50 1 253 350 300 2 101 - 101 512 - 512 10 0.7 2.5 0.75

415/50 1 244 350 300 2 97 - 97 531 - 531 10 0.7 2.5 0.75

Notes:

1. As standard, all 70-215 ton units require a single point power connection.

2. Max Fuse or HACR type breaker = 225 percent of the largest compressor RLA plus 100 percent of the second compressor RLA, plus the sum of the condenser fan

FLA per NEC 440-22. Use FLA per circuit, NOT FLA for the entire unit).

3. MCA - Minimum Circuit Ampacity - 125 percent of largest compressor RLA plus 100 percent of the second compressor RLA plus the sum of the condenser fans

FLAs per NEC 440-33.

4. RECOMMENDED TIME DELAY OR DUAL ELEMENT (RDE) FUSE SIZE: 150 percent of the largest compressor RLA plus 100 percent of the second compressor RLA

and the sum of the condenser fan FLAs.

5. RLA - Rated Load Amps - rated in accordance with UL Standard 1995.

6. Local codes may take precedence.

7. Control kW includes operational controls only. Does not include evaporator heat tape.

8. LRA - Locked Rotor Amps - based on full winding (x-line) start units. LRA for wye-delta starters is 1/3 of LRA of x-line units.

9. VOLTAGE UTILIZATION RANGE:

Rated Voltage Utilization Range

200 180-220

230 208-254

380 342-418

460 414-506

575 516-633

10. A 115/60/1, 15 amp customer provided power connection is required to operate the unit controls. A

separate 115/60/1, 15 amp customer provided power connection is also needed to power the evaporator

heat tape (420 watts @ 120 volts). If the optional control power transformer is used, the customer needs

only to provide a power connection for the evaporator heat tape.

11. If factory circuit breakers are supplied with the chiller, then these values represent Maximum Overcurrent

Protection (MOP).

RLC-PRC016-EN30

Jobsite

Connections

Table J-1 – Customer Wire Selection

Wire Selection Size Wire Selection Size Wire Selection Size

to Main Terminal Block to Disconnect (1) to Circuit Breaker (1)

Connector Connector Factory Mounted Internal Connector

Unit Rated Terminal Size Wire Range Disconnect Size Wire Range Circuit Breaker Size (3) Wire Range

Size Voltage Ckt 1 Ckt 1 Ckt 1 Ckt 1 Ckt 1 Ckt 1

RTAA 70 200/60 760 Amp Lug Size D 400 Amp Lug Size B 350 Amp Lug Size B

230/60 760 Amp Lug Size D 400 Amp Lug Size B 300 Amp Lug Size B

380/60 335 Amp Lug Size E 250 Amp Lug Size A 200 Amp Lug Size A

460/60 335 Amp Lug Size E 250 Amp Lug Size A 150 Amp Lug Size A

575/60 335 Amp Lug Size E 250 Amp Lug Size A 125 Amp Lug Size A

380/50 335 Amp Lug Size E 250 Amp Lug Size A 150 Amp Lug Size A

400/50 335 Amp Lug Size E 250 Amp Lug Size A 150 Amp Lug Size A

415/50 335 Amp Lug Size E 250 Amp Lug Size A 150 Amp Lug Size A

RTAA 80 200/60 760 Amp Lug Size D 400 Amp Lug Size B 400 Amp Lug Size B

230/60 760 Amp Lug Size D 400 Amp Lug Size B 350 Amp Lug Size B

380/60 335 Amp Lug Size E 250 Amp Lug Size A 225 Amp Lug Size A

460/60 335 Amp Lug Size E 250 Amp Lug Size A 175 Amp Lug Size A

575/60 335 Amp Lug Size E 250 Amp Lug Size A 150 Amp Lug Size A

380/50 335 Amp Lug Size E 250 Amp Lug Size A 175 Amp Lug Size A

400/50 335 Amp Lug Size E 250 Amp Lug Size A 175 Amp Lug Size A

415/50 335 Amp Lug Size E 250 Amp Lug Size A 175 Amp Lug Size A

RTAA 90 200/60 760 Amp Lug Size D 600 Amp Lug Size C 500 Amp Lug Size C

230/60 760 Amp Lug Size D 400 Amp Lug Size B 450 Amp Lug Size C

380/60 335 Amp Lug Size E 400 Amp Lug Size B 300 Amp Lug Size B

460/60 335 Amp Lug Size E 250 Amp Lug Size A 225 Amp Lug Size A

575/60 335 Amp Lug Size E 250 Amp Lug Size A 175 Amp Lug Size A

380/50 335 Amp Lug Size E 250 Amp Lug Size A 225 Amp Lug Size A

400/50 335 Amp Lug Size E 250 Amp Lug Size A 225 Amp Lug Size A

415/50 335 Amp Lug Size E 250 Amp Lug Size A 225 Amp Lug Size A

RTAA 100 200/60 760 Amp Lug Size D 600 Amp Lug Size C 600 Amp Lug Size C

230/60 760 Amp Lug Size D 600 Amp Lug Size C 500 Amp Lug Size C

380/60 335 Amp Lug Size E 400 Amp Lug Size B 300 Amp Lug Size B

460/60 335 Amp Lug Size E 250 Amp Lug Size A 250 Amp Lug Size A

575/60 335 Amp Lug Size E 250 Amp Lug Size A 200 Amp Lug Size A

380/50 335 Amp Lug Size E 250 Amp Lug Size A 250 Amp Lug Size A

400/50 335 Amp Lug Size E 250 Amp Lug Size A 250 Amp Lug Size A

415/50 335 Amp Lug Size E 250 Amp Lug Size A 250 Amp Lug Size A

RTAA 110 200/60 760 Amp Lug Size D 600 Amp Lug Size C 600 Amp Lug Size C

230/60 760 Amp Lug Size D 600 Amp Lug Size C 600 Amp Lug Size C

380/60 335 Amp Lug Size E 400 Amp Lug Size B 350 Amp Lug Size B

460/60 335 Amp Lug Size E 400 Amp Lug Size B 300 Amp Lug Size B

575/60 335 Amp Lug Size E 250 Amp Lug Size A 225 Amp Lug Size A

380/50 335 Amp Lug Size E 400 Amp Lug Size B 300 Amp Lug Size B

400/50 335 Amp Lug Size E 400 Amp Lug Size B 300 Amp Lug Size B

415/50 335 Amp Lug Size E 400 Amp Lug Size B 300 Amp Lug Size B

RTAA 125 200/60 760 Amp Lug Size D 600 Amp Lug Size C N/A N/A

230/60 760 Amp Lug Size D 600 Amp Lug Size C 600 Amp Lug Size C

380/60 335 Amp Lug Size E 400 Amp Lug Size B 350 Amp Lug Size B

460/60 335 Amp Lug Size E 400 Amp Lug Size B 300 Amp Lug Size B

575/60 335 Amp Lug Size E 250 Amp Lug Size A 225 Amp Lug Size A

380/50 335 Amp Lug Size E 400 Amp Lug Size B 300 Amp Lug Size B

400/50 335 Amp Lug Size E 400 Amp Lug Size B 300 Amp Lug Size B

415/50 335 Amp Lug Size E 400 Amp Lug Size B 300 Amp Lug Size B

Lug Size A = #4 to 350 MCM per phase

Lug Size B = 2/0 to 250 MCM & 2/0 to 500 MCM per phase

Lug Size C = (2) 400 MCM to 500 MCM per phase

Lug Size D = (2) #4 to 500 MCM per phase

Lug Size E = #6 to 400 MCM per phase

Lug Size F = (2) #2 to 600 MCM per phase

Lug Size G = (2) #1 to 500 MCM per phase

Lug Size H = (4) #2 to 600 MCM per phase

Notes

1. Non-fused unit disconnect and circuit breaker are optional.

2. Copper wire only, sized per N.E.C., based on nameplate minimum circuit ampacity (MCA).

3. Circuit Breaker sizes are for factory mounted only. Field installed circuit breakers need to be sized using HACR breaker recommendations from Table E-1.

RLC-PRC016-EN

Jobsite

Connections

Figure J-1 — Typical Jobsite Wiring

NOTES:

1. DASHED LINES INDICATE RECOMMENDED FIELD WIRING BY OTHERS.

CHECK SALES ORDER TO DETERMINE IF WIRING IS REQUIRED FOR

SPECIFIC OPTIONS.

2. ALL THREE PHASE MOTORS SUPPLIED WITH THE UNIT ARE PROTECTED

UNDER PRIMARY SINGLE PHASE FAILURE CONDITIONS.

3. CAUTION - DO NOT ENERGIZE UNIT UNTIL CHECK OUT AND START-UP

PROCEDURES HAVE BEEN COMPLETED.

4 THE FOLLOWING CAPABILITIES ARE OPTIONAL - THEY ARE

IMPLEMENTED AND WIRED AS REQUIRED FOR A SPECIFIC SYSTEM

APPLICATION.

A ICE-MACHINE CONTROL (CANNOT BE USED WITH OPT. L)

B COMMUNICATIONS INTERFACE

D WYE-DELTA CLOSED TRANSITION STARTER

E CONTROL POWER TRANSFORMER.

H UNIT DISCONNECT, NON-FUSED

J CHILLED WATER RESET - RETURN WATER

K CHILLED WATER RESET - OUTDOOR AIR

L CHILLED WATER RESET - ZONE AIR (CANNOT BE USED WITH OPT. A)

S CHILLED WATER FLOW SWITCH (NOT REQUIRED FOR CHILLER

PROTECTION)

T REMOTE CLEAR LANGUAGE DISPLAY.

(BUFFER FOR DISPLAY LOCATED IN UNIT CONTROL PANEL.)

5. AUXILIARY CONTROLS FOR A CUSTOMER SPECIFIED OR INSTALLED LATCHING

TRIPOUT. THE CHILLER WILL RUN NORMALLY WHEN THE CONTACT IS CLOSED AND

TRIP THE CHILLER OFF ON MANUALLY RESETTABLE DIAGNOSTIC WHEN THE

CONTACT OPENS. MANUAL RESET IS ACCOMPLISHED AT THE LOCAL OR REMOTE

CLEAR LANGUAGE DISPLAY.

6 AUXILIARY CONTROLS FOR A CUSTOMER SPECIFIED OR INSTALLED REMOTE AUTO/

STOP FUNCTION. THE CHILLER WILL RUN NORMALLY WHEN THE CONTACT IS

CLOSED AND STOP THE CHILLER WHEN THE CONTACT IS OPEN. RE-CLOSURE OF THE

CONTACT WILL PERMIT THE CHILLER TO AUTOMATICALLY RETURN TO NORMAL

OPERATION. TO BE IN SERIES WITH WATER PUMP RELAY (3K21).

7 NORMALLY OPEN CONTACTS FOR REMOTE SHUTDOWN OR REFRIGERANT CIRCUIT

OPERATION. THE REFRIGERANT CIRCUIT WILL GO THRU A NORMAL SHUTDOWN

WHEN THE CONTACTS ARE CLOSED AND WILL AUTOMATICALLY RESUME NORMAL

START AND RUN MODES WHEN CONTACTS ARE OPEN.

WIRING

8 ALL CUSTOMER CONTROL CIRCUIT WIRING MUST HAVE A MINIMUM RATING OF 150

VOLTS.

9. ALL FIELD WIRING MUST BE IN ACCORDANCE WITH THE NATIONAL ELECTRICAL CODE

(NEC), STATE, AND LOCAL REQUIREMENTS. OUTSIDE THE UNITED STATES, OTHER

COUNTRIES APPLICABLE NATIONAL AND/OR LOCAL REQUIREMENTS SHALL APPLY.

REQUIRED WIRING

10 COPPER WIRE ONLY – SIZED PER N.E.C. – BASED ON NAMEPLATE MINIMUM CIRCUIT

AMPACITY (MCA). SEE CUSTOMER WIRE SELECTION TABLE.

11 2 WIRES, 115 VAC CIRCUIT. MINIMUM CONTACT RATING AT 115 VAC – 5.9 VA INRUSH.

1.3 VA SEALED.

12 FOR UNITS WITHOUT THE CONTROL POWER TRANSFORMER (1T1) OPTION, THE

CUSTOMER MUST PROVIDE CONTROL POWER OF 115 VAC, 60 HERTZ, SINGLE PHASE,

750 VA. THE CONTROL POWER TRANSFORMER (1T1) IS STANDARD ON 50 HERTZ

UNITS.

13 FOR ALL UNITS, THE HEAT TAPE MUST BE POWERED FROM A SEPARATE CUSTOMER

PROVIDED 115V, 60 HZ; OR 220V, 50 HZ, 420 WATT SOURCE.

RLC-PRC016-EN32

Controls

Microcomputer Controls

A microcomputer-based controller

controls the air-cooled Series R™ 70-125

ton chiller. The microcomputer controller

provides better control than past

controls as well as several new,

important benefits.

Adaptive Control™ Microprocessor

The microcomputer-based controller

allows Trane to optimize controls around

the chiller application and the specific

components used in the air-cooled

Series R™ chiller. For instance, the

compressor protection system is

specifically designed for the air-cooled

Series R™ chiller. A new leaving chilled

water temperature control algorithm

maintains accurate temperature control,

minimizes the drift from setpoint and

provides better building comfort. This

control, combined with linear

compressor unloading, also allows the

chiller to be applied in wider array of

applications, including variable primary

flow. The microcomputer control

incorporates improved chiller start-up,

load limiting, lead/lag, and compressor

run time equalization functions into

standard chiller operation. Interface with

outside systems such as building

automation controls is flexible and easy.

RLC-PRC016-EN

Controls

Simple Interface With Other Control

Systems

Microcomputer controls afford simple

interface with other control systems,

such as time clocks, building automation

systems and ice storage systems. Wiring

to the unit can be as simple as two

wires! This means you can have the

flexibility to meet job requirements while

not having to learn a complicated control

system.

Safety Controls

A centralized microcomputer offers a

higher level of machine protection. Since

the safety controls are smarter, they limit

compressor loading to avoid

compressor or evaporator failures,

thereby minimizing nuisance shutdown.

The Unit Control Module (UCM) directly

senses the control variables that govern

the loading of the chiller: motor current

draw, evaporator temperature,

condenser temperature, etc. When any

one of the variables approaches a limit

condition where the unit may be

damaged or shutdown on a safety, the

UCM takes corrective action to avoid

shutdown and keep the chiller operating.

It does this through combined actions of

compressor slide valve modulation,

electronic expansion valve modulation

and fan staging. The UCM optimizes

total chiller power consumption during

normal operating conditions. During

abnormal operating conditions, the UCM

will continue to optimize chiller

performance by taking the corrective

action necessary to avoid shutdown.

This keeps cooling capacity available

until the problem can be solved.

Whenever possible, the chiller is allowed

to perform its function; make chilled

water. In addition, microcomputer

controls allow for more types of

protection such as over and under

voltage. Overall, the safety controls help

keep the building running and out of

trouble.

Monitoring And Diagnostics

Since the microcomputer provides all

control functions, it can easily indicate

such parameters as leaving chilled water

temperature and capacity stage.

If a failure does occur, one of over 90

individual diagnostic and operating

codes will be used to indicate the

problem, giving more specific

information about the failure. All of the

monitoring and diagnostic information is

displayed directly on a microcomputer

display.

Interface With The Trane Integrated

Comfort™ System (ICS)

When the air-cooled Series R™ chiller is

used in conjunction with a Trane Tracer™

system, the unit can be monitored and

controlled from a remote location. The

air-cooled Series R™ chiller can be

controlled to fit into the overall building

automation strategy by using time of

day scheduling, timed override, duty

cycling, demand limiting, and chiller

sequencing. A building owner can

completely monitor the air-cooled Series

R™ chiller from the Tracer system, as all

of the monitoring information indicated

on the microcomputer can be read off

the Tracer system display. In addition, all

the powerful diagnostic information can

be read back at the Tracer system. Best

of all, this powerful capability comes

over a single twisted pair of wires!

Air-cooled Series R™ chillers can

interface with many different external

control systems, from simple stand-

alone units to ice making systems. Each

unit requires a single-source, three-

phase power supply and two 115-volt

power supplies. When an optional

control power transformer is used, a

single 115-volt supply handles the

evaporator heat tape. For basic stand-

alone applications, the interface with

outside control is no different than for

other Trane chillers. However, the RTAA

units have many features that can be

used to interface with building control

systems.

Standard Features

1. External Auto/Stop

A jobsite provided contact closure will

turn the unit on and off.

Note: Do not use the chilled water pump

to stop the chiller.

2. Chilled Waterflow Interlock

A jobsite provided contact closure from

a chilled water pump contactor or a flow

switch is required and will allow unit

operation if a load exists. This feature

will allow the unit to run in conjunction

with the pump system.

3. External Interlock

A jobsite supplied contact opening wired

to this input will turn the unit off and

require a manual reset of the unit

microcomputer. This closure is typically

triggered by a jobsite supplied system

such as a fire alarm.

4. Chilled Water Pump Control

Unit controls provide an output to

control chilled water pump(s). One

contact closure to the chiller is all that is

required to initiate the chilled water

system.

5. Remote Running and Alarm Indication

Contacts

The unit provides three single-pole/

double-throw contact closures to

indicate that a failure has occurred, if any

compressors are running, or if the

compressors are running at maximum

capacity. These contact closures may be

used to trigger jobsite supplied alarm

lights or alarm bells.

RLC-PRC016-EN34

Controls

Optional Features

1. Communication Interface

Capability for communication with one

of the following control devices:

Trane Tracer™ Building Automation

Systems

Remote Display

2. External Chilled Water Setpoint

Allows the external setting independent

of the front panel setpoint by one of

three means:

a) a remote resistor input (fixed or

adjustable), b) a 2-10 VDC input, or

c) a 4-20 mA input.

3. External Current Limit Setpoint

Allows the external setting independent

of the front panel set point by one of

three means:

a) a remote resistor input (fixed or

adjustable), b) a 2-10 VDC input, or

c) a 4-20 mA input.

4. Ice Making Control

Provides interface with ice making

control systems.

5. Chilled Water Temperature Reset

Reset can be based on return water

temperature or outdoor air temperature.

The next section reviews the

recommended interface with the

following control systems:

Stand-Alone Unit

Integrated Comfort™ System Interface

Non-Trane Building Automation

Systems

Ice Making Systems

Remote Display

Each system description includes a list of

those features which must be used,

those features which can be used and

which external Trane device is required.

RLC-PRC016-EN

Trane Controls System

Tracer Summit controls — Interface With

The Trane Integrated Comfort System

(ICS)

Trane Chiller Plant Control

The Tracer Summit Chiller Plant Building

Management System with Chiller Plant

Control provides building automation

and energy management functions

through stand-alone control. The Chiller

Plant Control is capable of monitoring

and controlling your entire chiller plant

system.

Application software available:

• Time-of-day scheduling

• Demand limiting

• Chiller sequencing

• Process control language

• Boolean processing

• Zone control

• Reports and logs

• Custom messages

• Run time and maintenance

• Trend log

• PID control loops

And of course, the Trane Chiller Plant

Control can be used on a stand-alone

basis or tied into a complete building

automation system.

When the air-cooled Series R™ 70-125 ton

chiller is used in conjunction with a Trane

Tracer™ Summit system, the unit can be

monitored and controlled from a remote

location. The air-cooled Series R™ 70-125

ton chiller can be controlled to fit into the

overall building automation strategy by

using time of day scheduling, timed

override, demand limiting, and chiller

sequencing. A building owner can

completely monitor the air-cooled Series

R™ 70-125 ton chiller from the Tracer

system, since all of the monitoring

information indicated on the unit

controller’s microcomputer can be read

off the Tracer system display. In addition,

all the powerful diagnostic information

can be read back at the Tracer system.

Best of all, this powerful capability comes

over a single twisted pair of wires! Air-

Controls

Modem

Remote PC Workstation PC Workstation Notebook

PC Workstation

LAN

Building

Control Unit

Building

Control Unit

VariTrane®

Variable Air Volume

Terminal

Room temperature

sensor Diffuser

VariTrane®

Variable Air Volume

Terminal

Room temperature

sensor Diffuser

Exhaust Fan

Air-cooled Series R™ Chiller

Modular Climate Changer®

Air Handler

cooled Series R™ 70-125 ton chillers can

interface with many different external

control systems, from simple stand-

alone units to ice making systems. Each

unit requires a single-source, three-

phase power supply and a 115V/60Hz,

220V/50Hz power supply. The added

power supply powers the evaporator

heaters.

A single twisted pair of wires tied directly

between the air-cooled Series R™ 70-125

ton chiller and a Tracer™ Summit system

provides control, monitoring and

diagnostic capabilities. Control functions

include auto/stop, adjustment of leaving

water temperature setpoint, compressor

operation lockout for kW demand

limiting and control of ice making mode.

The Tracer system reads monitoring

information such as entering and leaving

evaporator water temperatures and

outdoor air temperature. Over 60

individual diagnostic codes can be read

by the Tracer system. In addition, the

Tracer system can provide sequencing

control for up to 25 units on the same

chilled water loop. Pump sequencing

control can be provided from the Tracer

system. Tracer ICS is not available in

conjunction with the remote display or

the external setpoint capability.

RLC-PRC016-EN36

Required Options

Tracer Interface

Additional Options That May Be Used

Ice Making Control

External Trane Devices Required

Tracer Summit™, Tracer 100 System or

Tracer Chiller Plant Control

Ice Making Systems Controls

An ice making option may be ordered

with the air-cooled Series R™ chiller. The

unit will have two operating modes, ice

making and normal daytime cooling. In

the ice making mode, the air-cooled

Series R™ 70-125 ton chiller will operate

at full compressor capacity until the

return chilled fluid temperature entering

the evaporator meets the ice making

setpoint. This ice making setpoint is

manually adjusted on the unit’s

Controls

microcomputer. Two input signals are

required to the air-cooled Series R™ 70-

125 ton chiller for the ice making option.

The first is an auto/stop signal for

scheduling and the second is required to

switch the unit in between the ice

making mode and normal daytime

operation. The signals are provided by a

remote job site building automation

device such as a time clock or a manual

switch. In addition, the signals may be

provided over the twisted wire pair from

a Tracer™ system.

Required Options

External Auto/Stop (Standard)

Ice Making Control

Additional Options That May Be Used

Failure Indication Contacts

Communications Interface (For Tracer

Systems)

Chilled Water Temperature Reset

External Trane Devices Required —

None

Note: All wiring outside the unit is

supplied at the job site.

RLC-PRC016-EN

Controls

PC Workstation System Level

Controller

MP581 Programmable

Controller

Air-cooled Series R™

Chiller

MP581 Programmable

Controller

Ice Tanks

Boiler

Pumps

Simple Interface With Other Control

Systems

Microcomputer controls afford simple

interface with other control systems,

such as time clocks, building automation

systems and ice storage systems. This

means you have the flexibility to meet

job requirements while not having to

learn a complicated control system. This

setup has the same standard features as

a stand-alone water chiller, with the

possibility of having the following

optional features.

Alarm Indication Contacts

The unit provides three single-pole/

double-throw contact closures to

indicate that a failure has occurred,

compressor on/off status, or if the

compressors are running at maximum

capacity. These contact closures may be

used to trigger jobsite supplied alarm

lights or alarm bells.

Other Control Systems

Interface With Other Control Systems

Stand-alone Unit

Interface to stand-alone units is very

simple; only a remote auto/stop for

scheduling is required for unit operation.

Signals from the chilled water pump

contactor auxiliary or a flow switch are

wired to the chilled waterflow interlock.

Signals from a timeclock or some other

remote device are wired to the external

auto/stop input.

Note: Do not use the chilled water pump

to stop the chiller.

Required Features

1. External Auto/Stop (Standard)

2. Chilled Waterflow Interlock (Standard)

Additional Features That May Be Used

1. Remote Running and Alarm Indication

Contacts

2. External Interlock (Standard)

3. Chilled Water Temperature Reset

External Trane Devices Required —

None

External Chilled Water Setpoint

Allows the external setting independent

of the front panel setpoint by one of two

means:

a) 2-10 VDC input, or

b) 4-20 mA input.

External Current Limit Setpoint

Allows the external setting independent

of the front panel setpoint by one of two

means:

a) 2-10 VDC input, or

b) 4-20 mA input.

Ice Making Control

Provides interface with ice making

control systems.

Chilled Water Temperature Reset

Reset can be based on return water

temperature or outdoor air temperature.

RLC-PRC016-EN38

Controls

Ice Making Systems

An ice making option may be ordered

with the air-cooled Series R™ chiller. The

unit will have two operating modes, ice

making and normal daytime cooling. In

the ice making mode, the air-cooled

Series R™ chiller will operate at full

compressor capacity until the return

chilled fluid temperature entering the

evaporator meets the ice making set

point. This ice making setpoint is

manually adjusted on the unit’s

microcomputer. Two input signals are

required to the air-cooled Series R™

chiller for the ice making option. The first

is an auto/stop signal for scheduling and

the second is required to switch the unit

in between the ice making mode and

normal daytime operation. The signals

are provided by a remote jobsite building

automation device such as a time clock

or a manual switch. In addition, the

signals may be provided over the twisted

wire pair from a Tracer™ system.

Required Features

1. External Auto/Stop (Standard)

2. Ice Making Control

Additional Features That May Be Used

1. Remote Running and Failure

Indication Contacts

2. Communications Interface (For Tracer

Systems)

3. Chilled Water Temperature Reset

(Indoor zone reset not available with

ice making option).

External Trane Devices Required —

None

RLC-PRC016-EN

Remote Display

The remote display option allows the

operator to monitor chiller operation

from a remote location. Over 60 essential

chiller operating parameters can be

transmitted between the unit control

module on the chiller and the remote

display via a bi-directional

communications link. Only one twisted

wire pair is required between the chiller

and the remote display. In addition to

monitoring chiller operation, alarms and

unit diagnostics can be read from the

remote display. Furthermore, the chilled

water temperature setpoint can be

adjusted and the chiller can be turned on

or off from the remote display.

Required Features

1. Communications Interface

Additional Features That May Be Used

1. External Interlock (Standard)

2. Chilled Water Temperature Reset

3. Chilled Waterflow Interlock

(Standard)

4. Remote Running and Failure

Indication Contacts

External Trane Devices Required

1. Remote Display Panel

Controls

RLC-PRC016-EN40

Dimensional Data

Figure D-1 — RTAA 70-125 Unit Dimensions

UNIT SIZE A B C D E F G K

70-100 .492m 1.213m 2.851m 102mm 4.940m 2.317m 1.549m 1.626m

(1’-7 3/8”)(3’-11 3/4”)(9’-4 1/4”)(4”) (16’-2 1/2”)(7’-7 1/4”)(5’-1”)(5’-4”)

110-125 .479m 1.032m 3.499m 152mm 5.626m 2.661m 1.511m 1.930m

(1’-6 7/8”)(3’-4 5/8”) (11’-5 3/4”)(6”) (18’-5 1/2”)(8’-8 3/4”)(4’-11 1/2”)(6’-4”)

NO. OF FANS PER UNIT

UNIT SIZE 70 80 90 100 110 125

NO. FANS

STD UNIT 8 8 9 10 10 10

115 VOLT & LOW VOLTAGE CONNECTIONS

PANEL TYPE L M N P Q

X-LINE

CONTROL .889m .927m 1.206m 1.245m 1.283m

PANEL (2’-11”)(3’-0 1/2”)(3’-11 1/2”)(4’-1”)(4’-2 1/2”)

WYE DELTA

CONTROL 76mm 114mm .39m .43m .47m

PANEL (3”) (4 1/2”)(1’-3 1/2”)(1’-5”)(1’-8 1/2”)

RLC-PRC016-EN

Weights

Table W-1 — Packaged Unit Weights (Aluminum)

Isolator Location Operating Shipping

Unit Size Units 1 2 3 4 5 6 Weight Weight

RTAA 70 lbs. 1582 1608 1212 1232 842 856 7332 7000

kg 718 729 550 559 382 388 3326 3175

RTAA 80 lbs. 1587 1613 1218 1237 848 862 7365 7049

kg 720 732 552 561 385 391 3341 3197

RTAA 90 lbs. 1639 1596 1271 1237 903 879 7525 7234

kg 743 724 577 561 410 399 3413 3281

RTAA 100 lbs. 1640 1668 1281 1303 922 937 7751 7483

kg 744 757 581 591 418 425 3516 3394

RTAA 110 lbs. 1933 1885 1480 1443 1027 1001 8769 8326

kg 877 855 671 655 466 454 3978 3777

RTAA 125 lbs. 1871 1902 1445 1469 1019 1036 8742 8360

kg 849 863 655 666 462 470 3965 3792

Table W-2 — Packaged Unit Weights (Copper)

Isolator Location Operating Shipping

Unit Size Units 1 2 3 4 5 6 Weight Weight

RTAA 70 lbs. 1693 1719 1323 1343 953 966 7997 7665

kg 768 780 600 609 432 438 3627 3477

RTAA 80 lbs. 1698 1724 1329 1348 959 972 8030 7714

kg 770 782 603 611 435 441 3642 3499

RTAA 90 lbs. 1754 1711 1386 1352 1018 993 8214 7923

kg 796 776 629 613 462 450 3726 3594

RTAA 100 lbs. 1759 1787 1400 1422 1041 1056 8465 8197

kg 798 811 635 645 472 479 3840 3718

RTAA 110 lbs. 2065 2017 1612 1575 1159 1133 9561 9118

kg 937 915 731 714 526 514 4337 4136

RTAA 125 lbs. 2016 2047 1590 1614 1164 1181 9612 9230

kg 914 928 721 732 528 536 4360 4187

RLC-PRC016-EN42

Options

Low Temperature Brine

The unit controls can be factory set to

handle low temperature brine

applications (0°F to 39°F).

Ice Making

The unit controls can be factory set to

handle ice making for thermal storage

applications.

Building Automation System

Communication Interface

Permits either bi-directional

communication to the Trane Integrated

Comfort™ system or permits remote

chilled water setpoint and demand

limiting by accepting a 4-20 mA or 2-10

Vdc analog signal.

Remote Display

In addition to controlling chiller

operation from remote location, the

remote display shall provide the

capability to monitor unit alarms and

diagnostics. Only one twisted pair is

required between the chiller and the

remote display .

Remote Evaporator

The remote evaporator is available as a

standard option.

This option provides an easily installed,

pre-engineered method of installing the

evaporator remotely indoors.

The remote evaporator is skid-mounted

and is shipped separately from the

outdoor (condensing) unit. Refrigerant

accessories, including electronic

expansion valve, moisture indicating

sightglass and removable core filter

drier, are shipped with the evaporator

skid. All refrigerant connections are

routed to one end of the evaporator skid

for easy connection. All electrical wiring

is factory installed and routed to a

terminal box (entering and leaving water

temperature sensor, evaporator

refrigerant temperature sensor and

electronic expansion valve control

wiring). Suction refrigerant temperature

sensors (two) must be field installed in

the field suction line piping next to the

evaporator connections.

Chilled Water Reset

This option provides the control logic

and field installed sensors for either load

based (return water temperature) or

temperature based (ambient or zone)

reset of leaving chilled water

temperature (requires Communication

Package).

Architectural Louvered Panels

Louvered panels cover the complete

condensing coil and the service area

beneath the coils.

Coil Protection

Louvered panels which protect the

condenser coils only.

Access Protection

A coated wire mesh which covers access

area underneath the condenser coils.

Control Power Transformer

This option eliminates the need to run

separate 115 volt control power to the

unit. A control power transformer is

factory installed and wired. A separate

115 volt power source is required for

60 Hz heat tape.

Low Ambient Option

The low ambient option consists of a

variable speed drive on the first fan of

each circuit and special control logic to

permit low temperature operation.

Low Ambient Lockout

A factory installed ambient sensor and

control logic can prevent starting below

the recommended temperature.

Non-Fused Power Disconnect Switch

A non-fused disconnect switch with a

through the door handle is provided to

disconnect main power.

Circuit Breaker

A standard interrupting molded case

capacity circuit breaker (UL approved) is

available. The circuit breaker can also be

used to disconnect the chiller from main

power with a through the door handle

and comes pre-wired from the factory

with terminal block power connections.

Neoprene Isolators

Isolators provide isolation between

chiller and structure to help eliminate

frequency transmission. Neoprene

isolators are more effective and

recommended over spring isolators.

Spring Isolators

Spring isolators help isolate the chiller

from the building structure.

Condenser Corrosion Protection

Copper fins and CompleteCoat are

available on all size units for corrosion

protection. Job site conditions should be

matched with the appropriate condenser

fin materials to inhibit coil corrosion and

ensure extended equipment life. The

CompleteCoat option provides fully

assembled coils with a flexible dip and

bake epoxy coating.

Convenience Outlet

Provides a 15 amp, 115 volt (60 Hz)

convenience outlet on the unit.

RLC-PRC016-EN

Typical Wiring

Diagram 70-125 Tons

NOTES:

1. DASHED LINES INDICATE RECOMMENDED FIELD WIRING BY OTHERS.

PHANTOM LINES INDICATE ALTERNATE CIRCUITRY OR AVAILABLE SALES

OPTION. CHECK SALES ORDER TO DETERMINE IF WIRING IS REQUIRED

FOR SPECIFIC OPTIONS.

2. ALL THREE PHASE MOTORS SUPPLIED WITH THE UNIT ARE PROTECTED

UNDER PRIMARY SINGLE PHASE FAILURE CONDITIONS.

3. CAUTION - DO NOT ENERGIZE UNIT UNTIL CHECK OUT AND START-UP

PROCEDURES HAVE BEEN COMPLETED.

4 SEE INSERT “A” FOR RESISTOR CONNECTIONS TO PROGRAM AN

EXTERNAL CHILLED WATER SETPOINT WHEN 4 - 20 mA OR A 2 - 10 VDC

SIGNAL IS NOT USED. SEE THE OPERATORS MANUAL FOR RESISTOR

VALUES.

5 SEE INSERT “B” FOR RESISTOR CONNECTIONS TO PROGRAM AN

EXTERNAL CURRENT LIMIT SETPOINT WHEN 4 - 20 mA OR A 2 - 10 VDC

SIGNAL IS NOT USED. SEE THE OPERATORS MANUAL FOR RESISTOR

VALUES.

6 SEE INSERT “C” FOR CONTACTS (IN PLACE OF THE ZONE TEMP. SENSOR)

FOR OPTIONAL ICE MACHINE CONTROL - OPTION “A”.

7. THE FOLLOWING CAPABILITIES ARE OPTIONAL - THEY ARE

IMPLEMENTED AND WIRED AS REQUIRED FOR A SPECIFIC SYSTEM

APPLICATION.

A ICE-MACHINE CONTROL (CANNOT BE USED WITH OPT. L)

B COMMUNICATIONS INTERFACE

D WYE-DELTA CLOSED TRANSITION STARTER

E CONTROL POWER TRANSFORMER.

H UNIT DISCONNECT, NON-FUSED

J CHILLED WATER RESET - RETURN WATER

K CHILLED WATER RESET - OUTDOOR AIR

L CHILLED WATER RESET - ZONE AIR (CANNOT BE USED WITH OPT. A)

O LOW AMBIENT LOCKOUT

S CHILLED WATER FLOW SWITCH (NOT REQUIRED FOR CHILLER

PROTECTION)

T REMOTE CLEAR LANGUAGE DISPLAY

WIRING AND CONTACT REQUIREMENTS:

20. ALL FIELD WIRING MUST BE IN ACCORDANCE WITH THE NATIONAL

ELECTRICAL CODE (NEC), STATE, AND LOCAL REQUIREMENTS. OUTSIDE

THE UNITED STATES, OTHER COUNTRIES APPLICABLE NATIONAL AND/

OR LOCAL REQUIREMENTS SHALL APPLY.

21 FOR UNITS WITHOUT THE CONTROL POWER TRANSFORMER (1T1)

OPTION, THE CUSTOMER MUST PROVIDE CONTROL POWER OF 115 VAC,

60 HERTZ, SINGLE PHASE, 750 VA ON 130 THRU 215 TON UNITS. THE

CONTROL POWER TRANSFORMER (1T1) IS STANDARD ON 50 HERTZ

UNITS.

22 FOR ALL UNITS, THE HEAT TAPE MUST BE POWERED FROM A SEPARATE

CUSTOMER PROVIDED 115 VAC, 420 WATT SOURCE FOR 200/230/420/575

60 HZ UNITS: 220 VAC, 420 WATT SOURCE FOR 346/1380/415 50 HZ UNITS.

FOR THE OPTIONAL HEAT RECOVERY HEAT TAPE IS 420 WATTS.

23 CUSTOMER SUPPLIED CONTACTS MUST BE COMPATIBLE WITH DRY

CIRCUIT 12 VDC, 45 mA RESISTIVE LOAD. SILVER OR GOLD PLATED

CONTACTS ARE RECOMMENDED.

24 30 VOLT OR LESS CIRCUIT. DO NOT RUN IN CONDUIT WITH HIGHER

VOLTAGE CIRCUITS. USE #14-18 AWG. SEE SELECTION TABLE.

25 MINIMUM PILOT DUTY CONTACT RATING AT 115 VAC; 5.9 VA INRUSH, 1.3

VA SEALED.

26 FIELD WIRED ELECTRICAL LOADING IS NOT TO EXCEED THE FOLLOWING

RATINGS:

TERMINALS DEVICE VOLTAGE SEALED VA INRUSH VA

1U1-TB4-1,2 1U1K1,NO 115 180 1150*

1U1-TB4-3 1U1K1,NC 115 180 1150*

1U1-TB4-5,4 1U1K2,NO 115 180 1150*

1U1-TB4-6,7 1U1K3,NC 115 180 1150*

1U1-TB4-8,9 1U1K2,NO 115 250 1150*

1U1-TB4-10,11 1U1K3,NC 115 180 1150*

*STANDARD PILOT DUTY RATING (35% POWER FACTOR).

27 WHEN CUSTOMER INPUT IS REQUIRED, REMOVE JUMPER AND INSTALL

CUSTOMER WIRING.

28 CHILLED WATER PUMP CONTROL FROM TRANE UNIT UCM MODULE

CHILLED WATER PUMP IS REQUIRED TO OPERATE A MINIMUM OF 1

MINUTE AFTER A COMMAND TO TERMINATE CHILLER OPERATION (UCM

WILL PROVIDE THE DELAY CONTACTS). CHILLED WATER SYSTEM

DEMAND SWITCH (5S2) IS CONNECTED TO THE UCM EXTERNAL AUTO/

STOP INPUT. NOTE: DO NOT USE THE CHILLED WATER PUMP TO STOP

THE CHILLER.

29 AS SHIPPED 380/415 50 HZ VOLT UNIT TRANSFORMER 1T1-(OPTIONAL) IS

WIRED FOR 415 VOLT OPERATION. IF UNIT IS TO BE OPERATED ON A 380

VOLT POWER SUPPLY, RE-CONNECT AS SHOWN IN INSET “D”.

REPROGRAM “UNIT LINE VOLTAGE” IN SERVICE SETTING MENU OF

CLEAR LANGUAGE DISPLAY FROM 415 TO 380.

30 K1, K2, K3 RELAY OUTPUTS CAN BE PROGRAMMED TO PERFORM

ALTERNATE FUNCTIONS. SEE INSTALLATION, OPERATION AND

MAINTENANCE MANUAL FOR DETAILS. FUNCTION #1 IS SHOWN.

RLC-PRC016-EN44

Typical Wiring

Diagram 70-125 Tons

RLC-PRC016-EN

Features

Summary

Reliability

• Proven Trane helical rotary screw

compressor design for longer life and

greater dependability.

• Fewer moving parts means less parts to

fail. Typical reciprocating compressors

have 4 times as many total parts and 15

times as many critical parts.

• Adaptive Control™ protects the chiller

when any of the system variables

approaches a limit condition that may

damage the unit or cause a shutdown.

The Unit Control Module takes

corrective action to keep the unit

running.

• Dual circuit design increases overall

system reliability.

• Unlike reciprocating designs, this

compressor can handle liquid slugging.

• Suction gas cooling allows the motor to

operate at lower temperatures for

longer life.

Trane RTAA Air-Cooled

Series R™ Chiller

Designed To Perform, Built To Last

Performance

• Superior full load efficiency. All units

meet ASHRAE 90.1-2001 Standard.

• Excellent part load performance is

achieved without resorting to

manifolded multiple reciprocating

compressors.

• Use of an electronic expansion valve

significantly improves part load

performance by minimizing superheat

in the evaporator and allowing the

chiller to run at reduced condensing

temperatures.

• Unique compressor sequencing

equalizes not only starts, but operating

hours as well.

Trouble-Free Operation and Start-Up

• Adaptive Control™ microprocessor

keeps the Series R™ chiller on-line

when others would shut down.

• Fewer nuisance trips means less

expense from unnecessary service

calls.

• Factory installed and tested options

keep start-up time and expenses

minimized.

• Easy interface capability with the Trane

Integrated Comfort™ system via a

single twisted pair of wires.

• Optional remote display panel

simplifies chiller monitoring/ control.

• Packed stock availability for your

ordering convenience.

RLC-PRC016-EN46

Mechanical

Specifications

General

Units are leak and pressure tested at 450

psig high side, 300 psig low side, then

evacuated and charged. Packaged units

ship with a full operating charge of oil

and refrigerant. Unit panels, structural

elements and control boxes are

constructed of 12-gauge galvanized steel

and mounted on a welded structural

steel base. Unit panels and control boxes

are finished with a baked on powder

paint, and the structural base with an air

dry paint. All paint meets the

requirement for outdoor equipment of

the U.S. Navy and other federal

government agencies.

Evaporator

The evaporator is a tube-in-shell heat

exchanger design with internally finned

copper tubes roller expanded into the

tube sheet. The evaporator is designed,

tested and stamped in accordance with

ASME for a refrigerant side working

pressure of 300 psig. The evaporator is

designed for a water side working

pressure of 215 psig. Water connections

are grooved pipe. The evaporator has

one water pass with a series of internal

baffles. Each shell includes a vent, a

drain and fittings for temperature control

sensors and is insulated with 3/4-inch

Armaflex II or equal insulation (K=0.26).

Heat tape with thermostat is provided to

protect the evaporator from freezing at

ambient temperatures down to -20°F.

Condenser and Fans

Air-cooled condenser coils have

aluminum fins mechanically bonded to

internally finned seamless copper

tubing. The condenser coil has an

integral subcooling circuit and also

provides oil cooling for the compressor

bearing and injection oil. Condensers are

factory proof and leak tested at

506 psig.

Direct-drive vertical discharge condenser

fans are dynamically balanced. Three-

phase condenser fan motors with

permanently lubricated ball bearing and

internal thermal overload protection are

provided. Standard units will start and

operate down to 25°F ambient.

Compressor and Lube Oil System

The rotary screw compressor is semi-

hermetic, direct drive, 3600 rpm, with

capacity control slide valve, rolling

element bearings, differential refrigerant

pressure oil pump and oil heater. The

motor is a suction gas cooled,

hermetically sealed, two-pole squirrel

cage induction motor.

Oil separator and filtration devices are

provided separate from the compressor.

Check valves in the compressor

discharge and lube oil system and a

solenoid valve in the lube system are

provided.

Remote Evaporator

The evaporator is a tube-in-shell heat

exchanger, designed with internally-

finned copper tubes that are rolled

expanded into the tube sheet. The

evaporator is designed, tested and

stamped for a refrigerant side working

pressure of 300 psig, in accordance with

ASME. The evaporator is designed for a

water side working pressure of 215 psig.

Water connections are victaulic. The

evaporator has one water pass, with a

series of internal baffles.

Each shell includes a vent and drain

connection, as well as factory-mounted

entering and leaving water temperature

control sensors and evaporator

refrigerant temperature sensors. The

evaporator is insulated with 3/4-inch

Armaflex II or equal insulation (K=0.26).

The evaporator is skid-mounted and is

shipped separately from the outdoor

(condensing) unit. Refrigerant

accessories, including electronic

expansion valve, moisture indicating

sightglass and removable core filter

drier, are shipped with the evaporator

skid. All refrigerant connections are

routed to one end of evaporator skid for

easy connection. All electrical wiring is

factory installed and routed to a terminal

box (entering and leaving water

temperature sensor, evaporator

refrigerant temperature sensor and

electronic expansion valve control

wiring). Suction refrigerant temperature

sensors (two) must be field installed in

the field suction line piping next to the

evaporator connections.

RLC-PRC016-EN

Mechanical

Specifications

Refrigeration Circuits

Each unit has two refrigerant circuits,

with one rotary screw compressor per

circuit. Each refrigerant circuit includes a

compressor suction and discharge

service valve, liquid line shutoff valve,

removable core filter drier, liquid line

sight glass with moisture indicator,

charging port and an electronic

expansion valve. Fully modulating

compressors and electronic expansion

valves provide variable capacity

modulation over the entire operating

range.

Unit Controls

All unit controls are housed in a

weathertight enclosure with removable

plates to allow for customer connection

of power wiring and remote interlocks.

All controls, including sensors, are

factory mounted and tested prior to

shipment. All cataloged units are

UL listed.

Microcomputer controls provide all

control functions including start-up and

shut down, leaving chilled water

temperature control, compressor and

electronic expansion valve modulation,

fan sequencing, antirecycle logic,

automatic lead/lag compressor starting

and load limiting.

The unit control module, utilizing

Adaptive Control™ microprocessor,

automatically takes action to avoid unit

shutdown due to abnormal operating

conditions associated with low

refrigerant temperature, high condensing

temperature and motor current overload.

Should the abnormal operating condition

continue until a protective limit is

violated, the unit will be shut down.

Unit protective functions include loss of

chilled water flow, evaporator freezing,

loss of refrigerant, low refrigerant

pressure, high refrigerant pressure,

reverse rotation, compressor starting

and running over current, phase loss,

phase imbalance, phase reversal, and

loss of oil flow.

A menu driven digital display indicates

over 20 operating data points including

chilled water setpoint, current limit

setpoint, leaving chilled water

temperature, evaporator and condenser

refrigerant pressures and temperatures.

Over 60 diagnostic checks are made and

displayed when a problem is detected.

The digital display can be read and

advanced on the unit without opening

any control panel doors.

Standard power connections include

main three phase power and two 115

volt single phase power connections for

control power and heat tape.

Starters

Starters are housed in a weathertight

enclosure with removable cover plate to

allow for customer connection of power

wiring. Across-the-line starters are

standard on all 460-575 volt units. An

optional Wye Delta closed transition

starter (33 percent of LRA inrush) is

available. Typically, Trane helical rotary

compressors are up to full speed in one

second when started across-the-line and

have equivalent inrush with similar size

reciprocating compressor with part wind

starters.

RLC-PRC016-EN48

Standard

Conversion Table

Trane has a policy of continuous product and product data improvement and reserves the right to change

design and specifications without notice.

Literature Order Number

File Number

Supersedes

Stocking Location

Trane

A business of American Standard Companies

www.trane.com

For more information contact your local district

office or e-mail us at comfort@trane.com

RLC-PRC016-EN

PL-RF-RLC-PRC016-EN-08 02

RLC-DS-2

Inland-La Crosse

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