Trane CSRA025FAF0 Owner's manual

CSRA-SVX02A-EN
Models:
CSRA025FAF0,
CSRA040FAF0, and
CSRA060FAF0
Installation
Operation
Maintenance
25, 40 and 60 Ton Air-Cooled
Cold Generators®
© 2002 American Standard Inc. All Rights Reserved

2CSRA-SVX02A-EN
Table of
Contents
General Information
Earnings and Cautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Literature Change History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Overview of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Model Number Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unit Nameplate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Evaporator Barrel Nameplate. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Compressor Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Input Devices & System Functions. . . . . . . . . . . . . . . . . . . . . . . 9
Unit Component “Layout” and “Ship with” Locations . . . . . . . . 15
Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Installation
Unit Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Unit Dimensions & Weight Information. . . . . . . . . . . . . . . . . . . 16
Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Leveling the Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Shipping Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
General Unit Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Chilled Water Piping Requirements . . . . . . . . . . . . . . . . . . . . . 23
Main Electrical Power Requirements . . . . . . . . . . . . . . . . . . . . 24
Chilled Water Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Final Water Piping Connections. . . . . . . . . . . . . . . . . . . . . . . . 26
Freeze Protection from Ambient Conditions. . . . . . . . . . . . . . . 26
Electrical Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Electrical Cable Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Cam-lok Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Pig-tail Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Flexible Hose Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Dixon Coupling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Hard Pipe Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Field Installed Power Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Circuit Breaker External Handle. . . . . . . . . . . . . . . . . . . . . . . . 38
Main Unit Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Power Wire Sizing and Protection Device Equations. . . . . . . . 41
Field Installed Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Controls using 24 VAC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Controls using DC Analog Input/Outputs . . . . . . . . . . . . . . . . . 44
Controls using DC Communication Links. . . . . . . . . . . . . . . . . 45
Ice Building Control Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
System Pre-Start Procedures
Voltage Imbalance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Electrical Phasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

CSRA-SVX02A-EN 3
Table of
Contents
System Start-Up
Chilled Water Circulating Pump . . . . . . . . . . . . . . . . . . . . . . . . 59
Verifying Proper Fan Rotation . . . . . . . . . . . . . . . . . . . . . . . . . 63
Compressor Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Proper Refrigerant Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Compressor Crankcase Heaters . . . . . . . . . . . . . . . . . . . . . . . 72
Low Ambient Damper Adjustment . . . . . . . . . . . . . . . . . . . . . . 72
Final System Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Service & Maintenance
Compressor Operational Sounds. . . . . . . . . . . . . . . . . . . . . . . 75
Scroll Compressor Replacement . . . . . . . . . . . . . . . . . . . . . . . 75
Fuse Replacement Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Monthly Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Annual Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Final Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

4CSRA-SVX02A-EN
General
Information
Literature History
CSRA-SVX02A-EN (May 2002)
Original issue of manual. Describes the Installation, Operation and Mainte-
nance procedures for the unit.
Reference: CGAF-IOM-2 (Non-rental CGAF Chiller)
Overview of Manual
Note: One copy of this document ships inside the control panel of each unit
and is customer property. It must be retained by the unit's maintenance
personnel.
This booklet describes proper installation, operation, and maintenance
procedures for air cooled systems. By carefully reviewing the information
within this manual and following the instructions, the risk of improper
operation and/or component damage will be minimized.
It is important that periodic maintenance be performed to help assure trouble
free operation. A maintenance schedule is provided at the end of this
manual. Should equipment failure occur, contact a qualified service
organization with qualified, experienced HVAC technicians to properly
diagnose and repair this equipment.
NOTICE:
Warnings and Cautions appear at appropriate sections throughout
this manual. Read these carefully.
WARNING -Indicates a potentially hazardous situation which,
if not avoided, could result in death or serious injury.
CAUTION -Indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury. It may also be
used to alert against unsafe practices.
CAUTION –Indicates a situation that may result in equipment or
property-damage-only accidents.

CSRA-SVX02A-EN 5
General
Information
Important Note: Environmental scientists have found evidence that
refrigerant emissions contribute to depletion of ozone in the upper
atmosphere and can increase global warming. Trane encourages every
effort to eliminate, if possible, or vigorously reduce the emission of CFC,
HCFC and HFC refrigerant to the atmosphere that can result from
installation, operation, routine maintenance, or major service on this
equipment. Only technicians with EPA certification should be allowed to
handle CFC, HCFC or HFC refrigerants. Compliance or certification to other
local or state codes may also be required when handling refrigerants. Always
act in a responsible manner to conserve refrigerants.
Model Number Description
All Trane products are identified by a multiple-character model number that
precisely identifies a particular type of unit. An explanation of the
alphanumeric identification code is provided in Figure 1a. Its use will enable
the owner/operator, installing contractors, and service engineers to define
the operation, specific components, and other options for any specific unit.
When ordering replacement parts or requesting service, be sure to refer to
the specific model number, serial number, and DL number (if applicable)
stamped on the unit nameplate.
Unit Nameplate
The ChillerSource unit nameplate is located on the panel adjacent to hinged
chiller control panel door. It includes the model number, serial number,
electrical characteristics, refrigerant charge, as well as other pertinent data.
A Mylar and small metal chiller nameplate with the Model Number, Serial
Number, and Unit Weight is located on the outside upper right corner of the
control panel door. An additional nameplate is located on the inside of the
control panel door. See Figure 1b.
When ordering replacement parts or requesting service, be sure to refer to
the specific model number, serial number, and DL number (if applicable)
stamped on the unit nameplate.
Evaporator Barrel Nameplate
The nameplate is located on the top of the evaporator barrel near the supply-
end tube sheet. The word “Nameplate” is stenciled on the insulation. To view
the nameplate, remove the tape over the area and spread the insulation. Re-
tape the insulation after viewing.
Compressor Nameplate
The nameplate for the “Scroll” compressors are located on the compressor
lower housing.

6CSRA-SVX02A-EN
General
Information
Figure 1a — Model Number Description

CSRA-SVX02A-EN 7
General
Information
Figure 1b — Unit Nameplate
Unit Description
Before shipment, each unit is leak tested, dehydrated, charged with
refrigerant and compressor oil, and run tested for proper control operation.
Each unit is equipped with manifolded scroll compressors. Each manifolded
set of compressors is piped in parallel and utilizes a passive oil management
system to maintain proper compressor oil level.
The condenser coils are aluminum fin, mechanically bonded to copper
tubing. Copper-fin coils are optional. Louvered condenser grilles for coil
protection are standard.
Direct-drive, vertical discharge condenser fans are provided with built-in
thermal overload protection.
For “Ship with” items, refer to the Unit Component “Layout” and “Ship with”
Locations illustration.
Low ambient dampers are provided for low ambient operation.

8CSRA-SVX02A-EN
General
Information
The shell-and-tube type evaporator used in each air-cooled Cold Generator
is manufactured in accordance with ASME standards. Each evaporator is
fully insulated and equipped with a drain connection. The chilled solution
temperature sensors are located on the solution outlet and the return
solution end of the evaporator.
A liquid line solenoid valve, filter drier, sight glass, thermostatic expansion
valve, and service valves (liquid and discharge) are provided on each circuit.
Standard controls for these units is a microelectronics control system that
consists of a network of modules referred to as Unit Control Modules (UCM).
The acronym UCM is used extensively throughout this document when
referring to the control system network.
These modules through Proportional/Integral control algorithms perform
specific unit functions that governs unit operation in response to chilled
water temperature leaving the evaporator. The stages of capacity control for
these units is achieved by starting and stopping the compressors.
They are mounted in the control panel and are factory wired to their
respective internal components. They receive and interpret information from
other unit modules, sensors, remote panels, and customer binary contacts to
satisfy the applicable request for cooling. Refer to the following discussion
for an explanation of each module function.
Human Interface Module (HI - Standard)
The Human Interface module enables the operator to adjust the operating
parameters for the unit using it's 16 key keypad. The 2 line, 40 character
LCD screen provides status information for the various unit functions as well
as menus for the operator to set or modify the operating parameters.
Cold Generator Module (CGM - Standard)
The Cold Generator Module (CGM) responds to cooling requests by
energizing the proper unit components based on information received from
other unit modules, sensors, remote panels, and customer supplied binary
inputs. It initiates unit operation based on that information.
Compressor Module (SCM & MCM - Size Specific)
The Compressor module, (Single Circuit & Multiple Circuit), upon receiving a
request for mechanical cooling, energizes the appropriate compressors and
condenser fans. It monitors the compressor operation through feedback
information it receives from various protection devices.
Trane Communications Interface Module (TCI)
(Used with Trane ICS™ Systems)
The Trane Communication Interface module allows external setpoints for
most of the unit functions to be communicated to the unit's UCM network via
a Trane ICS™ system or a Tracer Summit™ system. DIP Switch settings on
the TCI module for these applications should be; Switches 1, 2, and 3 are
“Off”.

CSRA-SVX02A-EN 9
General
Information
Generic Building Automation System Module (GBAS)
(Used with Non-Trane Building Control System)
The Generic Building Automation System (GBAS) module allows a non-
Trane building control system to communicate with the unit and accepts
external setpoints in form of analog inputs 0 - 5 DCV and a binary Input for
demand limit. Five (5) binary outputs are available on 0 - 5 DCV modules.
Refer to the “Field Installed Control Wiring” section for the control wiring to
the GBAS module and the various desired setpoints with the corresponding
DC voltage inputs.
Current Sensing Module (CSM)
Current transformers located around two (2) of the main power leads for
each compressor monitors the running current during compressor operation.
The information is sent to the CGM and can be accessed through the
“Compressor Status” submenu displayed at the Human Interface Module.
Input Devices & System Functions
The descriptions of the following basic Input Devices used within the UCM
network are to acquaint the operator with their function as they interface with
the various modules. Refer to the unit's electrical schematic for the specific
module connections.
Lead/Lag (Standard)
When Lead-Lag is enabled, for each capacity add request, the CGM will
begin sequencing the compressors “On” that have:
A. the least number of starts; or,
B. the least run time (if number of starts are equal)
At each capacity subtract request, the CGM will begin sequencing the
compressors “Off” that have:
A. the most run time; or,
B. the least number of starts (if more than one compressor has the same run
time)
If a compressor is locked out for any reason when a capacity add request
occurs, the next available compressor which meets the specified criteria will
be started.
If a compressor can not be turned “Off” due to the minimum “On Time”, the
next compressor which meets the specified criteria will be turned “Off”.
On dual circuit units, as the first two capacity add requests are initiated, one
compressor on each circuit will start before any additional compressors on
any circuit is started. When staging down from three compressor stages to
two compressor stages, the CGM will turn the compressors “Off” on the
circuit that has the most compressors operating.

10 CSRA-SVX02A-EN
General
Information
With Lead/Lag enabled, HGBP operation (if applicable) will be bypassed and
the system will go directly into pump down when the last subtract command
is initiated.
When the UCM is powered up (after a power loss), or any time the
compressor's start time and run time are equal, the lead compressor for
single circuit units (20 through 30 Tons), will be the first “On” and the lag
compressor will be the first “Off”. For dual circuit units (40 through 60 Tons),
the “On” sequence will be A-C-B-D and the “Off” sequence will be D-B-C-A.
Loss of Flow (Refrigerant) Control
Is accomplished using a binary input device (LPC) located on the suction
lines near the scroll compressors.
The LP cutouts are designed to open if the suction pressure approaches 7 ±
4 psig. If the LP cutout opens after a compressor has started, all
compressors operating on that circuit will be turned off immediately and will
remain off for a minimum of three minutes.
The LPC contacts are designed to close when the suction pressure exceeds
22 ± 4 psig. If the LP control is open when a compressor is requested to
start, none of the compressors on that circuit will be allowed to operate.
They are locked out and a manual reset diagnostic is initiated.
If the LP cutout trips four consecutive times during the first three minutes of
operation, the compressors on that circuit will be locked out and a manual
reset diagnostic is initiated.
Saturated Condenser Temperature Sensors (Standard)
Are analog input devices mounted inside a temperature well located on a
condenser tube bend. They monitor the saturated refrigerant temperature
inside the condenser coil and are connected to the compressor module
(SCM/MCM). As the saturated refrigerant temperature varies due to
operating conditions, the condenser fans are cycled “On” or “Off” as required
to maintain acceptable operating pressures.
Head Pressure Control (Standard)
Is accomplished using two saturated refrigerant temperature sensors.
During a request for compressor operation, when the condensing
temperature rises above the “lower limit” of the controlband, the Compressor
Module (SCM/MCM) begins sequencing condenser fans “On”. If the
operating fans can not bring the condensing temperature to within the
controlband, more fans are turned “On”. As the saturated condensing
temperature approaches the lower limit of the controlband, fans are
sequenced “Off”. The minimum “On/Off” time for condenser fan staging is
5.2 seconds. If the system is operating at a given fan stage below 100% for
30 minutes and the saturated condensing temperature is above the
“efficiency check point” setting, a fan stage will be added. If the saturated
condensing temperature falls below the “efficiency check point” setting, the
fan control will remain at the present operating stage. If a fan stage cycles

CSRA-SVX02A-EN 11
General
Information
four times within a 10 minute period, the control switches from controlling to
the “lower limit” to a temperature equal to the “lower limit” minus the
“temporary low limit suppression” setting. It will utilize this new “low limit”
temperature for one hour to reduce condenser fan short cycling.
High Pressure Controls (Standard)
High Pressure controls are located on the discharge lines near the scroll
compressors. They are designed to open when the discharge pressure
approaches 405 ± 7 psig. The controls reset automatically when the
discharge pressure decreases to approximately 300 ± 20 psig. However, the
compressors on that circuit are locked out and a manual reset diagnostic is
initiated.
Low Ambient Control
The low ambient modulating output on the compressor module is functional
on all units with or without the low ambient option.
When the compressor module has staged up to it's highest stage (stage 2 or
3 depending on unit size), the modulating output will be at 100% (10 VDC).
When the control is at stage 1, the output (0 to 10 VDC) will modulate based
on the saturated condensing temperature.
When the low ambient damper option is installed, the dampers will modulate
according to the output to control the saturated condensing temperature to
within the programmable “condensing temperature low ambient control
point”.
Status/Alarm Output (Standard)
Is an internal function within the CGM control module that provides;
A. diagnostic signals to the Human Interface Alarm LED.
B. control of the binary Alarm output.
C. control of the binary outputs on the GBAS module to inform the customer
of the operational status and/or diagnostic conditions.
Compressor Circuit Breakers (Standard)
The Scroll Compressors are protected by circuit breakers which interrupt the
power supply to the compressors if the current exceeds the breakers “must
trip” value and opens a set of auxiliary contacts in the control circuit.
When the Compressor Module (SCM or MCM) detects the open auxiliary
compressor contacts, it turns any operating compressor(s) on that circuit
“Off”, locks out all compressor operation for that circuit, and initiates a
manual reset diagnostic.

12 CSRA-SVX02A-EN
General
Information
Compressor Motor Winding Thermostats (Standard)
A thermostat is embedded in the motor windings of each Scroll compressor.
Each thermostat is designed to open if the motor windings exceeds
approximately 221°F. The thermostat will reset automatically when the
winding temperature decreases to approximately 181°F. Rapid cycling, loss
of charge, abnormally high suction temperatures, or the compressor running
backwards could cause the thermostat to open. During a request for
compressor operation, if the Compressor Module detects a problem outside
of it's normal parameters, it turns any operating compressor(s) on that circuit
“Off”, locks out all compressor operation for that circuit, and initiates a
manual reset diagnostic.
Low Ambient Compressor Lockout (Standard)
When low ambient compressor lockout is enabled, the compressors are not
allowed to operate if the temperature of the outside air falls below the
lockout setpoint. Compressor operation is enabled when the temperature
rises 5°F above the lockout setpoint. The setpoints and enable/disable
option is programmable at the Human Interface inside the unit control panel.
The default setting is 30°F.
Note: The unit is wired so the CGM monitors incoming power for proper
phase sequencing. Observe proper polarity of internal wiring during service
procedures.
Short Cycle Protection (Standard)
If compressor operation is interrupted by a loss of power or by a manual
reset diagnostic, a minimum of one minute must elapse before the affected
compressor(s) will be allowed to restart for “Process” applications. A
minimum of three minutes must elapse before the affected compressor(s)
will be allowed to restart for “Comfort Cooling” applications.
Hot Start (Load Limit) Control (Standard)
Each time the system is started and the control of the CGM transitions from
“Loop Stabilization” to either “Process” or “Comfort Cooling”, if the Leaving
Solution Temperature (LST) is higher than the programmable Hot Start Load
Limit Setpoint (HSLLS), the lag compressor on each circuit will be prevented
from operating until the leaving solution temperature is lowered by 5°F below
the HSLLS.
If the Hot Start Limit time interval elapses before the LST is 5°F below the
HSLLS, the control will transition immediately into the Hot Operation mode.
Hot Operation mode is programmable to:
1. Do not limit capacity, initiate an informational diagnostic until the LST falls
5°F below the HSLLS.
2. Limit the capacity to 50 percent (one compressor per circuit), initiate an
auto reset diagnostic until the LST falls 5°F below the HSLLS.

CSRA-SVX02A-EN 13
General
Information
3. Turn “Off” and lockout all of the compressors and initiate a manual reset
diagnostic.
Loss-of-Flow (Solution) Protection (Standard)
The factory installed solution flow switch is wired to the CGM. If it opens for
more than 6 continuous seconds when the pump is requested to be “On”, an
auto reset diagnostic will be initiated. If no compressors are operating, they
will be inhibited from starting. Any time the compressors are operating, they
will be turned “Off”. Once flow has been reestablished, full unit operation will
be allowed.
In addition, a low pressure cutout and the entering (EST) and leaving
solution temperature (LST) sensors provide loss of flow protection for the
unit.
When there is a cooling demand, the CGM compares the EST to the LST. If
the EST is 2°F or more below the LST, the chiller is stopped and a manually
reset diagnostic is initiated. This input has priority over all other commands
received by the CGM.
Low Ambient Start (Standard)
Is accomplished by utilizing an additional low pressure cutout (LPC) that is
ignored at start-up for varying periods of time, depending on the prevailing
ambient temperature. The relationship between this variable time period and
the ambient temperature is linear from a maximum of 5 minutes at 0°F to a
minimum of 30 seconds at 65°F. The bypass time is initiated each time a
compressor is started on a refrigerant circuit when no other compressor on
that circuit is operating. No additional compressors will be allowed to operate
within that circuit until the bypass time has expired.
Chiller Solution Pump Output Relay (Standard)
A Solution Pump binary output (Form C) relay is located on the CGM which
may be used to control the chiller solution pump.
If the Chiller Solution Pump Mode, at the Human Interface Module, is set to
“On”, the Solution Pump will run continuously.
If the Chiller Solution Pump Mode, at the Human Interface Module, is set to
Auto, the Solution Pump will be turned “Off”:
1. when the unit is stopped (Unit Stop or External Auto/Stop)
2. during the unit's Power On Delay Time
3. when the primary control states are:
Ice Rebuild Delay
Ice Building Complete
A Solution Pump “Off Delay” Time may be programmed to allow the Solution
Pump to remain “On” after a shut down request has been received. The
delay is adjustable between 0.5 minutes and 10 minutes after an “Off” state
is initiated. The Solution Pump will always run for this delay time when

14 CSRA-SVX02A-EN
General
Information
turning off except during an Emergency Stop condition. If an Emergency
Stop is initiated, the Solution Pump is immediately turned “Off” (relay de-
energized).
Low Ambient Pump Control (Standard)
A Low Ambient Pump “On” Control function (LAPC) allows the pump to run
continuously if the outside ambient temperature falls below a programmable
Low Ambient Pump “On” Temperature (LAPT) Setpoint or if an outside
ambient temperature input failure occurs. An Auto Reset Diagnostic will be
issued and remain as long as the condition exists.
This function will be disabled when an Emergency Stop request is initiated.
During service test operation, if a low ambient condition exists when the
operator attempts to turn the pump “Off”, a message will be displayed on the
Human Interface Module advising that the pump cannot be turned off due to
the low ambient condition.
Emergency Stop (Optional)
Is accomplished when a customer provided, field installed binary input
device is connected to the CGM. The unit will immediately shut down when
the contacts are opened. Emergency Stop is a top priority command that will
override all other commands received by the UCM. A manual reset
diagnostic will occur and an indication showing that the unit is shut down due
to Emergency Stop will be displayed at the Human Interface Module.
External Auto/Stop (Optional)
The unit can be Stopped and Started by a remote customer provided field
installed binary input device (such as a time clock) connected to the CGM.
When the input is opened (Stop), the unit will stage the compressors and the
solution pump “Off” in a normal manner and display “Off due to external
stop” at the unit Human Interface. When the input is closed (Start), the unit
will start and run normally.
The External Auto/Stop input operates in the same manner as the STOP/
AUTO keys on the unit mounted Human Interface or the Remote Human
Interface (RHI). However, the Stop key at the unit mounted Human Interface
has priority over both the remote External Auto/Stop and the Remote Human
Interface Auto/Stop.
Note: If the STOP key is pressed at the unit mounted Human Interface, no
remote AUTO (Start) key will start the unit until the AUTO key is pressed at
the unit mounted Human Interface.
A start (AUTO) command is allowed only if no overriding diagnostics or
higher priority function is present.

CSRA-SVX02A-EN 15
General
Information
Figure 2 — Unit Component “Layout” and “Ship with” Locations (60
Ton Unit Illustrated)
Unit Inspection
As soon as the unit arrives at the job site
[ ] Verify that the nameplate data matches the data on the sales order and bill
of lading (including electrical data).
[ ] Verify that the power supply complies with the unit nameplate
specifications.
[ ] Visually inspect the exterior of the unit, including the roof, for signs of
shipping damage.
[ ] Check for material shortages. Refer to Figure 2, “Component Layout and
Ship with Location”.
If the job site inspection of the unit reveals damage or material shortages,file
a claim with the carrier immediately. Specify the type and extent of the
damage on the “bill of lading” before signing.
[ ] Visually inspect the internal components for shipping damage as soon as
possible after delivery and before it is stored. Do not walk on the sheet metal
base pans.
Typical Lifting Holes (4)
Control Panel
Condenser Fans
PumpCircuitBreaker/Control
Panel Enclosure
Tow Bar
Water Inlet Water Outlet
Forklift
Tube
Slots

16 CSRA-SVX02A-EN
Installation
WARNING
No Step Surface!
Do not walk on the sheet metal drain pan. Walking on the drain pan
could cause the supporting metal to collapse. Failure of the drain pan
could result in death or serious injury.
Bridging between the unit's main supports may consist of multiple 2 by 12
boards or sheet metal grating.
[ ] If concealed damage is discovered, notify the carrier's terminal of damage
immediately by phone and by mail. Concealed damage must be reported
within 15 days.
Request an immediate joint inspection of the damage by the carrier and the
consignee. Do not remove damaged material from the receiving location.
Take photos of the damage, if possible. The owner must provide reasonable
evidence that the damage did not occur after delivery.
[ ] Notify the appropriate Trane office before installing or repairing a
damaged unit.
Unit Clearances
Figure 3 illustrates the minimum operating and service clearances for either
a single, multiple, or pit application. These clearances are the minimum
distances necessary to assure adequate serviceability, cataloged unit
capacity, and peak operating efficiency.
Providing less than the recommended clearances may result in condenser
coil starvation or recirculation of hot condenser air.
Locate the unit as close to the applicable system support equipment as
possible to minimize refrigerant piping lengths.
Unit Dimensions & Weight Information
•Overall unit dimensional data for each unit is illustrated in Figure 4.
•A Center-of-Gravity illustration and the dimensional data is shown in
Figure 5.
•Table 1 lists the typical unit operating and point loading weights.
Foundation
If the unit is installed at ground level, elevate it above the snow line. Provide
concrete footings at each support location or a slab foundation for support.
Refer to Table 1 for the unit operating and point loading weights when
constructing the footing foundation.
For rooftop applications, ensure the roof is strong enough to support the
unit. Refer to Table 1 for the unit operating weights.

CSRA-SVX02A-EN 17
Installation
Anchor the unit to the roof with hold-down bolts or isolators. Follow the
instructions under “Unit Isolation” for proper isolator placement and
installation.
Check with a roofing contractor for proper waterproofing procedures.
Figure 3 — Typical Installation Clearances for Single, Multiple or Pit
Applications

18 CSRA-SVX02A-EN
Installation
Figure 4a — C25 Ton Unit Dimensional Data & Recommended
Clearances

CSRA-SVX02A-EN 19
Installation
Figure 4b — C40 Ton Unit Dimensional Data & Recommended
Clearances

20 CSRA-SVX02A-EN
Installation
Figure 4c — C60 Ton Unit Dimensional Data & Recommended
Clearances