Trane SCIH Owner's manual

October 2008 SXIH-SVX01C-EN
Installation
Operation
Maintenance
Integral Air-Cooled
Self-Contained Unit
Model SCIH/SCIJ
A0 and later design sequence

© 2008 Trane All rights reserved SXIH-SVX01C-EN
Warnings, Cautions and Notices
Warnings, Cautions and Notices. Note that warnings, cautions and notices appear at
appropriate intervals throughout this manual. Warnings are provide to alert installing contractors
to potential hazards that could result in personal injury or death. Cautions are designed to alert
personnel to hazardous situations that could result in personal injury, while notices indicate a
situation that may result in equipment or property-damage-only accidents.
Your personal safety and the proper operation of this machine depend upon the strict observance
of these precautions.
Important
Environmental Concerns!
Scientific research has shown that certain man-made chemicals can affect the earth's naturally
occurring stratospheric ozone layer when released to the atmosphere. In particular, several of the
identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine, Fluorine
and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all
refrigerants containing these compounds have the same potential impact to the environment.
Trane advocates the responsible handling of all refrigerants-including industry replacements for
CFCs such as HCFCs and HFCs.
Responsible Refrigerant Practices!
Trane believes that responsible refrigerant practices are important to the environment, our
customers, and the air conditioning industry. All technicians who handle refrigerants must be
certified. The Federal Clean Air Act (Section 608) sets forth the requirements for handling,
reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these
service procedures. In addition, some states or municipalities may have additional requirements
that must also be adhered to for responsible management of refrigerants. Know the applicable
laws and follow them.
WARNING
Refrigerant warning information!
Include the low or medium/high pressure warning as required for the equipment. If the refrigerant
is medium pressure, add the hazard of explosion warning.
WARNING
Grounding Required!
Follow proper local and state electrical code on requirements for grounding. Failure to follow code
could result in death or serious injury.
ATTENTION: Warnings, Cautions and Notices appear at appropriate sections throughout
this literature. 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 could also be used to alert against unsafe practices.
NOTICE:Indicates a situation that may result in equipment or property-damage only
accidents.

SXIH-SVX01C-EN 3
Warnings, Cautions and Notices
Unit Nameplate
The unit nameplate identifies the unit model number, appropriate service literature, and wiring
diagram numbers. It is mounted on the control panel door. Reference this information when
making inquires or ordering parts or literature.
Literature Change History
Use this manual for Integral Air-Cooled units, model SCIH/SCIJ.
SXIH-SVX01C-EN (October 2008)
Reissue of this manual to convert Celsius to Fahrenheit in Tabl e 9 and Ta b l e 10 .
SXIH-SVX01C-EN (June 2008)
Reissue of this manual to include SCIJ models.
SXIH-SVX01B-EN (September 2007)
Re-issue of manual which includes the addition of the accessory model number and instructions
on how to convert the unit to a horizontal discharge with correct belt sizes. Also, it provides specific
installation, operation, and maintenance instructions for A0 and later design sequences.
Note: The procedures discussed in this manual should only be performed by qualified,
experienced HVAC technicians.
Note: This document is customer property and must be retained by the unit's owner for use by
maintenance personnel.
Overview of Manual
This booklet describes proper installation, start-up, operation, and maintenance procedures for the
Integral Air-Cooled unit, model SCIH/SCIJ. Carefully review the information within this manual and
follow the instructions to minimize the risk of improper operation and/or component damage.
Note: One copy of the appropriate service literature ships inside the control panel of each unit.
It is important that you perform periodic maintenance to help ensure trouble free operation. Should
equipment failure occur, contact a qualified Trane service organization for an experienced HVAC
technician to properly diagnose and repair this equipment.
Note: Do not release refrigerant to the atmosphere!
If adding or removing refrigerant is required, the service technician must comply with all federal,
state, and local laws.

4SXIH-SVX01C-EN
Table of Contents
Literature Change History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Overview of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Integral Air-Cooled Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . 6
Accessory Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Commonly Used Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Refrigeration Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Evaporator Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Field Installed Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pre-Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Receiving and Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Acoustic Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Installation Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 1. SCIJ050 (5-ton unit) & SCIH075 (7.5-ton unit) . . . . . . . . . . . . . . . . . 11
Table 1. SCIH/SCIJ Unit Dimensions & Weights, in-lbs. . . . . . . . . . . . . . . . . 11
Figure 2. Model SCIH10 & 15-ton units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 3. SCIH/SCIJ Component Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 4. SCIH/SCIJ Accessories Plenum . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 2. SCIH/SCIJ Plenum Dimensions & Weight, in-lbs.. . . . . . . . . . . . . . . 14
Figure 5. Low Ambient Damper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 3. SCIH/SCIJ Low Ambient Damper Dimensions & Weight, in-lbs.. . . . 14
Figure 6. Hot Water Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 4. SCIH/SCIJ Hot Water Coil Dimensions & Weight, in-lbs. . . . . . . . . . 15
Figure 7. Steam Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 5. SCIH/SCIJ Steam Coil Dimensions & Weights, in-lbs. . . . . . . . . . . . 15
Mechanical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Voltage Imbalance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 6. Integral Air-Cooled Standard Motor Electrical Data . . . . . . . . . . . . . 18
Table 7. Integral Air-Cooled Oversized Motor Electrical Data. . . . . . . . . . . . . 19
Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Fan Discharge Conversion Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 8. Belt sizes for fan discharge conversion . . . . . . . . . . . . . . . . . . . . . . 20
Figure 8. Converting fan to horizontal discharge . . . . . . . . . . . . . . . . . . . . . . 20
Low Ambient Damper Installation (SCIH only) . . . . . . . . . . . . . . . . . . . . . 21
Figure 9. Low Ambient Damper Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Hydronic Coil Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 10. Hydronic coil installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Plenum Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 11. Plenum installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

SXIH-SVX01C-EN 5
Pre-Startup Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Unit Startup Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 9. Normal Operating Conditions (SCIH / SCIJ) . . . . . . . . . . . . . . . . . . . 26
Table 10. Controls Adjustment (SCIH / SCIJ) . . . . . . . . . . . . . . . . . . . . . . . . . 26
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 11. Integral Air-Cooled General Data. . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Cleaning the Condenser Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Periodic Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table of Contents

6SXIH-SVX01C-EN
Integral Air-Cooled
Model Number
Description
Digit 1 - Unit Model
S = self contained
Digit 2 - Unit Type
C = commercial
Digit 3 - Condenser Medium
I = integral air-cooled
Digit 4 - Development Sequence
H = development series (except SCIJ050)
J = development series (SCIJ050 only)
Digit 5, 6, 7- Unit Nominal
Capacity
050 = 5 tons
075 = 7.5 tons
100 = 10 tons
150 = 15 tons
Digit 8 - Unit Voltage
3 = 208 - 230 volt/60 hz/3 ph
4 = 460 volt/60 hz/3 ph
5 = 575 volt/60 hz/3 ph
Digit 9 - Air Flow Configuration
1 = horizontal discharge/rear return
2 = vertical discharge/front return
3 = vertical discharge/rear return
Digit 10, 11 - Design Sequence
A0= design sequence
Digit 12 - Air Filter Type
1 = one-inch fiberglass throwaway
Digit 13 - Control
0 = control interface
Digit 14 - Unit Finish
1=painted
2 = coated finish only
Digit 15 - Coil Finish
0 = none
C = condenser coated
E = evaporator coated
H = condenser + evaporator coated
Accessory Model
Number Description
Digit 1 - Parts/Accessories
P = parts/accessories
Digit 2 - Unit Model
V = vertical self contained
Digit 3 - Condenser Medium
I = integral air-cooled
Digit 4 - Development Sequence
H = development series (except SCIJ050)
J = development series (SCIJ050 only)
Digit 5 - Thermostat
0 = none
A = 10/15 ton t-stat 2C w/auto base
D = 10/15 ton prg. t-stat 2H2C w/2H2C
base
E = 10/14 ton t-stat 2H2C w/auto base
F = 10/15 ton t-stat 2H2C w/auto/mnl
base
G = 10/15 ton t-stat 2H2C w/mnl base
H = 5/7.5 tonprg t-stat 2H2C w/mnl base
J = 5/7.5 ton t-stat 1H1C base
K = 5/7.5 ton t-stat 1H1C w/auto/mnl base
L = 5/7.5 ton t-stat 1H1C w/mnl base
Digit 6 - Remote Wall Sensor
0 = none
A = remote wall sensor
Digit 7 - Heat Coil
0 = none
1 = 5-ton hot water coil
2 = 7.5-ton hot water coil
3 = 10/15-ton hot water coil
4 = 5-ton steam coil
5 = 7.5-ton steam coil
6 = 10/15-ton steam coil
Digit 8 - Discharge Plenum
0 = none
1 = 5-ton plenum
2 = 7.5-ton plenum
3 = 10-ton plenum
4 = 15-ton plenum
Digit 9 - Low Ambient Damper
0 = none
1 = 5/7.5-ton low ambient damper
2 = 10/15-ton low ambient damper
Digit 10 - Design Sequence
**= factory assigned
Digit 11 - Oversize Motor
Condenser
0 =none
A = 5-ton, 208V condenser, OS motor kit
B = 7.5-ton, 208V condenser, OS motor
C = 10-ton, 208V condenser, OS motor
D = 15-ton, 208V condenser, OS motor
E = 5-ton, 460V condenser, OS motor
F = 7.5-ton, 460V condenser, OS motor
G = 10-ton, 460V condenser, OS motor
H = 15-ton, 460V condenser, OS motor
J = 5-ton, 575V condenser, OS motor
K = 7.5-ton, 575V condenser, OS motor
L = 10-ton, 575V condenser, OS motor
M = 15-ton, 575V condenser, OS motor
Digit 12 - Oversize Motor
Evaporator
0 = none
A = 5-ton, 208V evaporator, OS motor
B = 7.5-ton, 208V evaporator, OS motor
C = 10-ton, 208V evaporator, OS motor
D = 15-ton, 208V evaporator, OS motor
E = 5-ton, 460V evaporator, OS motor
F = 7.5-ton, 460V evaporator, OS motor
G = 10-ton, 460V evaporator, OS motor
H = 15-ton, 460V evaporator, OS motor
J = 5-ton, 575V evaporator, OS motor
K = 7.5-ton, 575V evaporator, OS motor
L = 10-ton, 575V evaporator, OS motor
M = 15-ton, 575V evaporator, OS motor
Digit 13 - Filter
0 = none
1 = 5-ton 1" fiberglass TA, 6PC
2 = 5-ton 2" fiberglass TA, 6PC
3 = 5-ton 2" mesh filter washable, 6PC
4 = 7.5-ton 1" fiberglass TA, 6PC
5 = 7.5-ton 2" fiberglass TA, 6PC
6 = 7.5-ton 2" mesh filter washable, 6PC
7 = 10/15-ton 1" fiberglass TA, 6PC
8 = 10/15-ton 2" fiberglass TA, 6PC
9 = 10/15-ton 2" mesh filter washable,
6PC
Digit 14 - Filter Rack Kit
0 = none
A = 5-ton filter rack kit
B = 7.5-ton filter rack kit
C = 10-ton filter rack kit
D = 15-ton filter rack kit
Model Number Description

SXIH-SVX01C-EN 7
General Information
The integral air-cooled unit, model SCIH/SCIJ, is a high efficiency, vertical air cooled air conditioner.
Units have either front or top discharge configuration options and easy service access. Unit
construction is heavy gage steel with a baked enamel finish. Available unit voltages are 208/3/60,
230/3/60, and 460/3/60, 575/3/60.
Commonly Used Acronyms
For convenience, a number of acronyms and abbreviations are used throughout this manual. These
acronyms are alphabetically listed and defined below.
cfm = cubic-feet-per-minute
CKT = circuit
CV = constant volume
CW = clockwise
CCW = counterclockwise
E/A = exhaust air
F/A = fresh air
IOM= installation/operation/maintenance manual
LH = left-hand
O/A = outside air
psig = pounds-per-square-inch, gauge pressure
R/A = return air
RH = right-hand
RPM = revolutions-per-minute
S/A = supply air
SZ = single-zone (unit airflow)
VAV = variable air volume
Note: Cross-reference to related publication: Internal Air-Cooled Self-Contained Product Catalog:
PKG-PRC009-EN.
Refrigeration Circuits
Units are configured in single or double refrigeration circuits. Each circuit consists of a:
• high efficiency scroll compressor mounted on rubber isolation grommets
• condenser and evaporator coils, designed for optimum performance and efficiency with lanced
fins and rifled tubing
• filter-drier
Evaporator Section
The evaporator fan section consists of one or two forward curved centrifugal fans powered by a
premium efficiency motor through an adjustable motor sheave, and fixed diameter blower pulley.
The condenser fan section consists of one or two forward curved centrifugal fans powered by a
premium efficiency motor through an adjustable motor sheave and fixed diameter blower pulley.
Condenser motor belt tension is adjusted by an adjustable motor mounting base. Control box
access is from the front of the unit to ease electrical hook-up.

8SXIH-SVX01C-EN
General Information
Controls
The standard control panel consists of a high voltage terminal block, overload relays for each fan
motor, transformer, 3-pole 24 volt contactors for each motor and compressor, and a 5-second delay
timer. Remote thermostat controls are field-installed.
Field Installed Accessories
These items ship separately for field installation:
•steam coil
•hot water coil
•plenum
•low ambient damper
•oversized motors
•remote thermostat
Note: Application of the above options and/or accessories may require field adjustment of fan
speeds to ensure proper airflow and performance.

SXIH-SVX01C-EN 9
Installation
Pre-Installation Considerations
Checklist
The following checklist gives an overview of the recommended pre-installation considerations.
Follow the procedures in this section to ensure installation is complete and adequate for proper
unit operation. Verify this checklist is complete before beginning unit installation.
– Verify the unit size and tagging with the unit nameplate to ensure the correct unit is received.
– Inspect the unit for possible shipping damage and make any necessary claims with the
freight delivery company immediately.
– Before installing the unit, remember to allow minimum recommended clearances for
routine maintenance and service. Refer to unit dimensions and clearances on submittals or
in the “Dimensions and Weights,” p. 11section.
– Verify the unit is configured properly prior to beginning unit installation.
– Make proper acoustic considerations before installing unit. Do not install unit near sound-
sensitive locations.
– Allow adequate space for service and operating clearances. Reference “Service Access,”
p. 10 section on this page.
– Make provisions for correct supply power and note electrical connection knockouts
locations on the unit submittals or in the “Dimensions and Weights,” p. 11section.
– Ensure the unit installation location is level.
Receiving and Handling
Shipping Package
Integral air-cooled units ship assembled on skids. Units ship in the unitary configuration,
assembled, piped, and charged with refrigerant.
Receiving Checklist
Complete the following checklist immediately after receiving unit shipment to detect possible
shipping damage.
– Verify that the unit nameplate data corresponds to the sales order and bill of lading
(including electrical data).
– Visually inspect the unit exterior for physical signs of shipping damage or material
shortages.
– If a unit appears damaged, inspect it immediately before accepting the shipment. Remove
access panels and check for interior component damage. Make specific notations
concerning the damage on the freight bill. Do not refuse delivery.
– Report concealed damage to the freight line within the allotted time after delivery. Verify with
the carrier their allotted time to submit a claim.
Note: Failure to follow these procedures may result in no reimbursement for damages from the
freight company.
– Do not move damaged material from the receiving location. It is the receiver's responsibility
to provide reasonable evidence that concealed damage did not occur after delivery.
– Do not continue unpacking the shipment if it appears damaged. Retain all packaging. Take
photos of damaged material if possible.
– Notify the carrier's terminal of the damage immediately by phone and mail. Request an
immediate joint inspection of the damage by the carrier and consignee.

10 SXIH-SVX01C-EN
Installation
– Notify your Trane representative of the damage and arrange for repair. Have the carrier
inspect the damage before making any repairs to the unit.
Unit Storage
Take precautions to prevent condensate from forming inside the unit's electrical compartments
and motors if the unit is stored before it is installed.
Service Access
Maintain adequate clearances around and above the unit to ensure proper unit operation and allow
sufficient service access. Trane recommends 36-inches service access on all sides of the unit.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to
disconnect power before servicing could result in death or serious injury.
Acoustic Considerations
Before determining the final unit installation site, remember that proper unit placement is critical
in reducing transmitting sound levels to the building. The ideal time to make provisions to reduce
sound transmissions is during the design phase. The most economical means of avoiding a
potential acoustical problem is to place units in areas that are not acoustically sensitive.
Unit Location
Install the unit in a dry, indoor area between 50 and 115°F. Choose a location where sound levels,
airflow and vibration, commonly associated with heavy-duty commercial equipment, will not be
objectionable to occupants. In multiple unit installations, separate the individual units and stagger
their location from floor to floor so as not to starve units for air and not to discharge warm
condenser air from one condenser into the intake of another condenser. Place thermostats, air
supplies and returns so that the individual unit will operate within its zone.
Installation Preparation
Before installing the unit, perform the following procedures to ensure proper unit operation.
1. Verify the installation location is level. To ensure proper unit operation, install the unit level
(zero tolerance) in both horizontal axes. Failure to level the unit properly can result in
condensate management problems, such as standing water inside the unit. Standing water and
wet surfaces inside units can result in microbial growth (mold) in the drain pan that may cause
unpleasant odors and serious health-related indoor air quality problem.
2. Allow adequate service and code clearances as recommended in the “Service Access,” p. 10
section.
3. Position the unit in its final location.
Unit Placement
Install the unit on a firm, level surface.
Installing Optional Accessories
Before installing ductwork, install accessories on unit.