Trane TC*150-301 Owner's manual

December 2008 RT-SVX25C-EN
Installation
Operation
Maintenance
Packaged Electric/Electric
12 ½ - 25 Ton
Model Number
TC*150-301

Warnings, Cautions and Notices
© 2008 Trane All rights reserved RT-SVX25C-EN
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
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 may also be used to alert against unsafe practices.
NOTICE:Indicates a situation that may result in equipment or property-damage only
accidents.

Table of Contents
RT-SVX25C-EN 3
Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Overview of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
System Input Devices & Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Unit Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Unit Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 1. Typical unit weights and point loading data lbs. . . . . . . . . . . . . . . . 18
Table 2. Typical unit weights and point loading data kg.. . . . . . . . . . . . . . . . 18
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Main Unit Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Main Unit Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 3. Electromechanical thermostat 24V AC conductors with Reliatel. . . . 26
Table 4. Zone sensor module wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Smoke Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Space Temperature Averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 5. Temperature vs. resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Voltage Imbalance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Electrical Phasing
(Three Phase Motors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Compressor Crankcase Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
ReliaTel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Pre Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Test Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 6. Service test guide for component operation . . . . . . . . . . . . . . . . . . 37
Verifying Proper Air Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 7. Compressor types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 8. POE Oil recharge amount (fl. oz.) . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Dehumidification Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Heating Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Final System Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Fan Belt Adjustment - Belt Drive Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4RT-SVX25C-EN
Table 9. Belt tension measurement and deflection reanges . . . . . . . . . . . . . 43
Monthly Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Final Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Table 10. Sample maintenance log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
System Status Checkout Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Method 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Table 11. Temps and resistance values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Table 12. System mode and fan selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table 13. Wiring diagrams for R-22 units and heaters. . . . . . . . . . . . . . . . . . . 55
Table 14. Wiring diagrams for R-410A units . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Central Air Conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
TCY, TCX, TCC, TCD, TCH, TCK, TCM, TCP, THC and TSC (Parts Only) . . . 60
Standard Equipment Warranty Terms and Conditions Commercial Equip-
ment Warranty and Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

RT-SVX25C-EN 5
Model Number Description
TC D 150 C 3 00 A A
123456789101112
Digits 1, 2 - Product Type Digit 8 - Electrical characteristics
TC = Packaged cooling, electric heat 3 = 208-230/60/3
TF = With factory installed options 4 = 460/60/3
D = 400/50/3
Digit 3 - Airflow Configuration T = 380/60/3
D = Downflow W = 575/60/3
H = Horizontal
Digit 9, 10 - Factory installed options
Digit 4, 5, 6 - Nominal gross cooling capacity (MBh) 00 = No factory installed options
150 = 12 1/2 tons standard efficiency 0A = Factory-installed economizer
151 = 12 1/2 tons high efficiency 0B = Oversized motor
180 = 15 tons standard efficiency 0C = Downflow economizer/oversized motor
181 = 15 tons high efficiency 0F = Trane communications interface (TCI)
210 = 17 1/2 tons standard efficiency 0G = Downflow economizer/TCI
211 = 17 1/2 tons high efficiency 0H = Thermal expansion valve
240 = 20 tons standard efficiency 0J = Oversized motor/thermal expansion valve
241 = 20 tons high efficiency 0K = Downflow economizer/oversized motor/thermal expansion valve
300 = 25 tons standard efficiency 0L = Factory-installed economizer/thermal expansion valve
301 = 25 tons high efficiency 0M = Reheat coil
0N = Downflow economizer/reheat coil
Digit 7 - Major development sequence 0P = Oversized motor/reheat coil
0R = Downflow economizer/oversized motor/reheat coil
Digit 11 - Minor design sequence
Digit 12 - Service digit

6RT-SVX25C-EN
General Information
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.
Model Number Description
All 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 below.
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 and serial number printed on the unit nameplate.
WARNING
Contains Refrigerant!
System contains oil and refrigerant under high pressure. Recover refrigerant to relieve pressure
before opening the system. See unit nameplate for refrigerant type. Do not use non-approved
refrigerants, refrigerant substitutes, or refrigerant additives.
Failure to follow proper procedures or the use of non-approved refrigerants, refrigerant
substitutes, or refrigerant additives could result in death or serious injury or equipment damage.
WARNING
Hazardous Voltage w/Capacitors!
Disconnect all electric power, including remote disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power
cannot be inadvertently energized. Verify with an appropriate voltmeter that all capacitors have
discharged. Failure to disconnect power and discharge capacitors before servicing could result in
death or serious injury.
Note: For additional information regarding the safe discharge of capacitors, see PROD-SVB06A-
EN or PROD-SVB06A-FR
WARNING
R410a Refrigerant!
R-410A refrigerant systems operate at higher pressures than standard R-22 systems. Do not use
R-22 service equipment or components on R-410A refrigerant equipment. If service equipment
is not rated for R-410A refrigerant, equipment damage or personal injury may result.

RT-SVX25C-EN 7
General Information
CAUTION
Ultraviolet (UV) Lights!
The manufacturer does not recommend field installation of ultraviolet lights in its equipment for
the intended purpose of improving indoor air quality. High intensity C-band ultraviolet light is
known to severely damage polymer (plastic) materials and poses a personal safety risk to
anyone exposed to the light without proper personal protective equipment. Polymer materials
commonly found in HVAC equipment that may be susceptible include insulation on electrical
wiring, fan belts, thermal insulation, various fasteners and bushings. Degradation of these
materials can result in serious damage to the equipment.
The manufacturer accepts no responsibility for the performance or operation of our equipment
in which ultraviolet devices were installed outside of the manufacturer’s factory or its approved
suppliers.
NOTICE
Roof Damage!
System contains oil and refrigerant under high pressure. Roofs should be protected from
exposure to oils and refrigerant in the system. If rooftop is not protected damage to the roof may
occur.
Unit Nameplate
A Mylar unit nameplate is located on the unit’s corner support next to the control box. It includes
the unit model number, serial number, electrical characteristics, refrigerant charge, as well as other
pertinent unit data.
Compressor Nameplate
The nameplate for the compressors are located on the side of the compressor.
Unit Description
Before shipment, each unit is leak tested, dehydrated, charged with refrigerant and compressor oil,
and run tested for proper control operation.
The condenser coils are aluminum fin, mechanically bonded to copper tubing.
Direct-drive, vertical discharge condenser fans are provided with built-in thermal overload
protection.
The ReliaTel™ Control Module is a microelectronic control system that is referred to as
“Refrigeration Module” (RTRM). The acronym RTRM is used extensively throughout this
document when referring to the control system network.
This module through Proportional/Integral control algorithms perform specific unit functions that
governs unit operation in response to zone temperature, supply air temperature, and/or humidity
conditions depending on the application. The stages of capacity control for these units are achieved
by starting Economizer Control Actuator.
The RTRM is mounted in the control panel and is factory wired to the respective internal
components. The RTRM receives and interprets information from other unit modules, sensors,
remote panels, and customer binary contacts to satisfy the applicable request for cooling.
Economizer Control Actuator ReliaTel™ Control
The ECA monitors the mixed air temperature, return air temperature, minimum position setpoint
(local or remote), power exhaust setpoint, CO2 setpoint, CO2, and ambient dry bulb/enthalpy
sensor or comparative humidity (return air humidity against ambient humidity) sensors, if
selected, to control dampers to an accuracy of +/- 5% of stroke. The actuator is spring returned to

8RT-SVX25C-EN
General Information
the closed position any time that power is lost to the unit. It is capable of delivering up to 25 inch
pounds of torque and is powered by 24 VAC.
RTCI -- ReliaTel™ Trane Communication Interface (Optional)
This module is used when the application calls for an ICSTM building management type control
system. It allows the control and monitoring of the system through an ICS panel.
The module can be ordered from the factory or ordered as a kit to be field installed. Follow the
installation instruction that ships with each kit when field installation is necessary.
RLCI - ReliaTel™ LonTalk Communication Interface (Optional)
This module is used when the application calls for an ICSTM building management type control
system that is LonTalk. It allows the control and monitoring of the system through an ICS panel.
The module can be ordered from the factory or ordered as a kit to be field installed. Follow the
installation instruction that ships with each kit when field installation is necessary.
RTOM – ReliaTel™ Options Module (Optional)
The RTOM monitors the supply fan proving, clogged filter, supply air temperature, exhaust fan
setpoint, supply air tempering, Frostat™ and smoke detector. Refer to system input devices and
functions for operation.
System Input Devices & Functions
The RTRM must have a zone sensor or thermostat input in order to operate the unit. The flexibility
of having several mode capabilities depends upon the type of zone sensor or thermostat selected
to interface with the RTRM.
The descriptions of the following basic Input Devices used within the RTRM 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.
The following controls are available from the factory for field installation.
Supply Fan Failure Input (Optional)
The Fan Failure Switch can be connected to sense indoor fan operation, FFS (Fan Failure Switch).
If air flow through the unit is not proven by the differential pressure switch connected to the RTOM
(factory set point 0.07 “ w.c.) within 40 seconds nominally, the RTRM will shut off all mechanical
operations, lock the system out, send a diagnostic to ICS, and the SERVICE output will flash. The
system will remain locked out until a reset is initiated either manually or through ICS.
Clogged Filter Switch (Optional)
The unit mounted clogged filter switch monitors the pressure differential across the return air
filters. It is mounted in the filter section and is connected to the RTOM. A diagnostic SERVICE signal
is sent to the remote panel if the pressure differential across the filters is at least 0.5" w.c. The
contacts will automatically open when the pressure differential across the filters decreases to
approximately 0.4" w.c. The clogged filter output is energized when the supply fan is operating and
the clogged filter switch has been closed for at least 2 minutes. The system will continue to operate
regardless of the status of the filter switch.
Please note that on units equiped with factory installed MERV 13 filters, a clogged filter switch with
different pressure settings will be installed. This switch will close when the differential pressure
is approximately 0.8' w.c. and open when the differential falls to 0.7" w.c.
Compressor Disable (CPR1/2)
This input incorporates the low pressure control (LPC) of each refrigeration circuit and can be
activated by opening a field supplied contact installed on the LTB.

RT-SVX25C-EN 9
General Information
If this circuit is open before the compressor is started, the compressor will not be allowed to
operate.
Anytime this circuit is opened for 1 continuous second during compressor operation, the
compressor for that circuit is immediately turned “Off”. The compressor will not be allowed to
restart for a minimum of 3 minutes should the contacts close.
If four consecutive open conditions occur during the first three minutes of operation, the
compressor for that circuit will be locked out, a diagnostic communicated to the remote panel (if
installed), and a manual reset will be required to restart the compressor.
Phase Monitor
The Phase Monitor is a 3 phase line monitor module that protects against phase loss, phase
reversal and phase unbalance. It is intended to protect compressors from reverse rotation. It has
an operating input voltage range of 190-600 VAC, and LED indicators for ON and FAULT. There are
no field adjustments and the module will automatically reset from a fault condition.
Low Pressure Control ReliaTel Control
When the LPC is opened for 1 continuous second, the compressor for that circuit is turned off
immediately. The compressor will not be allowed to restart for a minimum of 3 minutes.
If four consecutive open conditions occur during the first three minutes of operation, the
compressor will be locked out, a diagnostic communicated to ICSTM if applicable, and a manual
reset will be required to restart the compressor.
Discharge Line Thermostat ReliaTel Control
The high pressure controls and discharge line thermostats are wired in series between the
compressor outputs on the RTRM and the compressor contactor coils. If the high pressure control
switch or discharge line thermostat open, the RTRM senses a lack of current while calling for
cooling and locks the compressor out. This is an auto reset lockout. If the circuit is open three
consecutive times when the contactor coil should be on, the RTRM sets a manual lockout for that
compressor.
Power Exhaust Control (Optional)
The power exhaust fan is started whenever the position of the economizer dampers meets or
exceed the power exhaust setpoint when the indoor fan is on.
The setpoint panel is located in the return air section and is factory set at 25%.
Lead/Lag Control (Dual Circuit Only)
Lead/Lag is a selectable input located on the RTRM. The RTRM is configured from the factory with
the Lead/Lag control disabled. To activate the Lead/Lag function, simply cut the wire connected to
J3-8 at the RTRM. When it is activated, each time the designated lead compressor is shut off due
to the load being satisfied, the lead compressor or refrigeration circuit switches. When the RTRM
is powered up, i.e. after a power failure, the control will default to the number one circuit
compressor.
Zone Sensor Module (ZSM) (BAYSENS106A)
This electronic sensor features three system switch settings (Heat, Cool, and Off) and two fan
settings (On and Auto). It is a manual changeover control with single setpoint. (Cooling Setpoint
Only)
Zone Sensor Module (ZSM) (BAYSENS108A)
This electronic sensor features four system switch settings (Heat, Cool, Auto, and Off) and two fan
settings (On and Auto). It is a manual or auto changeover control with dual setpoint capability. It
can be used with a remote zone temperature sensor BAYSENS017B.

10 RT-SVX25C-EN
General Information
Zone Sensor (BAYSENS110A)
This electronic sensor features four system switch settings (Heat, Cool, Auto, and Off) and two fan
settings (On and Auto) with four system status LED’s. It is a manual or auto changeover control with
dual setpoint capability. It can be used with a remote zone temperature sensor BAYSENS017B.
Programmable Zone Sensor - BAYSENS019C
This 7 day programmable sensor features 2, 3 or 4 periods for Occupied or Unoccupied
programming per day. If the power is interrupted, the program is retained in permanent memory.
If power is off for an extended period of time, only the clock and day may have to be reset.
Remote Zone Sensor (BAYSENS016A)
This bullet type temperature sensor can be used for outside air (ambient) sensing, return air
temperature sensing, supply air temperature sensing, and remote temperature sensing
(uncovered. Wiring procedures vary according to the particular application and equipment
involved. Refer to the unit’s wiring diagrams for proper connections.
BAYSTAT036A
Single Stage - 1 Heat/1 Cool
BAYSTAT037A
Multi Stage - 2 Heat/2 Cool - Can be used for Economizer Operation.
BAYSENS025A
Remote sensor for BAYSTAT036A, 037A.
Remote Zone Sensor (BAYSENS017B)
This electronic sensor can be used with BAYSENS006B, 008B, 010B, 019B Remote Panels. When this
sensor is wired to a BAYSENS019B Remote Panel, wiring must be 18 AWG Shielded Twisted Pair
(Belden 8760 or equivalent). Refer to the specific Remote Panel for wiring details.
High Temperature Sensor (BAYFRST001A)
This sensor connects to the RTRM Emergency Stop Input on the LTB and provides high limit
“shutdown” of the unit. The sensor is used to detect high temperatures due to fire in the air
conditioning or ventilation ducts. The sensor is designed to mount directly to the sheet metal duct.
Each kit contains two sensors. The return air duct sensor (X1310004001) is set to open at 135°F. The
supply air duct sensor (X1310004002) is set to open at 240°F. The control can be reset after the
temperature has been lowered approximately 25°F below the cutout setpoint.
Evaporator Frost Control
This input incorporates the Frostat™ control (FOS) mounted in the indoor coil and can be activated
by closing a field supplied contact installed in parallel with the FOS.
If this circuit is open before the compressor is started, the compressor will not be allowed to
operate.
Anytime this circuit is opened for 5 continuous seconds during compressor operation, the
compressor for that circuit is immediately turned “Off”. The compressor will not be allowed to
restart for a minimum of 3 minutes should the FOS close.
Smoke Detector Sensor (Optional)
This sensor is only applicable on units equipped with a RTOM. It provides high limit “shutdown”
of the unit and requires a manual reset. The sensor is used to detect smoke due to fire in the air
conditioning or ventilation ducts.