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Installation Operation
Maintenance
Split Systems Cooling
Condensers
7½ - 20 Tons
Model Numbers:
TTA090A***F (60 Hz)
TTA120A***F (60 Hz)
TTA120B***F (60 Hz)
TTA120C***G (60 Hz)
TTA150B***F (60 Hz)
TTA180B***F (60 Hz)
TTA180C***G (60 Hz)
TTA240B***F (60 Hz)
December 2007
TTA075AD**F (50 Hz)
TTA085AD**F (50 Hz)
TTA100AD**F (50 Hz)
TTA100BD**F (50 Hz)
TTA100CD**G (50 Hz)
TTA125BD**F (50 Hz)
TTA155BD**F (50 Hz)
TTA155CD**G (50 Hz)
TTA200BD**F (50 Hz)
SS-SVX08A-EN
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Summary of Contents for Trane TTA090A F Series
- Page 1 Installation Operation Maintenance Split Systems Cooling Condensers 7½ - 20 Tons Model Numbers: TTA090A***F (60 Hz) TTA075AD**F (50 Hz) TTA155BD**F (50 Hz) TTA120A***F (60 Hz) TTA085AD**F (50 Hz) TTA155CD**G (50 Hz) TTA120B***F (60 Hz) TTA100AD**F (50 Hz) TTA200BD**F (50 Hz) TTA120C***G (60 Hz) TTA100BD**F (50 Hz) TTA150B***F (60 Hz)
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Page 2: Warnings And Cautions
Excessive heat from soldering, brazing or welding with refrigerant vapors present can form highly toxic gases and extremely corrosive acids. Failure to follow all proper safe refrigerant handling practices could result in death or serious injury. © 2007 Trane All rights reserved SS-SVX08A-EN... -
Page 3: Table Of Contents
Table of Contents Model Number Description ......... 4 General Information . -
Page 4: Model Number Description
Model Number Description T T A 0 9 0 1 2 3 4 5 6 9 10 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. 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. -
Page 5: General Information
General Information Installation procedures should be performed in the sequence that they appear in this manual. Do not destroy or remove the manual from the unit. The manual should remain weather-protected with the unit until all installation procedures are complete. Note: It is not the intention of this manual to cover all possible variations in systems that may occur or to provide comprehensive information concerning every possible contingency that may be encountered during an installation. -
Page 6: Lifting Recommendations
General Information Lifting Recommendations Before preparing the unit for lifting, estimate the approximate center of gravity for lifting safety. Because of placement of internal components, the unit weight may be unevenly distributed. Approximate unit weights are given in Table Table 1. Total Unit Weight and Corner Weights (lbs) Ship Corner Weights... -
Page 7: Unit Mounting
Pre-Installation Clearances Provide enough space around the unit to allow unrestricted access to all service points. Refer to Figure 1 through Figure 8, p. 13 for unit dimensions and minimum required service and free air clearances. Observe the following points to ensure proper unit operation. Do not install the unit under a low overhang. -
Page 8: Refrigerant Piping
Pre-Installation WARNING Mounting Integrity! Ensure that the roof structure supports are strong enough to support the weight of the unit and any accessories. Failure to do so could result in death or serious injury or possible equipment or property-only damage. WARNING Fiberglass Wool! Product contains fiberglass wool. -
Page 9: Dimensional Data
Dimensional Data Figure 2. TTA075A, TTA090A, Dimensional Data, Connection Location, Clearances, Corner Weights Figure 3. TTA085A, TTA100A, TTA120A, Dimensional Data, Connection Location, Clearances, Corner Weights SS-SVX08A-EN... - Page 10 Dimensional Data Figure 4. TTA100B, TTA120B, TTA125B, TTA150B, Dimensional Data, Connection Location, Clearances, Corner Weights Figure 5. TTA100C, TTA120C, Dimensional Data, Connection Location, Clearances, Corner Weights SS-SVX08A-EN...
- Page 11 Dimensional Data Figure 6. TTA155B, TTA180B, Dimensional Data, Connection Location, Clearances, Corner Weights SS-SVX08A-EN...
- Page 12 Dimensional Data Figure 7. TTA155C, TTA180C, Dimensional Data, Connection Location, Clearances, Corner Weights SS-SVX08A-EN...
- Page 13 Dimensional Data Figure 8. TTA200B, TTA240B, Dimensional Data, Connection Location, Clearances, Corner Weights SS-SVX08A-EN...
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Page 14: Electrical Data
Electrical Data Table 2. TTA Unit Electrical Data — 60 Hz Basic Unit Characteristics Compressor Motor Outdoor Fan Motor Amps Amps Allowable Minimum Model Electrical Voltage Circuit Maximum Number Characteristics Range Ampacity Fuse Size Qty. Qty. TTA090A3 208-230/60/3 187-253 34.5 25.1 182.0 TTA090A4... - Page 15 Electrical Data 50 Hz Table 3. TTA Unit Electrical Data — 50 Hz Basic Unit Characteristics Compressor Motor Outdoor Fan Motor Amps Amps Allowable Minimum Model Electrical Voltage Circuit Maximum Number Characteristics Range Ampacity Fuse Size Qty. Qty. TTA075AD 380-415/50/3 380-415 15.6 11.2...
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Page 16: Installation
Installation Refrigerant Piping Guidelines Maximum recommended line lengths (per circuit): Maximum linear length...... 80 Ft. (w/o accumulator) Maximum suction line lift....60 Ft. Maximum liquid line lift ....60 Ft. Maximum allowable pressure drops (R22): Suction Line........6 psi Liquid Line ........35 psi (w/o subcooler) Note: Route refrigerant piping for minimum linear length, minimum number of bends and fittings (no reducers) and minimum amount of line exposed to outdoor ambients. - Page 17 Installation Figure 9. Outdoor Units - Refrigerant Piping (w/ Dry Nitrogen) CAUTION System Component Damage! Do not remove the seal caps from refrigerant connections, or open the service valves until prepared to braze refrigerant lines to the connections. Excessive exposure to atmosphere (>...
- Page 18 Installation Figure 10. Outdoor Units - Refrigerant Piping (w/ R-22) Refrigerant Piping Procedure (Indoor Unit) Once liquid and suction lines are complete to the refrigerant connections on the indoor unit, puncture the seal caps on the indoor unit connection stubs to release the dry nitrogen charge. CAUTION Unit Damage! Do not apply heat to remove seal caps until they have been punctured.
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Page 19: Leak Check
Installation Leak Check After the brazing operation of refrigerant lines to both the outdoor and indoor unit is completed, the field brazed connections must be checked for leaks. Pressurize the system through the service valve with dry nitrogen to 200 psi. Use soap bubbles or other leak-checking methods to ensure that all field joints are leak free. - Page 20 Installation Table 4. TTA Refrigerant Charge (R-22) Model Refrigerant Charge TTA090A 16 lbs 0.0 ozs TTA075A TTA085A TTA120A 19 lbs 0.0 ozs TTA100A TTA120B 10 lbs 8.0 ozs (ea. Ckt.) TTA100B TTA150B 11 lbs13.0 ozs (ea. Ckt.) TTA125B TTA180B 15 lbs 0.0 ozs (ea. Ckt.) TTA155B TTA240B 18 lbs 0.0 ozs (ea.
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Page 21: Electrical Wiring
Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. - Page 22 Installation WARNING Ground Required! Follow proper local and state electrical code on requirements for grounding. Failure to follow code could result in death or serious injury. Unit Power Supply The installer must provide line voltage circuit(s) to the unit main power terminals as shown by the unit wiring diagrams in Service Facts or field wiring.
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Page 23: Low Voltage Wiring
Installation Low Voltage Wiring Mount the indoor thermostat in accordance with the thermostat installation instructions. Install color-coded, weather-proof, multi-wire cable according to the Interconnecting Wiring diagrams in the Air Handler IOM. TTA090A/TWE090A, TTA120A/TWE120A, TTA120C/TWE120 Field Wiring: 3 power wires, line voltage 3 power wires, line voltage for 3 phase a. - Page 24 Installation (2) TTA090A/TWE180B, (2) TTA120A/TWE240B Field Wiring: 3 power wires, line voltage 3 power wires, line voltage for 3 phase a. 2 wires for single phase Cooling only thermostat: 4 wires, 24 volts a. One stage electric heat: add 1 additional wire, 24 volts b.
- Page 25 Installation TTA090A/TWE090A, TTA120A/TWE120A Field Wiring: 3 power wires, line voltage 3 power wires, line voltage for 3 phase a. 2 wires for single phase Cooling only thermostat: 3 wires, 24 volts a. Digital thermostats: add 1 additional wire, 24 volt common b.
- Page 26 Installation TTA150A/TWE180A, TTA120A/TWE120A, TTA240B/TWE240B, TTA180C/TWE180B Field Wiring: 3 power wires, line voltage 3 power wires, line voltage for 3 phase; 2 wires for single phase Cooling only thermostat: 3 wires, 24 volts a. Digital thermostats: add 1 additional wire, 24 volts b.
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Page 27: Wiring Diagram
Wiring Diagram Figure 13. Night Setback Panel Field Wiring Figure 14. Zone Sensor Field Wiring SS-SVX08A-EN... - Page 28 Wiring Diagram Figure 15. Thermostat Field Wiring SS-SVX08A-EN...
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Page 29: Refrigerant Circuit
Refrigerant Circuit Figure 16. Typical Split System Cooling NOTE A: ONLY ONE OUTDOOR AND INDOOR COIL REFRIGERANT ENTRY AND EXIT CIRCUIT IS SHOWN; ALL MODELS HAVE MULTIPLE ENTRY AND EXIT CIRCUITS. SS-SVX08A-EN... -
Page 30: Safety Controls
Pre-Start Safety Controls Note: All of these controls may not be installed on your unit, check electrical schematic. Low Outdoor Ambient Cooling The Evaporator Defrost Control is standard equipment on Air Handlers and will permit low ambient cooling down to 35°F . For cooling operation down to 0°F , use an Accessory Head Pressure Control on the outdoor unit. - Page 31 Pre-Start Refrigerant Piping Performed initial leak test? Connected properly sized and constructed liquid and suction lines to the connection stubs at both the indoor and outdoor units? Insulated the entire suction line? Insulated portions of liquid line exposed to extremes in temperature? Evacuated each refrigerant circuit to 350 microns? Charged each circuit with proper amount of R-22? Electrical Wiring...
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Page 32: Start-Up
Start-Up Electromechanical Controls Unit Model Number Digits 9 and 10 = 00 or 0S Sequence of Operation Once the unit is properly installed and pre-start procedures are complete, start the unit by turning the System Switch on the indoor thermostat to either HEAT, COOL or AUTO. The system should operate normally. -
Page 33: Reliatel™ Control
Start-Up ReliaTel™ Control Unit Model Number Digits 9 and 10 = 0R, 0T, OU or OW Sequence of Operation Once the unit is properly installed and pre-start procedures are complete, start the unit by turning the System Switch on the indoor thermostat to either HEAT, COOL or AUTO. The system should operate normally. -
Page 34: Reliatel™ Control Heating Operation
Start-Up Note: Irregular unit operation may occur when the unit is controlled with a triac-switching thermostat. Please review the approved thermostat vendor list for all recommended relay-switching thermostats. ReliaTel™ Control Evaporator Fan Operation When the fan selection switch is set to the AUTO position, the RTRM energizes the evaporator fan relay coil approximately 1 second after energizing the compressor contactor coil in the cooling mode. -
Page 35: Service Test Modes Reliatel™ Controls
Service Test Modes ReliaTel™ Controls Test Modes Upon power initialization, the RTRM performs self-diagnostic checks to ensure that all internal controls are functional. It also checks the configuration parameters against the components connected to the system. The Liteport LED located on the RTRM module is turned “On” within one second of power-up if internal operation is okay. -
Page 36: Troubleshooting
For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. -
Page 37: System Status Checkout Procedure
Troubleshooting Step the system through all of the available modes, and verify operation of all outputs, controls and modes. If a problem in operation is noted in any mode, you may leave the system in that mode for up to one hour while troubleshooting. Refer to the sequence of operations for each mode, to assist in verifying proper operation. - Page 38 Troubleshooting Simultaneous Heat and Cool Failure Emergency Stop is activated. Method 2. The second method for determining system status is done by checking voltage readings at the RTRM (J6). The system indication descriptions and the approximate voltages are listed below. System Failure Measure the voltage between terminals J6-9 &...
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Page 39: Resetting Cooling And Heating Lockouts
Troubleshooting Resetting Cooling and Heating Lockouts Cooling Failures and Heating Lockouts are reset in an identical manner. Method 1 explains resetting the system from the space; Method 2 explains resetting the system at the unit. Note: Before resetting Cooling Failures and Heating Lockouts check the Failure Status Diagnostics by the methods previously explained. -
Page 40: Test 3 - System Mode And Fan Selection
Troubleshooting Test 3 - System Mode and Fan Selection The combined resistance of the Mode selection switch and the Fan selection switch can be measured between terminals 2 and 4 on the Zone Sensor. The possible switch combinations are listed in Table 7 with their corresponding resistance values. -
Page 41: Programmable & Digital Zone Sensor Test
Troubleshooting Programmable & Digital Zone Sensor Test Testing serial communication voltage Verify 24 VAC is present between terminals J6-14 & J6-11. Disconnect wires from J6-11 and J6-12. Measure the voltage between J6-11 and J6-12, should be about 32 VDC. Reconnect wires to terminals J6-11 and J6-12. Measure voltage again between J6-11 and J6- 12, voltage should flash high and low every 0.5 seconds. -
Page 42: Maintenance
Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. -
Page 43: Precautionary Measures
Maintenance Remove corrosion from any surface and repaint. Check the gasket around the control panel door to ensure it fits correctly and is in good condition to prevent water leakage. Inspect the evaporator fan belt. If it is worn or frayed, replace it. Inspect the control panel wiring to ensure that all connections are tight and that the insulation is intact. -
Page 44: Maintenance Log
Maintenance Log Table 8. Maintenance Log* Evaporator Entering Air Compressor Ambient Superheat Subcooling Temp. Suction Discharge Circuit #1 Circuit #1 Date (°F) Bulb Bulb Pressure Pressure (°F) (°F) Perform each inspection once per month (during cooling season) while unit is operating Notes: SS-SVX08A-EN... -
Page 45: Warranty
TTA, TTN, TTP , TTR, TTB, TTX, TTY and TTZ (Parts Only) This warranty is extended by Trane to the original purchaser and to any succeeding owner of the real property to which the Air Conditioner is originally affixed, and applies to products purchased and retained for use within the U.S.A. - Page 46 This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Trane—Warrantor, 2701 Wilma Rudolph Blvd., Clarksville, TN 37040 GW-598-4799 SS-SVX08A-EN...
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Page 47: Wiring Diagram Matrix
Wiring Diagram Matrix WIRING DIAGRAM NO. DIAGRAM TYPE UNIT MODEL NO'S TTA120B3, TTA120B4, TTA120BW, TTA100BD, TTA150B3, 4367-0325 ElectroMechanical Connection and Schematic TTA150B4, TTA150BW, TTA125BD, TTA120BK, TTA150BK 4367-0326 ElectroMechanical Connection and Schematic TTA100CD, TTA120C3, TTA120C4, TTA120CW TWA090A3, TWA090A4, TWA090AW, TWA120A4, 4367-0327 ElectroMechanical Connection and Schematic TWA120AW, TWA075AD, TWA100AD TTA155BD, TTA180B3, TTA180B4, TTA180BW, TTA180BK,... - Page 48 Literature Order Number SS-SVX08A-EN Date December 2007 Supersedes TTA-SVX02D-EN (November 2007) The manufacturer has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.
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