Trane Touchscreen Programmable Thermostat User Manual

BAS-SVX44A-EN11
Installation and Wiring
Figure 1.Security screw removal and cover release
2. Push the cover thumb tab to release the cover from the backplate as shown above.
3. Route the wires through the opening in the backplate as shown below. Wires should be marked to
 ensure proper connection to terminals.
Figure 2. Wire routing, mounting, and mounting dimensions
4. If mounting the backplate directly to a wall surface, hold the backplate against the surface andthen
 level and mark the fastener...

12BAS-SVX44A-EN
Installation and Wiring
Wiring and Wiring Diagrams
Wiring
WARNING
Hazardous voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power cannot be inadvertently energized. Failure to
disconnect power before servicing could result in death or serious injury.
NOTICE
Equipment damage!
Applying excessive voltage to the thermostat can permanently damage it.
Note: Terminal
 blocks are included with the...

BAS-SVX44A-EN13
Installation and Wiring
Terminal Identification
Table 3identifies the programmable thermostat terminals.
Wiring Diagrams
The following diagrams show typical wiring scenarios for the touch-screen programmable
thermostat.
UseTable 4and the corresponding figure to correctly wire the thermostat. Table 3. Terminal identification
Connector 
TypeTerminal
Label(a)
(a) Label order above is how they appear on the thermostat terminal block.
Terminal Description
8-pin Connectors
Dh Dehumidify relay...

14BAS-SVX44A-EN
Installation and Wiring
Figure 4. Programmable Thermostat, 1H/1C, Conventional (Option 1)
Figure 5. Programmable Thermostat, 1H/1C, Heat Pump Without Auxiliary Heat (Option 2)
Fa n24 VacC
G Y
W
Rc
R
W2Y2 A
S1 S2
Hp Hs
Dh
Heat
Economizer/TOD
Dehumidification
Remote Humidity Sensor
Remote Temperature Sensor
Compressor L2
L1 (hot)
Single Transformer:
(jumper
installed)
Fa n L2
L1 (hot)
24 Vac
Heat
Compressor
L2
L1 (hot)
24 Vac
Cooling Transformer Heating Transformer Two Transformers:...

BAS-SVX44A-EN15
Installation and Wiring
Figure 6. Programmable Thermostat, 1H Only, Conventional Without Fan (Option 3)
Figure 7. Programmable Thermostat, 1H, Conventional With Fan (Option 4)
Figure 8. Programmable Thermostat, 1C, Conventional (Option 5)
24 Vac
C
G Y
W
Rc
R
W2Y2 A
S1 S2
Hp Hs
Dh
Heat
Economizer/TOD
Dehumidification
Remote Temperature Sensor Remote Humidity Sensor
L2
L1 (hot)
(jumper
installed)
Fa n 24 Vac
C
G Y
W
Rc
R
W2Y2 A
S1 S2
Hp Hs
Dh
Heat
Economizer/TOD
Dehumidification
Remote...

16BAS-SVX44A-EN
Installation and Wiring
Figure 9. Programmable Thermostat, 2H/1C, Heat Pump With Auxiliary Heat (Option6)
Figure 10. Programmable Thermostat, 2H/2C, Conventional (Option7)
Fa n24 Vac
Changeover Valve
Compressor
Auxiliary Heat
L2
L1 (hot)
(jumper
installed)
Economizer/TOD
Dehumidification
Remote Temperature Sensor Remote Humidity Sensor
W1
Y2 A
S1 S2
Hp Hs
Dh
C
G Y
O/B
Rc
R
Fa n
Heat 1 Heat 2
24 Vac
C
G Y
W
Rc
R
W2Y2 A
S1
S2
Hp Hs
Dh
Economizer/TOD Dehumidification
Remote Temperature...

BAS-SVX44A-EN17
Installation and Wiring
Figure 11. Programmable Thermostat, 2H/1C, Conventional (Option8)
Figure 12. Programmable Thermostat, 1H/2C, Conventional (Option9)
Fa n
Heat 1 Heat 2
24 Vac
C
G Y
W
Rc
R
W2Y2 A
S1 S2
Hp Hs
Dh
Economizer/TOD Dehumidification
Remote Temperature Sensor Remote Humidity Sensor
Compressor L2
L1 (hot)
Single Transformer:
(jumper
installed)
Fa n L2
L1 (hot)
24 Vac
Heat 1
Compressor
L2
L1 (hot)
24 Vac
Cooling Transformer Heating Transformer Two Transformers:
(jumper...

18BAS-SVX44A-EN
Installation and Wiring
Figure 13. Programmable Thermostat, 2H/2C, Heat Pump Without Auxiliary Heat (Option10)
Figure 14. Programmable Thermostat, 3H/2C, Heat Pump With Auxiliary Heat (Option 11)
Thermostat Cover Replacement
After completing all wiring, replace the thermostat cover. To replace the cover:
1. Hook the cover over the top of the backplate. Apply light pressure to the bottom of the cover until
 it snaps into place.
2. To help deter tampering, install the security screw into...

BAS-SVX44A-EN19
Power, System Tests, and Software Reset
This section provides information about:
 Applying power
 Power-up test
 System tests
Applying Power
Restore power to the HVAC equipment. The thermostat initiates a power-up test and will display
an error, if one is detected (refer to the sections, “Power-up Test,” p. 19and“Error Codes,” p. 48 ).
If no errors are detected, the home screen appears as shown in Figure 16.
Figure 16. Home screens
Power-up Test
The power-up test is performed any time...

20BAS-SVX44A-EN
Power, System Tests, and Software Reset
System Tests
The system test mode is used to run diagnostics on the thermostat to verify that the unit is
functioning properly.
Referring to Table 6, p. 22, to run a system test:
1. Remove the thermostat cover as shown in the section, “Mounting the Backplate,” p.10.
2. Press and hold the Configurationbutton
 (refer toFigure17, p.21) for 3 seconds. The
configuration/test icon ( ) displays and the thermostat is now in Configuration
 Setup
Mode .
3....