Trane PTAC-SVX01C-EN Installation, Operation And Maintenance Manual page 15

Note: If using a third party
thermostat to control the
unit, the thermostat must
have a clearly marked OFF
state or position.
Note: It is important to make sure
that the control board's fuse
is functioning. The specs for
the control board fuse are:
5x20mm, 250V, 315mA, fast
acting. For more inormation
on a blown fuse on the
control board, check the
Troubleshooting section of
this document.
Table 6. Maximum wire length for front
desk switch and remote
control connections
Specification
External Interface Size
#22
#20
Thermostat
#18
Energy mgmt system #20
#18
Remote fan #20
#18
Display module #20
#18
Table 7. Wiring Voltage
Unit Mode
High Heat Pump
Low Heat Pump
High Emgcy Heat
Low Emgcy Heat
PTHE Heat Pump
Auxiliary is Electric
only
High Cooling
Low Cooling
High Fan
Low Fan
Off
PTAC-SVX01C-EN
Installation
Table 7. Wiring Voltage
Unit
PTEE Air Conditioner
(Auxiliary is Electric,
Hot Water, or Steam
In the event that none of the
Notes:
combinations listed in the table above is
present, the input will be deemed invalid and all
heating, cooling, and fan operation will be
disabled.
Wire
Length
100 ft.
200 ft
300 ft.
900 ft.
1500 ft.
60 ft.
66 ft.
100 ft.
120 ft.
Voltage at terminal
GH GL W
24 0 0
0 24 0
24 0 24
24 0 24
0 24 24
0 24 24
24 0 0
0 24 0
24 0 0
0 24 0
0 0 0
Mode GH
High Heat Pump 24
High Auxiliary Heat 24
Low Auxiliary Heat 0
High Cooling 24
Low Cooling 0
High Fan 24
Low Fan 0
Off 0
Corresponding
Normal
Y O Operation
24 0 Heat
24 0 Heat
0 0 Heat
24 0 Electric Heat Only
0 0 Heat
24 0 Electric Heat Only
24 24 Cool
24 24 Cool
0 0 Fan Only
0 0 Fan Only
0 0 Off – no capacity
Voltage at terminal Corresponding
GL W Y O Operation
0 0 24 0 Heat
0 24 0 X Heat
24 24 0 X Heat
0 0 24 X Cool
24 0 24 X Cool
0 0 0 X Fan Only
24 0 0 X Fan Only
0 0 0 X Off – no capacity
Normal
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