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PTAC-SVX01C-EN 15
Installation
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
External Interface
Wire
Specification
Size Length
Thermostat
#22 100 ft.
#20 200 ft
#18 300 ft.
Energy mgmt system #20 900 ft.
#18 1500 ft.
Remote fan #20 60 ft.
#18 66 ft.
Display module #20 100 ft.
#18 120 ft.
Table 7. Wiring Voltage
Unit Mode
Voltage at terminal Corresponding
Normal
OperationGH GL W Y O
High Heat Pump 24 0 0 24 0 Heat
PTHE Heat Pump
Auxiliary is Electric
only
Low Heat Pump 0 24 0 24 0 Heat
High Emgcy Heat 24 0 24 0 0 Heat
24 0 24 24 0 Electric Heat Only
Low Emgcy Heat 0 24 24 0 0 Heat
0 24 24 24 0 Electric Heat Only
High Cooling 24 0 0 24 24 Cool
Low Cooling 0 24 0 24 24 Cool
High Fan 24 0 0 0 0 Fan Only
Low Fan 0 24 0 0 0 Fan Only
Off 0 0 0 0 0 Off – no capacity
Notes: In the event that none of the
combinations listed in the table above is
present, the input will be deemed invalid and all
heating, cooling, and fan operation will be
disabled.
PTEE Air Conditioner
(Auxiliary is Electric,
Hot Water, or Steam
High Auxiliary Heat 24 0 24 0 X Heat
Low Auxiliary Heat 0 24 24 0 X Heat
High Cooling 24 0 0 24 X Cool
Low Cooling 0 24 0 24 X Cool
High Fan 24 0 0 0 X Fan Only
Low Fan 0 24 0 0 X Fan Only
Off 0 0 0 0 X Off – no capacity
Table 7. Wiring Voltage
Unit Mode
Voltage at terminal Corresponding
Normal
OperationGH GL W Y O
High Heat Pump 24 0 0 24 0 Heat