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System-specific wiring guides
Heat pump systems
1H/1C Heat Pump
C
24VAC common
R
Power [1]
[R+Rc+Rh joined by jumper]
Rc
Rh
[R+Rc+Rh joined by jumper]
O/B
Changeover valve [7]
Y
Compressor contactor
G
Fan relay
2H/1C Heat Pump
C
24VAC common
R
Power [1]
Rc
[R+Rc+Rh joined by jumper]
Rh
[R+Rc+Rh joined by jumper]
O/B
Changeover valve [7]
Aux
Auxiliary heat relay
Y
Compressor contactor
G
Fan relay
L
Relay [12]
Power supply. Provide disconnect means and overload protection as required.
[1]
Remove jumper (Rc to Rh) for systems with two transformers.
[2]
In Installer Setup, set system type to Heat Only.
[3]
In Installer Setup, set system type to Heat Only with Fan.
[4]
In Installer Setup, set system type to Cool Only.
[5]
In Installer Setup, set system type to 2 Heat/2 Cool Conventional.
[6]
In Installer Setup, set changeover valve to O or B.
[7]
In Installer Setup, set system type to 1 Heat/1 Cool Heat Pump.
[8]
In Installer Setup, set system type to 2 Heat/1 Cool Heat Pump.
[9]
In Installer Setup, set system type to 2 Heat/2 Cool Heat Pump.
[10]
In Installer Setup, set system type to 3 Heat/2 Cool Heat Pump.
[11]
"L" terminal sends a continuous output when thermostat is set to Em. Heat. Connect
[12]
to zoning panel and switch to Emergency Heat.
Français : voir la page 21 • Español: vea la página 41
[8]
[9]
See [notes] below.
2H/2C Heat Pump
C
24VAC common
R
Power [1]
Rc
[R+Rc+Rh joined by jumper]
Rh
[R+Rc+Rh joined by jumper]
O/B
Changeover valve [7]
Y
Compressor contactor (stage 1)
Y2
Compressor contactor (stage 2)
G
Fan relay
3H/2C Heat Pump
C
24VAC common
R
Power [1]
Rc
[R+Rc+Rh joined by jumper]
Rh
[R+Rc+Rh joined by jumper]
O/B
Changeover valve [7]
Aux
Auxiliary heat relay
Y
Compressor contactor (stage 1)
Y2
Compressor contactor (stage 2)
G
Fan relay
L
Relay [12]
17
[10]
[11]
69-2091EFS—05
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