7
1H/1C Heat Pump (no auxiliary heat)
Rc
Power [1]
R
[R+Rc joined by jumper]
O/B
Changeover valve [4]
Y
Compressor relay
G
Fan relay
C
24VAC common
S1
Optional outdoor/remote sensor
2H/1C Heat Pump (with auxiliary heat)
L
Equipment monitor [5]
Aux/E
Auxiliary/Emergency heat relay (Heat 2)
Rc
Power [1]
R
[R+Rc joined by jumper]
O/B
Changeover valve [4]
Y
Compressor relay
G
Fan relay
C
24VAC common
S1
Optional outdoor/remote sensor
2H/2C Heat Pump (no auxiliary heat)
Y2
Compressor 2 relay
Rc
Power [1]
R
[R+Rc joined by jumper]
O/B
Changeover valve [4]
Y
Compressor 1 relay
G
Fan relay
C
24VAC common
S1
Optional outdoor/remote sensor
3H/2C Heat Pump (with auxiliary heat)
Y2
Compressor 2 relay
L
Equipment monitor [5]
Aux/E
Auxiliary/Emergency heat relay (Heat 2)
Rc
Power [1]
R
[R+Rc joined by jumper]
O/B
Changeover valve [4]
Y
Compressor 1 relay
G
Fan relay
C
24VAC common
S1
Optional outdoor/remote sensor
Wiring
See [notes] below
[1] Power supply. Provide disconnect means and overload protection as required.
[4] O/B set to control as either O or B in installer setup.
[5] Heat pump reset (powered continuously when thermostat is set to Em. Heat; system monitor when
set to Heat, Cool, or Off).
