Installation Manual

1 Stage Heat Pump with Aux Heat and Emergency Heat
Label:
Function:
Y1
Compressor Relay (Stage 1)
G
Fan Relay
R
24VAC power from heating/cooling
transformer
W1
Heat Relay (Stage 1), Aux heat,Emergency
heat
In this configuration both Aux and E heat are supplied
using the W1 wire.
C
24VAC Common Wire †
*/OB
Compressor Relay (Stage 2), Heat Relay
(Stage 2), Changeover Valve Relay (Stage 1)
Dual Fuel
Label:
Function:
Y1
Compressor Relay (Stage 1)
G
Fan Relay
R
24VAC power from heating/cooling
transformer
W1
Heat Relay (Stage 1), Aux heat, Emergency
heat
C
24VAC Common Wire †
*/OB
Compressor Relay (Stage 2), Heat Relay
(Stage 2), Changeover Valve Relay (Stage 1)
12