Wiring Diagrams; Single Compressor Heat Pump With Electric Backup; Dual Compressor Heat Pump With Electric Backup - ICM Controls SC 4211 Installation, Operation & Application Manual

Single Compressor
heat pump with electric backup
Service Led Wire
Transformer
120
24 VAC
VAC
Reversing Valve
Emergency Heat
* outdoor sensor only reads outdoor temperature
Note: For systems without emergency strip heat, a jumper wire should be placed between W2 & E.

Wiring Diagrams

Optional
remote or
outdoor sensor
Compressor
Auxiliary Heat
Fan
Dual Compressor
heat pump with electric backup
Service Led Wire
Transformer
120
24 VAC
VAC
Reversing Valve
Compressor #1
Compressor #2
Emergency Heat
Optional
remote or
outdoor sensor
Auxiliary Heat
Fan