ICM Controls SC 2311 - Lennox HP19;HP20 Conversion

18
SimpleComfort
®
2311 Electronic Thermostat Conversion to:
Lennox HP19 and HP20 Heat Pump Systems
SC 2311
Electronic Thermostat
R C
W1
O/B
Y W2 E G
24 VAC, return
24 VAC, common
Reversing valve (cooling mode)
Compressor contactor
2nd stage heating circuit (sequencer 1)
Fan contactor circuit
Emergency heating circuit
V-VR
X
R
M
Y
F
E
Lennox HP19 and HP20
Low Voltage Terminal Board