Specifications

15
SC 2210 Electronic Thermostat
SimpleComfort
®
2210 Electronic Thermostat Conversion to:
Lennox HP21 With CB21 PCB Heat Pump Systems
R-VR
Y1
O
F
E
W1
L
X
Y2
24 VAC, Return
Compressor Contactor
Reversing Valve (Cooling Mode)
Fan Contactor Circuit
Emergency Heating Circuit
2nd Stage Heating Circuit
System Monitor LED
24 VAC, Common
2nd Stage Cooling Circuit
Lennox HP21 with CB21 PCB
Low Voltage Terminal Board