SC
2210 Electronic Thermostat
R-VR
M
R
F
E
Y
L
X
Y2
Lennox HP22 with CB19 PCB Low V
oltage T
erminal Board
SimpleComfort
®
2210 Electronic Thermostat Conversion to:
Lennox HP22 With CB19 PCB Heat Pump Systems
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