74
Thermostat
Furnace
Heat Pump
O
RVS/Heat Stage 2
O/B W2
W2
Heat Stage 1
W/W1
W1
W2
*
Compressor Low
Y1
Y1
Compressor High
Y/Y2
Y/Y2
Y
Fan
G
G
24VAC Hot Heating
Rh
R
R
24VAC Hot Cooling
Rc
Dry Contact 1
D1
Dry Contact 2
D2
DEHUM
24VAC Common
C
COM
COM
Humidify
HUM
Outdoor Air Temp
OAT
Remote Room Sensor
RRS
OAT/RRS Com
OAT/RRS
Outdoor Sensor *
Humidifier Solenoid
Valve *
Remote Room
Sensor *
A06588
Fig. 33 -- Variable Speed/Multi--Stage Furnace w/Single--Stage Heat Pump
* Indicates connection may not be required/available.