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Single-Stage
Equipment Control Module Furnace Air Conditioner
N/A O/B W2
Heat Stage 1 W/W1 W
N/A Y1 / W2
Cool Stage 1 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 DHUM
24VAC Common C COM
C*
Humidify HUM
Outdoor Air Temp OAT
Remote Room Sensor RRS
OAT/RRS Com SRTN
Outdoor Sensor *
Humidifier Solenoid
Valve *
Remote Room
Sensor *
Y1
**
* Indicates connection may not be required/available.
** Option 19 set to 2.
A09124
Fig. 33 − Single−Stage Furnace with Single−Speed Air Conditioner