Equipment Control Module
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Heat Stage 2 | O/B W2 |
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Heat Stage 1 |
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W/W1 |
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N/A |
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Y1 / W2 |
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Cool Stage 1 |
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Y/Y2 |
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Fan |
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G |
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24VAC Hot Heating |
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Rh |
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24VAC Hot Cooling |
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Rc |
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**Dry Contact 1 |
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Dry Contact 2 |
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24VAC Common |
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C |
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Humidify |
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HUM |
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Outdoor Air Temp |
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OAT |
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Remote Room Sensor |
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RRS |
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OAT/RRS Com |
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SRTN |
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Furnace |
W2 |
W/W1 |
Y1 |
Y/Y2 |
G |
R |
DHUM |
COM |
Humidifier Solenoid
Valve *
Outdoor Sensor *
Remote Room
Sensor *
Air Conditioner
Y |
R |
C* |
*Indicates connection may not be required/available.
**Option 19 set to 2.
A09127
Fig. 36 − Variable Speed, Multi−Stage, Step Modulating and Single−Stage
Furnace with Single−Stage Air Conditioner
82