Equipment Control Module |
| Furnace | |
RVS Cooling | O/B W2 | W2 | |
Heat Stage 3 (furnace) | W/W1 | W/W1 | |
Heat/Cool Stage 1 | Y1 / W2 | Y1 | |
Heat/Cool Stage 2 | Y/Y2 | Y/Y2 | |
Fan | G | G | |
24VAC Hot Heating | Rh | R | |
24VAC Hot Cooling | Rc |
| |
***Dry Contact 1 | D1 |
| |
Dry Contact 2 | D2 | DHUM | |
24VAC Common | C | COM | |
Humidify | HUM | Humidifier Solenoid | |
Outdoor Air Temp | OAT | ||
Valve * | |||
Remote Room Sensor | RRS | Outdoor Sensor * | |
OAT/RRS Com | SRTN | Remote Room | |
|
| Sensor * |
Heat Pump
O |
W2** |
Y1 |
Y/Y2 |
R |
C |
*Indicates connection may not be required/available.
**Some heat pumps may designate W1.
***Option 19 set to 2.
A09121
Fig. 30 − Variable Speed, Multi−Stage, Stage Modulating and Single−Stage
Furnace with 2−Stage Heat Pump
76
