Installation Manual

Specifications subject to change without notice.
440 01 4900 00 41
Variable Speed Furnace with Single Stage Air
Conditioner
NOTE 9
Variable Speed Furnace with T wo--Stage Air
Conditioner
L09F027
NOTE 9
Variable Speed Furnace with Single Stage Heat
Pump (Dual Fuel)
L09F026
NOTE 9
Variable Speed Furnace with T wo--Stage Heat
Pump (Dual Fuel)
L09F028
NOTE 9
Fig. 38 -- Thermostat Wiring Diagrams
NOTES FOR THERMOSTAT WIRING DIAGRAMS
1. Refer to outdoor equipment Installation Instructions for additional information and setup procedure.
2. Outdoor Air Temperature Sensor must be attached in all dual fuel application.
3. Refer to ICP thermostat Installation Instructions for additional information and setup procedure.
4. When using a Humidity Sensing Thermostat, set DEHUMIDIFY OPTIONS to H DE--ENRGZD FOR DEHUM
5. HUM 24VAC terminal is 24 VAC and is energized when the low pressure switch closes during a call for heat.
6. When connecting 115 VAC to humidifier use a separate 115 VAC supply.
7. When using a humidifier on a HP installation, connect humidifier to hot water.