Operation
Heating/Cooling
When the room thermostat calls for heat from the water heater, it activates a circulation pump locat- ed inside the Air Handler. This pump delivers hot water through the furnace coil and back to the water tank/boiler. Simultaneously, the furnace blower switches on to high speed and will start circulating air across the coil, which picks up heat and delivers it to the rest of your home.
Once the thermostat's temperature is reached, the pump will shut off, and the blower will return to its
Note: When the furnace blower is left running on low speed, the air in the home circulates continuous- ly. When the heat is called for, the blower will automatically switch to a higher speed. After the required hot air has been delivered, the blower will switch back to low speed.
When the thermostat calls for cooling (optional A coil and condensing unit required) the furnace blower activates to high speed and the outdoor condenser unit is energized. After the thermostat temperature is reached, the condensing unit will shut off, and the blower will return to it’s continu- ous setting. Continuous low speed can be selected by a qualified electrician.
Optional Circulation Timer Models
Some models are equipped with a circulation timer. It is normal operation for these models to automatically run the circulation pump for a short period of time intermittently.
Continuous Low Speed Hook Up
Continuous low speed can be selected by con- necting the red wire from the blower to the N/C contact on the relay as indicated on the wiring diagram.
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