Operation, Heating/Cooling, Ventilation

Operation

Heating/Cooling

When the room thermostat calls for heat, it acti- vates a circulation pump located inside the Clean Air Furnace. This pump delivers hot water from the water heater, through the furnace coil and back to the water tank. Simultaneously, the fur- nace 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 pre-set speed or off.

Note: When the furnace blower is left running on low speed the air in the home circulates continuously. When the heat is called for the blower will automati- cally 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 (evaporator 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 its preset speed or off.

Ventilation

The heat recovery ventilation (HRV) portion of the Clean Air Furnace, is automatic. Once set, a desired amount of fresh air will be drawn into the home while the furnace blower is activated.

To reduce humidity increased ventilation may be required during heating season. An optional remote dehumidistat can be installed. The dehu- midistat will increase the speed of the furnace blower to high and will return to its original setting when humidity levels decrease. Your dehumidistat must be switched off during warmer months as it is not required for air conditioning operation. To increase humidity a quality humidifier should be added to the system.

Typically the air flow for ventilation will be set to 50

-70cfm, for low speed furnace operation, and 100 - 150cfm at high speed. The pleated furnace filter should be checked regularly and replaced as needed. The HRV filter should be washed twice a year or more often if needed.

Off Season Circulation Timer

All models are equipped with a circulation timer. It is normal operation for these models to automati- cally run the circulation pump for a short period of time intermittently.