Heater System: Description

System is a blend air type. Outside air is heated and then mixed with cooler outside air to attain desired temperature. System consists of blower and air inlet assembly, heater air distributor assembly and heater control panel.

Blower and air inlet assembly and heater hoses are located on the engine side of dash panel while heater core and distributor duct are on passenger side. System has no heater control valve. Coolant circulation keeps heater core hot at all times.

Operation of blower motor is controlled by the fan switch. The motor is connected in series with the fan switch and blower resistor assembly.

On Van models, an auxiliary heater is available for heating rear of vehicle. The unit operates independently of standard heater and has its own set of controls. Heater hoses connect at the standard heater and extend from the standard heater to the auxiliary heater. A vacuum-operated heater control valve is installed in the inlet line in the engine compartment to cut off coolant flow when heat is not desired.