Housing Assembly HVAC: Description and Operation

The HVAC module consists of the recirc motor, the blower motor and fan, the blower motor resistor, the heater core, and the evaporator core. The operations of these assemblies are controlled by the levers and switches on the HVAC control panel.

Distribution of the air is controlled by the mode levers and buttons on the control assembly. The various positions of the mode levers and buttons direct cooled, heated, blended, outside, or inside air through the air ducts. The flow of air during the various modes of operations is as follows:

^ Face - Instrument Panel Outlets With a Small Amount of Bleed Air to the Heater
^ Face and Feet - Instrument Panel Outlets, and Floor Outlets
^ Feet - Floor Outlets With a Small Amount of Bleed Air to Defroster
^ Top - Defroster Ducts With a Small Amount of Bleed Air to the Heater