Thermostatic Air Cleaner: Description and Operation

Thermac Operation:

The THERMAC system regulates in incoming air temperature without the use of vacuum. The air regulating damper is controlled by means of a self contained, wax pellet actuated assembly mounted in the air cleaner. When incoming air is cold, the wax material sealed in the actuator is in a solid phase and the damper closes off the cold air inlet. This causes all incoming air to be heated by the exhaust manifold. As the incoming air warms, the wax material expands changing to a liquid phase which forces out a piston to reposition the damper allowing a cold and hot air mix or all cold air to enter the engine.