Heater function - GF83.20-P-0002GH

MODEL 163 up to 31.8.01 

Function 

The heater enables a pleasant interior climate for the vehicle passengers in the event of different weather conditions.

A nominal temperature is preset at the heater push-button control module temperature selector wheel. This setting is transmitted to the blending air flaps in the heater housing via a cable and an actuation mechanism. Control is then carried out there as follows:

Temperature selector wheel MAX setting (full heater output) 

Due to the setting of the blending air flaps, the drawn in air is routed through the heat exchanger. Heated cooling water generally flows through this, as a result of which the passing air is heated. The temperature-controlled air is guided into the vehicle interior via the various air outlets.

Temperature selector wheel MIN setting (no heater output) 

In this setting, the blending air flaps block the route to the heat exchanger. The drawn in fresh air is guided directly to the air outlets and therefore into the vehicle interior.