The electric auxiliary heater is part of the heating system heat exchanger in the heating/air-conditioning system on vehicles with diesel engine.

The heating system heat exchanger integrated into the heating/air-conditioning system, located above the blower and perpendicular to the evaporator.

Construction

The electric auxiliary heater consists of 4 heating cells.

Each heating cell contains 4 heating elements.

The heating elements are grouped into pairs to form heating chains.

A total of 8 heating chains can be selected in 8 heating levels.

The regulator for the electric auxiliary heater is secured directly on the heating system heat exchanger with clamps).

Regulator and heating system heat exchanger form a single unit.

The following illustrations show:

the construction of the electric auxiliary heater

the construction of a heating cell