Function Overview, Main Components and Brief Description

Functional Description





The air is drawn by the fan through the air intake on the right-hand side of the bonnet or is forced into the inlet by the ram effect when the car is travelling. The air then flows through an efficient filter which arrests particles of dust and dirt. The air then continues through the fan casing and heat exchanger and flows through various ducts to outlets in the facia and at the floor. Air from the interior is exhausted through special air outlets in the luggage compartment.

Air Control System:

The heating system is controlled as follows:

1 Vacuum-controlled dampers for guiding the flow of air through the system.

2 Thermostatically controlled, manually adjustable temperature control valve for controlling the flow of engine coolant through the heat exchanger.

3 Switch for controlling the fan speed.

The fan switch can be set for three different fan speeds. The switch has no "off" position, and the fan will therefore always be running, whenever the vacuum distributor is operative. When the air distribution control is set to "0", the supply circuit to the fan will be opened, regardless of the fan switch position. These functions are controlled by micro-switches actuated by the air distribution control knob.

Positions "A/C Max" and "A/C Fresh" of the air distribution control are intended for the air conditioning unit that can be incorporated into the ordinary heating and ventilation system. In cars not equipped with an air conditioning system, these positions are used only for supplying fresh air.

As from the 1984 models, cars with an air conditioning system includes a manually controlled air recirculation feature. Air recirculation is started automatically when the air distribution control is set to "A/C Max".

Note: Air recirculation should not be used in cold weather, since it may give rise to misting and frosting of the windows.

Apart from air to the central panel outlet, all air passes through the heat exchanger. The panel outlets can be closed and opened individually and, consequently, if the central panel outlet is shut, all air entering the car can be heated. In cars with air conditioning, the temperature control is used to regulate the temperature of the in- coming cooled air. The outer defroster nozzles for the side windows cannot be closed.





1 Switch for fan motor.

2 Temperature control.

3 Air distribution control (vacuum distributor).

4 Recirculation switch (as from the 1984 model).

5 AC switch (as from the 1981 model).

6 Centre air outlet.

7 Damper control.

8 Side window defroster.

9 Damper control, out er air outlet.

10 Outer air outlet.