Description of the system

DESCRIPTION OF THE SYSTEM

The automatic heater is composed of a single assembly and by an electronic control unit.

The assembly, shown diagrammatically in cross-section below, is composed of a conveyor (A) and by a heating-distribution unit (B).

1. Conveyor
2. Heating-distribution unit
3. Vent regulating outside air flow and recirculation
4. Upper air distribution vent
5. Lower air distribution vent
6. Heating/cooling radiator
7. Air mixing vent
8. Electric fan

The conveyor (A) can be divided into two parts, one upper and one lower. One end of the upper part is shaped so that it can be connected to the lower outside passenger compartment external compartment opening located under the windscreen.

In the upper front part of the conveyor there is a second opening which is in communication with the passenger compartment (air intake for the recirculation function).

A vent (1) is located between the two air intake openings inside the conveyor which can close off one of the two openings when suitably positioned.

The vent is controlled by two levers and by an electronic actuator (motor) fixed to the outside of the conveyor.

A multiple-speed electric fan (6) is installed on the lower part of the conveyor near the air intake.

Two electric motors are fixed to the left-hand side of the heating-distribution unit which, via two levers, tie rods and a toothed section, position the distribution vents (2 and 3), the air mixing vent (5), at the same time as the tap control lever located on the inlet duct of the heating/cooling radiator (4).

The system is controlled by an electronic unit located on the central console (see diagram below). On the front part of the unit there is panel with twelve buttons and two displays (see "ELECTRONIC CONTROL UNIT - FRONT PANEL").