3239222 - Introduction - HEATER
GLOSSARY
LEDs
The LED code (Light Emitting Diode) is used for particular diodes capable of emitting light at a certain wavelength when a low voltage electric current passes through.Recirculation
This function of the ventilation system makes it possible to recirculate the same air in the passenger compartment, preventing the intake of outside air. It is a very useful function because it makes it possible to exclude the entry into the passenger compartment of undesirable outside air (fumes, polluted air when driving in traffic, etc.).Heat exchanger
This device has been designed (with a relatively low volume compared with heat exchange surfaces) to allow the flow of heat from a fluid at a higher temperature to another fluid at ambient temperature.The heater system is enclosed in an integrated conveyer/distributor unit that encapsulates all components.This unit is housed below the centre of the facia. The controls are located on the central console.COMPONENTS
Heater controls
-
1, air temperature adjustment knob
2, air ventilation selection knob
3, flow distribution selection knob
4, recirculation function activation key
5, heated rear window activation key
The left-hand knob is used to adjust the temperature of air taken into the passenger compartment:
- right-hand sector (red): warmer air
- left-hand sector ( blue): cooler air
The right-hand knob selects air distribution to the passenger compartment. Different distribution patterns are available. Clockwise positions are as follows:
- flow to front outlets only,
- flow to front and lower outlets,
- flow to lower outlets only,
- flow to lower outlets and windscreen,
- flow to windscreen only;
1, Duct/distributor assembly
2, Fan motor
3, Speed variator (resistor)
4, Heater radiator
5, Recirculation flap actuator
6, Distribution control
7, Mixer control
The electric fan which sends the outside
or recirculation air towards the duct/distributor receives a 12
V supply and is operated at different speeds by a nearby resistance.A resistive governor drives the fan at different
speeds.
The device alters the voltage signal that controls the fan by turning on one or more resistances:
- First speed, resistances R1, R2 and R3 activated
- Second speed, resistances R2 and R3 activated.
- Third speed, resistance R3 activated.
- Fourth speed, no resistance activated.