Volkswagen Passat '97, User Manual

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64
Air-conditioning
Ventilation flap and the fresh/air recirculation flap
The ventilation flap and the fresh/air recircula-
tion flap are activated by a common motor.
The flaps are adjusted separately by a drive
disc with two guide paths. The vacuum unit
and two-way valve previously used are no lon-
ger required.
SSP 192/036
Fresh air mode
In the fresh air mode, the ventilation flap and
the fresh/air recirculation flap are fully open at
speeds of below 20 kph. Fresh air is able to
flow into the car unobstructed.
Recirculated air
Recirculated air
SSP 192/024
SSP 192/028
Ventilation mode
At high speeds, the ventilation flap prevents too
much fresh air from entering the passenger
compartment. Opening and closing are
dependent on road speed.
The position of the ventilation flap is also
affected by the difference between the nominal
and actual temperature in the passenger com-
partment. If the temperature difference is very
large, the port cross-section stays open at
increasing speed so that the desired
temperature is achieved more quickly.
Fresh air
SSP 192/023
SSP 192/027
Fresh air
Colour code
Ventilation flap
Fresh/air recirculation flap
Drive disc