Heating and ventilation
In Audi the system of heating, with an adjustable stream of air is installed. If to turn the regulator of heating to the right, then the gate opens a way to an air stream via the heat exchanger. It is a small heating element through which the cooling liquid heated by the engine constantly flows. If heating is switched off, then not the stream of hot liquid is blocked, and air streams in salon on other channel, bypassing the heat exchanger.
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