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Introduction
Fresh air for heating enters the passenger compartment through the inlet at the windshield. The air flows around the heating radiator and through various flap allocated to individual nozzles. If the heating system is set to "warm" (warm), then open the heating valve in the engine compartment to access the heat exchanger. The heat exchanger is located in the radiators and heated hot coolant. Passing the hot heat exchanger panels, the fresh air is heated and then enters the interior of the vehicle. The temperature inside the vehicle may, depending on the position of the rotary knob mounted on the left or right side of the cabin. The electronic control unit in the device regulates the heating valve opening time of heating, depending on the temperature in the cabin. Behind the heat exchanger in the device are internal service temperature sensors. Thus, the temperature in the car is maintained approximately constant regardless of the vehicle speed and the ambient temperature. To enhance the heating capacity is the four-stage heating fan. To blowout occurred on separate stages at different rates, it is switched to extra resistance. Due to their reduced strength of the current supplied to the fan motor, and airflow is slower. At the highest level of speed airflow additional resistance disconnected. If the heating system has an additional dust filter is provided capturing dust, pollen, air pollution and other microparticles. Switching possible to completely close access to the outside air. Regulation of air is then via a special air filter in the car.
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