Features of the heating system device

The heating, air conditioning and ventilation system is a single complex that provides the most comfortable conditions in the car, regardless of weather conditions and driving conditions. The system includes a heater (increases the air temperature in any operating mode of the system), air conditioner (reduces air temperature and humidity), blower (fan) and air ducts with filter (provide air exchange in the cabin, purify the air from dust), as well as the control unit (controls all elements of the system to obtain the specified comfort parameters).

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The car is equipped with a liquid-type interior heater.



The heater radiator is connected to the engine cooling system by two hoses running in the engine compartment. The radiator is placed in a plastic casing of the climatic unit, installed under the central part of the instrument panel.



The main components of the heater (pic. 12.1):

• heat exchanger (radiator) 6 heater, designed to heat the air entering the passenger compartment with the heat of the engine cooling liquid;
• fan (blower) 11. Fan motor 12 with permanent magnet excitation, providing a regulated supply of outside air to the heater and air conditioning dampers. To obtain different values of the fan speed, a block of additional resistors is installed in the power supply circuit of the electric motor;
• damper 15 of the air temperature regulator coming from the heater to the passenger compartment. The amount of air passing through the heat exchanger of the heater and the amount of outside air passing through the heat exchanger depends on the change in its position;
• dampers 2 for distributing air from the heater through air ducts to the passenger compartment or for blowing the windshield.