Heating system
The main components of the interior heating system are an electric fan and a heat exchanger located in the box-shaped casing of the heater. The heat exchanger is connected to the engine cooling system via rubber hoses. The control unit for the functioning of the heater / air conditioner is mounted in the instrument panel of the car. The coolant heated in the engine circulates through the heater heat exchanger, giving off its heat to the air filling the casing. When the interior heating is turned on, the leaf damper opens, as a result of which the internal volume of the heater casing is connected to the volume of the passenger compartment. When the fan is turned on, the impeller of the latter begins to drive the air supplied to the passenger compartment through the heat exchanger, providing it with intensive heating.
Air conditioning system
The system consists of a condenser mounted in front of the radiator, an evaporator located next to the heater heat exchanger, a compressor mounted on the engine block and a receiver-drier equipped with a high pressure reducing valve. All components are interconnected by refrigeration lines.
The fan drives the air entering the passenger compartment through the evaporator heat exchanger, which operates in a mode opposite to that of the radiator. The refrigerant pumped through the heat exchanger, evaporating, takes away excess heat from the air. The temperature inside the passenger compartment is then reduced to the required comfortable value (operator's choice).