The system consists of a 4-speed fan, ventilation ducts and air ducts.
Levers are displayed on the front panel, which control the dividing dampers, distributing the air flow through various channels. The control box is located under the front panel.
Cold air is supplied through a grill at the rear of the engine compartment. The air from the passenger compartment exits through the ventilation holes in the rear of the body. The air is heated by a radiator through which the engine coolant circulates.
On vehicles with air conditioning, a damper is provided to block the flow of air from outside.