Pic. 14.1. Heating and air distribution unit: 1 - left heater; 2 - right heater; 3- electric fan; 4 - body; 5 - left heater radiator; 6 - right heater radiator; 7 - cabin air filter; 8 - air pipe; 9 - side ventilation grilles; 10 - central ventilation grilles; 11 - side window defroster; 12 - windshield defroster; 13 - air supply pipe to the lower rear part of the cabin; 14 - air supply pipe to the lower front part of the cabin
Air intake is carried out on the sides of the external rear-view mirrors and on the inner panels of the front door pillars. The air flow is directed into the cabin through two ventilation system filters and two centrally located fans.
Before reaching the vents, the air passes through the heater cores and is heated (pic. 14.2). Only cold air passes through the central ventilation nozzles
Pic. 14.2. Location of air ducts and air distribution nozzles: 1 - windshield heating nozzles; 2 - central ventilation nozzles; 3 - side ventilation nozzles; 4 - side window heating nozzles; 5 - nozzles for heating the front door windows; 6 - air supply nozzle to the feet of the driver and passenger; 7 - air supply nozzle to the feet of the rear passengers
Principle of operation
The vehicle is equipped with two air distribution units and two control units. This allows you to regulate the temperature of the incoming air for each side of the cabin.
Air distribution is synchronized and controlled from the driver's side unit. The driver can also control air mixing for the passenger area of the cabin.
Pulse type controls (The system operating mode is activated by briefly pressing the corresponding key), excluding temperature controller (rotary type) and air regulator.
In the basic version (without air conditioning system) air is supplied to the ventilation nozzles constantly. To stop the access of outside air into the cabin, all nozzles must be closed.