Heating and ventilation system
1 – deflector;
2 – air duct for heating the windshield; 3 – air supply cover; 4 – radiator; 5 – radiator casing; 6 – heater tap rod; 7 – outlet pipe; 8 – underwater pipe; 9 – heater tap; 10 – air distribution cover; 11 – heater fan electric motor; 12 – fan impeller; 13 – additional resistor; 14 – internal ventilation duct; 15 – lever of the air distribution cover; 16 – control lever bracket; 17 – air supply cover control handle; 18 – heater tap control handle; 19 – draft of the air supply cover.
Heater operation diagram
1 – air distribution cover; 2 – fan electric motor; 3 – impeller; 4 – heater tap; 5 – underwater pipe; 6 – outlet pipe; 7 – radiator casing; 8 – air supply cover; 9 – hood;
10 – deflector; 11 – air duct for heating the windshield; 12 – drive rods; 13 – control lever bracket; 14 – control handles; 15 – radiator; 16 – internal ventilation duct; 17 – lever of the air distribution cover.
The heating system is liquid. Coolant from the engine cooling jacket is used as a coolant. The system consists of the heater itself, a bracket with control levers and air ducts. The heater housing contains a radiator with a tap, an electric fan and two air dampers.
The valve and air intake damper are connected by flexible rods to the levers of the control unit. The extreme right position of the upper lever corresponds to the full opening of the valve and the maximum flow of coolant through the heater radiator.
With a similar position of the lower lever, the outside air intake damper is fully open, which corresponds to the maximum air flow through the heater. Rotating deflectors on the instrument panel allow you to direct air flow to heat the windshield, front door glass and interior. The lower damper (air distribution cover) is not connected to the heater control unit.
We open and close the flap using the lever attached to it on the left (driver's) side.
The air flow rate through the heater is controlled by a three-position switch. They can set one of two operating modes of the electric fan – minimum and maximum.
ATTENTION! Do not turn on the electric fan when the air intake damper is closed and the heater tap is open.
