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14:24. System of heating and ventilation

System of heating and ventilation

1 – air distribution box,

2 – heater radiator,

3 – air supply case,

4 – fan

Heater radiator

1 – case of system of ventilation,

2 – heater radiator,

3 – fastening screws,

4 – branch pipes

Two types of system of heating are applied. On the main models the system of heating copes manually. On more expensive models the system of heating copes with the help of electronics. Both systems are identical, except for the control unit.

The control unit is located in the panel and for management uses valves of a folding shutter to distribute and mix the air given to salon through various parts of system.

Cold air arrives through a lattice in a back part of a motor compartment. Air from salon is removed via channels in a back part of the car. Heating of the arriving air is made by heated cooling liquid.

The switch of recirculation closes intake of fresh air while air in the car constantly circulates.


Prevention

For repair of system of heating and ventilation it is necessary to remove a steering wheel, an instrument guard together with a casing, forward walls of the intermediate console, facing of a subwindow partition, a combination of devices and a casing of a steering column.


THE CONTROL UNIT OF THE HEATER (MODELS TILL 1992)

Removal

PERFORMANCE ORDER
1. To disconnect a negative wire from the accumulator.
2. To remove the radio receiver.
3. To lower a steering column in the lowest situation.
4. To remove the switch of control of the lock of a seat belt.
5. To unscrew the lower screw of fastening of a decorative casing of a combination of devices.
6. To remove an ashtray.
7. To unscrew five screws (are specified by shooters) fastenings of the central console.
8. To push the console forward and to remove sockets from o'clock, the lighter and switches.
9. To unscrew four screws (are specified by shooters) fastenings of the control unit and to remove electric sockets and a cable of management.

Installation

Sequence of installation of cables of management of a heater


Directions of laying of a cable of management of a folding shutter of an air vent of a heater

1 – wrong direction,

2 – right direction

PERFORMANCE ORDER
Installation is made in the sequence, the return to removal. At the same time cables of management need to be established in a certain order.

THE CONTROL UNIT OF THE HEATER (MODELS SINCE 1993)

Removal

PERFORMANCE ORDER
1. To disconnect a negative wire from the accumulator.
2. To remove the central panel.
3. To remove an ashtray and to unscrew two screws located at the bottom of an ashtray casing.
4. To remove the radio receiver.
5. To unscrew two screws from the top part of a pocket of the radio receiver and to remove a pocket.
6. By means of the lever to remove the locking plate from the top corner of the central nozzle of ventilation and to unscrew the screw.
7. To unscrew four screws located under the heater control panel.
8. By means of the lever to remove switches from the lower part of the central nozzle of ventilation and to unscrew the opened screw.
9. To extend a casing forward and to remove sockets.
10. To unscrew two (are specified by an arrow) the screw, located above the control unit of a heater and to remove the block.
11. To release collars (are specified by an arrow) fastenings of a cable to the heater control unit.
12. To remove cables of management and the socket from the block.

Installation

Installation is made in the sequence, the return to removal.

HEATER FAN

Removal

PERFORMANCE ORDER
1. To unhook and take the casing placed under the dashboard on the right side.
2. To take the electric wires fastened to the fan case.
3. To disconnect electric sockets.
4. To remove the fan engine.
5. To remove the engine from a casing.
6. To unscrew screws of fastening of the case to a body.
7. To remove the fan from below. The fan is attached to the case by means of the fasteners which are behind the fan and screws on perimeter.
8. To remove contact of a wire from the control unit, to unscrew two screws and to separate the block from a casing.

Installation

PERFORMANCE ORDER
For installation of the fan it is necessary to perform operations in the return sequence in relation to removal process, to insert new fasteners on the case in the bottom of the dashboard.

HEATER

Removal

PERFORMANCE ORDER
1. In a motor compartment to establish two clips on branch pipes of system of heating and to disconnect them about a frontal partition.
2. To merge cooling liquid from a radiator of system of heating.
3. To disconnect a weight wire from the accumulator.
4. To remove the dashboard.
5. In a motor compartment to remove the fan air input deflector.
6. For access to bolts of fastening of a heater to unscrew screws (1) of fastening of a plastic board of ventilation and screws (2) fastenings of a screen wiper.
7. In a subwindow partition to unscrew three screws of fastening of system of heating.
8. In salon to unscrew the screw of the holder of branch pipes of heating.
9. To unscrew screws (are specified by shooters) connections of a radiator with a heater.
10. To take a heater radiator.
11. To remove the branch pipes directing to air to a back part of salon (in the drawing – sealing rings of round section on branch pipes).
12. To unscrew the screw of the holder of system of heating on the console.
13. To remove heating knot.

Installation

PERFORMANCE ORDER
For installation of system of heating it is necessary to perform operations in the return sequence in relation to removal process. It is necessary to remember installation of new sealants, a dolivaniye of cooling liquid in the cooling system (to necessary level) and removal of air from system.