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7.13. Heating system of front seats

Схема включения обогрева передних сидений
Fig. 7.30. Scheme of inclusion of heating of front seats: 1 – heaters of the left forward sitting; 2 – the switch of a heater of the left forward sitting with a control lamp of inclusion; 3 – relay of inclusion of heaters of front seats; 4 – ignition switch; 5 – assembly block; 6 – the switch of a heater of the right forward sitting with a control lamp of inclusion; 7 – heaters of the right forward sitting; 8 – a safety lock on 16 A; And — to power supplies

On a part of cars the heating system of front seats is installed. The scheme of inclusion of heaters is given in fig. 7.30.
Heaters join switches 2 and 6 (the left and right seat respectively). Temperature regulators of electroheating of a seat are built in heaters. Short circuit of contacts of a temperature regulator happens at a temperature of a surface of a seat (25±5) °C, and disconnection of contacts of a temperature regulator happens when heating to temperature (31±4) °C. The difference of temperatures between short circuit and disconnection of contacts of the built-in temperature regulator has to be not less than 5 °C.