GF83.70-P-0006QA Stationary Heater (STH), Function

GF83.70-P-0006QA Stationary Heater (STH), Function
- with CODE (228) Stationary heater [209.3 as of 1.6.04]


General information
Prior to starting a journey during the cold season the stationary heater (SH) ensures that:
^ the passenger compartment is preheated,
^ the windows are free of ice and condensation,
^ the engine is preheated.

The use of a stationary heater (SH) helps to reduce:
^ the risk of an accident by providing excellent vision before starting out on a trip,
^ the mechanical wear to the automotive engine associated with a cold start,
^ fuel consumption and at the same time it also helps to preserve environmental resources by cutting down the pollutants in exhaust emissions when starting up a previously heated engine.

The stationary heater (SH) also comprises the stationary ventilation function.

At high ambient temperatures and high interior temperature caused by strong solar radiation this ensures that:
^ the interior is ventilated,
^ stored heat is reduced.

The central component of the stationary heater (SH) is the STH heater unit (A6).
The STH heater unit (A6) comprises all components necessary for generating and exchanging heat.
The STH heater unit (A6) is connected directly to the heater and coolant circuits for the automotive engine and makes use of them together with its own circulation pump to transmit heat.

The fuel supply for the STH heater unit (A6) is mounted to an external STH fuel pump (Y23) in the area of the vehicle fuel tank.

Possible activation modes
The heating mode or stationary ventilation can
^ be preprogrammed via the instrument cluster (A1) or
^ switched on using the STH radio remote control transmitter (A8/3) or
^ the STH switch (N72s12) transmitter.

In the instrument cluster (A1) up to three preselect times can be stored, of which only one can be activated. The multifunction display (A1p13) in the instrument cluster (A1) acts as an indicating instrument in this case.

Heating mode or stationary ventilation is also immediately switched off manually using the STH remote radio control transmitter (A8/3) or the STH switch (N72s12), regardless of the previous type of triggering.
The range of the STH radio remote control transmitter (A8/3) is max. 300 m.