GF83.70-D-2008HF Trigger Heating Mode, Function

GF83.70-D-2008HF Trigger Heating Mode, Function
MODEL 906.111 /113 /131 /133 /135 /153 /155 /211 /213 /231 /233 /235 /253 /255 /611 /613 /631 /633 /635 /637 /653 /655 /657 /711 /713 /731 /733 /735
- with CODE (H12) Warm water auxiliary heater
- with CODE (HY1) Radio remote control for auxiliary heater
- Stationary heater (STH)

MODEL 906.611 /613 /631 /633 /635 /637 /653 /655 /657 /711 /713 /731 /733 /735
- with CODE (HZ5) 10 kW warm water auxiliary heater with timer
- with CODE (HY1) Radio remote control for auxiliary heater
- Stationary heater (STH)

The function requirement is that the fill level of the fuel tank is > 16 l.
When the "On" button on the stationary heater (STH) radio remote control (FFB) is pressed, then STH heater operation of the stationary heater unit is activated with status "circuit 15 OFF" and "circuit 61 OFF", or with status "circuit 15 ON" and "circuit 61 OFF" via the warm water auxiliary heating control unit (N33/3).
With status "circuit 15 ON" and "circuit 61 ON", heater booster (HB) operation of the stationary heater unit is activated via the warm water auxiliary heater control unit. The transmitter integrated into the STH FFB transmits the radio signal to the stationary heater radio signal receiver (A49/4). The stationary heater radio signal receiver evaluates the radio signal and forwards the switch-on signal to the warm water auxiliary heating control unit. The warm water auxiliary heating control unit reads in the switch-on signal and then actuates the following components needed for the particular heater operation of the stationary heater unit:
- Blower motor (N33/3m1) of the STH combustion air blower, for combustion air supply
- Glow pin (N33/3r1), for preheating the combustor with downpipe and for ignition of the fuel
- Metering pump (M46/1), to supply the fuel
- Circulation pump (M13/4), to circulate the coolant

In addition, the warm water auxiliary heating control unit places the message "STH_EIN (STH switched on)" or the message "STH_ZHZ_EIN (heater booster function is activated)" on the Controller Area Network bus class B (interior) (CAN-B) and permanently actuates the red light emitting diode (LED) integrated in the warm water stationary heater switch (S46/11) directly via a discrete line.

The STH FFB has a range of approx. 1 km. External influences such as radio interference, large obstructions, an unfavorable position in relation to the vehicle or using the transmitter within an enclosed room will reduce the effective range.

New USA exhaust emission legislation as of 01/2010:
Operation of the stationary heater is only possible with outside temperatures < 4 °C (39.2 °F).