GF83.70-W-2002A | "End heater operation", function | 30.8.96 |
MODEL 950, 952, 953, 954 with CODE (H64) Hot water auxiliary heater "Eberspächer" D9W
W83.70-0017-09
1 Timer
2 Control module
3 Glow pin
4 Temperature sensor
5 Burner
6 Heat exchanger
7 Overheating sensor
V Combustion air
A Exhaust
KE Coolant inlet
KA Coolant outlet
KS Fuel
8 Coolant circulation pump
9 Burner housing
10 Flame sensor
11 Combustion air blower
12 Exhaust line with muffler
13 Combustion air line
14 Fuel metering pump
15 Automatic heater control panel
Function sequence
The auxiliary heater can be shut off:
- Manually with the timer (1) for the auxiliary heater
- By the control module (2) when the maximum temperature is exceeded
The heater is operating in the partial load or full load range.
The heater is switched to the cooling phase with shut-off delay:
- The fuel supply and therefore the combustion is interrupted immediately by switching off the fuel metering pump (14).
- The combustion air blower (11) continues to run cooling the combustion chamber and flushing out any combustion gases.
Referenced documents
- gf8370w3030a "End heater operation upon exceeding cut-off threshold in partial load operation", function
- gf8370w3031a "End heater operation by switching off in full or partial load operation", function
- gf8370w3032a "End heater operation by switching off during controlled shut-off phase", function