"End heater operation", function

GF83.70-W-2002A

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.

	"End heater operation upon exceeding cut-off threshold in partial load operation", function		GF83.70-W-3030A
	"End heater operation by switching off in full or partial load operation", function		GF83.70-W-3031A
	"End heater operation by switching off during controlled shut-off phase", function		GF83.70-W-3032A

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