Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
6 Operation
83054802 1/2018-07 La
111-228
6.10.9 Define temperature sensor
Param & Display O2 module Configuration SupAirTempSens
FueGasTempSens
Parameter SupAirTempSens is used to define the combustion air sensor fitted
[ch.3.3.24].
Select Pt1000 in conjunction with CO control.
The flue gas sensor fitted is defined in parameter FueGasTempSens, see
[ch.3.3.23].
The sensors have no influence on O2 trim, they are used to calculate combustion
efficiency.
6.10.10 Flue gas temperature warning threshold
Param & Display O2 module Configuration MaxTempFlGasGas
MaxTempFlGasOil
Parameter MaxTempFlueGas… determines a warning threshold for the flue gas
temperature. A flue gas temperature sensor has to be fitted for this function
[ch.3.3.23].
The threshold is determined separately for oil and gas. Set the threshold approx.
20% above the maximum flue gas temperature measured during commissioning
[ch.6.10.19].
CAUTION
Damage to the O2 sensor caused by overheating
Flue gas temperature above 300°C can damage the O2 sensor.
Avoid flue gas temperatures above 300°C at the O2 sensor.
If the flue gas exceeds the temperature set, a message appears in the ABE.
The warning indicates an increased flue gas loss, the heat exchanger should be
cleaned.
CO function
In conjunction with the CO function the input of the combustion air sensor is used
for signal evaluation [ch.6.11].
For the signal evaluation an apparent intake air temperature of up to 730 ° C is
generated. To ensure that the W-FM does not detect implausible values, the warn-
ing threshold in conjunction with the CO function must be set to 850 °C in para-
meter FlueGas… .
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