Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
6 Operation
83054802 1/2018-07 La
148-228
6.15.6 Temperature compensation
Param & Display
Flue Gas Recircula-
tion
FGR Factor Gas
FGR Factor Oil
The parameter is only effective in operating modes:
TCautoDeact
Temp.comp.
When adjusting the flue gas recirculation, the required recirculation quantity is set
at each load point via the flue gas damper (FGR damper). For the temperature
compensation the combustion manager determines the FGR temperature at the
FGR sensor for each setting of the FGR damper and saves this as the setpoint
value. At the same time the combustion manager calculates a zero curve for the air
damper based on a fictitious flue gas temperature of 0 °C.
If the FGR temperature deviates form the saved value during operation, the W-FM
recalculates the position for the FGR damper.
If the FGR temperature exceeds the value saved, the FGR damper opens further.
The opening angle is stipulated by parameter
FGR MaxPos Fact
, see
If the FGR temperature drops below the value saved, the FGR damper closes fur-
ther. Depending on the FGR temperature, the FGR damper drives to a position in
the setting range between the compound curve and the zero curve and reduces the
recirculated flue gas volume. The position of the zero curve and thus the setting
range can be altered using the
FGR Factor…
.
The smaller the
FGR Factor…
, the greater the setting range and the smaller the
opening angle.
With a factor of 100 % the zero curve remains unchanged.
A factor of 50% halves the opening angle of the zero curve.
Summary of Contents for W-FM 100
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