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Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
6 Operation
83054802 1/2018-07 La
115-228
6.10.21 O2 sensor heating capacity
Param & Display
O2 module
Process Data
QGO HeatingLoad
Parameter
QGO HeatingLoad
shows the current heating capacity.
The percentage display indicates the impulse / pause ratio based on 2 seconds.
60 % corresponds to 1.2 seconds impulse ad 0.8 seconds pause.
Heat capacity
Start capacity up to 100 °C
approx. 13 %
Heat-up process
approx. 60 %
At operating temperature
approx. 17 %
6.10.22 O2 sensor wear and tear
Param & Display
O2 module
Process Data
QGO Resistance
Parameter
QGO Resistance
shows the internal resistance of the O
2
sensor.
The internal resistance changes during the course of the operation. With an internal
resistance of less than 5 Ω or greater than 150 Ω the sensor is subject to aging. If
the parameter shows an internal resistance of 0 Ω, the W-FM has not yet carried
out the sensor test.
Sensor test
The W-FM carries out a sensor test every 23 hours. The O
2
content must be con-
stant for the test, e. g. in pre-purge or at a static load. If a constant O
2
content is
not achieved within 24 hours, the W-FM freezes the load and carries out the test. If
the burner is in standby, the W-FM carries out the test at the next burner start.
6.10.23 Activate / deactivate O2 controller
Operation
O2Ctrl activate
deactivated
activated
Parameter
O2Ctrl activate
activates or deactivates the O
2
controller manu-
ally.