Installation and operating instruction
Gas condensing unit WTC-GB 15-B Compact and WTC-GB 25-B Compact
6 Operation
83309302 1/2018-05 La
76-196
6.6.2.3 Combustion
WTC-G ...
Combustion
Parameters
Setting
2.3.1
Gas quantity correction
at start
Changes the gas quantity at ignition.
2.3.2
Load correction at
start
Changes the load (fan speed) at ignition.
2.3.3
Correction speed for
flue gas length
Changes the fan speed across the entire load range.
The air side resistance through long flue gas ducts can be compensated.
2.3.4
Minimum load
correction
The minimum load (fan speed) can be increased in percentage.
2.3.5
Correction gas surge at
start
Changes the gas quantity following flame detection during the safety period.
2.3.6
Gas valve offset
storage
Changes the control signal for the immersion coil of the gas valve.
Variable value, which is re-determined after startup with minimum load.
2.3.7
Maximum flue gas
temperature
If the flue gas temperature exceeds the value set, the burner shuts down
[ch. 3.3.3].
If a plastic flue gas system is connected, which is not approved for flue gas tem-
peratures of up to 120 °C, the value must be reduced accordingly.