Installation and operating instruction
Gas condensing unit WTC-GB 15-B Compact and WTC-GB 25-B Compact
7 Commissioning
83309302 1/2018-05 La
115-196
22. Optimise O
2
content at max. load
A correction is not necessary, if the O
2
content is within the permissible range.
Max load
O
2
content
Natural Gas
4.5 … 5.5 %
Liquid Petroleum Gas
4.8 … 5.8 %
Check combustion and if necessary optimise O
2
content.
If the O
2
content deviates from the permissible range:
Press dial knob.
Selected area is highlighted in blue.
Correct O
2
content and confirm.
Check O
2
content.
Repeat procedure until the O
2
content lies within the permissible range.
If the O
2
content lies within the permissible range:
Carry out flue gas measurement, enter values in the test sheet of the engineers
report.
Select
and confirm.
Settings are applied.
Flue gas measurement P min
starts.
Flue gas measurement P max
Current capacity
Boiler temperature
54 °C
100 %
O2 correction total
0.0 %
SCOT base value
80
SCOT actual value
78
Gas valve
45 %
Flue gas measurement P min
Applying settings - please wait
Flue gas measurement P min
Current capacity
Boiler temperature
47 °C
18 %
O2 correction up to
50%
0.0 %
SCOT base value
80
SCOT actual value
42
Gas valve
36 %