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
89-196
2. 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 %
3. Optimise O
2
content at min. load
A correction is not necessary, if the O
2
content is within the permissible range.
Min load
O
2
content
Natural Gas
4.0 … 6.0 %
Liquid Petroleum Gas
4.3 … 6.3 %
Repeat procedure for min load.
Carry out flue gas measurement, enter values in the test sheet of the engineers
report.
Select
and confirm.
The message
output measurement completed
appears briefly.
Display changes to menu
Service WTC
.
