Checking The Combustion Quality - Viessmann Vitodens 100-W B1HF Series Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Checking the combustion quality

The electronic combustion controller automatically
ensures optimum combustion quality. During commis-
sioning/maintenance, only the combustion values need
to be checked. To do this, test the CO content and CO
or O content, and record these in the report on
2
page 97.
Permissible CO content
The CO content must be < 1000 ppm for all gas types.
Permissible CO or O
2
Operation with natural gas
Rated heating out- CO
put (kW)
Upper heating out-
put
11 7.3 - 10.5
19 7.5 - 10.5
25 7.5 - 10.5
32 7.3 - 10.0
Operation with LPG
■ CO content: 8.4 - 11.8 %
2
■ O content: 3.1 - 8.1 %
2
If the actual CO, CO or O
2
respective ranges, proceed as follows:
■ Check the balanced flue system for leaks; see
page 44.
■ Check the ionisation electrode and connecting cable,
see page 48.
Note
During commissioning, the combustion controller car-
ries out an automatic calibration. Allow approx. 50 s
after the burner has started before testing the emis-
sions.
1. Connect a flue gas analyser at flue gas port
the boiler flue connection.
2. Open the gas shut-off valve. Start the boiler. Cre-
ate a heat demand.
3. Adjust the lower heating output. See the following
chapter.
4. Check the CO content. If the actual value deviates
2
from the permissible ranges, implement steps lis-
ted above.
5. Enter the actual value into the report.
54
content
2
content (%)
2
Lower heating out-
put
7.3 - 10.5
7.5 - 10.5
7.5 - 10.5
7.3 - 10.5
values lie outside their
2
A
Note
To prevent operating faults and damage, operate the
appliance with uncontaminated combustion air.
2
O content (%)
2
Upper heating out-
put
2.1 - 7.9
2.1 - 7.6
2.1 - 7.6
3.1 - 7.9
Fig. 39
on 6. Adjust the upper heating output. See the following
chapter.
7. Check the CO
2
from the permissible ranges by more than 1 %,
implement steps listed above.
8. Enter the actual value into the report.
9. Re-seal test port
Danger
Escaping flue gas can damage your health.
Check test port
Lower heating out-
put
2.1 - 7.9
2.1 - 7.6
2.1 - 7.6
2.1 - 7.9
A
content. If the actual value deviates
.
A
A for leaks.