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Vitodens 100-W, B1HE/B1KE Combi Installation/Service
Service
Checking the Combustion Quality
Permissible CO
2
or O
2
content
Operation with natural gas
CO2 content: 6.9 - 11%
O2 content: 2.1 - 8.4%
Operation with LPG
CO2 content: 8.3 - 12.4%
O2 content: 2.1 - 8.4%
The CO emmissions shall not exceed 400 ppm within the
specified range.
If the actual CO
2
or O
2
values are outside their
respective ranges, proceed as follows:
Check the flue system for leaks; see page 49.
Check the ionization electrode and connecting cable;
see page 51.
Note:
During commissioning, the combustion controller
carries out an automatic calibration. Allow approx.
50 sec after the burner has started before testing
the emissions.
1. Connect a flue gas analyzer at flue gas port
A
on
the boiler flue connection.
2. Open the gas shut-off valve. Start the boiler. Create
a call for heat.
3. Set the lower heating output. See the following
chapter.
4. Check the CO
2
content. If the actual value deviates
from the permissible ranges, implement steps listed
above.
5. Enter the value into the report.
6. Set the upper heating output. See the following
chapter.
7. Check the CO
2
content. If the actual value deviates
from the permissible ranges by more than 1%,
implement steps listed above.
8. Enter the value into the report.
9. Re-seal test port
A
.
The electronic combustion controller automatically ensures
optimum combustion quality.
During commissioning/maintenance, only the combustion
values need to be checked. To do this, test the CO content
and CO
2
or O
2
content, and record these in the report on
page 99.
Note:
To prevent operating faults and damage, operate
the boiler with uncontaminated combustion air.
WARNING
Escaping flue gas can damage your health.
Check test port
A
for leaks.
The Vitodens 100-W is factory set for operation with
natural gas.
A CO
2
measurement (see page 60) must be taken before
and after working on gas boilers to eliminate health risks
and to guarantee the satisfactory condition of the system.
Record the measured combustion values in the sequence
stated in the Maintenance Record on page 99 in this
manual.
IMPORTANT
