Viessmann VITODENS 222-F Installation And Service Instructions Manual page 48

Commissioning, inspection, maintenance
Further details regarding the individual steps
Note
Operate the appliance with uncontaminated combustion air to prevent operating
faults and damage.
CO or O content
2 2
■ The CO content must be within the following limits (upper and lower output):
2
– 7.7 to 9.2 % for natural gas E and LL
– 9.3 to 10.9 % for LPG P
■ For all gas types, the O
If the actual CO or O
2
following steps:
■ Carry out a tightness test of the balanced flue system, see page 35.
■ Check the ionisation electrode and connecting cable, see page 38.
Note
During commissioning, the combustion controller carries out an automatic calibration.
Only test the emissions approx. 30 s after the burner has started.
A
1. Connect a flue gas analyser at flue
gas aperture A on the boiler flue
connection.
2. Open the gas shut-off valve, start the
boiler and create a heat demand.
3. Select the lower output (see
page 49).
48
content must be between 4.4 % and 6.9 %.
2
values lie outside their respective ranges, proceed with the
2
(cont.)
4. Check the CO
2
actual value deviate from the above
ranges by more than 1 %, implement
steps from page 47.
5. Enter actual values into the report.
6. Select the upper output (see
page 49).
7. Check the CO
2
actual value deviate from the above
ranges by more than 1 %, implement
steps from page 47.
8. After testing, press OK.
9. Enter actual values into the report.
content. Should the
content. Should the