Operating instructions

46
Note
Operate the appliance with uncontaminated combustion air to prevent operating
faults and damage.
CO
2
or O
2
content
■ The CO
2
content must be within the following limits (upper and lower output):
– 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
2
content must be between 4.4 % and 6.9 %.
If the actual CO
2
or O
2
values lie outside their respective ranges, proceed with the
following steps:
■ Checking the balanced flue system for tightness, see page 33.
■ Checking the ionisation electrode and connecting cable, see page 36.
Note
During commissioning, the combustion controller carries out an automatic calibration.
Only test the emissions approx. 30 s after the burner has started.
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 47).
4. Check the CO
2
content. Should the
actual value deviate from the above
ranges by more than 1 %, implement
steps from page 45.
5. Enter actual values into the service
report.
6. Select the upper output (see
page 47).
7. Check the CO
2
content. Should the
actual value deviate from the above
ranges by more than 1 %, implement
steps from page 45.
8. After testing, press OK.
9. Enter actual values into the service
report.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5457 552 GB