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
Summary of Contents for FS2B
Page 163: ...163 5457 552 GB ...
