40
If the actual CO, CO
2
or O
2
values lie outside their
respective ranges, proceed as follows:
■
Check the balanced flue system for leaks; see
page 33.
■
Check the ionisation electrode and connecting cable,
see page 36.
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.
A
Fig. 27
1.
Connect a flue gas analyser at flue gas port
A
on
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
2
content. If the actual value deviates
from the permissible ranges, implement steps lis-
ted above.
5.
Enter the actual value into the report.
6.
Adjust 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 actual value into the report.
9.
Re-seal test port
A
.
Danger
Escaping flue gas can damage your health.
Check test port
A
for leaks.
Regulating to the upper/lower heating output
Note
Ensure adequate heat transfer.
Tap the following buttons:
1.
and
OK
simultaneously for approx. 4 s, then
release.
2.
Use
/
to select
"b.6"
for the upper/lower
heating output.
3. OK
4.
Use
/
to set the value.
"0"
- OFF
"1"
- Min. heating output
"2"
- Max. heating output
5. OK
Burner is operating with correspondingly adjusted
heating output.
Checking the flue system for unrestricted flow and leaks
Matching the control unit to the heating system
The control unit must be matched to the system equip-
ment level.
Set the parameters according to the accessories fitted:
Accessories installation and service instructions
Commissioning, inspection, maintenance
Checking the combustion quality
(cont.)
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