12 Inspection and maintenance
36
Installation and maintenance instructions Energy
7
0020300877_01
12 Inspection and maintenance
12.1
Using original seals
If you replace components, use only the enclosed original
seals; additional sealing materials are not required.
12.2
Observing inspection and maintenance
intervals
▶
Adhere to the minimum inspection and maintenance in-
tervals. The inspection may require maintenance to be
carried out earlier, depending on the results.
–
Inspection and maintenance work (
→
Appendix)
12.3
Checking the CO
₂
content
1.
Start up the product with the check programme
(P.01)
and set the value.
–
Setting value for the programme P.01: 100
Check programmes
–
Overview (
2.
Wait until the value that is read is stable.
–
Waiting period for reading a stable value: 5 min
1
3.
Unscrew the cover from the flue gas analysis point
(1)
.
4.
Measure the CO
₂
content at the flue gas analysis point
(1)
.
5.
Compare the measured value with the corresponding
value in the table.
Great Britain and Ireland
Removed front casing /
installed front casing
Natural gas
H
9.2
±
1%
◁
The value is OK.
▽
The value is not OK; you cannot start up the
product.
▶
Set the CO
₂
content.
12.4
Setting the CO
₂
content
Condition
: The CO
₂
content must be adjusted
1
A
B
▶
Remove the sticker.
▶
Turn the screw
(1)
to set the CO
₂
content (value with
front casing removed).
◁
To increase the CO
₂
content: Turn anti-clockwise
◁
To decrease the CO
₂
content: Turn clockwise
▶
Only carry out the adjustment in increments of 1/8 turn
and wait approximately 1 minute after each adjustment
until the value stabilises.
▶
Compare the measured value with the corresponding
value in the table.
Great Britain
and Ireland
Removed
front cas-
ing/installed
front casing
Natural gas H
CO
₂
at full load
9.2
±
1%
Set for Wobbe in-
dex W
₀
14.09 kW
⋅
h/m
³
O
₂
at full load
4.5
±
1.8 vol. %
CO at full load
≤
250 ppm
CO/CO
₂
≤
0.0027
▽
If the setting is not in the specified adjustment range,
you must not start up the product.
▶
Inform Customer Service.
▶
Check whether the requirements regarding air pollution
control and/or CO have been complied with.
▶
Install the front casing.
12.5
Removing the gas-air mixture unit
Note
The gas-air mixture unit consists of three main
components:
–
Fan
–
Gas valve assembly
–
Burner hood