13 | Maintenance
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13
Maintenance
13.1 Maintenance notes
Notes on gas devices
n
According to the specified standards, the gas components must be serviced
at least once a year.
n
If maintenance or repair work has been carried out on gas devices, observe
the following instructions:
– Check that the compensation hose is fitted correctly.
– Perform a leak test on the gas-carrying parts.
– Perform a flue gas analysis.
13.2 Replacing air filters
If the air filter is dirty, a service message and request to change the air filter ap-
pears on the device display. Air filters should be cleaned monthly.
Notes for changing the air filter
Air filters may be replaced by the end user. When changing, make sure that the
new air filter engages carefully in the correct position. Follow the instructions in
the original operating instructions in the Maintenance chapter.
Air filter item numbers
Unit size
XS
6 half size - 10 full
size
20 half size - 20 full
size
Air filter item num-
ber
40.04.771
40.05.424
40.05.654
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