39
The appliance may be cleaned with a
commercially available domestic clean-
ing agent (non-scouring).
Water hardness
For areas with a water hardness
> 450 milligrams per litre we recom-
mend the use of a water softening sys-
tem.
Consult your heating contractor.
Inspection and maintenance
Regular maintenance ensures trouble-
free, energy efficient, environmentally
responsible and safe heating. We rec-
ommend you have your heating system
serviced by an authorised contractor at
least every 2 years. For this, it is best to
arrange an inspection and maintenance
contract with your local heating contrac-
tor.
Device
Increased contamination raises the flue
gas temperature and thereby increases
energy losses. We recommend the
appliance be cleaned annually.
Maintenance
Cleaning
5837147
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