Cleaning; Inspection And Maintenance - Viessmann VITODENS Operating Instructions Manual

Cleaning

All devices may be cleaned with a
commercially available domestic
cleaning agent (non-scouring).

Inspection and maintenance

Inspection and maintenance of your heating system is prescribed by the Energy
Savings Order [Germany] and the standards DIN 4755 and DIN 1988-8 (check
local regulations).
Regular maintenance ensures trouble-free, energy-efficient and environmen-
tally responsible heating operation. For this, we strongly advise you to arrange
an inspection and maintenance contract with your local heating contractor.
Boiler
Increasing boiler contamination raises
the flue gas temperature and thereby
increases energy losses. For that rea-
son, all boilers should be cleaned
annually.
DHW cylinder
DIN 1988-8 and EN 806 prescribe that
maintenance and cleaning should be
carried out no later than two years
after commissioning and, thereafter,
as required. Only a recognised heat-
ing contractor should clean the inside
of a DHW cylinder including the DHW
connections.
Refill any water treatment equipment
(e.g. a lock or injection equipment) in
good time, if such equipment is
installed in the cold water supply of
the DHW cylinder. Observe the manu-
facturer's details.
For Vitoplus 300, inspection and
maintenance must be carried out
annually by a heating contractor.
In addition for Vitocell 100:
We recommend that the correct func-
tion of the sacrificial anode is checked
annually by your heating contractor.
The anode function can be checked
without interrupting system operation.
The heating contractor will check the
earth current with an anode tester.
Repairs
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