Maintenance; Cleaning; Inspection And Maintenance; Boiler - Viessmann VITODENS Operating Instructions Manual

Maintenance

Cleaning

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

Inspection and maintenance

The inspection and maintenance of a heating system is prescribed by the
Energy Saving Order [EnEV - Germany] and the DIN 4755, DIN 1988-8 and
EN 806 standards.
Regular maintenance ensures a 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 (if installed)

The DIN 1988-8 and EN 806 specify
that maintenance and cleaning should
be carried out no later than two years
after commissioning and thereafter as
required.
Only a qualified heating contractor
should clean the inside of a DHW
cylinder and the DHW connections.
Refill any water treatment equipment
(e.g. a lock or injection system) in
good time, if such equipment is
installed in the cold water supply of
the DHW cylinder. Observe the manu-
facturer's instructions.
44
Additionally for a 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 the system opera-
tion. The heating contractor will check
the earth current with an anode tester.