Inspection/Cleaning/Maintenance; Replacing Fuses - Viessmann VITOLIGNO 300-C Operating Instructions Manual

Maintenance

Inspection/Cleaning/Maintenance

Cleaning
You can clean the surface of the programming unit with
a microfiber cloth. All equipment can be cleaned with
a commercially available domestic cleaning agent (non-
scouring).
Inspection and maintenance
Inspection and maintenance of your heating system is
recommended.
Regular maintenance ensures trouble free, energy
efficient, environmentally responsible and safe heating.
Your heating system must be serviced by an authorised
contractor at least every 2 years. For this, we 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 reason, all boilers should be cleaned annually.
DHW tank
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 tank and the DHW connections.
Refill any water treatment equipment (e.g. water softener
or water filtration unit) on time, if such equipment is
installed in the cold water supply of the DHW tank.
Observe the manufacturer's instructions.

Replacing Fuses

44
Safety valve (DHW tank)
The safety valve function should be checked every six
months by venting, either by the system user or the
local heating contractor. The valve seat may become
contaminated (see the valve manufacturer's instructions).
Potable water filter (if installed)
To maintain high hygienic standards, proceed as follows:
H Replace filter element on non-back flushing filters every
six months (visual inspection every two months).
H On back flushing filters, back flush every two months.
WARNING
Contact with 'live' components of the control unit can
lead to fatal injury due to electric shock. Only a heating
contractor may replace fuses/MCBs.
Vitoligno 300-C Operating