Maintenance; Inspection/Cleaning/Maintenance; Cleaning; Inspection And Maintenance - Viessmann vitocrossal 300 Operating Instructions Manual

Vitocrossal 300 CU3A 26 to 57 Operating

Inspection/Cleaning/Maintenance

Cleaning

All equipment can be cleaned with a commercially
available domestic cleaning agent (non-scouring).
Clean the surface of the programming unit with the
microfibre cloth provided.

Inspection and maintenance

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.
Additionally for a Vitocell 100:
We recommend that the correct function of the sacrificial
anode is checked annually by your heating contractor.
The anode function can be checked without interrupting
the system operation. The heating contractor will
check the earth current with an anode tester.

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.

Maintenance

37