Servicing; Servicing And Maintenance - Viessmann Vitocell 200 Cylinder Design, Installation, User & Servicing Instructions

SERViCiNG

Maintenance
The Registered Installer is responsible for the safe installation and operation of the
system. The installer must also make his customer aware that periodic maintenance
of the equipment is essential for safety.
Maintenance periods will vary for many reasons. Viessmann Ltd recommend a
maximum of 12 months to coincide with boiler maintenance. Experience of local
water conditions may indicate that more frequent maintenance is desirable, eg, when
water is particularly hard, scale-forming or where the water supply contains a high
proportion of solids, eg, sand. Maintenance must include the following:
1. Check and clean filter
2. Manually check the operation of the temperature relief valve.
3. Manually check the operation of the expansion relief valve.
4. Check discharge pipes from temperature and expansion relief valves are free
from obstruction and blockage and are not passing any water.
5. Check the condition and if necessary descale the heat exchangers in hard water
areas.
6. Check that water pressure downstream of pressure reducing valve is within the
manufacturer's limits.
7. Check operation of motorised valve.
8. Check the pressure on the air side of the expansion vessel. This must be done
when the water in the cylinder is cold.
9. Check and advise the householder not to place any clothing or other combustible
materials against or on top of this appliance.
10. On completion of the work, fill in the Service Record part of the Benchmark Log
Book.
iMPORTANT NOTE
When draining down the appliance for any reason, the instructions
provided in the Commissioning Section MUST be followed to prevent
potential damage to the cylinder.
When carrying out the annual service on the appliance/boiler, it is recommended that
with solar appliances, a check is made of the solar system pressure/expansion vessel
charge pressure along with a visual check of the solar panels.
It is recommended that after a maximum of five years, the concentration/quality of
the solar system antifreeze solution is checked and, if necessary, replaced.
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