Cleaning; Inspection And Maintenance - Viessmann VITODENS 111-W Operating Instructions Manual

Cleaning

All appliances 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 Ordinance [EnEV -
Germany] and the DIN 4755, DIN 1988-8 and EN 806
standards.
Regular maintenance ensures trouble-free, energy effi-
cient and environmentally responsible heating opera-
tion. For this, we strongly advise you to arrange an
inspection and maintenance contract with your heating
contractor.
Boiler
Increasing boiler contamination raises the flue gas
temperature and thereby increases energy losses. All
boilers should therefore be cleaned annually.
Logbook
Please ensure that you have a Logbook supplied with
your appliance. This Logbook should be completed by
your installer to verify that the correct installation and
commissioning procedure was followed.
Failure to complete the Logbook may result in difficul-
ties should a problem arise with your appliance during
the guarantee period. This Logbook forms part of the
industry's Benchmark code of practice for the installa-
tion, commissioning and servicing of central heating
systems.
All Gas Safe Registered Installers carry a ID card and
have a registration number. Both should be recorded in
your Logbook. You can check your installer is Gas
Safe registered by calling GasSafe register on +44
(0)800 408 5500 or visit the website www.gassafer-
egister.co.uk
Drinking water filter (if installed)
Further information can be found in chapter
"Terminology" in the appendix.
For reasons of good hygiene
■ replace filter element on non-backwashing filters
every 6 months (visual inspection every 2 months),
on backwashing filters, backwash every 2 months.
■
Maintenance
19