Viessmann Vitodens 100 Series Installation And Service Instructions Manual page 3

Safety instructions
Safety instructions for working on the system
Working on the system
■ Where gas is used as the fuel, close
the main gas shut-off valve and safe-
guard it against unintentional reopen-
ing.
■ Isolate the system from the power
supply, e.g. by removing the separate
fuse or by means of a mains isolator,
and check that it is no longer live.
■ Safeguard the system against recon-
nection.
■ Wear suitable personal protective
equipment when carrying out any
work.
Danger
Hot surfaces and fluids can lead
to burns or scalding.
■ Before maintenance and serv-
ice work, switch OFF the
appliance and let it cool down.
■ Never touch hot surfaces on
the boiler, burner, flue system
or pipework.
!
Please note
Electronic assemblies can be
damaged by electrostatic dis-
charge.
Prior to commencing work,
touch earthed objects such as
heating or water pipes to dis-
charge static loads.
(cont.)
Repair work
!
Auxiliary components, spare and
wearing parts
!
Safety instructions
Please note
Repairing components that fulfil
a safety function can compro-
mise the safe operation of the
system.
Replace faulty components only
with genuine Viessmann spare
parts.
Please note
Spare and wearing parts that
have not been tested together
with the system can compro-
mise its function. Installing non-
authorised components and
making non-approved modifica-
tions or conversions can com-
promise safety and may invalid-
ate our warranty.
For replacements, use only orig-
inal spare parts supplied or
approved by Viessmann.
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