3
If you smell flue gas
Danger
Flue gas can lead to life-
threatening poisoning.
■ Shut down the heating system.
■ Ventilate the boiler room.
■ Close all doors leading to the
living space.
Working on the system
■ When using gas as fuel, also close the
main gas shut-off valve and safeguard
against unauthorised reopening.
■ Isolate the system from the power
supply and check that it is no longer
'live', e.g. by removing a separate fuse
or by means of a main isolator.
■ Safeguard the system against
unauthorised reconnection.
!
Please note
Electronic modules can be
damaged by electro-static
discharges.
Touch earthed objects, such as
heating or water pipes, to
discharge static loads.
Repair work
!
Please note
Repairing components which
fulfil a safety function can
compromise the safe operation of
your heating system.
Replace faulty components only
with original Viessmann spare
parts.
Ancillary components, spare and
wearing parts
!
Please note
Spare and wearing parts which
have not been tested together
with the heating system can
compromise its function.
Installing non-authorised
components and non-approved
modifications/conversion can
compromise safety and may
invalidate our warranty.
For replacements, use only
original spare parts from
Viessmann or those which are
approved by Viessmann.
Safety instructions
Safety instructions
(cont.)
5692 798
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