2
General information
Safety instructions
Please follow these safety instructions closely to prevent accidents and
material losses.
Work on the equipment
Installation, initial start-up, inspection,
maintenance and repairs must only
be carried out by a competent
person (heating engineer/installation
contractor).
Before working on the equipment/
heating system, isolate the mains
electrical supply (e.g. by removing a
separate mains fuse or by means of
a mains electrical isolator) and
safeguard against unauthorised
reconnection.
Close the main gas shut-off valve
and safeguard against unauthorised
reopening.
Work on gas equipment
This must only be carried out by an
approved contractor.
Please observe all commissioning
work for gas installations specified
acc. to TRGI or TRF, or local
regulations.
Repair work
It is not permitted to carry out repairs
on parts that fulfil a safety function.
Use only original Viessmann spare
parts, or equivalent parts that have
been approved by Viessmann.
Initial start-up
The initial start-up must be carried
out by the system installer or a
designated commissioning engineer;
all actual values should be recorded
in a commissioning/service report.
Instructing the system user
The system installer must hand the
operating instructions to the system
user and instruct him/her in the
operation of the system.
¨ĂSafety instruction
In this instruction manual, this
heading denotes information which
must be observed to prevent
accidents and material losses.
¨Ă This symbol denotes important
information which must be
observed to prevent material
losses.
Applicability
From serial no.
7174931Ă3Ă00001Ăkkk, 7174932Ă3Ă00001Ăkkk, 7174933Ă3Ă00001Ăkkk and
7174934Ă3Ă00001Ăkkk
5692Ă534ĂGB
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