Viessmann VITODENS 300 WB3A, Service Instructions Manual

Page: 18 / 148

Please follow these safety instructions closely to prevent accidents and
material losses.
Safety instructions explained
Danger
This symbol warns against the
risk of injury.
!
Important information
This symbol warns against the
risk of material losses and
environmental pollution.
Note
Details identified by the words "Note"
contain additional information.
Warranty
All warranty rights are void if these
service instructions are not observed.
Target group
These service instructions are exclu-
sively designed for qualified person-
nel.
Work on gas equipment must only be
carried out by a registered gas fitter.
Only approved contractors may mod-
ify this equipment for countries other
than those designated on the type
plate. That contractor will then
arrange for the relevant approval in
that country.
Electrical work must only be carried
out by a qualified electrician.
The system must be commissioned by
the system installer or a qualified per-
son authorised by the installer.
Regulations
Observe the following during service
work:
& all legal instructions regarding the
prevention of accidents,
& the TRGI, TRF and special regula-
tions, e.g. those of the BDH,
& all legal instructions regarding
environmental protection,
& the Code of Practice by relevant
trade associations and all local reg-
ulations.
If you notice a smell of gas
Danger
Escaping gas can cause explo-
sions which may lead to ser-
ious injury.
& Do not smoke. Prevent
naked flames and sparks.
Never switch electrical lights
or equipment.
& Open windows and doors.
& Close the gas shut-off valve.
& Remove all personnel from
the danger zone.
& Observe the safety regula-
tions of your local gas sup-
plier which can be found on
the gas meter.
& Notify your heating contrac-
tor from outside the building.
Safety instructions
2
Safety instructions
56
92
550
GB