Operating instructions

If you smell flue gas
Danger
Flue gas may lead to life-threa-
tening pois oning.
&
Shut down the heating sys-
tem.
&
Ventilate the boiler room.
&
Closealldoorsleadingtothe
living space.
Repair work
It is not permitted to carry out repairs
on parts that fulfil a safety function.
Use only origina l Viessmann spare
parts, or equivalent parts that have
been approve d by Viessmann.
Service work on the heating system
&
Isolate the syste m from mains sup-
ply and check that is is no longer
'live', e.g. by removing a separate
fuse or by means of a mains electri-
cal isolator.
&
Safeguard the system against
unauthorised reconnection.
&
When using g as as fuel, also c lose
the main gas shut-off valve and
safeguard against unauthorised
reopening.
Ancillary components, spare and
wearing parts
!
Important information
Components which are not
tested with the heating system,
the installation of non-
approved spare p arts and
unauthoris ed conversion m ay
lead to damage to the heating
system, which may affect their
function and limit our wa rranty.
For conversions or replace-
ments, use only or iginal parts
from Viessmann or tho se spare
parts which are approved by
Viessmann.
Safety instructions (cont.)
3
Safety instructions
5692 548 GB