Viessmann VITODENS 111-W Installation And Service Instructions Manual page 3

Safety instructions
!
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 discharge static
loads.
Repair work
!
Please note
Repairing components that fulfil a
safety function can compromise
the safe operation of the sys-
tem.
Replace faulty components only
with genuine Viessmann spare
parts.
Auxiliary components, spare and
wearing parts
!
Please note
Spare and wearing parts that
have not been tested together
with the system can compromise
its function. Installing non-author-
ised components and making
non-approved modifications or
conversions can compromise
safety and may invalidate our
warranty.
For replacements, use only orig-
inal spare parts supplied or
approved by Viessmann.
(cont.)
Safety instructions for operating the
system
If you smell gas
If you smell flue gas
Safety instructions
Danger
Escaping gas can lead to explo-
sions which may result in serious
injury.
■ Never smoke. Prevent naked
flames and sparks. Never
switch lights or electrical appli-
ances on or off.
■ Close the gas shut-off valve.
■ Open windows and doors.
■ Evacuate any people from the
danger zone.
■ Notify your gas or electricity
supply utility from outside the
building.
■ Have the power supply to the
building shut off from a safe
place (outside the building).
Danger
Flue gas can lead to life threat-
ening poisoning.
■ Shut down the heating system.
■ Ventilate the installation site.
■ Close doors to living spaces to
prevent flue gases from
spreading.
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