Viessmann Vitovalor PA2, Operating Instructions Manual

Page: 4 / 44

4
If you smell flue gas
Danger
Flue gas can lead to life threatening
poisoning.
■
Shut down the heating system.
■
Ventilate the installation site.
■
Close all doors in the living space.
If there is a fire
Danger
Fire presents a risk of burns and
explosion.
■
Shut down the heating system.
■
Close the shut-off valves in the
fuel supply lines.
■
Use a tested fire extinguisher,
class ABC.
What to do if water escapes from the
appliance
Danger
If water escapes from the appliance
there is a risk of electric shock.
■
Switch off the heating system at
the external isolator (e.g. fuse
box, domestic distribution board).
■
Notify your heating contractor.
If the heating system develops a fault
Danger
Fault messages indicate faults in
the heating system. If faults are not
rectified, they can have life threat-
ening consequences.
Do not acknowledge fault mes-
sages several times in quick suc-
cession. Inform your heating con-
tractor so the cause can be ana-
lysed and the fault rectified.
Installation room requirements
Danger
Sealed vents result in a lack of
combustion air. This leads to incom-
plete combustion and the formation
of life threatening carbon monoxide.
Never cover or close existing vents.
Do not make any subsequent modi-
fications to the building characteris-
tics that could affect safe operation
(e.g. cable/pipework routing, clad-
ding or partitions).
Danger
Easily flammable liquids and mate-
rials (e.g. naphtha/petrol, solvents,
cleaning agents, paints or paper)
can cause deflagration and fire.
Never store or use such materials
in the boiler room or in direct prox-
imity to the heating system.
!
Please note
Incorrect ambient conditions can
lead to heating system damage and
can put safe operation at risk.
■
Ensure ambient temperatures are
above 0 °C and below 35 °C.
■
Prevent air contamination by halo-
genated hydrocarbons (e.g. as
contained in paints, solvents or
cleaning fluids) and excessive
dust (e.g. through grinding/polish-
ing work).
■
Avoid continuously high humidity
levels (e.g. through continuous
drying of washing).
Extractors
The operation of appliances that extract
air to the outside (cooker hoods, extrac-
tors, air conditioning units, etc.) can cre-
ate negative pressure. If the boiler is
operated at the same time, this can lead
to a reverse flow of flue gas.
Safety instructions
For your safety
(cont.)
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