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Exhaust ducting
If the cooker hood is used at the
same time as a heating appliance
that relies on oxygen from the same
room, there is a risk of toxic fumes.
It is essential that the "Warning and
Safety" instructions are observed.
Seek approval from the building in-
spector where necessary in order to
ensure safe operation.
The cooker hood has an exhaust con-
nection of 222 x 89 mm.
Use smooth pipes or flexible ducting
made from non-flammable materials
for vent ducting.
To achieve the most efficient air ex-
traction with the lowest noise levels,
please note the following:
– The cross-section of the vent ducting
must not be smaller than the cross-
section of the exhaust connection
(see "Appliance dimensions").
– The vent ducting should be as short
and straight as possible.
– Only use wide radius bends.
– The vent ducting must not be kinked
or compressed.
– Ensure that all connections are
strong and airtight.
Remember that any constriction of
the air flow will reduce extraction
performance and increase operating
noise.
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If the exhaust air is to be ducted into
a flue, the ducting must be directed in
the flow direction of the flue.
If ducting is to be laid horizontally it
must be laid with a downwards slop-
ing gradient. This is to ensure that
condensate cannot drain back into
the extractor.
If the vent ducting is to run through
rooms, ceiling space, etc. there may
be great variations in temperature
between the different areas. The
problem of condensation will need to
be addressed. The vent ducting will
need to be suitably insulated.
Stick the supplied sealing strip on the
exhaust connection if the ducting
does not sit securely up against the
exhaust connection.
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