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Exhaust duct
46
WARNING: Danger of toxic fumes.
Gas cooking appliances release car‐
bon monoxide that can be harmful or
fatal if inhaled.
To reduce the risk of fire and to prop‐
erly e
xhaust air, the exhaust gases
extracted by the hood should be
vented outside of the building only.
Do not vent exhaust air into spaces
within walls or ceilings or in attics,
cr
awl spaces or garages.
To reduce the risk of fire, only use
metal ductwork.
Please read and follow the "IMPOR‐
T
ANT SAFETY INSTRUCTIONS" to
reduce the risk of personal injury.
Follow all local building codes when
installing the hood.
Only use smooth pipes or flexible
duct hoses made from non-flamma‐
ble materials for exhaust ductwork.
T
o achieve the greatest possible air
extraction with the lowest noise lev‐
els, please note the following:
– The diameter of the exhaust duct
should not be less than 6" (150 mm).
– If flat exhaust ducts are used, the
cross section should not be smaller
than that of the exhaust connector.
– The exhaust duct should be as short
and str
aight as possible.
– If elbows are needed, make sure they
have
a large radius.
– The exhaust duct itself must not be
kin
ked or compressed.
– Make sure that all connections are
secu
re and airtight.
Remember that any constriction of
the airflow will reduce extraction per‐
formance and increase operating
noise.
If the e
xhaust duct is to be routed
through an outside wall, we recom‐
mend installing a telescopic wall vent
or a rooftop vent (available as an op‐
tional accessory).
If the e
xhaust air is to be conducted
into a vent flue, the intake piece must
be aligned with the flow direction of
the flue.
When insta
lling the exhaust duct hor‐
izontally, you must slope it away from
the source by at least 1 cm per meter
(³/₈" per 3 ¹/₄"). This ensures that
condensate cannot drain back into
the ventilation hood.
If the e
xhaust duct is to be routed
through rooms, ceiling space etc., the
temperatures in these different areas
may differ greatly, which means that
the problem of condensation will
need to be addressed. The exhaust
duct will need to be insulated.