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Exhaust duct
42
WARNING: Danger of toxic fumes.
Gas cooking appliances release
carbon monoxide that can be
harmful or fatal if inhaled.
To reduce the risk of fire and to
pr
operly exhaust 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
TANT SAFETY
INSTRUCTIONS" to reduce the risk
of personal injury. Follow all local
building codes when installing the
hood.
Only use smoo
th pipes or flexible
duct hoses made from non-
flammable materials for exhaust
ductwork.
T
o achieve the greatest possible air
extraction with the lowest noise
levels, 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 ai
rflow will reduce extraction
performance and increase operating
noise.
If the e
xhaust duct is to be routed
through an outside wall, we
recommend installing a telescopic
wall vent or a rooftop vent (available
as an optional 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
horizontally, you must slope it away
from the source by at least ³/₈" per
3 ³/₈" (1 cm per meter). This ensures
that condensate cannot drain back
into the ventilation hood.
If the exhaust 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.