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Never connect an exhaust hood to
an active chimney, dryer vent, vent
flue, or room venting ductwork. Seek
professional advice before connect-
ing an exhaust hood vent to an exist-
ing, inactive chimney or vent flue.
Ductwork with a diameter of less
than 6" (150 mm) should only be
used when absolutely necessary. As
duct diameter decreases, the hood's
performance and sound levels will
be affected.
If the ductwork runs through rooms,
ceilings, garages, etc. where tempera-
ture variations exist, it may need to be
insulated to reduce condensation. In
some cases, a condensate trap may
also be required to collect and evapo-
rate any condensate which may occur.
When installing a condensate trap,
ensure that it is positioned vertically
and if possible directly above the ex-
haust outlet.
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