Air extraction
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.
Important:
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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