American Dryer Corp. Wet Wash ML-79 - Manual (Page 19)

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2. Single Dryer Venting
Where possible, it is suggested to provide a separate exhaust duct for each dryer. The exhaust duct should be
laid out in such a way that the duct work travels as directly as possible to the outdoors with as few turns as
possible. It is suggested that the use of 90º turns in the ducting be avoided; use 30º or 45º angles instead. The
shape of the exhaust duct work is not critical so long as the minimum cross section area is provided.
IMPORTANT: Minimum duct size for dryer is 10 inches for a round duct or 9” x 9” for a square duct.
The duct size must not be reduced anywhere down stream of the dryer.
IMPORTANT: Exhaust back pressure measured by a manometer at each basket (tumbler) exhaust
duct area should not exceed .3 inches of water column.