12 American Dryer Corp. 113546-2
NOTE: When the exhaust ductwork passes through a wall,
ceiling, or roof made of combustible materials, the opening
must be 2-inches (5.08 cm) larger than the duct (all the way
around). The duct must be centered within this opening.
As per the National Fuel Gas Code, “Exhaust ducts for type
2 clothes dryers shall be constructed of sheet metal or other
noncombustible material. Such ducts shall be equivalent in
strength and corrosion resistance to ducts made of
galvanized sheet steel not less than 26 gauge
(0.0195-inches [0.50 mm]) thick.”
The ductwork for this appliance must be suitable for the
appliance category in accordance with national installation
regulations of the country of destination.
Outside Ductwork Protection
To protect the outside end of the horizontal ductwork from the
weather, a 90° elbow bent downward should be installed where
the exhaust exits the building. If the ductwork travels vertically
up through the roof, it should be protected from the weather
by using a 180° turn to point the opening downward. In either
case, allow at least twice the diameter of the duct between
the duct opening and the nearest obstruction (refer to the
diagram).
Exhaust Transition Piece
This dryer is equipped with a 12-inch to 10-inch exhaust
transition piece installed, for use with 10-inch ducting. If the
exhaust duct size needs to be increased to 12-inch dia (or
greater) this 12-10 transition should be removed.
IMPORTANT: A minimum exhaust duct size of 10-inches
(25.40 cm) must be used.
Do not use screens, louvers, or caps on the outside
opening of the exhaust ductwork.
Horizontal Single Dryer Venting
For a 10-inch (25.40 cm) horizontal run the total length of
ductwork from the dryer outlet must not exceed dimension
“A” in the following illustration.
HORIZONTAL SINGLE DRYER VENTING
10-INCH (25.40 CM) DUCTING
NOTE 1: When passing through combustible material the opening must be
2-inches (5.08 cm) larger than the duct (all the way around). The duct must be
centered within this opening.
If the length of the duct run or quantity of elbows used exceeds
the above noted specifications, the cross-sectional area of
the ductwork may need to be increased.
IMPORTANT: For extended ductwork runs, the cross
section area of the ductwork can only be increased to an
extent. When the ductwork approaches the maximum limits
noted in this manual, a professional HVAC firm should be
consulted for proper venting information.
No. of
90° Elbows
“A” Feet (Meters)
1 40 (12.2)
2 30 (9.1)
3 20 (6.1)
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