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VERTICAL VENTING
When vertical single venting is used, the minimum duct size
is 8-inches (20.32 cm), refer to
Illus. B below
, the
ductwork from the dryer to the outside outlet
cannot
exceed 60 feet (18 meters), refer to
Illus. B below
. This
calculation compensates for the use of a maximum of two (2) elbows. These are the two (2) elbows that create
the 180º (turned downward) outside outlet.
Illus. B
If the length of the duct run or quantity of elbows used exceeds the above noted specifications, the cross section
area of the ductwork
must be
increased in proportion to the number of elbows or duct run added.
IMPORTANT:
For extended ductwork runs, the cross section area of the duct can only be
increased to an extent. For extended ductwork runs, a professional heating,
ventilating, and air-conditioning (HVAC) firm
should be
consulted for proper
venting information.
IMPORTANT: It is recommended
that exhaust or booster fans not be used in the exhaust
ductwork system.
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