American Dryer Corp. AD-27 - Manual (Page 16)

12
SINGLE DRYER VENTING
IMPORTANT: A minimum exhaust duct size of 6-inches (15.24 cm) must be used.
For a 6-inch (15.24 cm) horizontal run where a maximum of one (1) elbow is used (refer to the illustration
below). The ductwork from the dryer outlet must not exceed 8 feet (2.44 meters).
If the length of the duct run or quantity of elbows used exceeds the above noted specifications, the
cross-sectional 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 ductwork can only be
increased to an extent. When the ductwork approaches the maximum limits noted in
this manual, a professional heating, venting, and air conditioning (HVAC) firm should
be consulted for proper venting information.
When single 6-inch (15.24 cm) venting is used, for a horizontal run, the ductwork from the dryer to the outside
outlet cannot exceed 8 feet (2.44 meters) in total length. This calculation of 8 feet (2.44 meters) compensates or
allows for the use of a maximum of one (1) elbow (which is the outside outlet protection). Refer to the illustration
above.