The internal dimensions of the dryer’s rectangular exhaust vent ductwork is 8-1/2” x 21-inches (20.6 cm x
53.5cm). A transition piece to 24-inches (60.96 cm) in diameter round is supplied. The location’s exhaust duct must be the minimum exhaust size requirement of (24-inch [60.96 cm] round duct or 452 square inch [2,916 square centimeters] square duct) the ductwork from the dryer to the outside exhaust outlet for a horizontal run with no more than one (1) elbow must not exceed 43 feet (13.1 meters) for gas and 20 feet
(6.09 meters) for steam dryers. (Refer to the illustration below and on page 18.) For locations with more than one (1) elbow, the minimum exhaust size for a gas model dryer is 28-inch (71.12 cm) round duct (615 square inch [3,967 square centimeters] duct). For steam model a 32-inch (81.28 cm) round duct (840 square inch [5,419 square centimeters] duct) must be used. The horizontal or vertical duct total run on both gas and steam models must not exceed 50 feet (15.24 meters) which includes the use of no more than three (3) elbows (refer to the illustrations on page 19 and page 20). Should more than the maximum number of elbows be used or if the run exceeds the maximum limits noted, a professional heating, venting, and air conditioning (HVAC) firm should be consulted for proper venting information.
IMPORTANT: For extended ductwork runs or where more than the specified number of elbows are used, a professional HVAC firm should be contacted for proper venting information.
NOTE: For extended ductwork runs the cross-sectional area of a duct can only be increased to an extent. In some cases the addition of a booster fan in the ductwork may be necessary.
