Illus. C (refer to the previous page) shows the minimum cross section area for multiple dryer venting. These figures must be increased in proportion if the main duct run from the last dryer to where it exhausts has numerous elbows or is unusually long.
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
IMPORTANT VENTING REMINDERS
•Ductwork size and installation should be done by a qualified professional.
•The dryer must be exhausted to the outdoors.
•Ductwork should be routed as short as possible to the outdoors with as few elbows as possible.
•Avoid 90° turns, use 30° or 45° turns instead.
•The size of the ductwork must be a minimum of 8-
inches (20.32 cm) for horizontal runs and
•The inside of the ductwork should be as smooth
as possible with no projections from sheet metal screws.
•Ducts added should overlap the duct to which it is to be connected.
•ALL ducts should be taped to prevent moisture and lint from escaping into the building.
•Inspection or clean out doors should be installed
throughout strategic points in the ductwork for periodic inspection and cleaning.
•Whenever the duct passes through combustible materials, the opening must be
•The outside of the ductwork must be protected from the weather. A 90° elbow must be used for horizontal run and when vertically through a roof by using a 180° turn to point the opening downward. The distance between the exhaust duct and the nearest obstruction (i.e., roof or ground) must be twice the diameter of the duct.
•DO NOT use screens, louvers, or caps on the outside opening of the exhaust ductwork.
•Exhaust back pressure measured by a manometer
at the dryer exhaust duct area must be no less than 0 and must not exceed 0.3 inches (0.74 mb) of water column (W.C.).
•Exhaust ductwork outlets should not be located in an area directly where
WARNING:
!DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER/SCREEN IN PLACE, EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED.
IMPORTANT:
!It is recommended that exhaust or booster fans not be used in the exhaust ductwork system.
ELECTRICAL INFORMATION
Electrical Requirements
ALL electrical connections must be made by a properly licensed and competent electrician. This is to ensure that the electrical installation is adequate and conforms to local and state regulations or codes. In the absence of such codes, ALL electrical connections, materials, and workmanship must conform to the applicable requirements of the National Electrical Code ANSI/NFPA NO.
IMPORTANT:
!Failure to comply with these codes or ordinances, and/or the requirements stipulated in this manual can result in personal injury or component failure.
NOTE:
Component failure due to improper installation will VOID THE WARRANTY.
Each dryer should be connected to an independently protected branch circuit. The dryer must be connected with copper wire only. DO NOT use aluminum wire; it could create a fire hazard. The copper conductor wire/cable must be of proper ampacity and insulation in accordance with electric codes for making ALL service connections.
NOTE:
!The use of aluminum wire will VOID THE WARRANTY.
An individual ground circuit must be provided to each dryer, do not daisy chain.
Component failure due to improper voltage application will VOID THE WARRANTY.
IMPORTANT:
A separate protected circuit must be provided to each dryer.
The dryer must be connected to the electric supply shown on the data label. In the case of 208 VAC or 230/240 VAC, the supply voltage must match the electric service specifications of the data label exactly.
The wire size must be properly sized to handle the related current.
WARNING:
208 VAC AND 230/240 VAC ARE NOT THE SAME. Any damage done to dryer components due to improper voltage connections will automatically VOID THE WARRANTY.
8 | American Dryer Corp. |
