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113403-14 www.amdry.com 17
Important
No more than 4 dryers should be connected to 1
main common duct.
The illustration below shows the minimum cross-sectional
area for multiple dryer round or square venting. These figures
must be increased if the main duct run from the last dryer to
where it exhausts to the outdoors is longer than 12 feet (3.656
meters) or has more than 1 elbow in it.
NOTE 1 Opening from combustible materials must be 2-inches (5.08 cm) larger
than the duct (all the way around). The duct must be centered within
this opening.
NOTE 2 Distance should be 2 times the diameter of the duct to the nearest
obstruction.
Multiple Dryer Venting with 4-Inch (10.16 cm) Diameter
230 cfm (6.51 cmm) Exhaust Connections at Common Duct
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,
state, and national regulations or codes of the country of
origin. 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. 70-LATEST EDITION or in Canada, the
Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or
LATEST EDITION.
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, which could
cause 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.
The manufacturer reserves the right to make changes in
specifications at any time without notice or obligation.
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 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 240 VAC are not the same. Any
damage done to dryer components due to
improper voltage connections will automatically void the
warranty.
NUMBER OF DRYERS 4 3 2 1
MINIMUM CROSS-
SECTIONAL AREA
SQ IN 80 80 54 30
SQ CM 516.1 516.1 348.4 193.55
MINIMUM ROUND
DUCT DIAMETER
IN 10 10 8 6
CM 25.4 25.4 20.32 15.24
SL20
A =SL20 4-inch (10.16 cm)
SL31 6-inch (15.24 cm)
SL50 8-inch (20.32 cm)
SL75 8-inch (20.32 cm)
B =12 feet (3.656 meters)
NUMBER OF DRYERS 4 3 2 1
MINIMUM CROSS-
SECTIONAL AREA
SQ IN 120 120 80 54
SQ CM 774.2 774.2 516.1 348.4
MINIMUM ROUND
DUCT DIAMETER
IN 12 12 10 8
CM 30.48 30.48 25.4 20.32
Multiple Dryer Venting with 8-Inch (20.32 cm) Diameter
525 cfm (14.87 cmm) Exhaust Connections at Common Duct
SL50
NUMBER OF DRYERS 4 3 2 1
MINIMUM CROSS-
SECTIONAL AREA
SQ IN 120 120 80 54
SQ CM 774.2 774.2 516.1 348.4
MINIMUM ROUND
DUCT DIAMETER
IN 12 12 10 8
CM 30.48 30.48 25.4 20.32
Multiple Dryer Venting with 8-Inch (20.32 cm) Diameter
560 cfm (15.86 cmm) Exhaust Connections at Common Duct
SL75
NUMBER OF DRYERS 4 3 2 1
MINIMUM CROSS-
SECTIONAL AREA
SQ IN 80 80 54 30
SQ CM 516.1 516.1 348.4 193.55
MINIMUM ROUND
DUCT DIAMETER
IN 10 10 8 6
CM 25.4 25.4 20.32 15.24
SL31
Multiple Dryer Venting with 6-Inch (15.24 cm) Diameter
360 cfm (10.19 cmm) Exhaust Connections at Common Duct
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