Laundrylux DAWF0 SERIES Installation Manual - page 12
12
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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
220 cfm (6.23 cmm) Exhaust Connections at Common Duct
A = 4-inch (10.16 cm)
B = 12 feet (3.656 meters)
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
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.
A = 20 feet (6.10 meters)
B = 4” (10.16 cm)
C = 12 feet (3.66 meters)
D = 4” (10.16 cm)
Horizontal Venting
When horizontal dryer venting is used, the length of the
ductwork from the dryer to the outside exhaust outlet, must
not exceed 20 feet (6.10 meters). The diameter of this
ductwork must be 4-inches (10.16 cm). Including tumbler/
dryer elbow connections or elbows used for outside protection
from the weather, no more than 1 elbow should be used in
the exhaust duct run. If more than 1 elbow is used, the cross-
sectional area of the ductwork must be increased.
Vertical Venting
When vertical dryer venting is used, the length of the ductwork
from the dryer to the outside exhaust outlet, must not exceed
12 feet (3.66 meters). The diameter of this ductwork must
be 4-inches (10.16 cm). Including tumbler/dryer elbow
connections or elbows used for outside protection from the
weather, no more than 3 elbows should be used in the exhaust
duct run. If more than 3 elbows are used, the cross-sectional
area of the ductwork must be increased.
Multiple Dryer (Common) Venting
IMPORTANT:
For extended ductwork runs, the cross-
sectional area of the ductwork can only be increased to an
extent. When the ductwork approaches the maximum
limits as noted in this manual, a professional HVAC firm
should be consulted for proper venting information.
If it is not feasible to provide separate exhaust ducts for each
dryer, ducts from individual dryers may be channeled into a
“common main duct.” The individual ducts should enter the
bottom or side of the main duct at an angle not more than
45º in the direction of airflow. The main duct should be
tapered, with the diameter increasing before each individual
duct is added.
IMPORTANT:
No more than four dryers should be
connected to one 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 one elbow in it.