touse thefewest number ofelbows a nd turns.
Exhaust A ir Flow
Allow as much room as possible when using elbows or making
turns. Bend vent gradually to avoid kinking.
Vent outlet is located at the center of the bottom dryer back.
The vent can be routed up, down, left, right, behind the dryer,
or straight out the back of the dryer.
Maximum length of vent system depends upon the type of
vent used, number of elbows, and type of exhaust hood.
The maximum length for rigid vent is shown in the chart.
Maximum Vent Length
4" (102 mm) Diameter Exhaust Hoods
Rigid Metal Vent
No. of 90 ° turns
Box Hood and Louvered Style
Angled Hood Style
58ft. (17.7 m)
48ft. (14.6 m)
38ft. (11.6 m)
35 ft. (10.7 m)
29 ft. (8.8 m)
27 ft. (8.2 m)
21 ft. (6.4 m)
For vent systems not covered by the vent specification chart,
see your parts distributor.
If dryer is installed in a confined area, such as a bedroom or
bathroom, provision must be made for enough air for combustion
and ventilation. (Check governing codes and ordinances.)
See "Recessed Area Installation Instructions" in the "Location
A main vent can be used for venting a group of dryers. The
main vent should be sized to remove 200 CFM of air per dryer
(min. static pressure of 0.06 inch water column TOTAL).
lint screens of proper design may be used in
the main vent if checked and cleaned frequently. The room
where the dryers are located should have make-up air equal
to or greater than the CFM of all the dryers in the room.
Back-draft Damper Kits, Part No. 3391910, are available from
your dealer or distributor and should be installed in the vent of
each dryer to prevent exhausted air from returning into the
dryers and to keep the exhaust in balance within the main
air openings are required.
Each vent should enter the main vent at an angle pointing in the
direction of the airflow. Vents entering from the opposite side
should be staggered to reduce the exhausted air from interfering
with the other vents.
The maximum angle of each vent entering the main vent should
be no more than 30 °.
Keep air openings free of dry cleaning fluid fumes. Fumes create
acids which, when drawn through the dryer heating units, can
damage dryers and loads being dried.
A clean-out cover should be located on the main vent for periodic
cleaning of the vent system.
If an exhaust hood cannot be used:
The outside end of the main vent should have a sweep elbow
directed downward. If the main vent travels vertically through the
roof, rather than through the watt, install a 180° sweep elbow on
the end of the vent at least 2 feet (610 mm) above the highest
part of the building. The opening in the wall or roof shall have a
diameter 1/2" (13 mm) larger than the vent diameter. The vent
should be centered in the opening.
M ' n 12ov(e30a0n ymam_ c tme at,a_i c e
2ft. (610 mm) min.
point of building
Do not install screening or cap over the end of the vent.