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Plan installation to use the fewest number of elbows and turns.
ExhaustAir Flow
A. Good
B. Better
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.
Vent System Length
Maximum length of vent system depends upon the type of vent
used, number of elbows, and type of exhaust hood.
Maximum Vent Length
102 mm (4") Diameter Exhaust Hoods
Rigid Metal Vent _
No. of 900 turns Box Hood and Louvered Style Angled Hood Style
0 39.6 m (130 ft.) 39.3 m (129 ft.)
1 38.1 m (125 ft.) 36.3 m (119 ft.)
2 35.1 m (115 ft.) 33.2 m (109 ft.)
3 32.3 m (106 ft.) 30.5 m (100 ft.)
4 98 m (98 ft.) 28 m (92 ft.)
If dryer is installed in a confined area, such as a bedroom,
bathroom, or closet, provision must be made for enough air
for combustion and ventilation. (Check governing codes and
ordinances.) See "Recessed Area and Closet Installation
Instructions" in the "Location requirements" section.
A 102 mm (4") outlet hood is preferred. However, a 64 mm
(21_'') outlet exhaust hood may be used. A 64 mm (21_'')
outlet creates greater back pressure than other hood types.
For permanent installation, a stationary vent system is required.
Multiple Dryer Venting
[] A main vent can be used for venting a group of dryers. Main
vent should be sized to remove 5663 I/min (200 CFM) of air
per dryer. Large-capacity 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 airflow of all the dryers in
the room.
[] Back-draft Damper Kit, Part No. 3391910, is available from
your dealer and should be installed in each dryer's vent to
prevent exhausted air from returning into the dryers and to
keep the exhaust in balance within the main vent.
Unobstructed 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 °.
A. Individualdryervent
B. Mainvent
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:
A. Exhaust hood or elbow
B. Waft
C. Main collector vent
D. Horizontal vent
E. 180° sweep elbow
E Vertical vent
G. Roof
610 mm (24")
min. above
highest point
of building
i Min. 300 mm (12") clearance
above any accumulation
of snow, ice, or debris such
as teaves.
G
C
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 wall, install a 180° sweep elbow on
the end of the vent at least 610 mm (2 ft.) above the highest part
of the building. The opening in wall or roof shall have a diameter
13 mm C_") larger than the vent diameter. The vent should be
centered in the opening.
Do not install screening or cap over the end of the vent.
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