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EXHAUST
SYSTEM
REQUIREMENTS
Use only 4 inch (10.2 cm) diameter (minimum) rigid or
flexible metal duct and approved vent hood which has a
swingzout damper(s) that open when the dryer is in
operation. When the dryer stops, the dampers automatically
close to prevent drafts and the entrance of insects and
rodents. To avoid restricting the outlet, maintain a minimum
of 12 inches (30.5 cm) clearance between the vent hood
and the ground or any other obstruction.
The following
are specific
requirements
for proper and safe operation
of your dryer. Failure to
follow these instructions can create excessive
drying
times and fire hazards.
Do not use plastic flexible duct to exhaust the dryer.
Excessive lint can build up inside exhaust system and
create a fire hazard and restrict air flow. Restricted air flow
will increase dryer times, if your present system is made up
of plastic duct or metal foil duct, replace it with a rigid or
flexible metal duct. Ensure the present duct is free of any
lint prior to installing
dryer duct.
If the dryer is not exhausted
outdoors,
some fine
lint will be expelled
into the laundry area. An
accumulation of lint in any area of the home can create a
health and fire hazard. The dryer exhaust system MUST
be exhausted
to the outside of the dwellin!!
Do not allow combustible
materials
(for example:
clothing,
draperies/curtains,
paper) to come in contact
with exhaust system. The dryer MUST NOT be exhausted
into a chimney, a wall, a ceiling, or any concealed space of
a building which can accumulate lint, resulting in a fire
hazard.
Exceeding
the length of duct pipe or number of
embows almowed in the "MAXIMUM LENGTH" charts can
cause an accumulation of lint in the exhaust system.
Plugging the system could create a fire hazard, as well as
increase drying times.
[_
Do not screen the exhaust ends of the vent system,
nor use any screws or rivets to assemble the exhaust
system. Lint can become caught in the screen, on the
screws or rivets, clogging the duct work and creating a fire
hazard as well as increasing drying times. Use an approved
vent hood to terminate the duct outdoors, and seal all joints
with duct tape. All male duct pipe fittings MUST be installed
downstream with the flow of air.
Explosion
hazard. Do not instatl the dryer
where gasoline
or other flammables
are kept or stored.
If the dryer is installed in a garage, it must be a minimum of
18 inches (45.7 cm) above the floor. Failure to do so can
result in death, explosion, fire or burns.
Number
of
90 °
Turns
0
1
2
3
4
MAXIMUM
LENGTH
of 4" (10.2 cm) Din. Rigid Metal Duct
VENT HOOD TYPE
(Preferred)
_4'_._
_Louvered
-,4
(10.2 cm)
60ft,
(18,28 m)
52ft.
(15,84 m)
44ft,
(13,41 m)
32 ft.
(9.75 m)
28ft,
(8.53 m)
(&38 cm)
48 ft.(14.63
m)
40 ft.(12.19
m)
32 ft, (9.75 m)
24 ft, (7.31 m)
16ft,
(4.87 m)
Number
of
96 °
Turns
o
1
2
3
MAXIMUM
LENGTH
of 4" (10.2 cm) Din. Flexible Metal Duct
VENT HOOD TYPE
(Preferred)
.>
Louvered
-q4-F
!16.2 era!!
30ft.
(9.14 m)
22 ft.
(6.71
m)
14 ft.
(4,27
m)
NOT RECOMMENDED
(&38 cm)
18 ft. (5.49 m)
14 ft. (4.27 m)
10 ft, (3,05 m)
INSTALL MALE FITTINGS
IN CORRECT
DIRECTION
In installations where the exhaust system is not described
in the charts, the following method must be used to
determine if the exhaust system is acceptable:
1.
Connect an inclined or digital manometer between the
dryer and the point the exhaust connects to the dryer.
2.
Set the dryer timer and temperature to air fluff (cool
down) and start the dryer.
3.
Read the measurement on the manometer.
4.
The system back pressure MUST NOT be higher than
0.75 inches of water column.
If the system back
pressure is less than 0.75 inches of water column, the
system is acceptable.
If the manometer reading is
higher than 0.75 inches of water column, the system is
too restrictive and the installation is unacceptable.
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