Exhaust System Requirements - Frigidaire 27” Use And Care Manual

EXHAUST SYSTEM REQUIREMENTS

Use only 4 inch (10.16 cm) diameter (minimum) rigid or
flexible metal duct and approved vent hood which has a
swing-out damper(s) that opens when the dryer is in
operation. When the dryer stops, the damper(s)
automatically closes to prevent drafts and the entrance
of insects and rodents. To avoid restricting the outlet,
maintain a minimum of 12 inches (38.5 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 laundry center. Failure to follow
these instructions can create excessive drying times and fire
hazards.
Do not install a laundry center with flexible
plastic venting materials. If your present system is made up
of plastic duct or metal foil duct, replace it with a rigid or semi-
rigid metal duct. In Canada and the United States if metal (foil
type) duct is installed, it must be of a specific type identified by
the appliance manufacturer as suitable for use with clothes dryers
and in the United States must also comply with the Outline for
Clothes Dryer Transition Duct, UL standard 2158A.
venting materials are known to collapse, be easily crushed and
trap lint. These conditions will obstruct clothes dryer airflow and
increase the risk of fire. Ensure the present duct is free of
any lint prior to installing dryer duct.
INCORRECT
CORRECT
- Risk of Fire - A clothes dryer must be
exhausted outdoors. Do not exhaust dryer into a chimney, a
wall, a ceiling, an attic, a crawl space or any concealed space of
a building. A clothes dryer produces combustible lint. 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 must be
connected to an exhaust outdoors. Regularly inspect the
outdoor exhaust opening and remove any accumulation of lint
around the outdoor exhaust opening and in the surrounding
INCORRECT
CORRECT
example: clothing,draperies/curtains, paper) to come in contact
with the 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.
number of elbows allowed in the" EXHAUST DUCT LENGTHS"
chart. Lint can accumulate in the system, plugging the system
and creating a fire hazard, as well as increasing drying times.
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 exhaust system 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.
center where gasoline or other flammables are kept or stored.If
Flexible
the laundry center 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. The exhaust system
back pressure MUST not exceed 0.6 inches (1.52 cm) of water
column, measured with an inclined manometer at the point the
exhaust connects to the dryer. The exhaust system should be
inspected and cleaned a minimum of every 18 months with
normal usage. The more the dryer is used, the more often you
should check the exhaust system and vent hood for proper
operation.
The maximum length of the exhaust system depends upon the
type of duct used, number of elbows and type of exhaust hood.
The maximum length for both rigid and semi-rigid duct is shown
in the chart below.
Number
of 90°
Turns
MAXIMUM LENGTH OF 4-INCH (10.2 CM)
0
1
2
3
MAXIMUM LENGTH OF 4-INCH (10.2 CM)
DIAMETER SEMI-RIGID METAL DUCT
0
1
2
3
area.
4
Do not allow combustible materials (for
Do not exceed the length of duct pipe or
Do not screen the exhaust ends of the vent
Explosion hazard. Do not install the laundry
EXHAUST DUCT LENGTHS
EXHAUST HOOD TYPE
4"
Louvered
(10.2 CM)
DIAMETER RIGID METAL DUCT
56 ft. (17.07 m)
46 ft. (14.02 m)
34 ft. (10.36 m)
32 ft. (9.75 m)
30 ft. (9.14 m)
22 ft. (6.7 m)
16 ft. (4.88 m)
10 ft. (3.05 m)
2.5"
(6.35 CM)
42 ft. (12.8 m)
36 ft. (10.97 m)
28 ft. (8.53 m)
18 ft. (5.48 m)
22 ft. (6.7 m)
14 ft. (4.27 m)
10 ft. (3.05 m)
5 ft. (1.5 m)