Exhaust System Requirements - Frigidaire Dryer Servicing

Exhaust System Requirements

Use only 4 inch (10.2 cm) diameter (minimum) rigid or
flexible metal duct and approved vent hood
which has a swing-out 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.
If the 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
Outline for Clothes Dryer Transition Duct, UL standard
2158A. Also, ensure the present duct is free of any lint
prior to installing dryer duct.
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 area.
(See Figure 2-2 & 2-3)
WARNING
Do not allow combustible materials (for example:
clothing, draperies and curtains, paper) to come in
contact with exhaust system. The dryer MUST NOT be
exhausted into a chimney, wall, ceiling, or any
concealed space of a building which can accumulate
lint, resulting in a fire hazard.
Do not screen the exhaust ends of the vent system, or
use any screws, rivets or other fasteners that extend
into the duct 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.
Section 2 Installation Information
Correct
Correct
Figure 2-2.
MAXIMUM LENGTH
of 4" (10.2cm) Rigid Metal Duct
VENT HOOD TYPE
(Preferred)
4"
(10.2cm)
0 60 ft. (18.3 m)
1 52 ft. (15.9 m)
2 44 ft. (13.5 m)
3 32 ft. (9.8 m)
4 28 ft. (9.5 m)
MAXIMUM LENGTH
of 4" (10.2cm) Semi-Rigid Metal Duct
VENT HOOD TYPE
(Preferred)
4"
(10.2cm)
0 30 ft. (9.1 m)
1 22 ft. (6.7 m)
2 14 ft. (4.3 m)
3 NOT RECOMMENDED
Figure 2-3.
Incorrect
Incorrect
2.5"
louvered (6.35cm)
48 ft. (14.6 m)
40 ft. (12.2 m)
32 ft. (9.8 m)
24 ft. (7.3 m)
16 ft. (4.9 m)
2.5"
louvered (6.35cm)
18 ft. (5.5 m)
14 ft. (4.3 m)
10 ft. (3.1 m)
2-5