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installing your dryer _11
DUCTING REQUIREMENTS
• Use a 4-inch (10.2 cm) diameter rigid aluminum or rigid galvanized steel duct.
• Do not use a smaller duct.
• Ducts larger than 4 inches (10.2 cm) in diameter can result in increased lint accumulation.
Lint accumulation should be cleaned regularly.
• If a flexible metal duct must be used, use the type with a stiff sheet metal wall. Do not use a flexible duct
with a thin foil wall. Serious blockage can result if the flexible metal duct is bent too sharply.
• Never install any type of flexible duct in walls, ceilings, or other concealed spaces.
• Keep the exhaust duct as straight and short as possible.
• Secure joints with duct tape. Do not use screws.
• Plastic flexible duct can kink, sag, be punctured, reduce airflow, extend drying times, and affect dryer
operation.
• Exhaust systems longer than recommended can extend drying times, affect machine operation, and
may collect lint.
• The exhaust duct should end with an exhaust hood with a swing-out damper to prevent back drafts and
entry of wildlife. Never use an exhaust hood with a magnetic damper.
• The hood should have at least 12 inches (30.5 cm) of clearance between the bottom of the hood and
the ground or other obstruction. The hood opening should point down.
• Never install a screen over the exhaust outlet.
• To avoid lint buildup, do not exhaust the dryer directly into a window well. Do not exhaust under a house
or porch.
• If exhaust ductwork must run through an unheated area, the duct should be insulated and slope slightly
down towards the exhaust hood to reduce condensation and lint buildup.
• Inspect and clean the interior of the exhaust system at least once a year. Unplug the power cord before
cleaning.
• Check frequently to be sure the exhaust hood damper opens and closes freely.
• Check once per month, and clean at least one time per year. Note: If clothes are not getting dry, then
check ducting for obstructions.
• Do not exhaust dryer into any wall, ceiling, crawl space, or concealed space of a building, gas vent, or
any other common duct or chimney. This could create a fire hazard from lint expelled by the dryer.
ELECTRIC AND GAS DRYER
Weather Hood Type
Recommended Use only for short-run installation
4” (10 .16 cm) 2.5” (6.35 cm)
No. of 90° elbows Rigid Metallic Flexible* Rigid Metallic Flexible*
0 24.4 m (80 ft.) 12.4 m (41 ft.) 22.6 m (74 ft.) 10.1 m (33 ft.)
1 20.7 m (68 ft.) 11.2 m (37 ft.) 18.9 m (62 ft.) 8.8 m (29 ft.)
2 17.4 m (57 ft.) 10.1 m (33 ft.) 15.5 m (51 ft.) 7.6 m (25 ft.)
3 14.3m (47 ft.) 9.0 m (29 ft.) 12.5 m (41 ft.) 6.5 m (21 ft.)
* Do not use non-metallic flexible duct.
01 installing your dryer
DV520AE-02836B_EN.indd 11 2010-06-03 �� 5:38:26