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
•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 |
| 4” (10 .16 cm) | 2.5” (6.35 cm) | ||
No. of 90° elbows | Rigid | Metallic Flexible* | Rigid | Metallic Flexible* |
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0 | 24.4 m (80 ft.) | 12.4 m (41 ft.) | 22.6 m (74 ft.) | 10.1 m (33 ft.) |
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1 | 20.7 m (68 ft.) | 11.2 m (37 ft.) | 18.9 m (62 ft.) | 8.8 m (29 ft.) |
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2 | 17.4 m (57 ft.) | 10.1 m (33 ft.) | 15.5 m (51 ft.) | 7.6 m (25 ft.) |
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3 | 14.3 m (47 ft.) | 9.0 m (29 ft.) | 12.5 m (41 ft.) | 6.5 m (21 ft.) |
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