Whirlpool YWED7990XG0 Installation Instructions Manual page 10

Rigid metal vent:
Recommended for best drying performance and to avoid
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crushing and kinking.
Flexible metal vent:
(Acceptable only if accessible to clean)
Must be fully extended and supported in final dryer location.
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Remove excess to avoid sagging and kinking that may
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result in reduced airflow and poor performance.
Do not install in enclosed walls, ceilings, or floors.
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The total length should not exceed 7
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NOTE:
If using an existing vent system, clean lint from
entire length of the system and make sure exhaust hood
is not plugged with lint. Replace plastic or metal foil vents
with rigid metal or flexible metal vents. Review Vent System
Chart and if necessary, modify existing vent system to
achieve best drying performance.
Exhaust hoods:
Must be at least 12" (305 mm) from ground or any object that
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may obstruct exhaust (such as flowers, rocks, bushes, or
snow).
Recommended Styles:
Louvered Hood
Acceptable Style:
Angled Hood
10
/ ft. (2.4 m).
3
4
Box Hood
Elbows:
45° elbows provide better airflow than 90° elbows.
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Recommended Styles:
90˚ elbow
Clamps:
Use clamps to seal all joints.
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Exhaust vent must not be connected or secured with screws
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or other fastening devices that extend into interior of duct
and catch lint. Do not use duct tape.
45˚ elbow