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English 23
Installation instructions
Ductwork Tips
• Try to minimize transitions/turns/sharp angles (e.g., two staggered 45° angles are
better than one sharp 90° angle).
• Keep turns as far away from the hood exhaust as possible; keep as much space
between bends as possible.
• For best performance, use round instead of rectangular ducting, especially when
elbows are needed.
• If multiple elbows are used, try to keep at least 24 in. of straight duct between each
elbow.
• Avoid using “S” or back-to-back adjacent elbows.
• In extremely cold-weather regions, use thermal breaks (i.e., short sections of non-
metallic duct) to avoid indoor heat loss. Put the break as close to the outside pass-
through point as possible.
• Do not use flexible metal ducting, or ductwork smaller than what the tables advise.
• The hood exhaust connects to an 8” round duct. You can increase the duct size over the
duct run if desired.
• To prevent backdraft, never decrease the duct size over the run. If existing ductwork is
less than 8 inches in diameter, replace it with 8” ductwork.
• Join ducting with sheet-metal screws, then seal with certified duct/foil tape. Never join
ducting with tape only.
• Support the weight of the ducting with sheet-metal screws as needed.
• To avoid backdraft, a damper at the duct outlet may be required.
WARNING
• Electricity to the range hood should be installed only by a licensed electrician.
• Observe all local codes during site preparation and installation. Contact your local
building department for details.
• Improperly anchoring the hood to the wall may cause personal injury if the unit falls.
• To avoid electric-shock injury and property damage, do not drill/cut near in-wall
plumbing and electrical wiring.
• Use the temporary holding brackets to support the hood only until the hood is
permanently anchored.
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