Zephyr Gust AK7100BS-BF Guide D'utilisation, D'entretien Et D'installation page 13

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Mounting Height, Clearance, & Ducting
A minimum of 7" round or 3-1/4" x 10" rectangular duct must be used to maintain maximum air flow
efficiency. A 7" round isn't available for horizontal ducting.
Always use rigid type metal ducts only. Flexible ducts could restrict air flow by up to 50%.
Also use calculation (on page 11) to compute total available duct run when using elbows, transitions
and caps.
ALWAYS, when possible, reduce the number or transitions and turns. If long duct run is required,
increase duct size from 7" to 8".
If turns or transitions are required; install as far away from hood duct output and as far apart,
between the two as possible.
Minimum mounting height between range top to hood bottom should be no less than 24".
Maximum mounting height should be no higher than 32".
It is important to install the hood at the proper mounting height. Hoods mounted too low could result
in heat damage and fire hazard; while hoods mounted too high will be hard to reach and will lose its
performance and efficiency.
If available, also refer range manufacturer's height clearance requirements and recommended hood
mounting height above range.
For shipment and installation damages:
Please fully inspect unit for damage before installation.
If the unit is damaged in shipment, return the unit to the store in which it was bought for repair or
replacement.
If the unit is damaged by the customer, repair or replacement is the responsibility of the customer.
If the unit is damaged by the installer (if other than the customer), repair of replacement must be
made by arrangement between customer and installer.
Gust Use, Care, and Installation Guide
Installation Instructions
13