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Installation – Mounting Height & Clearance
6
www.zephyronline.com
DUCTING
A minimum of 8” round duct must be used to
maintain maximum air ow eciency for single
internal blower and 10” round duct for dual internal
blower.
Always use rigid type metal ducts only. Flexible
ducts could restrict air ow by up to 50%.
Also use calculation (on page 5) 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.
If turns or transitions are required; install as far
away from hood duct output and as far apart,
between the two as possible.
Minimum mount height between range top to hood
bottom should be no less than 24”.
Maximum mount height should be no higher than
36”.
It is important to install the hood at the proper
mounting height. Hoods mounted too low could
result in heat damage and re hazard; while hoods
mounted too high will be hard to reach and will
lose its performance and eciency.
If available, also refer range manufacturer’s height
clearance requirements and recommended hood
mounting height above range.
SHIPMENT / INSTALLATION:
• 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.
min. A
max. B
Standard Extension
Hood Heights Duct Cover Duct Cover
minimum ducted (A) 33” 49“
maximum (B) 50” 78”
Ceiling Heights
minimum ducted (C) 93” (7’ 9”) 109“ (9’ 1”)
maximum (D) 122” (10’ 2“) 148” (12’ 4”)
36”
24” min.
36” max.
min. C
max. D
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