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Installation – Mounting Height & Clearance
6
www.zephyronline.com
DUCTING
A minimum of 6” round duct work must be used to
maintain maximum air fl ow effi ciency with the 290/600
cfm internal blower. A minimum of 10” to 8” round duct
work must be used with the 1000 cfm remote blower.
Always use rigid type metal ducts only. Flexible ducts
could restrict air fl ow by up to 50%.
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 from 6” to 7” or 8”. If a reducer
is used, install a long reducer instead of a pancake
reducer. Reduce duct size as far away from opening as
possible.
If turns or transitions are required; install as far
away from opening and as far apart, between 2, as
possible.
Minimum mount height between range top and hood
bottom should be no less than 28”.
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 fi re hazard; while hoods
mounted too high will be hard to reach and will lose
its performance and effi ciency.
If available, also refer to range manufacturer’s height
clearance requirements and recommended hood
mounting height above range.
Vertical Ducting:
6” round minimum (internal blower)
10” to 8” round minimum (remote blower)
Horizontal Ducting:
N/A
DAMAGE-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.
28” min.
36” max.
min. A
max. B
min. C
max. D
Standard Extension
Hood Heights Duct Cover Duct Cover
minimum (A) 30-1/2” 44“
maximum (B) 49-1/2” 77”
Ceiling Heights
minimum (C) 94-1/2” (7’ 10-1/2”) 108“ (9‘)
maximum (D) 121-1/2” (10’ 1-1/2“) 149” (12’ 5”)
36”
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