Installation –
Mounting Height & Clearance
6
www.zephyronline.com
DUCTING
A minimum of 6” round duct is recommended to
maintain maximum air flow efficiency.
Always use rigid type metal ducts only. Flexible
ducts could restrict air flow by up to 50%.
Use calculation worksheet to compute total duct
work (Page 5).
ALWAYS, when possible, reduce the number of
transitions and turns. If a long duct run is required,
increase duct size from 6” to 7” or 8”.
If turns or transitions are required: Install as far
away from duct opening and as far apart between
the two transitions as possible.
Minimum mount height between range top to hood
bottom should be no less than 26”.
Maximum mount height should be no higher than
34”.
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
loose performance and efficiency.
If available, also refer to range manufacturer’s
height clearance requirements and recommended
hood mounting height above range. Always check
your local codes for any differences.
Duct cover extension kit available for ceiling
heights up to 12 feet. Turn to page 24 for part
number and ordering information.
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.
A
B
C
D
E
F
ZAZ
ZLC
ZRM
Standard Duct Cover
Extension Duct Cover
A
B
C
D
E
F
ZAZ
ZLC
ZRM
28”
31”
39”
90” (7’ 6”)
80”
150” (12’ 6”)
29”
91” (7’ 7”)
47”
51”
80”
150” (12’ 6”)
109” (9’ 1”)
113” (9’ 5”)
36”
50”
98” (8’ 2”)
120” (10’)
47”
51”
80”
109” (9’ 1”)
113” (9’ 5”)
150” (12’ 6”)
A : Minimum Ducted Hood Height
B : Minimum Recirculating Hood Height
C : Maximum Hood Height
D : Minimum Ducted Ceiling Height
E : Minimum Recirculating Ceiling Height
F : Maximum Ceiling Height
min. A
min. B
max. C
36”
26” min.
34” max.
min. D
min. E
max. F
31-
1/2
”
93-
1/2
” (7’ 9-
1/2
”)
32-
1/2
”
46-
1/2
”
94-
1/2
” (7’ 10-
1/2
”)
116-
1/2
” (9’ 8-
1/2
”)
93” (7’ 9”)
109” (9’ 1”)
50-
1/2
”
50-
1/2
”
112-
1/2
” (9’ 4-
1/2
”)
112-
1/2
” (9’ 4-
1/2
”)
ZRE
ZRE
28-
1/2
”
39”
78”
148” (12’ 4”)
109” (9’ 1”)
48-
1/2
”
48-
1/2
”
110-
1/2
” (9’ 2-
1/2
”)
110-
1/2
” (9’ 2-
1/2
”)
28-
1/2
”
90-
1/2
” (7’ 6-
1/2
”)
90-
1/2
” (7’ 6-
1/2
”)
