Venting requirements
Horizontal wall venting
Now start...
Vented models only
Non-vented models cannot be converted to vent.
With range hood in kitchen.
Slide cardboard or hardboard under range
before moving range across floor to prevent
damaging floor covering.
Cover countertop, cooktop or set-in range
with a thick, protective covering to prevent
damaging countertop.
Venting system must terminate to the
outside.
3-l/4” x 10”
through the wail
Do not terminate the duct in an attic or
other enclosed space.
Do not use four-inch laundry-type wall
caps.
Do not use plastic duct.
Duct needed for installation is not included.
Backdraft damper supplied with product
must be used. If roof or wall cap has a
damper, do not use damper supplied with
hood. Use metal duct only. Rigid metal duct
is recommended.
Determine which outside venting method
you need to use.
The length of the duct and number of
elbows should be kept to a minimum to
provide efficient performance. The size of
the duct should be uniform. Do Not install
two elbows together. Use duct tape to seal
all joints in the duct system. Duct can
terminate either through the roof or wall.
Use caulking to seal exterior wall or roof
opening around exhaust hood. For the most
efficient and quiet operation, it is
recommended that the range hood be
vented vertically through the roof using 7”
round duct.
Figures l-4 show common venting methods
and what types of materials are needed.
wail cap
4
24!l
4
1 W Disconnect and move freestanding
range from cabinet opening to provide
easier access to upper cabinet and rear
wall. Put a thick, protective covering over
cooktop, set-in range or countertop to
protect from damage or dirt.
2
W If your range hood is a vented-only
model, determine which venting method
(roof or wall venting) you need to use.
Figure 3
roof cao
7” min. diameter 7” min. diameter
round duct round duct
eibows~--~--i-~i:::i.~
If your range hood is a non-vented-
(recirculating) only model, go to Step 3a,
Panel D.
3-l/4” x 10” to round 3-l/4” x 10” to round
duct transition duct transition
Figure 4
To install a
vented-only model
fnstalation:
Recommended duct length
Use 3-l /4” x lo” or 7” duct with a maximum
length of 26 feet for duct system. For best
performance, use no more than three 90”
elbows. To calculate the length of system
you need, add the equivalent feet for each
duct piece used in the system. See the
following examples.
3- l/4” x lo” duct system
Vertical roof venting
roof cap
, /
7” round vent
\ I
knockGuts
knockouts
W Remove knockout from the wirina
3-l 14” x 10”
eibow ~~KiI13e~
L
2
h. 1 - 90” elbow = 5 ft.
1 8 feet straight = 8 ft.
1 - wall cap = 0 ft.
Length of 3-l/4” x
lo” system
=13 ft.
66”
d \‘p7”’
--. .:
- opening (top or rear) to be used.
For rectangular venting,
remove only the
3-l /4” x lo” rectangular opening knockout
for the venting method (roof or wall) you
Figure 1 1
Recommended standard fittings
have selected.
Vertical roof venting
roof cap
/
terminal
box
cover
3-114” x 10” 90”
3-l/4” x 10” fiat
3-l/4” x 10” wail
elbow = 5 ft.
elbow = 12 ft.
cap = 0 ft.
3-l/4” x lo”
through the roof
i+Q,
t r
66”
7” duct system
9VeibMF6ft.-q,FP
‘3-l/4” x lo”
damper
4
W Remove terminal box cover from
L
Maximum length
= 26
feet
1 - transition
= 4.5 ft.
range hood.
3-l/i’x lo”
to 7”
transition
2 - 90” elbows
1 - wall cap
8 feet straight
=lO ft.
= 0 ft.
= 8 ft.
Excessive Weight Hazard
Use two or more people to move and
install range hood.
Failure to follow this instruction can
result in back or other injury.
Length of 7” system = 22.5 ft.
Figure 2
Recommended standard fittings
keyhole slot
front
of hood
w
W Lift the ranae hood into final
3-114” x 10” to 7” 90” elbow = 5 ft.
90” elbow = 5 ft.
I /
5
45” elbow = 2.5 ft.
7” wail cap = 0 ft.
position and center. Mark on the underside
of cabinet the location of the four keyhole
mounting slots. Set range hood aside on a
protected surface.
Panel B
