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Fire Hazard
*Terminate venting system to outside.
l
Do Not terminate the vent in an attic or other
enclosed
space.
l
Use only metal ductwork.
l
Do Not use 4" laundry-type
wall caps.
l
Do Not obstruct the flow of combustion and ventilation
air.
Failure to follow these instructions
could result in a fire.
Property Damage
l
Before making cutouts, make sure there is proper
clearance within the wall or roof for the exhaust duct.
l
Do Not cut a joist or stud unless absolutely necessary.
If a joist or stud must be cut, then a supporting frame
must be constructed.
Failure to follow these instructions
may result in
property damage.
For the most efficient and quiet operation:
q
It is recommended that the range be vented
vertically through the roof through 9" round
ductwork.
q
The size of the ductwork should be uniform.
q
Use no more than three 90" elbows.
q
The length of ductwork and number of elbows
should be kept to a minimum to provide
efficient performance.
q
If roof or wall cap has a damper, Do Not use
damper supplied with the range hood.
q
Make sure there is a minimum of 24 inch of
straight duct between the elbows if more than
one elbow is used.
q
Use duct tape to seal all joints in the ductwork
system.
q
Use caulking to seal exterior wall or roof
m Do Not install two elbows together.
opening around the cap.
q
Ducting should transition to 9" round duct as
soon as possible.
Determine which venting method is best for your
application and follow "Installation
steps" on
Page 3.
jJ 9" round duct is recommended for remote
blowers.
Venting methods
This range hood can be installed as either ducted or
ductless.
Vertical roof venting
Horizontal
wall venting
Ductwork needed for installation
is not included.
3-l/4" x IO" rectangular, 7" round, 8" round or 9" round
ducting may be used.
Ductwork can terminate either through the roof or wall.
To vent through a wall, a 90" elbow is needed.
The ductwork length should not exceed the lengths
shown in the chart below.
Duct size
Maximum length
3-l/4" x 10"
35 feet
7" round
40 feet
8" round
50 feet
9" round
60 feet
Ductless installations
vent out the grates in the sides of
the chimney.
Ductless installations
require a Ductless
Installation Kit, Part Nos: 4378624 (almond),
4378625 (stainless steel),
4378626 (white),
available from your
KitchenAid dealer.
Calculating the
ductwork
length
To calculate the length of the system you need, add the
equivalent feet for each ductwork piece used in the
system.
Ductwork Piece
3-l/4" x IO" Rectangular
7", 8" or 9" Round
3-l /4" x IO" ductwork system
45" elbow
90" elbow
90" flat elbow
7.0 feet
.s:i:..
.,::,i;ijiig
,..:::,:p'
., .:.;::
:~:
..:&~
,.:,:.:.:.:.:
:.:
5.0 feet
.~~~ii:,
,f:~fiigl-::'::i:~
..+y:,:::.
...>F.
@::.;::
::.:: ,,.:.:3::;:sy
:::1 :.:.;:::::.:::.;:.:
:,:~:siigijipijii:g:
,.l):.:........~.~~
12.0 feet
~~~~
:.:.:.:.:
>: ,:::.,,
. . . . . i::.::;
.::':::::::':::..
..:.::>>- . . . . . . . ..-....:i:~B:
. . . . .,.,.....,.,...,.....,
..)
:~i.~:i:i:':~:i:8:i:8::::~.,
:;"'::.,:;:::;:;:;:;:;:;
2.5 feet
. . . &:..
. . . . . . . . . . . .
.,... .,., 1
.+>>,.
@
.A..
'&,.?$>.
.:;*;:{:A
:.
,.,.. . . . .
5.0 feet
.:::liis:..
..:.:.:.:.:.:.:.:.:
:.:..
3-l 14" x
10" elbow
w
wall cap
Maximum length
q
35 feet
1 - 90" elbow
=
5ft.
=
8ft.
=
oft.
transition to round
5.0 feet
3-l/4" x IO" system
= 13 ft.
.: ..::;:;
:i:g:o
-
i; jz$j:. ":
Note: Flexible ductwork is Not recommended.
wall cap
0.0 feet
If it is used, each foot of flexible ductwork used is
equivalent to two feet of straight metal ductwork
when calculating the ductwork length. (Example:
A flexible elbow equals two standard elbows.)
Page 2
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