For the most efficient and quiet operation:
Fire Hazard
l 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”
~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 floor 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.
q The size of the ductwork should be uniform. q Use no more than three 90” elbows.
q Make sure there is a minimum of 24 inches of straight duct between the elbows if more than one elbow is used.
q Do Not install two elbows together.
q Ducting should transition to 9’ round duct as soon as possible.
q 9’ round ducting is recommended for remote blowers.
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 Use duct tape to seal all joints in the ductwork system.
q Use caulking to seal exterior wall or roof opening around the cap.
Determine which venting method is best for your application and follow “Installation steps” starting on Page 4.
Venting methods
This range hood can be installed as either ducted or ductless.
Ductwork needed for installation | is not included. | round | Vertical roof venting | Horizontal | wall venting | |
x IO” rectangular, 7” round, | 8” round or 9” |
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ducting | may be used. |
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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 | |
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: 4378620 almond,
4378621 stainless steel,
4378622 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
45” elbow
90” elbow
90” flat elbow
transition to round
wall cap
7”, 8” or 9” Round | |||||
7.0 feet | .$s::.... | 2.5 feet | ..&!:;;.. | ||
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| ......>A |
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5.0 feet | ..<::::<<::*:p | 5.0 feet |
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.:~::<~;:y.” | ‘.:a::::.. | ||||
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| ;:.s:.::;. |
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12.0 feet
::...>::; .....
;gz:i.,‘.,...:::., :,::::+.~;g$$ :.~.~~~::~::‘X. ..
:~~~~~~~~............
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5.0 feet,....
........
......
0.0 feet ,&+
~~~~.g$<
............
@ ‘;..;’
.:::::::::::::::::::::,
...............
3-l/4” x 10” ductwork system
w wall cap
2 ft. | Maximum length | = | 35 feet | ||
| 1 - 90” elbow | = | 5ft. | ||
8 feet straight | = | 8ft. | |||
1 | cap | = | oft. | ||
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| Length | of | = | 13ft. | |
| x 10’ system | ||||
Note: Flexible ductwork is Not recommended.
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