The length of vent system and number of elbows should be

Installation Dimensions

kept to a minimum to provide efficient performance.

 

 

 

 

 

 

 

 

 

 

 

For the Most Efficient and Quiet Operation:

 

 

36" (91.4 cm) or 48" (121.9 cm)

 

 

Use no more than three 90° elbows.

 

 

or cabinet opening width

 

 

(if installed between cabinets)

Make sure there is a minimum of 24" (61.0 cm) of straight

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

vent between the elbows if more than 1 elbow is used.

 

 

 

 

 

 

 

 

 

 

 

Do not install 2 elbows together.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Use clamps to seal all joints in the vent system.

 

 

 

 

 

 

 

 

 

 

 

The vent system must have a damper. If the roof or wall cap

 

 

 

 

 

 

 

 

 

 

 

has a damper, do not use the damper supplied with the range

 

 

 

 

 

 

 

 

 

 

 

hood.

 

 

 

 

 

 

 

 

 

 

 

Use caulking to seal exterior wall or roof opening around the

 

 

 

 

 

 

 

 

 

 

 

cap.

 

 

 

 

 

 

 

 

 

 

The size of the vent should be uniform.

 

 

 

 

 

 

 

 

 

See Note*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X*

 

 

 

Cold Weather Installations

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18" (45.7 cm) min.

 

 

 

 

 

 

 

 

An additional back draft damper should be installed to minimize

clearance upper

 

 

 

 

 

 

 

 

backward cold air flow and a thermal break should be installed to

 

 

 

 

 

 

 

 

 

 

cabinet to countertop

 

 

 

 

minimize conduction of outside temperatures as part of the vent

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

system. The damper should be on the cold air side of the thermal

 

 

 

 

 

 

 

 

 

 

 

break.

 

 

 

 

 

 

 

 

 

 

 

The break should be as close as possible to where the vent

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

system enters the heated portion of the house.

 

 

 

 

 

 

 

 

 

 

 

 

36" (91.4 cm) countertop height

Makeup Air

Local building codes may require the use of makeup air systems when using ventilation systems greater than specified CFM of air movement. The specified CFM varies from locale to locale.

Consult your HVAC professional for specific requirements in your area.

IMPORTANT:

Minimum distance “X”: 24" (61 cm) from electric cooking surfaces

Minimum distance “X”: 30" (76.2 cm) from gas cooking surfaces

The chimneys can be adjusted for different ceiling heights. See the following chart.

Vented Installations

 

Min. ceiling height

Max. ceiling height

 

 

 

 

Electric cooking

7'

9" (2.36 m)

10' 2" (3.1 m)

surface

 

 

 

Gas cooking surface 8'

3" (2.51 m)

10' 2" (3.1 m)

 

 

 

 

*NOTE: The range hood chimneys are adjustable and designed to meet varying ceiling or soffit heights depending on the distance “X” between the bottom of the range hood and the cooking surface. For higher ceilings, an Extension Kit Part Number W10352733 is available from your dealer or an authorized parts distributor. The chimney extension replaces the chimney shipped with the range hood.

Venting Requirements

Vent system must terminate to the outdoors.

Do not terminate the vent system in an attic or other enclosed area.

Do not use 4" (10.2 cm) laundry-type wall caps.

Use metal vent only. Rigid metal vent is recommended. Plastic or metal foil vent is not recommended.

Venting Methods

Typical Internal Blower Motor System Venting Installations

A 10" (25.4 cm) round vent system is needed for installation (not included). The range hood exhaust opening is 10" (25.4 cm) round.

NOTE: Flexible vent is not recommended. Flexible vent creates back pressure and air turbulence that greatly reduce performance.

Vent system can terminate either through the roof or wall. To vent through the wall, a 90º elbow is needed.

Roof Venting

Wall Venting

A

B

B

A

A. Roof cap

A. Wall cap

B. 10" (25.4 cm)

B. 10" (25.4 cm)

round vent

round vent

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KitchenAid LI3ZBC/W10331009C Venting Requirements, Installation Dimensions, For the Most Efficient and Quiet Operation