Venting Requirements - KitchenAid KWCU300WSS0 Installation & Use Manual

Installation Dimensions
30" (76.2 cm), 36" (91.4 cm),
42" (106.7 cm) or 48" (121.9 cm)
(If installed between cabinets)
18" (45.7 cm) min.
clearance upper
cabinet to countertop
36" (91.4 cm)
countertop height
A. 84" (213.4 cm) minimum for
installations with canopy only.
IMPORTANT:
Minimum distance "X": 30" (76.2 cm)
Suggested maximum distance "X": 36" (91.4 cm)

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.
■ The length of vent system and number of elbows should be
kept to a minimum to provide efficient performance.
For the most efficient and quiet operation:
■ Use no more than three 90° elbows.
■
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.
6
cabinet opening width
Min. cabinet
opening width
13" (33.0 cm)
X
B. 96" (243.8 cm) minimum for
installations with optional
duct cover or telescopic
chimney kit.
■ 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.
Cold weather installations
An additional back draft damper should be installed to minimize
backward cold air flow and a thermal break should be installed to
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.
A B
Makeup air
Local building codes may require the use of make up 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.
Venting Methods
A 6" (15.2 cm) round vent system is needed for installation (not
included). The hood exhaust opening is 6" (15.2 cm) round. Two
6" (15.2 cm) round vent systems are needed for installation on
48" (121.9 cm) models.
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. The
exhaust collar can also be directed to vent out the rear of the
hood.
To vent through the wall, the blower needs to be changed to the
proper orientation.
Roof Venting
B
A. Roof cap
B. 6" (15.2 cm)
round vent*
*The 48" (121.9 cm) hood uses two 6" (15.2 cm) round vents or
transitions to 10" (25.4 cm) round vent using Part Number
4396915.
Wall Venting Rear Venting
A
B
B
A
A. Wall cap A. Wall cap
B. 6" (15.2 cm) B. 6" (15.2 cm)
round vent*
A
round vent*