Venting Requirements - Jenn-Air W10692945 Installation Instructions And Use & Care Manual

Installation Dimensions
B
D
A. Ceiling height
B. Hood height from ceiling to bottom of the
hood: A - C - D = B
C. 30" (76.2 cm) minimum to 36" (91.4 cm)
maximum suggested hood height
D. Countertop height
IMPORTANT:
Minimum distance "C": 30" (76.2 cm) from electric cooking
surface.
Minimum distance "C": 30" (76.2 cm) from gas cooking surface.
Suggested maximum distance "C": 36" (91.4 cm)
The chimneys can be adjusted for different ceiling heights.
See the following chart.
Vented Installations
Minimum ceiling
height
Electric cooking 7' 10" (2.39 m)
surface
Gas cooking 8' 4" (2.54 m)
surface
Non-vented (Recirculating) Installations
Minimum ceiling
height
Electric cooking 7' 10" (2.39 m)
surface
Gas cooking 8' 4" (2.54 m)
surface
*NOTE: The hood chimneys are adjustable and designed to
meet varying ceiling or soffit heights depending on the distance
"C" between the bottom of the hood and the cooking surface.
For higher ceilings, a Stainless Steel Chimney Extension Kit
Part Number is available from your dealer or an authorized parts
distributor. The chimney extension replaces the upper chimney
shipped with the hood.
C A
Maximum ceiling
height
10' 4" (3.24 m)
9' 10" (3.0 m)
Maximum ceiling
height
10' 4" (3.24 m)
10' 4" (3.24 m)

Venting Requirements

Vent system must terminate to the outside, except for
■
non- vented (recirculating) installations.
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.
■
Do not use plastic or metal foil vent.
The vent system must have a damper. If the roof or wall cap has
■
a damper, do not use the damper supplied with the hood.
For the most efficient and quiet operation:
Use a straight run or as few elbows as possible.
■
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 vent clamps to seal all joints in the vent system.
■
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.
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.
Venting Methods
This island hood is factory set for venting through the roof.
A 6" (15.2 cm) round vent system is needed for installation (not
included). The hood exhaust opening is 6" (15.2 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 a wall, a 90° elbow is needed.
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