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Built-in cabinet locations
Roof Venting
Calculating Vent System Length
It is recommended that you use round vent instead of rectangular
vent, especially if elbows are required. If rectangular vent is
required, it should be transitioned to 10" (25.4 cm) round vent as
soon as possible.
Maximum Length of Vent System
To calculate the length of the system you need, add the equivalent
feet (meters) for each vent piece used in the system.
Example Vent System
The following example falls within the maximum vent length of
40 ft (12.2 m).
NOTE: The exterior-mounted vent motor requires a separate
wiring cable that should be installed at the same time the vent
work is installed.
Install Vent System
1. Place cardboard or another form of covering on top of a flat
surface where you can easily assemble the downdraft vent
system.
2. Remove parts packages and downdraft vent from carton and
set on covered surface.
3. Remove all shipping materials, tape and film from downdraft
vent.
Front Vent Rear Vent
A. Left venting
B. 10" round 90
° elbow
A. Right venting
B. 10" round 90° elbow
A. 10" (25.4 cm) round vent
Vent Length
10" (25.4 cm) round 40 ft (12.2 m)
A
B
B
A
A
A
Vent Piece 10" (25.4 cm) Round
45° elbow 2.5 ft
(0.8 m)
90° elbow 5.0 ft
(1.5 m)
A. External blower motor
B. Straight vent
C. 90° elbows
2 - 90° elbows = 10.0 ft (3 m)
10 ft (3 m) straight = 10.0 ft (3 m)
Length of 10" (25.4 cm) system = 20 ft (6 m)
A
B
C
WARNING
Excessive Weight Hazard
Use two or more people to move and install
downdraft vent.
Failure to do so can result in back or other injury.