Maximum Length of Vent System
Vent
6" (15.2 cm) round
3¹⁄₄" x 10" (8.3 cm x 25.4 cm)
To calculate the length of the system you need, add the equivalent
feet (meters) for each vent piece used in the system.
Vent Piece
45° elbow
90° elbow
6" (15.2 cm)
wall cap
3¹⁄₄" x 10" (8.3 cm x 25.4 cm)
to 6" (15.2 cm) transition
6" (15.2 cm) to 3¹⁄₄" x 10"
(8.3 cm x 25.4 cm) transition
3¹⁄₄" x 10" (8.3 cm x 25.4 cm)
to 6" (15.2 cm) 90° elbow
transition
6" (15.2 cm) to 3¹⁄₄" x 10"
(8.3 cm x 25.4 cm) 90° elbow
transition
Example Vent System
C
B
A
D
A. Blower motor
B. Transition
C. 90° elbows
D. 6" backdraft damper (supplied)
Length
35 ft (8.9 m)
35 ft (8.9 m)
6" (15.2 cm) Round
2.5 ft
(0.8 m)
5.0 ft
(1.5 m)
0.0 ft
(0.0 m)
4.5 ft
(1.4 m)
1 ft
(0.3 m)
5.0 ft
(1.5 m)
5.0 ft
(1.5 m)
6 ft
(1.8 m)
2 ft (0.6 m)
The following example falls within the maximum vent length of
35 ft (8.9 m).
2 - 90° elbow
1 - wall cap
8 ft (2.4 m) straight
Transition
Length of 6" (15.2 cm) system
Install Vent System
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.
1. Place cardboard or similar material on top of a flat surface
where you can easily assemble the downdraft vent system.
2. Remove parts packages, downdraft vent and blower box from
the carton.
3. Remove all shipping materials, tape and film from the
downdraft vent and blower box.
4. Remove screws from each side of the vent. Attach the left and
right side overcounter support brackets to the downdraft vent
and push up to align the screw holes. Use screws to secure
the brackets.
B
A. Overcounter support bracket
B. Blower motor box
C. Overcounter support bracket screw
5. Attach the left and right side end caps to the downdraft vent.
Place the end cap upon the overcounter support, slide the tab
into the slot and snap into place over the plastic tabs.
A. End cap
= 10.0 ft (3 m)
= 0.0 ft (0.0 m)
= 8.0 ft (2.4 m)
= 4.5 ft (1.4 cm)
= 22.5 ft (6.8 m)
A
C
A
9