10
To calculate the length of the system you need, add the
equivalent feet (meters) for each vent piece used in the system.
Vent Piece
3
1
/
4
" x 10" (8.3 cm x 25.4 cm)
Rectangular
3
1
/
4
" x 10" (8.3 cm x 25.4 cm)
90° elbow
5.0 ft
(1.5 m)
3
1
/
4
" x 10" (8.3 cm x 25.4 cm)
flat elbow
12.0 ft
(3.7 m)
3
1
/
4
" x 10" (8.3 cm x 25.4 cm)
wall cap
0.0 ft
(0.0 m)
Vent Piece
6" (15.2 cm) Round
45° elbow
2.5 ft
(0.8 m)
90° elbow
5.0 ft
(1.5 m)
6" (15.2 cm) wall cap
0.0 ft
(0.0 m)
3
1
/
4
" x 10" (8.3 cm x 25.4 cm)
to 6" (15.2 cm) transition
4.5 ft
(1.4 m)
6" (15.2 cm) to 3
1
/
4
" x 10"
(8.3 cm x 25.4 cm) transition
1 ft
(0.3 m)
3
1
/
4
" x 10" (8.3 cm x 25.4 cm)
to 6" (15.2 cm) 90° elbow
transition
5.0 ft
(1.5 m)
6" (15.2 cm) to 3
1
/
4
" x 10"
(8.3 cm x 25.4 cm) 90° elbow
transition
5.0 ft
(1.5 m)
Example Vent System
The following example falls within the maximum vent length
of 35 ft (8.9 m).
2 - 90° elbow
= 10.0 ft (3 m)
1 - wall cap
= 0.0 ft (0.0 m)
8 ft (2.4 m) straight
= 8.0 ft (2.4 m)
Transition
= 4.5 ft (1.4 m)
Length of 6" (15.2 cm) or 3
1
/
4
" x 10"
(8.3 cm x 25.4 cm) system
= 22.5 ft (6.8 m)
Install Vent System
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. Measure distance “X” from the cabinet floor to the top of the
countertop. Subtract 28
1
/
2
" (72.4 cm) from distance “X” to
determine dimension “Y” (X - 28
1
/
2
" = Y).
A
B
C
6 ft
(1.8 m)
2 ft (0.6 m)
D
A. Blower motor
B. Transition
C. 90° elbows
D. Back draft damper
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.
Cabinet floor
Top of countertop
Downdraft vent
“X”
“Y”
28
¹⁄₂
"
(73 cm)
