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Venting methods
This canopy range hood is factory set for
vertical venting. For rear vent applications, the
blower must be turned inside the range hood so
that the blower vents to the rear as indicated.
The blower is turned by removing two screws
on each side of the blower, rotating the blower
with the exhaust opening facing the rear and
then replacing the screws.The exhaust cover(s)
must be moved to block the unused opening(s).
The blower must be converted before installing
the range hood.
Vent system needed for installation is not
included. The 36" (91.4 cm) and 42" (106.7 cm)
models have one exhaust opening. 3-1/4" x 10"
(8.3 cm x 25 cm) rectangular, 7" (17.8cm) round,
8" (20.3 cm) round, 9" (22.9 cm) round, or 10"
(25.4 cm) round vent may be used.The hood
exhaust opening is 3-1/4" x 10" (8.3 cm x 25 cm).
The 48" (121.9 cm) model has two 3-1/4" x 10"
(8.3 cm x 25 cm) exhaust openings. It is
recommended thatVentTransition
Kit No.
8284757 be used to transition the two openings
into one 10" (25.4 cm) round vent. (Cannot be
used with Chimney Extension Kit No. 8284754.)
Vent system can terminate either through the
roof or wall.
The vent system length should not exceed the
lengths shown in the chart.
Vertical
venting
roof cap
3-1/4"
x 10"
(8.3 cmx
25 cm
vertical ventin
(roof or wall)
Horizontal
venting
3-1/4"
x 10"
(8.3 cmx 25 crr
horizontal
venting
wall cap
Vent size
Maximum length
3-1/4" x 10" (8.3 cm x 25 cm) 35 ft. (10.7 m)
7" (17.8cm) round
40 ft. (12.2 m)
8" (20.3 cm) round
50 ft. (15.2 m)
9" (22.9 cm) round
60 ft. (18.3 m)
10" (25.4 cm) round
60 ft. (18.3 m)
Calculating the vent system length
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 cm 7" (178 cm), 8" (20.3 cm),
Rectangular
9" (22.9 cm), 10" (25.4 cm)
Round
45° elbow
90° elbow
"/0 feet
(2.1 m)
5.0 feet
(1.8 m)
90° flat elbow
12.0 feet
(3.7 m)
transition to round
5.0 feet
(1.5 m)
wall cap
0.0 feet
(0.0 m)
4
2.5 feet
(0.8 m)
5.0 feet
(1.5 m)
Example for 3-1/4" x 10"
(8.3 cm x 25 cm) vent system
3-1/4"
x 10"
wall
(8.3 cm x 25 cm)
cap
elbow
2"
102!m,__
Maximum length
1 -- 90° elbow
8 ft. (2.4 m) straight
1 -- wall cap
Length of 3-I/4" x 10"
(8.3 cm x 25 cm)
system
= 35 ft. (10.7 m)
= 5ft.
(1.5m)
= 8ft.
(2.4m)
= Oft.
(Om)
=13ft.
(4m)
Note: Flexible vent is Not
recommended.
Flexible vent creates back pressure
and air turbulence that greatly
reduces performance.
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