Venting methods
This canopy range hood is factory set for venting through the roof or wall. For non- vented (recirculating) installations, see
Vent system needed for installation is not included.
(20.3 cm) round or 9" (22.9 cm) round vent may be used. The hood exhaust opening is
Vent system can terminate either through the roof or wall. To vent through a wall, a 90° elbow is needed.
The vent system length should not exceed the lengths shown in the chart below.
Vent size | Maximum length |
35 ft. (10.7 m) | |
(8.3 cm x 25 cm) |
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7" (17.8 cm) round | 40 ft. (12.2 m) |
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8" (20.3 cm) round | 50 ft. (15.2 m) |
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9" (22.9 cm) round | 60 ft. (18.3 m) |
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Vertical roof venting
roof cap
(8.3 cm x 25 cm) through the roof
Note:
Horizontal wall venting
(8.3 cm x 25 cm) through the wall
wall cap
Calculating the vent system length
To calculate the length of the system you need, add the equivalent feet for each vent piece used in the system.
Vent Piece | 7" (17.8 cm), 8" (20.3 cm) | |
| Rectangular | or 9" (22.9 cm) Round |
45° elbow | 7.0 feet | 2.5 feet |
| (2.1 m) | (0.8 cm) |
90° elbow | 5.0 feet | 5.0 feet |
| (1.5 m) | (1.5 m) |
90° flat elbow | 12.0 feet |
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| (3.7 m) |
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transition to round | 5.0 feet |
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| (1.5 m) |
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wall cap | 0.0 feet |
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| (0.0 m) |
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vent system
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(8.3 cm x 25 cm) |
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elbow |
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| 6 ft. (1.8 m) |
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2ft.
(0.6 m)
Maximum length | = 35 ft. (10.7 m) | ||
1 — 90° elbow | = | 5 ft. | (1.5 m) |
8 ft. (2.4 m) straight | = | 8 ft. | (2.4 m) |
1 — wall cap | = | 0 ft. | (0 m) |
Length of |
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(8.3 cm x 25 cm) |
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system | = 13 ft. | (4 m) | |
Note: Flexible vent is Not recommended.
If it is used, each foot of flexible vent used is equivalent to two feet
(61 cm) of straight metal vent when calculating the vent system length. (Example: A flexible elbow equals two standard elbows.)
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