Calculating 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.
Maximum equivalent vent length is 35 feet (10.7 meters).
| Vent piece | 6" (15.2 cm) round |
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| 45° elbow | 2.5 feet |
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| (0.8 m) |
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| 90° elbow | 5.0 feet |
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| (1.5 m) |
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90° elbow | 6 ft. (1.8 m) |
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| wall cap |
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| Example vent | |
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2 ft. | 1 — 90° elbow | = | 5 ft. | (1.5 m) | |
(0.6 m) | 8 ft. (2.4 m) straight | = | 8 ft. | (2.4 m) | |
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| 1 — wall cap | = | 0 ft. | (0 m) | |
| system length | = | 13 ft. | (3.9 m) |
NOTE: Flexible vent is not recommended. Flexible vent creates back pressure and air turbulence that gently reduce performance.
Electrical Requirements
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
IMPORTANT: The hood must be electrically grounded in accordance with local codes and ordinances, or in the absence of local codes, with the National Electrical Code, ANSI/NFPA 70, latest edition, or Canadian Electrical Code, CSA C22.1.
If codes permit and a separate ground wire is used, it is recommended that a qualified electrical installer determine that the ground path is adequate.
A copy of the above code standards can be obtained from:
National Fire Protection Association
One Batterymarch Park, Quincy, MA 02269
CSA International
8501 East Pleasant Valley Road
Cleveland, Ohio
■A
■Do not ground to a gas pipe.
■Check with a qualified electrician if you are not sure range hood is properly grounded.
■Do not have a fuse in the neutral or ground circuit.
■The range hood must be connected with copper wire only.
■The range hood should be connected directly to the fused disconnect (or circuit breaker) box through flexible armored or nonmetallic sheathed copper cable.
■A UL- or
■Wire sizes must conform to the requirements of the National Electrical Code, ANSI/NFPA 70, latest edition, or CSA Standards
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