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.
Vent piece | 8" (20.3 cm) round |
45° elbow | 2.5 ft |
| (0.8 m) |
90° elbow | 5.0 ft |
| (1.5 m) |
Maximum equivalent vent length is 35 ft (10.7 m).
Example Vent System
90 elbow |
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2ft
(0.6 m)
The following example falls within the maximum vent length of 35 ft (10.7 m).
1 | - 90° elbow | = 5.0 ft (1.5 m) |
1 | - wall cap | = 0.0 ft (0.0 m) |
8 ft (2.4 m) straight | = 8.0 ft (2.4 m) | |
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System length | = 13 ft (3.9 m) | |
Electrical Requirements
Observe all governing codes and ordinances.
Ensure that the electrical installation is adequate and in conformance with National Electrical Code, ANSI/NFPA 70 (latest edition), or CSA Standards
If codes permit and a separate ground wire is used, it is recommended that a qualified electrician 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, OH
■A 120 Volt, 60 Hz., AC only,
■If the house has aluminum wiring, follow the procedure below:
1.Connect a section of solid copper wire to the pigtail leads.
2.Connect the aluminum wiring to the added section of copper wire using special connectors and/or tools designed and UL listed for joining copper to aluminum.
Follow the electrical connector manufacturer's recommended procedure. Aluminum/copper connection must conform with local codes and industry accepted wiring practices.
■Wire sizes and connections must conform with the rating of the appliance as specified on the model/serial rating plate. The model/serial plate is located behind the filter on the rear wall of the range hood.
■Wire sizes must conform to the requirements of the National Electrical Code, ANSI/NFPA 70 (latest edition), or CSA Standards C22.
INSTALLATION INSTRUCTIONS
Prepare Location
■It is recommended that the vent system be installed before the range hood is installed.
■Before making cutouts, make sure there is proper clearance within the ceiling for exhaust vent.
■Range hood is to be installed 24" (61.0 cm) min. for electric cooking surfaces or 27" (68.6 cm) min. for gas cooking surfaces to suggested maximum of 36" (91.2 cm) above the cooking surface.
■Check your ceiling height and the range hood height maximum before you select your hood.
1.Disconnect power.
2.Determine which venting method to use: roof, wall or non- vented.
3.Select a flat surface for assembling the range hood. Place covering over that surface.
WARNING
Excessive Weight Hazard
Use two or more people to move and install range hood.
Failure to do so can result in back or other injury.
4.Using 2 or more people, lift range hood onto covered surface.
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