For Best Performance:
■Do not install 2 elbows together.
■Use no more than three 90° elbows.
■If an elbow is used, install it as far away as possible from the hood’s vent motor exhaust opening.
■Make sure there is a minimum of 24" (61 cm) of straight vent between the elbows if more than one elbow is used.
The length of vent system and number of elbows should be kept to a minimum to provide efficient performance.
Cold Weather Installations
An additional backdraft damper should be installed to minimize backward cold air flow and a nonmetallic thermal installed to minimize conduction of outside temperatures as part of the vent system. The damper should be on the cold air side of the thermal break.
Makeup Air
Local building codes may require the use of makeup air systems when using ventilation systems with greater than specified CFM of air movement. The specified CFM varies from locale to locale. Consult your HVAC professional for specific requirements in your area.
Example vent system
wall cap
90˚ elbow
6 ft (1.8 m)
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) |
|
|
System length | = 13 ft (3.9 m) |
|
|
NOTE: Flexible vent is not recommended. Flexible vent creates back pressure and air turbulence that greatly reduce performance.
Venting Methods
This range hood is factory set for vented installations. Vent system can terminate through either the roof or wall. A
6" (15.2 cm) round vent system must be used. The vent system length should not exceed 35 ft (10.7 m).
Electrical Requirements
IMPORTANT: Observe all governing codes and ordinances. Save Installation Instructions for electrical inspector’s use.
It is the customer’s responsibility to contact a qualified electrical installer, and to assure that the electrical installation is adequate and in conformance with National Electrical Code, ANSI/NFPA 70
Option 1 - Roof Venting
B
A |
Option 2 - Wall Venting
A
B
(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 |
required. |
A. 6" (15.2 cm) round roof | A. 6" (15.2 cm) round wall |
venting | venting |
B. Roof cap | B. Wall cap |
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 | 6" (15.2 cm) round |
45° elbow | 2.5 ft (0.8 m) |
90° elbow | 5.0 ft (1.5 m) |
■ 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. |
■ Wire sizes (copper wire only) and connections must conform |
with the rating of the appliance as specified on the model/ |
serial rating plate. |
■ Wire sizes must conform to the requirements of the National |
Electrical Code, ANSI/NFPA 70 (latest edition), or CSA |
Standards C22. |
C22.2 No. |
ordinances. |
■ A ¹⁄₂" (12.7 mm) UL listed or CSA approved strain relief must |
be provided at each end of the power supply cable (at the |
range hood and at the junction box). |
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