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IMPORTANT:
•
A minimum of a 6" round duct (standard for this range hood) must be used to maintain maximum airflow
efficiency.
•
Always use rigid type metal/aluminum ducts if available to maximize airflow when connecting to provided
duct.
•
Please use Duct Run Calculation below to compute total available duct run when using elbows, transitions
and caps.
•
ALWAYS, when possible, reduce the number or transitions and turns in the duct run. If a long duct run is
required, increase the duct size from 6" to 8". If a reducer is used, install a long reducer instead of a pancake
reducer. Reducing the duct size will restrict airflow and decrease efficiency.
•
If turns or transitions are required: Install as far away from opening and as far apart, between 2, as possible.
•
Minimum mount height between stove top to hood bottom should be no less than 27-inch*.
•
Maximum mount height between stove top to hood bottom should be no higher than 36-inch*.
•
It is important to install the hood at the proper mounting height. Hoods mounted too low could result in heat
damage and fire hazard; while hoods mounted too high will be hard to reach and will loose its performance
and efficiency.
•
If available, also refer to stove top manufacturer's height clearance requirements and recommended hood
mounting height above range.
* Due to different ceiling height configurations, recommended height may not be applicable.
Minimum Duct Size:
•
Round - 6" minimum
•
Rectangular - 3-1/4" x 10" minimum
Calculating Vent System Length
To calculate the length of the system you need, deduct the equivalent feet for each vent piece used in the system
from the recommended maximum duct run.
Duct Run Calculation:
6" round duct
Each 90º elbow used
Each 45º elbow used
Each 6" to 3/14 x 10" transition used
Side wall cap with damper
Roof/ Wall Cap
Recommended maximum run
Vent piece deduction
Duct Run Calcuation example:
50 ft
One roof cap, two 90º elbows, and one 45º elbow used:
7ft + 9ft + 9ft + 5ft = 30ft used.
The above vent pieces used are equivalent to 30ft of a
9 ft
straight duct run. Subtract 30ft from the allowable 50ft.
5 ft
7 ft
7 ft
7 ft
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