Cavaliere SV218F-36 Instruction Manual Page 8

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Page 6
Duct Run Calculation:
Recommended maximum run
6” or 3-1/4 x 10” duct 50 ft
Vent piece deduction
Each 90º elbow used 9 ft
Each 45º elbow used 5 ft
Each 6” to 3/14 x 10” transition used 7 ft
Side wall cap with damper 0 ft
Roof cap 0 ft
Duct Run Calcuation example:
One roof cap, two 90º elbow, and one 45º elbow used:
0ft + 9ft + 9ft + 5ft = 23ft used.
Deduct 23ft from 50ft, 27ft maximum available for
straight duct run.
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.
Calculating Vent System Length
IMPORTANT:
A minimum of 6” round (standard for this range hood) or 3-1/4 x 10” rectangular duct (purchased separately)
must be used to maintain maximum airow efciency.
Flexible 6” round duct provided for convenience, always use rigid type metal/aluminum ducts if available to
maximize airow when connecting to provided duct.
Please use Duct Run Calculation below to compute the total available duct run when using elbows, transitions
and caps.
ALWAYS, when possible, reduce the number or transitions and turns. If long duct run is required, increase
duct size from 6” to 7” or 8”. If a reducer is used, install a long reducer instead of a pancake reducer. Reduc-
ing duct size will restrict airow and decrease airow, thus reduce duct size as far away from opening as pos-
sible.
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 28-inch*.
Maximum mount height between stove top to hood bottom should be no higher than 31-inch*.
It is important to install the hood at the proper mounting height. Hoods mounted too low could result in heat
damage and re hazard; while hoods mounted too high will be hard to reach and will loose its performance
and efciency.
If available, also refer to stove top manufacturers height clearance requirements and recommended hood
mounting height above range.
* Due to different ceiling height congurations, recommended height may not be applicable.
Minimum Duct Size:
Round - 6” minimum
Rectangular - 3-1/4 x 10” minimum (requires a 6” to 3-1/4x10” adaptor, not supplied)
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