Caloric CVU306C-SS Manuel D'utilisation Et D'installation page 7

Height & Clearance
IMPORTANT:
• A minimum of 6" round (standard for this range hood) or 3 ¼" x 10" rectangular duct
(not supplied) must be used to maintain maximum airflow efficiency.
• ALWAYS, when possible, reduce the number or transitions and turns. If long duct run is
required, increase duct size. If a reducer is used, install a long reducer instead of a pancake
reducer. Any reductions of duct size will restrict and decrease airflow; to maximize airflow
flow efficiency place any reducers furthest away from any bends or transitions.
• If turns or transitions are required, install them as evenly distanced as possible, and as far
away from the range hood as possible.
• Please use the Duct Size Upgrade Calculator below to compute the total available duct run
when using elbows, transitions and caps.
• It is important to install the hood at the proper mounting height. Hoods mounted too low
are considered unsafe and could result in heat damage and fire hazard; while hoods
mounted too high are harder to reach and will lose general effectiveness.
• Minimum mount height between stove top to hood bottom should be no less than 28". Any
less is considered unsafe and not recommended.
• Maximum mount height between stove top to hood bottom can be higher than 31 inch*, but
it is not recommended due to the loss in efficiency.
• If available, refer to your 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 ¼" x 10" minimum (requires an 6" to 3 ¼" x 10" adapter, not supplied)
Duct Size Upgrade Calculator
• Minimum duct size recommended is 6" round (or 3 ¼" x 10" rectangular). Maximum duct
length recommend is 50 ft. Any duct length over 50 ft is recommended to use a larger
diameter duct size.
• Survey the installation application and record the estimated length of ducting required or
used for that application. Record the number of bends, angle of bends, and/or any
transitional pieces used. Each bend or transition will reduce air flow and reduce the
recommended duct length.
Duct Deductions:
Each 90° bend
Each 45° bend
Each 6" to 3 ¼" x 10" transition
Side wall cap with damper
Roof Cap (with factory Damper)
Duct Deduction Calculation Example:
90° bend, (1) 3¼" x 10" transition, (2) 45°
9 ft
bends, (1) sidewall cap with damper (with
factory damper not installed)
5 ft
-9ft + -7ft + -5ft + -5ft + -1ft = -27ft
7 ft
Deduct 27 ft from 50 ft, giving you 23 ft of
1 ft
available straight ducting before it is
1 ft
recommended to upgrade your ducting size.
Pg 6
(1)