Caloric CVU306C-SS, Use And Installation Manual

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Duct Deductions:
Each 90° bend 9 ft
Each 45° bend 5 ft
Each 6 ” to 3
¼
” x 1 0 ” transition
7 ft
Side wall cap with damper 1 ft
Roof Cap (with factory Damper) 1 ft
•
A minimum of 6 ” round (standard for this range hood) or 3
¼
” x 1 0 ” 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 1 0 ” minimum (requires a n 6 ” to 3
¼
” x 1 0 ” adapter , not supplied)
IMPORTANT:
Pg 6
Height & Clearance
Duct Size Upgrade Calculator
•
Min
imum duct size recommended is 6 ” round (or 3
¼
” x 1 0 ” rectangular). Maximum duct
length recommend is 50 ft. Any duct length over 50 ft is recommended to use a larger
diameter duct size.
• Sur
vey 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 Deduction Calculation Example:
(1)
90° bend, (1) 3
¼
” x 1 0 ” transition, (2) 45°
bends, (1) sidewall cap with damper (with
factory damper not installed)
-9ft + -7ft + -5ft + -5ft + -1ft = -27ft
Deduct 27 ft from 50 ft, giving you 23 ft of
available straight ducting before it is
recommended to upgrade your ducting size.