SEDONA BY LYNX™ VENT HOOD CARE & USE/INSTALLATION
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11
Ventilator Discharge
Port Types & Sizes
Duct Type Required
Duct Size
(in Square Inches)
Minimum Discharge
Size of Roofcap or
Wallcap Outside
Opening
6” Diameter, Round
28.3”
6” Round Metal Duct
28.3”
28.3”
7” Diameter, Round
38.5”
7” Round Metal Duct
38.5”
38.5”
8” Diameter, Round
50.25”
8” Round Metal Duct or
6” x 9” Rectangular Metal Duct
50.25”
54”
50.25”
54”
10” Diameter, Round
78.5”
10” Round Metal Duct
78.5”
78.5”
3.25” x 10” Rectangular
32.5”
3.25” x 10” Rectangular Metal Duct
32.5”
32.5”
Radius x Radius
x 3.1416 =
Area (Sq.
Inches)
Formulas for Calculating Square Inches of Various Duct Sizes and Types
The “radius” is one-half the diameter of a round duct, e.g., 1/2”
of a 10” round duct is 5”. 3.1416 is “Pi” the “constant” used
when calculation the area of a circle.
Width x
Depth
=
Area (Sq. Inches)
Round Duct Rectangular Duct
CARE AND USE
...continued
7.
Duct Sizing Chart and Area Calculations
8.
Best Smoke Capture Recommendations
Smoke and hot air from an Outdoor BBQ Grill rises quickly, especially as the BBQ lid is opened. Not only does
the smoke rise fast, but it is usually deflected forward (toward the cook) beyond the BBQ hood’s capture area by
the shape and position of the BBQ lid itself. Heavy, fast rising smoke is a challenge even for high-performance
vent hoods, but there are some things you can do to enhance your outdoor vent hood’s performance.
a.
Install the hood at least 30”, but no more than 44”
above the cooking surface. If the hood is installed more than
44” above the cooking surface, its’ smoke capture ability
declines rapidly. See Drawing A.
b.
Since smoke also expands as it rises, the hood’s sides
and front edge should extend 3” – 6” beyond the front and
sides of the cooking surface—see Drawing B. In this example,
the hood is attached to a built-out section of the wall or to a
chase.
It is unlikely that smoke rising past the bottom of the vent hood
will be captured by the hood. Smoke escaping the hood’s
capture area will typically remain against the ceiling until it is
blown out by natural air currents or until it dissipates.
c.
Turn the hood on high 2 -3 minutes prior to placing
food on the grill. If there is no wind or wind drafts, an upward
flowing air “curtain” will be created by the hood’s suction that
moves air up the sides and front of the cooking surface. This
upward moving air curtain will help capture much of the smoke.
d.
Wind and wind drafts will also negatively affect the
capture ability of high-performance outdoor vent hoods. If
the BBQ grill is located in a consistently windy area, e.g., near
oceans, large lakes or on hillside properties, for best vent hood
performance, a wind-break may be required.
A
B
30”- 44”
6”
6”
30”- 44”
35320 Sedona Vent Hood Care and Use 2017.indd 11
2/16/2018 4:00:20 PM
