Installation Guide

 31-2000900 Rev. 0
Installation Preparation
DUCT FITTINGS
This Hood Must Use an
” Round Duct.
It Can Transition to a
3-1/4” x 12” Duct.
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permissible lengths for duct runs to
outdoors.
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permissible equivalent lengths!
Maximum duct length:
100 ft. for range hoods.
Flexible ducting:
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the equivalent feet values in the
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metal duct should be straight and
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possible.
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may interrupt the proper flow of
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water heaters and other naturally
vented systems. To minimize the
chance of interruption of such
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heating equipment manufacturer’s
guidelines and safety standards
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install any makeup (replacement)
air system in accordance with
local building code requirements.
Visit Monogram.com for available
makeup air solutions.
Equivalent
Duct Piece Dimensions
Equivalent
Length*
Quantity
Used
Total
Equivalent
Length
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(per foot length)
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(per foot length)
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43 ft.
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2 ft.
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round transition
5 ft.
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13 ft.
Round wall cap
with damper
32 ft.
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with damper
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Round roof cap 44 ft
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length of duct pieces are based on actual tests conducted by
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good venting performance with any ventilation hood.
Total Duct Run