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GE Profile PV977NSS Manual Del Propietario E Instrucciones De Instalación página 9

Campanas de ventilación de chimenea para isla

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DUCT FITTINGS
This Hood Must Use an
8" Round Duct. It Can
Transition to a
3-1/4" x 12" Duct.
Use this chart to compute
maximum permissible lengths for
duct runs to outdoors.
NOTE: Do not exceed maximum
permissible equivalent lengths!
Maximum duct length:
100 feet.
Flexible ducting:
If flexible metal ducting is used,
all the equivalent feet values
in the table should be doubled.
The flexible metal duct should
be straight and smooth and
extended as much as possible.
DO NOT use flexible plastic
ducting.
NOTE: Any home ventilation
system, such as a ventilation hood,
may interrupt the proper flow of
combustion air and exhaust
required by fireplaces, gas
furnaces, gas water heaters and
other naturally vented systems.
To minimize the chance of
interruption of such naturally
vented systems, follow the
heating equipment manufacturer's
guidelines and safety standards
such as those published by NFPA
and ASHRAE.
All manuals and user guides at all-guides.com
Installation Preparation
Duct Piece
Dimensions
Round,
straight
3-1/4" x 12"
straight
90° elbow
45° elbow
3-1⁄4" x 12"
90° elbow
3-1/4" x 12"
45° elbow
3-1/4" x 12"
90° flat elbow
8" round to
3-1/4" x 12" transition
3-1/4" x 12" to 8"
round transition
8" round
to 3-1/4" x 12"
transition 90° elbow
3-1/4" x 12" to 8"round
round transition 90° elbow 13 ft.
Round
wall cap
with damper
3-1/4" x 12" wall cap
with damper
Round
roof cap
*Actual length of straight duct plus duct fitting
equivalent. Equivalent length of duct pieces are
based on actual tests conducted by GE Evaluation
Engineering and reflect requirements for good
venting performance with any ventilation hood.
9
Equivalent
Quantity Equivalent
Length*
Used
1 ft.
(per foot
length)
1 ft.
(per foot
length)
17 ft.
10 ft.
43 ft.
26 ft.
102 ft.
2 ft.
5 ft.
6 ft.
32 ft.
75 ft.
44 ft.
Total Duct Run
Total
Length

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