GE JV936 This Hood Must Use 7″ Round Duct. It Can Transition To, 3-1/4″ x 12″ Duct Kit - JXDW1

Total Duct Run

Installation Instructions

DUCT FITTINGS

Use this chart to compute maximum permissable lengths for duct runs to outdoors.

Note: Do not exceed maximum permissable equivalent lengths!

Maximum duct length: 100 foot for vent hoods.

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.

This Hood Must Use 7″ Round

Duct. It Can Transition To

3-1/4″x 12″ Duct

Kit - JXDW1

Order kit JXDW1 if your installation requires horizontal ducting from the top of the hood through the back wall and:

•You have an 8 ft. ceiling and need to use a JXCH Series Chimney Cover, or

•You have a 12″ cabinet or 12″ soffit that the hood is to be mounted beneath.

This kit provides a duct transition

from 7″ round to

31⁄4″ x 10″ rectangular for through-the-wall venting.

Using a smaller diameter duct size

will reduce performance

			Total
	Equivalent	Quantity	Equivalent
Duct Piece Dimensions	Length*	Used	Length
Round,	1 ft.
straight	(per foot
	length)
3 -1⁄4″ x 12″	1 ft.
straight	(per foot
	length)
90° elbow	8 ft.
45° elbow	6 ft.
3 -1⁄4″ x 12″ or
90° elbow	15 ft.
3 -1⁄4″ x 12″ or
45° elbow	9 ft.
3 -1⁄4″ x 12″ or
90° flat elbow	20 ft.
7″ round to
3 -1⁄4″ x 12″
transition	1 ft.
3 -1⁄4″ x 12″ to 7″ round
transition	5 ft.
7″ round to
3-1/4″ x 12″
transition 90° elbow	5 ft.
3 -1⁄4″ x 12″ to 7″ round
transition 90° elbow	15 ft.
Round
wall cap
with damper	30 ft.
3 -1⁄4″ x 12″
wall cap with
damper	30 ft.
7″ Round
roof cap	30 ft.
Round
roof vent	24 ft.

*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.

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