GE JVM2052 User Manual download pdf (Page 5)

EQUIVALENT NUMBER EQUIVALENT

DUCT PIECES LENGTH x USED = LENGTH

Rectangular-to-Round 5 Ft. x ( ) = Ft.

Transition Adapter*

Wall Cap 40 Ft. x ( ) = Ft.

90° Elbow 10 Ft. x ( ) = Ft.

45° Elbow 5 Ft. x ( ) = Ft.

90° Elbow 25 Ft. x ( ) = Ft.

45° Elbow 5 Ft. x ( ) = Ft.

Roof Cap 24 Ft. x ( ) = Ft.

Straight Duct 6" Round or 1 Ft. x ( ) = Ft.

⁄4" x 10" Rectangular

Total Ductwork = Ft.

Equivalent lengths of duct pieces are based on actual tests

and reflect requirements for good venting performance with

any vent hood.

* IMPORTANT: If a rectangular-to-round transition

Adapter is used, the bottom corners of the damper

will have to be cut to fit, using the tin snips, in order

to allow free movement of the damper

NOTE: If you need to install ducts, note that the total duct

length of 3

⁄4" x 10" rectangular or 6" diameter round duct

should not exceed 120 equivalent feet.

Outside ventilation requires a HOOD EXHAUST DUCT.

Read the following carefully.

NOTE: It is important that venting be installed using

the most direct route and with as few elbows as possible.

This ensures clear venting of exhaust and helps prevent

blockages. Also, make sure dampers swing freely

and nothing is blocking the ducts.

Exhaust connection:

The hood exhaust has been designed to mate with

a standard 3

⁄4" x 10" rectangular duct.

If a round duct is required, a rectangular-to-round

transition Adapter must be used. Do not use less

than a 6" diameter duct.

Maximum duct length:

For satisfactory air movement, the total duct length

of 3

⁄4" x 10" rectangular or 6" diameter round duct

should not exceed 120 equivalent feet.

Elbows, transitions, wall and roof caps, etc.,

present additional resistance to airflow and are equivalent

to a section of straight duct which is longer than their

actual physical size. When calculating the total duct

length, add the equivalent lengths of all transitions and

adapters plus the length of all straight duct sections.

The chart below shows you how to calculate total

equivalent ductwork length using the approximate

feet of equivalent length of some typical ducts.

Installation Instructions

1 2 3 4 5 6 7 8 9 10 ... 23 24

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GE JVM2052 User Manual Page 5

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