Danby DOM161KBLSDD User Manual download pdf (Page 36)

INSTALLATION INSTRUCTIONS

EXHAUST CONNECTION

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

length of 31/4’’ x 10’’ rectangular or 6’’ diameter round duct

should not exceed 140 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 pos-

sible. This ensures clear venting of exhaust and helps pre-

vent blockages. Also, make sure dampers swing freely and

nothing is blocking the ducts.

The hood exhaust has been designed to mate with a stan-

dard 31/4’’ x 10’’ rectangular duct. If a round duct is

required, a rectangular-to-round transition adaptor must be

used. Do not use less than a 6’’ diameter duct.

MAXIMUM DUCT LENGTH

For satisfactory air movement, the total duct length of

31/4’’ x 10’’ rectangular or 6’’ diameter round duct should

not exceed 140 equivalent feet.

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

adaptors 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.

ELBOWS, TRANSITIONS, WALL

AND ROOF CAPS ETC..,

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

Transition Adaptor*

W all 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 = F t.

DUCT PIECES

EQUIVALENT

LENGTH

NUMBER

USED

EQUIVALENT

LENGTH

* IMPORTANT: If a rectangular-to-round transition adaptor 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.

Equivalent lengths of duct pieces are based on actual

tests and reflect requirements for good venting per-

formance with any vent hood.

Rectangular-to-Round

Transition Adaptor*

5 Ft. x ( ) = Ft.

Wall Cap

40 Ft. x ( ) = Ft.

Elbow

10 Ft. x ( ) = Ft.

45 Degree Elbow

5 Ft. x ( ) = Ft.

90 Degree Elbow

25 Ft. x ( ) = Ft.

45 Degree Elbow

5 Ft. x ( ) = Ft.

Roof Cap

24 Ft. x ( ) = Ft.

Straight Duct 6’’ Round or

31/4’’ x 10’’ Rectangular

1 Ft. x ( ) = Ft.

Total Ductwork

Ft.=

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Danby DOM161KBLSDD User Manual Page 36

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