INSTALLATION INSTRUCTIONS
HOOD EXHAUST
NOTE:
Read these next two pages only if you plan to vent your exhaust to theoutside. If you plan to recirculate the air
back into the room, proceed to page 6.
OUTSIDE TOP EXHAUST (EXAMPLE ONLY)
The following chart describes an example of one possible ductwork installation.
DUCT PIECES
Roof Cap
12 Ft. Straight
Duct (6’’Round)
Rectangular-to-Round
Transition Adaptor*
EQUIVALENT
LENGTH
NUMBER
USED
x
=
24 Ft.
x
(1)
12 Ft.
x
(1)
5 Ft.
x
(1)
=
=
=
EQUIVALENT
LENGTH
24 Ft.
12 Ft.
5 Ft.
Equivalent lengths of duct pieces are based on actual tests
and reflect requirements for good venting performance with
any vent hood.
Total Lenght
=
41 Ft.
* 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.
OUTSIDE TOP EXHAUST (EXAMPLE ONLY)
The following chart describes an example of one possible ductwork installation.
DUCT PIECES
EQUIVALENT
LENGTH
NUMBER
USED
x
=
EQUIVALENT
LENGTH
Wall Cap
3 Ft. Straight Duct
(31/4’’ x 10’’Rectangular)
90 Degrees Elbow
40 Ft.
x
(1)
3 Ft.
x
(1)
10 Ft.
x
(2)
=
=
=
40 Ft.
3 Ft.
20 Ft.
Equivalent lengths of duct pieces are based on actual tests
and reflect requirements for good venting performance with
any vent hood.
Total Lenght
63 Ft.
=
NOTE:
For back exhaust, care should be taken to align exhaust with space between studs, or wall should be prepared at
the time it is constructed by leaving enough space between the wall studs to accommodate exhaust.
4
