5
Installation Instructions
HOOD EXHAUST
NOTE:
Read these next two pages only if you plan to vent your exhaust to the outside. If you plan to recirculate the air
back into the room, proceed to page
6.
Below are examples of Outside Top Exhaust and Outside Back Exhaust duct system
layouts. Note the position of the microwave oven relative to the duct system.
OUTSIDE TOP EXHAUST (EXAMPLE ONLY)
EQUIVALENT
NUMBER
EQUIVALENT
DUCT PIECES
LENGTH x
USED
=
LENGTH
Roof Cap
24 Ft. x
(1)
=
24 Ft.
12 Ft. Straight Duct
12 Ft. x
(1)
=
12 Ft.
(6
″
Round)
Rectangular-to-Round 5 Ft.
x
(1)
=
5 Ft.
Transition Adaptor*
Equivalent lengths of duct pieces are based on actual tests and
reflect requirements for good venting performance with any vent hood.
Total Length
=
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.
The following chart describes an example of one possible
ductwork installation.
The following chart describes an example of one possible
ductwork installation.
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.
OUTSIDE BACK EXHAUST (EXAMPLE ONLY)
EQUIVALENT
NUMBER
EQUIVALENT
DUCT PIECES
LENGTH* x
USED
=
LENGTH
Wall Cap
40 Ft. x
(1)
=
40 Ft.
3 Ft. Straight Duct
3 Ft.
x
(1)
=
3 Ft.
(3
1
⁄
4
″
x 10
″
Rectangular)
90° Elbow
10 Ft. x
(2)
=
20 Ft.
Equivalent lengths of duct pieces are based on actual tests and
reflect requirements for good venting performance with any vent hood.
Total Length
=
63 Ft.
1” = 2.5 cm; 1’ = 0.3 m
