10
DUCTED INSTALLATIONS ONLY
7. Remove 3¼” x 10” vertical, 3¼” x 10” horizontal (both are the rectangular
central
knockout plates, see hatched
areas), or 7-inch round knockout plate as appropriate for your ducting method (see
F
IGURES
1 A
and
1 B
).
3¼”
X
10”
DAMPER
ASSEMBLY
SCREWS
3¼”
X
10”
DAMPER
ASSEMBLY
SCREWS
7” ROUND
KNOCKOUT PLATE
(
ALSO
REMOVE
VERTICAL
KNOCKOUT
PLATE
)
3¼”
X
10”
VERTICAL
KNOCKOUT
PLATE
3¼”
X
10”
HORIZONTAL
KNOCKOUT
PLATE
F
IGURE
1 A
F
IGURE
1 B
NOTE: To accommodate o
ff
-center ductwork, the 7” round duct plate can be installed up to 1/2” on either side of
the hood center.
7” ROUND
DUCT
PLATE
SCREWS
F
IGURE
3
F
IGURE
2 A
TOP/BACK
EDGE OF
HOOD
DAMPER
FLAP
PIVOT
F
IGURE
2 B
BACK OF
HOOD
DAMPER
FLAP
PIVOT
8. Attach 3¼” x 10” Damper Assembly on top OR back of hood (if using 3¼” x 10” duct; shaded part in
F
IGURE
2 A
)
or 7” Round Duct Plate (if using 7-inch round duct,
F
IGURE
3
) over the knockout opening. When installed, the 3¼” x 10”
damper assembly must open as shown in
F
IGURE
2 B
.
TIP
: Insert a small length of duct over the 3¼” x 10” damper assembly (for rectangular ducting) or 7” round (for round
ducting) and seal the joint using aluminum foil duct tape to ease connection with the house ductwork.