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INSTALLATION MANUAL
INSTALLATION
11
DUCTED INSTALLATION ONLY
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.
8 ] 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 FIGURES 1 A and 1 B).
NOTE: To accommodate off-center ductwork, the 7” round duct plate can be installed up
to 1/2” on either side of the hood center.
7” ROUND KNOCKOUT
PLATE (ALSO REMOVE
3¼” X 10” VERTICAL
KNOCKOUT PLATE)
3¼” X 10”
VERTICAL
KNOCKOUT
PLATE
3¼” X 10”
HORIZONTAL
KNOCKOUT
PLATE
FIGURE 1 A
FIGURE 3
3¼” X 10”
DAMPER
ASSEMBLY
TOP/BACK
EDGE OF
HOOD
DAMPER
FLAP
PIVOT
SCREWS
FIGURE 2 A FIGURE 2 B
9 ] Using the screws previously removed in step 2, attach 3¼” x 10” Damper Assembly on top
OR back of hood (if using 3¼” x 10” duct; shaded part in FIGURE 2 A below) or 7” Round Duct
Plate (if using 7-inch round duct, FIGURE 3) over the knockout opening. When installed, the
3¼” x 10” damper assembly must open as shown in FIGURE 2 B.
FIGURE 1 B
3¼” X 10”
DAMPER
ASSEMBLY
BACK OF
HOOD
DAMPER
FLAP
PIVOT
SCREWS
7” ROUND
DUCT
PLATE
2 SCREWS
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