Broan Alta ALT4 Series Installation Use And Care Manual page 12

7 ] Remove 3 screws retaining the recirculation cover plate to the hood. Discard this plate with
12
TIP: Insert a small length of duct over the 3¼" x 14" damper assembly and seal the joint using
NON-DUCTED INSTALLATION ONLY
its screws. Peel off and discard the membrane covering the recirculation grille, ensuring
the openings are totally cleared.
SCREWS
RECIRCULATION
COVER PLATE
3¼" x 14" DUCTED INSTALLATION ONLY
8 ] Remove 3¼" x 14" vertical or 3¼" x 14" horizontal knockout plate as appropriate for
your ducting method (see F
F 1 A
IGURE
3¼" 14"
X
VERTICAL
KNOCKOUT
PLATE
9 ] Attach 3¼" x 14" Damper Assembly on top OR back of hood over the knockout opening.
When installed, the 3¼" x 14" damper assembly must open as shown in F
F 2 A
IGURE
SCREWS
SCREWS
aluminum foil duct tape to ease connection with the house ductwork.
1 A and 1 B).
IGURES
F 1 B
IGURE
3¼" 14"
X
HORIZONTAL
KNOCKOUT
PLATE
F 2 B
IGURE
3¼" 14"
X
DAMPER
ASSEMBLY
TOP/BACK
EDGE OF
HOOD
3¼" 14"
X
DAMPER
ASSEMBLY
2 B.
IGURE
DAMPER
FLAP
PIVOT
BACK OF
HOOD
DAMPER
FLAP
PIVOT