Best ISER222 - Manual (Page 5)

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INSTALL THE DUCTWORK
NOTE: To reduce the risk of fire, use only
metal ductwork.
1. Decide where the ductwork will run between
the hood and the outside.
2. A straight, short duct run will allow the hood
to perform most efficiently.
3. Long duct runs, elbows, and transitions will
reduce the performance of the hood. Use as
few of them as possible.
4. Install a roof or wall cap. Connect 8" round
metal ductwork to cap and work back to-
wards hood location. Use duct tape to seal
the joints between ductwork sections.
INSTALL SUPPORT SYSTEM
1. At hood location, install 2 x 4 cross framing
between ceiling joists using dimensions
shown.
2. Finish the ceiling surface. Be sure to mark
the location of the ceiling joists and cross
framing.
3. Position the support frame so that the
support frame opening is on the long side
of the hood.
4. Secure the upper half of support frame to
joists and cross framing with four screws
(6x70mm) and four washers (D.6.4mm).
Make sure screws are driven into center of
joists and framing for maximum strength.
5. Adjust the overall height of the support frame.
Loosen and re-tighten the 4 screws in the
height adjustment slots as necessary.
Insert 4 screws (3.9x9.5mm) and 4 washers
(D.4.5mm) located in the Hardware
Package. Note that #4 screws and #4
washers can be located on the front, and #4
screws and #4 washers can be located on
the opposite face (rear).
Note that the hood height is 13¾” and that
the bottom of the hood must be 24” min. and
30” max. above the cooktop.
TOP VIEW OF SUPPORT FRAME
10 7 /
8
”
7 13 /
16
”
ROOF CAP
EAVE
VENT
8” ROUND
ELBOW
24” TO 30” ABOVE
COOKING SURFACE
8” ROUND
DUCT
DECORATIVE
FLUE
HOOD
CEILING
JOISTS
CROSS FRAMING
FRONT
HEIGHT
ADJUSTMENT
SLOTS
SUPPORT
FRAME
10 7 /
8
”
DRYWALL
MOUNTING
SCREWS
(6x70mm)
WASHERS
(Ø6.4mm)