Install The Ductwork; Install Support System - Broan BEST ISER222WH Manual

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.
ROOF CAP
HOOD
24" TO 30" ABOVE
COOKING SURFACE
DRYWALL
7
10 / "
8
WASHERS
(Ø6.4mm)
HEIGHT
ADJUSTMENT
SLOTS
TOP VIEW OF SUPPORT FRAME
- 5 -
8" ROUND
DUCT
8" ROUND
ELBOW
EAVE
VENT
DECORATIVE
FLUE
CROSS FRAMING
CEILING
JOISTS
MOUNTING
SCREWS
(6x70mm)
SUPPORT
FRONT
FRAME
10 7 / "
8
7 13 / "
16