Best CC34ISB Mode D'emploi page 7

INSTALL THE DUCTWORK
WARNING: To reduce the
risk of fire, use only metal duc-
twork.
1. Decide where the ductwork will
run between the hood and the
outside. Fig. 4.
2. A straight, short duct run will
allow the hood to perform most
efficiently.
3. Long duct runs, elbows, and
transitions will reduce the per-
formance of the hood. Use as
few of them as possible. Larger
ducting may be required for
best performance with longer
duct runs.
4. Install a roof cap, wall cap, or under-eave vent. Connect round metal ductwork to cap/vent
and work back towards hood location. Use duct tape to seal the joints between ductwork
sections.
5. The blower can be rotated according to the air outlet location. Fig. 7.
PREPARE THE CEILING
OPENING
The hood should always be centered over the
cooktop. Make sure there is adequate space
in the ceiling structure to install the hood and
ductwork. The hood should be mounted 48"
to 72" above the cook top for best removal of
cooking impurities. Fig 4.
Use joist size lumber to frame in around the
range hood opening. The ceiling structure
must be able to support the weight of the
hood (64 pounds). Fig 5.
ROOF CAP
6" ROUND
DUCT
HOOD
48" TO 72" ABOVE
COOKING SURFACE
DOUBLE HEADERS
- 7 -
6" ROUND
DUCT
6" ROUND
TO 3¼" X 10"
REDUCER
3¼" X 10"
UNDER
EAVE
VENT
FIG. 4
FIG. 5