Install Ductwork - Broan CBX1 SERIES Instructions Manual

INSTALL DUCTWORK

(Ducted Hoods Only)
ROOF CAP
SOFFIT
CABINET
HOOD HOOD
18" - 24" ABOVE
COOKING SURFACE
1 Determine whether hood will discharge vertically (3¼" x
10" or 7" Round), or horizontally (3¼" x 10" only).
2 Decide where the ductwork will run between the hood
and the outside.
3 Choose a straight, short duct run to allow the hood to
perform most efficiently. Long duct runs, elbows and
transitions will reduce the performance of the hood. Use
as few of them as possible. Larger ductwork may be
required for best performance with longer duct runs.
4 Install wall cap or roof cap. Connect metal ductwork to
cap and work back towards the hood location. Use duct
tape to seal the joints between ductwork sections.
3¼" X 10" or
7" ROUND DUCT
(For vertical
discharge)
HOUSE WIRING
(Top or Back of hood)
WALL CAP
3¼" X 10" DUCT
(For horizontal discharge)
PREPARE HOOD LOCATION
5 Use the proper diagram below for placement of ductwork
and electrical cutout in cabinet or wall. For a non-ducted
installation, DO NOT cut a duct access hole.
HOOD MOUNTING SCREWS (5)
15 /
13 "(30" hood)
16
CABINET FRONT
CABINET
BOTTOM
5¼"
VERTICAL DUCT
5" ACCESS HOLE
1¼"
WOOD SHIMS
CENTER
(recessed-bottom
LINE
cabinets only)
WOOD SHIMS
(recessed-bottom
cabinets only)
CABINET FRONT
HORIZONTAL DUCT
3¾"
CABINET ACCESS HOLE
BOTTOM
1 /
5
15 /
13 "(30" hood)
16
HOOD
MOUNTING
SCREWS (5)
HOOD MOUNTING SCREWS (5)
15 /
13 "(30" hood)
16
8" DIA.
HOLE
7-IN. ROUND 7-IN. ROUND
DUCT DUCT
ACCESS ACCESS
HOLE HOLE
5"
*
Note the extra wood shim and mounting screw near the
cabinet front, on the cabinet center line.
Install 4 Hood Mounting Screws into shims/cabinet
6
according to proper diagram above. Do not tighten
completely. Do not install middle screw until Step 19.
CBX1 SERIES
Page 3
3¼" X 10"
VERTICAL DUCTING
15 /
13 "(30" hood)
16
*
1 /
7 "
2
5¼"
1 /
9 "
2"
2
ELECTRICAL
ACCESS HOLE
(in cabinet bottom)
3¼" X 10"
HORIZONTAL DUCTING
/ "
3
4
1 / "
8
*
1 /
" 5 "
4 4
7 1 / "
2
15 /
13 "(30" hood)
16
ELECTRICAL
CENTER
ACCESS HOLE
LINE
(in wall)
7-IN. ROUND
DUCTING
15 /
13 "(30" hood)
16
*
7 1 / "
2
9 / "
1
2 2 / "
1
8
1
ELECTRICAL
ACCESS HOLE
(in cabinet bottom)
1 /
10 "
2
1 /
1 "
2
10 1 / "
2
/ "
1
2