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Step 5A
Attach the Blower Transition Duct
The blower transition duct is not packed
with your cooktop. For all downward duct
installations connect to a transition duct with a
6″ round standard ductwork. This 3
1
⁄4″ x 10″
rectangle to 6″ round transition duct is available
at your local building supply store.
Install the transition duct to the blower outlet
with four (4) sheet metal screws. Secure all
joints with duct tape to assure an airtight seal.
Step 5B
Blower to Ductwork Alignment
In general, the use of flexible ducting is
discouraged because it can cause severely
restricted airflow. However, if the blower outlet
and the floor or wall duct location do NOT align
well, then flexible METAL ducting can be used
to adapt to an offset. Good alignment without
use of flexible ducting is best.
NOTE:
• Do not exceed the maximum recommended
offset of 3″.
• Do not allow the flexible ducting to kink or
collapse.
• Do stretch the flexible ducting as much
as possible to eliminate as much of the
corrugation as possible.
A 3
1
⁄4″ x 10″ rectangle to 6″ round transition duct
is available at your local building supply store.
NOTE: Illustrations are for planning
purposes only.
32
INSTALLATION INSTRUCTIONS
(continued)
Step 4
Preparing the Countertop
Clearance between inside front of cabinet and
rear of countertop cutout must be 20
5
⁄8″ in order
to accommodate cooktop depth.
A 1/2″ wide flat area is required around the edge of
opening for support of the unit. The cooktop unit
must be level and sit squarely into countertop
opening.
Carefully cut countertop opening according to the
dimensions shown in the illustration. Be sure that
opening is cut squarely, with sides parallel to
each
other and rear exactly perpendicular to sides.
Step 5
Preparing for Ductwork
NOTE: Ductwork MUST be vented to
outside. DO NOT vent into a wall, ceiling,
crawlspace, attic or any concealed space.
Cut hole in cabinet wall or floor as appropriate
for your installation. Make sure exhaust duct is
located between wall studs or floor joists.
1
7
⁄8″ Min.
20
5
⁄8″
1
7
⁄8″ Min.
20
5
⁄8″
25″
28
7
⁄8″
Rear Wall Venting
Downward Venting
9
3
⁄8″
15
3
⁄4″
9
3
⁄8″
7
9
⁄16″
Bottom Venting Back Venting
3″ Max.
Centerline to
Centerline
Offset
Screws
Screws
(on other side)
Transition
Duct
Transition
Duct
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