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4
Step
Installing
theDuctwork
(continued)
II
Optional
duct
arrangement
under
concreteslab
Finalize
ductwork
Diagram 471
“ The illustration above is applicable only to downdraft
vented cooktop installation into slab construction.
“ Use recommended wall caps with damper. Laundry
type wall caps should never be used.
- Ductwork must be vented to the outside.
. 6“ PVC duct should be used when installing under
Note: Localbuilding code must
a concrete slab.
be followed for installation and
. Each cooktop blower system requires a separate duct
in specifying approved type and
system.
schedule of PVCduct
used.
Airflow
+5
r
Duct Tape
Over Seam
and Screw
L
Screw
Diagram 472
.
Install ductwork, making connections in direction of
airflow as shown.
. Secure alljoints in ductwork with sheet metal screws.
. Wrap joints with duct tape for airtight seal.
. Install a wall cap with damper or roof cap at exterior
opening.
47