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The majority of the weight of the
installed ventilation system will be
supported by retaining plate A. It
must be firmly attached to the stud
framing behind
the drywall. If studs
are not available in the required
locations, a plywood backing (min.
1
/
2
" (13 mm) thick) spanning at least
two studs must
be installed. Failure
to adequately support the weight as
stated may result in the ventilation
system falling off the wall, causing
personal injury and property
damage.
(If plywood backing is not needed,
proceed to "Attaching the retaining
plates to the wall." )
To install a plywood backing board
^
Make a mark, S + 16
3
/
4
" (425 mm)
above the cooktop and on the
centerline.
^
Make a second mark 12
3
/
4
"
(324 mm) underneath the first one.
^
Hold retaining plate A against the
wall so that the marks are visible
through the holes of the plate (see
"Installation / Retaining plate A").
Draw a line around the plate’s
perimeter, then set aside the plate.
^
Make a cutting line 3" (76 mm) above
and 3" (76 mm) below the outline of
plate "A".
^
Find the studs to the left and right of
the mounting location by tapping the
wall or using a stud finder.
^
Mark a vertical cutting line along the
center of each stud.
Be careful not to damage any wiring
or plumbing that may be located
behind the wall. Make sure that the
power supply to the area where this
installation is being performed has
been turned off at the breaker panel
before cutting into the wall.
^ Remove the drywall between the
cutting lines and replace it with
plywood of a matching thickness
(min.
1
/
2
" (13 mm) thick). Tape the
joints and refinish the wall.
^
Proceed to "Attaching the Retaining
plates to the wall" to complete the
installation.
Plywood backing
26