Peerless-AV LCC-36-CS - Installation - Manual (Page 5)

5 of 14 ISSUED: 09-27-04 SHEET #: 100-9005-8 12-13-12
Installation to Concrete Ceilings
Drill two 5/16" (8 mm) dia. holes to a minimum depth
of 2.5" (64 mm). Attach ceiling plate (B) using two
concrete anchors (H) and #14 x 2.5" wood screws (E)
as shown in Illustration A and 1, 2, and 3 (below).
Tighten all fasteners.
E
B
H
Illustration A
CONCRETE CEILING
• When installing Peerless wall mounts on cinder block, verify that you have a minimum of 1-3/8" (35 mm) of actual
concrete thickness in the hole to be used for the concrete anchors. Do not drill into mortar joints! Be sure to mount
in a solid part of the block, generally 1" (25 mm) minimum from the side of the block. Cinder block must meet ASTM
C-90 specifi cations. It is suggested that a standard electric drill on slow setting is used to drill the hole instead of a
hammer drill to avoid breaking out the back of the hole when entering a void or cavity.
• Concrete must be 2000 psi density minimum. Lighter density concrete may not hold concrete anchor.
• Make sure that the wall will safely support four times the combined load of the equipment and all attached hardware
and components.
WARNING
• Tighten screws so that wall plate is fi rmly attached,
but do not overtighten. Overtightening can damage
screws, greatly reducing their holding power.
• Never tighten in excess of 80 in. • lb (9 N.M.).
• Always attach concrete expansion anchors directly
to load-be aring concrete.
• Never attach concrete expansion anchors to
concrete covered with plaster, drywall, or other
fi nishing material. If mounting to concrete surfaces
covered with a fi nishing surface is unavoidable,
the fi nishing surface must be counterbored as
shown below. Be sure concrete anchors do not
pull away from concrete when tightening screws.
If plaster/drywall is thicker than 5/8" (16 mm),
custom fasteners must be supplied by installer (not
evaluated by UL).
WARNING
CUT
A
W
A
Y
VIEW
INCORRECT CORRECT
wall
plate
wall
plate
plaster/
dry wall plaster/
dry wall
concrete concrete
1
3
2
H
Drill holes and insert anchors (H).
Place plate (B) over anchors (H) and secure with screws (E).
Tighten all fasteners.
B
H E
concrete
surface