NEC NP40CM - Manual (Page 4)

ISSUED: 11-01-06 SHEET #: 055-9478-6 01-14-09
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Drill two 1/4" (6 mm) dia. holes to a minimum depth of
2.5" (64 mm). Attach ceiling plate (G) using two
concrete anchors and #14 x 2.5" wood screws (F) as
shown in Illustration A and 1, 2, and 3 (below).
Tighten all fasteners.
IMPORTANT: It is the responsibility of the installer
to verify that the ceiling will safely support the
combined load of all attached hardware and
components.
1
3
CUT
A
W
A
Y
VIEW
INCORRECT
concrete
metal
bracket
plaster/
dry wall
CORRECT
concrete
metal
bracket
plaster/
dry wall
concrete
ceiling
concrete
anchor
concrete
anchor
concrete
anchor
F
F
Illustration A
Installation to Concrete Ceilings
ACC 203 (Alligator ® concrete anchors) are recommended.
2 G
• FOR DIRECT ATTACHMENT TO LOAD BEARING
CONCRETE ONLY! Concrete expansion anchors are
not intended for attachment to concrete ceilings
covered with a layer of plaster, drywall, or other
finishing material. If mounting to concrete ceiling
covered with plaster / drywall is unavoidable, plaster /
drywall must be counterbored as shown below.
WARNING
F
G
CONCRETE CEILING
concrete
anchor
Drill hole and insert anchor
Place ceiling plate over anchor and secure with screw
After repeating step one tighten all fasteners
• Tighten wood screws so that ceiling plate is firmly
attached, but do not overtighten. Overtightening can
damage the screws, greatly reducing their holding
power.
• Never tighten in excess of 80 in • lb (9 N.M.).
• Make sure that mounting screws are anchored into the
center of the studs. The use of an "edge to edge" stud
finder is highly recommended.
WARNING
• When installing Peerless mounts on concrete, verify that you have a minimum of 1 5/8" of actual concrete surface in
the 1/4" diameter hole to be used for the concrete anchors. Do not drill into mortar joints! Concrete must meet ASTM
C-90 specifications.
• Concrete must be 2000 psi density minimum. Lighter density concrete may not hold concrete anchor.
• Make sure that the supporting surface will safely support the combined load of the equipment and all attached hard-
ware and components.
• Never exceed the Maximum UL Load Capacity of 50 lb (27 kg).
WARNING