Peerless-AV ACC570W - Installation - Manual (Page 4)

ISSUED: 11-14-07 SHEET #: 054-9054-6 05-19-10
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• Tighten screws so that ceiling plate is firmly 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 anchors directly to load-bearing
concrete.
• Never attach concrete anchors to concrete covered with
plaster, drywall, or other finishing material. If mounting
to concrete surfaces covered with a finishing surface is
unavoidable (Not evaluated by UL), the finishing surface
must be counterbored as shown below. Be sure con-
crete anchors do not pull away from concrete when
tightening screws. If plaster/drywall is thicker than 5/8",
custom fasteners must be supplied by installer.
(Not evaluated by UL)
Drill holes and insert anchors (G).
• When installing Peerless ceiling plates on cinder block, verify that you have a minimum of 1-3/8" 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" minimum from the side of the block. Cinder block must meet
ASTM C-90 specifications. 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 supporting surface will safely support the combined load of the equipment and all attached
hardware and components.
Use ceiling plate (A) as a template to mark holes.
Drill four 3/16" (8 mm) dia. holes to a minimum
depth of 2.5" (64 mm). Insert four anchors (G) in
holes flush with ceiling as shown in figure 3.1.
Place ceiling plate (A) over anchors (G) and secure
with #14 x 2.5" (6 mm x 65 mm) wood screws (B).
Tighten wood screws (B) using 3/8" (10 mm) socket
wrench to firmly attach ceiling plate (A).
See figures 3.2 and 3.3.
CONCRETE
CEILING
fig. 3.2
A
fig. 3.1
fig. 3.3
B
3
WARNING
WARNING
A
B
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All other brand and product names are trademarks or registered trademarks of their respective owners.
CUT
A
W
A
Y
VIEW
INCORRECT CORRECT
ceiling
plate
plaster/
dry wall
concrete
ceiling
plate
concrete
plaster/
dry wall
Tighten all fasteners.
Place ceiling plate (A) over anchors (G) and secure with
screws (B).
G
G
G
Installation to Solid Concrete or Cinder Block