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ISSUED: 04-24-08 SHEET #: 055-9256-9 11-21-11
Installation to Concrete Ceilings or Concrete/Cinder Block Walls
NOTE: Wall installation with models PRS-EXC,
PRS-EXC-S and PRS-EXC-W is not available.
Place ceiling/wall plate (
AA
) on ceiling or wall as a
template.
NOTE:
Place ceiling/wall plate according
to position of opening in outer channel (
BB
) as
shown in fi gure 2.4. or fi gure 2.5. Drill two 5/16"
(8 mm) dia. holes to a minimum depth of 2.5"
(64 mm). Attach ceiling/wall plate (
AA
) using two
concrete anchors (
D
), two #14 x 2.5" wood screws
(
C
) and two 1/4" washers (
F
) as shown in fi gure 2.6.
Tighten wood screws (
C
) until ceiling/wall plate (
AA
)
is fi rmly attached.
CUT
A
W
A
Y
VIEW
INCORRECT
concrete
plaster/
dry wall
CORRECT
concrete
plaster/
dry wall
2
AA
AA
• When installing Peerless wall mounts 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 specifi ca-
tions. 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.
• Installer must verify that the supporting surface will safely support the combined load of the equipment and all at-
tached hardware and components.
D
BB
AA
C
C
BB
AA
D
OPENING ON OUTER
CHANNEL (
BB
) INDICATES
FRONT OF MOUNT
CONCRETE
CEILING
CONCRETE
WALL
CINDER
BLOCK
WALL
OPENING ON OUTER
CHANNEL (
BB
)
INDICATES TOP OF
MOUNT
fi g. 2.4
fi g. 2.5
CEILING
INSTALLATION
WALL INSTALLATION
(EXCEPT FOR PRS-EXC MODELS)
F
F
fi g.
2.6
1
3
2
D
Drill holes and insert anchors (
D
).
Place plate (
AA
) over anchors (
D
) and secure with screws (
C
) and
washers (
F
).
Tighten all fasteners.
AA
D
C
concrete
surface
F
WARNING
• Tighten wood screws fi rmly, 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.).
• Always attach concrete expansion anchors directly
to load-bearing 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 (not
evaluated by UL), 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
