NEC E321 MultiSync LCD5710-2-AV : WMK-3257 accessory guide - Page 5

Installation to Solid Concrete or Cinder Block WARNING • When installing this wall mount 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. 1 Make sure that wall plate (A) is level, use it as a template to mark four mounting holes. Drill four 5/16" (8 mm) dia. holes to a minimum depth of 2.5" (64 mm). Insert anchors (E) in holes flush with wall as shown (right). Place wall plate over anchors and secure with #14 x 2.5" screws (D). Level, then tighten all fasteners. WARNING • Tighten screws so that wall 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.). WARNING • Always attach concrete anchors directly to loadbearing 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 concrete 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) 1 Drill holes and insert anchors (E). 2 A concrete surface E D E Place plate (A) over anchors (E) and secure with screws (D). 3 Tighten all fasteners. E solid concrete cinder block D INCORRECT wall plate concrete wall plate CORRECT concrete CUTAWAY VIEW plaster/ dry wall plaster/ dry wall A 5 of 7 ISSUED: 03-26-10 SHEET #: 125-9106-3 08-04-10