C1475M-B (8/05) 7
Suspended Ceiling Installation
1. Remove the ceiling tile from the ceiling. Insert the compass tool (supplied) into the center of the tile.
(If necessary, use a 3/32-inch bit to drill a hole.)
NOTE: The ceiling tile cannot be thinner than 0.50-inch (1.27 cm) or thicker than 1.75 inches (4.45 cm).
2. Draw a circle on the tile using the compass tool and a pencil. Carefully cut out the circle.
Figure 3. Preparing the Ceiling Tile
3. Attach the conduit fitting, safety chain bracket, and lock nut. Attach to the bracket one end of a safety chain/cable (not supplied) that will
support up to 16 pounds (7.3 kg). Do not attach the other end yet.
4. Compress the spring clips on the back box and push it through the hole until the clips spring back. Tighten the screws until you hear a
clicking noise. Reinstall the ceiling tile.
5. Remove an adjacent ceiling tile. Prepare the wiring for camera and lens power; refer to Table A and Table B for wiring distances. Pull wiring
into the back box through the conduit fitting. Attach the safety chain to a support structure. Replace the adjacent ceiling tile.
Figure 4. Installing the Back Box
CEILING
ATTACH SAFETY CHAIN HERE
CEILING