4Pelco Manual C467M-D (5/95)
4.3 MOUNTING INSTRUCTIONS
Determine the type of mounting desired. The enclo-
sure can be mounted in a hard ceiling, completely re-
place a standard 2' x 2' suspended ceiling tile using the
APSB19 optional faceplate, or be inserted through a
cut-out in a standard 2' x 2' suspended ceiling tile.
Handle the lower dome with care so as not to scratch or
get fingerprints on the viewing window.
4.3.1 Suspended Ceiling Mounting
4.3.1.1 Suspended Ceiling -
Preferred Method
1. Determine the location for mounting the enclosure
and remove the appropriate ceiling tile.
IMPORTANT: When installing the enclo-
sure in a 2' x 4' ceiling grid, cut the ceiling tile
in half and install an additional “T” rail for
support.
2. Remove the factory assembled 12.5" round face-
plate from the back box by disengaging the ser-
rated studs.
3. Remove the factory assembled 14.5" square mount-
ing plate by removing the four (4) 1/4-20 bolts.
4. Place the 14.5" square mounting plate on the re-
moved ceiling tile, centering all four edges of the
plate to the tile. Draw an outline of the octagon
opening in the sub-plate onto the tile.
5. Using a sharp knife or keysaw, cut out the octagon
outlined on the tile.
6. Replace the ceiling tile and place the mounting
plate on top of it, centering the plate on the tile.
Attach the back box mount rails with 1/4-20 nuts
(provided) to two opposite sides of the mounting
plate. Use these mount rails to secure the back box
in place so that it can’t move when inserting or
removing the dome drive unit, and so that all of
the weight of the unit is not on the ceiling tile, per
local code. (Refer to Figure 2.)
Figure 2. Back Box Mounting Rail Installation