INDOOR DOME INSTALLATION
SPEEDDOME ULTRA
2-9
Procedure
Ensure that the tile ceiling can support
the dome.
Referring to Figure 2-8:
1. Cut a hole in the ceiling tile.
Remove the ceiling tile in which the top hat housing
will be installed. On the ground, scribe a 178 (±1.5)
mm (7 in.) hole in the center of the tile using
tem-
plate [b]. Cut out the hole.
2. If the distance from T-bar to T-bar is more
than 61cm (2ft), loosely attach extension
brackets [d] to support bracket [c] using M6
washers [g] and nuts [h].
The two extension brackets are used to transverse
the extra distance, up to 121cm (4ft) maximum.
3. Loosely attach side support brackets [e] to
each end of the support bracket or, if used,
extension brackets using M6 washers [g]
and nuts [h].
4. Loosely attach clips [f] to the side support
brackets using washers and nuts supplied.
5. Center side support brackets against T-bars.
To easily center the assembly in the open space,
ensure that the V-notch in each side support bracket
is directly over the center tab insert notch in the T-
bar.
6. Tighten the clips to secure the assembly to
the T-bars. Also tighten the extension sup-
ports to the support bracket.
7. Seat the modified ceiling tile in the opening.
8. Feed cables through the hole in the support
bracket.
9. Install the top hat housing (see “Top Hat
Housing”, page 2-5).
10. Lift the ceiling tile adjacent to each end of
the bracket assembly and adjust and tighten
the side support brackets.
For a snug fit (to avoid vibrations that can affect
picture quality), these brackets adjust up or down to
accommodate the thickness of most ceiling tiles. To
properly adjust the side support brackets, see “Side
View” in Figure 2-8.
11. Attach an S-hooks [i] to each end of the
bracket assembly.
12. For each S-hook, attach one end of safety
chain [j] to the S-hook and its other end to a
strong ceiling member.
KEEP CHAIN AS TAUT AS POSSIBLE!
CLOSE BOTH ENDS OF S-HOOK. DO NOT
SECURE TO A SPRINKLER OR FIRE CON-
TROL SYSTEM!
13. Go to “Dome Setup and Attachment”, page
2-17.
