8Pelco Manual C456M-D (1/98)
3. To create an opening for the wiring, use a hammer and punch to remove one
of the knockouts in the top of the back box. If it is necessary to work inside the
back box, remove the trim ring and dome by inserting a screwdriver or your
fingers between the trim ring and the faceplate and popping the trim ring and
dome loose.
4. Remove the trim ring and dome (see step 3). Remove the parts bag inside the
back box. Reattach the trim ring and dome to the back box.
5. Angle the back box through the grid opening and set the back box into the
grid.
6. From an opening in a grid adjacent to the back box, install the four T-rail clips
that are supplied in the parts bag (refer to Figure 1).
7. If additional support is required (such as anchoring with a chain or steel cable
to a support beam above the dome enclosure), install one or both of the 1/4-
20 eye bolts and washers that are supplied in the parts bag:
a. Remove one or two of the 1/4-20 screws in the top of the back box.
b. Screw a nut about a half inch onto an eyebolt.
c. Slide a split lock washer and flat washer onto the eyebolt.
d. Screw the eyebolt into the back box and lock the eyebolt into place by
tightening the nut with an 11 mm wrench.
e. Repeat steps b-d if you are going to install the second eyebolt.
f. Use a chain or cable to fasten the eyebolt(s) to a support structure in the
ceiling.
8. Remove the trim ring and dome.
Refer to Figure 2 for the following steps.
9. Push the wiring into the back box. If you are using conduit, fasten the conduit
to the back box.
10. Install the coaxial cable to the BNC connector.
11. Install power to the 10-position terminal block. Make sure the power switch on
the side of the back box is off.