P/N 315-080588-3
Installation Instructions
Models FB-300, FB-301 and FC-300
Backboxes and Door
FB-300 and FB-301 BACKBOXES
The Model FB-300 and FB-301 backboxes from
Siemens Industry, Inc., are used for mounting
Firefighters' Telephone Stations. The FB-300
backbox is flush mounted and the FB-301 backbox is
surface mounted.
Consider the following when mounting the backbox:
• Mounting height for access
• Weight and size of enclosure
• Local mounting codes
Fasten the backbox securely to a clean, dry, shock-
free, and vibration-free surface. Position the backbox
clear of obstructions so that the FC-300 door opens
freely and the equipment is easily accessible.
To install the FB-300 Flush Mount backbox:
1. Remove the knockouts in the backbox where field
wiring is required.
2. Hold the empty enclosure against the wall at a
height that provides easy access. Be certain that
the word "TOP" is facing up. Mark the location.
3. Cut the necessary hole in the wall for the FB-300
enclosure (See Table 1, DIMENSIONS).
4. Mark drill points on the wall in the center of the
two holes on the upper rear of the backbox and
the two holes on the bottom of the backbox.
5. Drill the four holes.
6. Use the proper screw size of the 1/4" hole in the
backbox (not supplied). Securely fasten the
backbox to the wall with screws in the two top
and two bottom holes.
To install the FB-301 Surface Mount backbox:
1. Remove the knockouts in the backbox where
field wiring is required.
2. Hold the empty enclosure against the wall at a
height that provides easy access. Be certain that
the word "TOP" is facing up.
3. Mark drill points on the wall in the center of the
two holes on the upper rear of the backbox.
4. Drill the two holes.
5. Use the proper screw size of the 1/4" hole in the
backbox (not supplied). Securely fasten the
backbox to the wall with screws in the two top
and two bottom holes.
TABLE 1
DIMENSIONS
MODEL WIDTH DEPTH HEIGHT
FB-300 7" 3.5" 14"
FB-301 8" 3.5" 15"
FC-300 8" 0.12" 15"
Siemens Industry, Inc.
Building Technologies Division
Florham Park, NJ
Siemens Canada Limited
Building Technologies Division
2 Kenview Boulevard
Brampton, Ontario L6T 5E4 Canada
Figure 1
FB-300/-301 Backbox
