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NFS-320/E/C Installation Manual —
P/N 52745:M2 7/1/14
Installation
Mounting a Cabinet
3.3 Mounting a Cabinet
This section provides instructions for mounting the NFS-320/E/C backbox to a wall. The NFS-
320/E/C is assembled with a removable chassis that can be removed to provide easier access to the
backbox’s mounting holes, or to allow the electronics to be worked on outside the cabinet.
Follow these guidelines when mounting the backbox:
•
Locate the backbox so that the top edge is 66 inches (1.6764 m) above the surface of the
finished floor.
•
Access to the cabinet shall be provided in accordance with NFPA 90, article 110.33.
•
Allow sufficient clearance around cabinet for door to swing freely. (See Section 2.2.5 “System
Cabinet”.)
•
Use the four holes in the back surface of the backbox to provide secure mounting. (See
Figure 3.1 on page 19.)
•
Mount the backbox on a surface that is in a clean, dry, vibration-free area.
Follow the instructions below:
1. Mark and pre-drill holes for the top two keyhole mounting bolts (0.25 inch, 0.635 cm). Use
mounting hardware appropriate for the mounting surfaces; see UL 2017 Pull-Test
Requirements.
2. Select and punch open the appropriate knock-outs. (For selection guidelines, see Section 3.9
“UL Power-limited Wiring Requirements”.)
3. Using the keyholes, mount the backbox over the two screws.
4. Mark the location for the two lower holes, remove the backbox and drill the mounting holes.
5. Mount the backbox over the top two screws, then install the remaining fasteners. Tighten all
fasteners securely.
6. Feed wires through appropriate knockouts.
3.4 Installing Option Boards
The NFS-320/E/C ships fully assembled with in its cabinet. One or two option boards can be
mounted inside the NFS-320 cabinet, under the keypad, as shown in Figure 3.3. Option boards that
can be installed internally include the wire and/or fiber versions of the NCM or HS-NCM, TM-4,
and UDACT or UDACT-2. See Section 2.3, “Compatible Equipment” for a complete list. When
installing option boards, temporarily remove the KDM-R2 keypad/display unit to provide full
access to hardware connections. It may be convenient to do some basic field-wiring before
reinstalling KDM-R2.
!
CAUTION:
Unless you are familiar with the placement of components within this backbox, only use the knockout
locations provided for conduit entry.
NOTE:
UDACT or UDACT-2 only:
If using UDACT or UDACT-2 inside the cabinet, do not install a second option board.
See the
UDACT Manual
or
UDACT-2 Manual
for instructions on using the mounting bracket.
