Chapter 2: Installation; Mounting Options; Mounting; Transformer Mounting - Fire-Lite 411UDAC Installation, Programming, Troubleshooting And Operating Instruction Manual

Installation
CHAPTER 2
2.1

Mounting Options

The cabinet may be either semi-flush or surface mounted. The door is removable during the installation period by
opening and lifting it off the hinges. The cabinet mounts using two key slots and two additional 0.25" diameter holes
located in the backbox. The keyslots are located at the top of the backbox and the two securing holes at the bottom.
Carefully unpack the system and check for shipping damage. Mount the cabinet in a clean, dry, vibration-free area
where extreme temperatures are not encountered. The area should be readily accessible with sufficient room to easily
install and maintain the panel. Locate the top of the cabinet approximately five feet above the floor with the hinge
mounting on the left. Determine the number of conductors required for the devices to be installed. Sufficient knock-
outs are provided for wiring convenience. Select the appropriate knockout(s) and pull the required conductors into
the box. Note that there are no knockouts on the left (hinged) side of the cabinet. All wiring should be in accordance
with the National and/or Local codes for fire alarm systems.
2.2

Mounting

Backbox Mounting
• Open the door and lift the door off the pin hinges
• Mark and predrill holes for the top two keyhole mount-
ing bolts using the dimensions shown in Figure 2-2 on
page 19
• Install two upper fasteners in the wall with the screw
heads protruding
• Using the upper 'keyholes', temporarily mount the
backbox over the two screws
• Mark the lower two holes, remove the backbox from
the wall and drill the lower two holes in the wall
• Before mounting the backbox to the wall, install the
supplied transformer in the backbox by sliding the bot-
tom transformer flange into the lower transformer
mounting slot. Position the hole in the top transformer
flange over the transformer mounting stud. Refer to
Figure 2-1 for the location of the slot and stud
• Secure the transformer with the supplied nut and
attached washer
• Mount the backbox to the keyhole mounting bolts, install and tighten the remaining fasteners
Main Circuit Board Mounting
• When the location is clean and free of construction dust or other contaminants, install the main PC board by
installing the four supplied standoffs on the four main circuit board mounting studs located in the backbox.
Refer to Figure 2-2, "Cabinet Dimensions and Knockout Locations," on page 19
• Position the main circuit board's four corner mounting holes over the four standoffs just installed. Be certain
to observe the proper ESD (Electro Static Discharge) precautions to prevent damage to the static sensitive
circuits. This includes, but is not limited to, use of a wrist strap
• Secure the main circuit board to the standoffs with the four supplied screws and attached washers
• Plug the transformer connector into the main circuit board connector J4. The connector is keyed and can only
be plugged-in one way. Refer to Figure 2-4 on page 21 and Figure 2-13 on page 30 for transformer connector
location and AC power connections
• When wiring is completed, install the door on the backbox pin hinges and the window bezel in the door
18
Installation
411UDAC

Transformer Mounting

FIGURE 2-1:
Top of backbox
Transformer
flange
Document #51073 Rev. D 12/09/2008
Ground
Stud
Transformer
mounting stud
Transformer
mounting slot
P/N 51073:D