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The cabinet can be surface mounted or semi-flush mounted. The door is removable during the
installation period by opening and lifting it off the hinges. The cabinet mounts using two key slots
at the top of the backbox and two additional securing holes located 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 cabi-
net approximately 5 feet (1.5 m) above the floor with the hinge mounting on the left. Determine the
number of conductors required for the devices to be installed. Sufficient knockouts are provided
for wiring convenience. Select the appropriate knockout(s) and pull the conductors into the box.
All wiring should be in accordance with the National and/or Local codes for fire alarm systems.
2.1 Backbox Mounting
CAUTION:
!
THE CIRCUIT BOARD CONTAINS STATIC-SENSITIVE COMPONENTS. ALWAYS GROUND
YOURSELF WITH A PROPER WRIST STRAP BEFORE HANDLING ANY BOARDS SO THAT
STATIC CHARGES ARE REMOVED FROM THE BODY. USE STATIC SUPPRESSIVE
PACKAGING TO PROTECT ELECTRONIC ASSEMBLIES.
To prevent damage to the circuit board and to facilitate backbox mounting, the chassis with main
circuit board and transformer can be easily removed. Loosen the two 3/8" nuts securing the top
flanges of the chassis, then slide the chassis up to free it from the lower tabs. Place the chassis
assembly in a protective antistatic bag in a safe location until it can be reinstalled in the backbox.
Mark and predrill hole in the wall for the center top keyhole mounting bolt using the
dimensions illustrated in Figure 2.2 on page 27.
Install center top fastener in the wall with the screw head protruding.
Place backbox over the top screw, level and secure.
Mark and drill the left and right upper and lower mounting holes.
Note: outer holes (closest to sidewall) are used for 16" O.C. stud mounting.
Install remaining fasteners and tighten.
grounding stud:
attach solid earth
ground wire (refer to
Figure 2.4 on page 29)
26
Section 2: Installation
STATIC SENSITIVE COMPONENTS
mounting slots
mounting studs
mounting slots
Figure 2.1 Chassis Mounting in Backbox
MS-5UD & MS-10UD Series Manual — P/N 52626:C2 1/24/2012
MS-5UD Board on Chassis
mounting holes
mounting tabs
MS-5UD Backbox
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