Installation
MS-9050UD PN 52413:C 01/23/08 39
SECTION 2 Installation
The cabinet may be either semi-flush or surface mounted. The cabinet mounts using two key slots
and two 0.250” (6.35 mm) diameter holes located in the backbox. The key slots 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 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 Mounting Backbox
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 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 2.3 on page 41
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
!
See Page
Figure 2.1 Chassis Removal
Backbox
FACP Main Circuit Board on Chassis
mounting stud
mounting stud
9050udbdUnmn.cdr
mounting slot
mounting slot
mounting tabs
mounting tab holes
Ground Stud
backbox stud
mounting hole
backbox stud
mounting hole
backbox stud
mounting hole
backbox stud mounting hole
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