5-7
MEGA3 NFPA Medical Gas Notification System
4107 9016 59.03
5.2.4 Install New Components
1. Mount the I/O Modules to the large
adapter bracket using the nuts provided.
NOTE: I/O Modules and Power Supply will
need to be daisy chain connected via the
grey cables supplied with each I/O module
(See figure 122).
2. Connect the grey cable(s) provided; from
the power supply to the white sockets on
the I/O modules in a daisy chain manner.
3. The last module in the chain needs to
have the #1 DIP switch set to “ON” (See
Figure 123). Refer to the module ID label.
4. If alarm is an Area or Combination with
local sensors, consider the position and
placement of the pressure transducers
before drilling or mounting any compo-
nents. Use the sensor adapter kits provid-
ed to relocate the sensors if required.
5. Connect all input signal / output signal /
gas sensor wiring to their respective mod-
ules. Refer to the wiring diagram on the
Quick Setup Guide for instructions.
5.2.5 Install Trim Plate
1. Remove the trim ring from the standard
trim plate and install the correspond-
ing trim plate from retrofit option kit
(4107220616) (Figures 130 & 131).
Screws are provided in the option kit for
attaching the trim ring to the trim plate.
TotalAlert
1
Double also requires switch-
ing over the door lock set to the new trim
plate.
2. Install trim plate assembly to the rough-
in box using the holes that align to the
rough-in box flanges (TotalAlert
1
Single),
or attach trim plate assembly to the exist-
ing hinges (TotalAlert
1
Double).
Figure 130: MEGA3™ Single
Trim Plate Installation
3. Mount the Front Panel assembly hinge to
the trim ring using the countersink sheet
metal screws provided on the trim ring
(Figures 132 - 134).
4. Connect the lanyard to the threaded ex-
tension on the right side of the trim ring.
5. Connect the grey cable from the Front
Panel to the white socket on the Power
Supply board.
6. Connect the Ground cable from the Front
Panel to the rough-in box.
7. Turn on the supply power to the alarm
and wait for the alarm to boot up.
8. Setup the new alarm by referring to the
Quick Setup guide.
Figure 131: MEGA3™ Double
Trim Plate Installation
Door Lock
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