5-8
MEGA3 NFPA Medical Gas Notification System
4107 9016 59.03
Figure 133: MEGA3™ Double
Mount Front Panel Assembly
Figure 132: MEGA3™ Single
Mount Front Panel Assembly
Figure 134: MEGA3™ Double
Mount Front Panel Assembly
5.3 Retrofit of Other Alarm Panels
5.3.1 Remove Components from Ex-
isting Alarm
1. Open old alarm panel to be retrofitted
and ensure that the retrofit kit to be in-
stalled is correct according to the number
of Signal Inputs, Relay outputs, and/or gas
sensor signals (See Appendix A).
2. If alarm to be retrofit has a rough-in box
greater than 20 inches wide, you will need
the optional trim kit (4107220615) to
cover the existing box.
3. Test Master alarm signals to validate wir-
ing and document all signal wires coming
into the box with alarm type and loca-
tions prior to disconnecting the front
panel. This information will be required to
setup the new alarm.
4. Turn off the supply power to the alarm.
CAUTION:
Verify that power has been
turned off prior to working on the alarm.
5. Remove and discard the front panel from
the existing alarm.
6. Remove and discard of all the compo-
nents from the alarm rough-in box.
7. Ensure that no low voltage signal wiring
is pulled through the input power knock-
outs inside of the rough-in box.
8. Remove any studs and screws flush with
the rough-in box.
9. Remove all sharp edges and burrs from
open knockouts and from the inside of the
rough-in box.
10. Remove all existing regulatory compliance
labels from the inside of the rough-in box.
11. Clean the inside of the rough-in box to
remove all of the metal shavings and dirt.
