14 en | Wiring Notification Appliance Circuit Module
2020.05 | 04 | 4998122260 Installation manual Bosch Security Systems, Inc.
5.2.2 Wiring separate loops with 12VDC power supplied by the panel
This wiring scheme allows two separate strings of modules (NAC loops) triggered by separate
programmed alarm outputs.
Figure5.6: Wiring separate module loops to a BSeries control panel supplying 12VDC power
1 Last D192G module on the
interconnected NAC loop
9 Connection between one module’s
SUPV ZONE and panel zone
2 Polarized notification devices 10 Connection between the other
module’s SUPV ZONE and panel zone
3 560Ω, 2W EOL resistors (P/
N:F01U008725)
11 Connection to the panel’s Aux power
(+12V)
4 First D192G module on the
interconnected NAC loop
12 D134 Dual Relay Module
5 BSeries control panel 13 Positive (+) connection between
panel’s aux power and the aux and ext
power terminals of the modules
6 Connection to C programmed output 14 Connection between both module
COM terminals and panel’s digital
COM (not to earth ground)
7 Connection to B programmed output 15 Connection to the other module’s
ALRM TRG terminal
8 Connection to one module’s ALRM
TRG terminal
16 1kΩ EOL resistor (P/N:F01U011298)