Bosch D192G - Page 16

16 en | Wiring Notification Appliance Circuit Module
2020.05 | 04 | 4998122260 Installation manual Bosch Security Systems, Inc.
5.2.4 Wiring separate loops with 12VDC or 24VDC power supplied by an
external power supply
This wiring scheme allows two separate strings of modules (NAC loops) triggered by separate
programmed alarm outputs.
Figure5.8: Wiring separate module loops to a BSeries panel with power supplied by an external power supply
1 Last D192G module on the
interconnected NAC loop
11 Positive (+) connection from one
relay’s COM terminal to the aux and
ext power terminals of one module
and the positive (+) terminal of the
power supply
2 Polarized notification devices 12 Connection to panel’s Aux power
(+12V)
3 560Ω, 2W EOL resistors (P/
N:F01U008725)
13 Connection between the other
module’s SUPV ZONE and panel zone
4 First D192G module on the
interconnected NAC loop
14 Connection to the other module’s
ALRM TRG terminal
5 BSeries control panel 15 D134 Dual Relay Module
6 Connection to C programmed output 16 Positive (+) connection from the other
relay’s COM terminal to the aux and
ext power terminals of the other
module and the positive (+) terminal of
the power supply
7 Connection to B programmed output 17 Conduit required for wiring between
external power supply and control
panel enclosure
8 Connection to one module’s ALRM
TRG terminal
18 UL Listed 12VDC or 24VDC regulated,
power‑limited auxiliary power supply