Bosch D129 Installation Manual

Dual Class A Initiating Circuit Module

D129

en Installation Instructions

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Dual Class A Initiating Circuit Module Notices | en 3

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Notices

These instructions cover the installation of the D129 Dual Class A Initiating Circuit module as
an interface to specified combined Burglary/Fire control panels for fire alarm and waterflow
alarm applications.
Install, test and maintain the module according to these instructions, NFPA 72, local codes,
and the authority having jurisdiction (AHJ). Failure to follow these instructions can result in
failure of a detector to initiate an alarm event. Bosch Security Systems, Inc. is not responsible
for improperly installed, tested or maintained devices.
Before installing the module, become familiar with the Installation and Operation Guide for the
control panel you are using.

Warning!

Follow these instructions to avoid personal injury and damage to equipment.

NFPA 72 requires that you perform a complete system wide functional test following any
modifications, repair, upgrades or adjustments made to the system’s components, hardware,
wiring, programming and software/firmware.

Bosch Security Systems, Inc. Installation Instructions 2013.05 | 03 | F.01U.036.295

4 en | Notices Dual Class A Initiating Circuit Module

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Description

The D129 Dual Class A Initiating Circuit module is a fire system interface to the control panels
listed in the table below for fire alarm and waterflow alarm applications. The module has two
Class A (Style D) circuits, each with a screwdriver adjustable Alarm Retard and Alarm Reset
Delay. Use the Alarm Reset Delay in waterflow applications. You can mount up to four modules
inside the control panel enclosure.
The Class A (Style D) circuit is four‑wire data expansion loop with a feed and return for both
the positive and negative sides of the loops. Unlike the two‑wire loops supervised by an
end‑of‑line (EOL) resistor, the Class A circuits can detect an alarm condition with a single
open or ground fault in the circuit.
The following table lists control panels compatible with the D129:

Control Panels

Active products:

GV41, GV32, and GV23 panels Wiring, page 7

Legacy*

D9412G, D7412G, D7212G**, D9412, D7412,
D7212** and D7212B1** panels

D9112B1 and D9112 panels

See section:

See control panel’s documentation on the

Bosch website (http://

www.boschsecurity.com)

D8112 panel

D7112 panel

1

GV4 = D9412GV4, D7412GV4, and D7212GV4** panels

2

GV3 = D9412GV3, D7412GV3, and D7212GV3** panels

3

GV2 = D9412GV2, D7412GV2, and D7212GV2** panels

* Legacy products were investigated to comply only to UL864 8th edition

** indicates products which are not UL listed for commercial fire applications

2013.05 | 03 | F.01U.036.295 Installation Instructions Bosch Security Systems, Inc.