Installation - Bosch D125B Installation Instructions Manual

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3.2 Power from an external auxiliary power supply
Use a separate power supply listed for fire signaling units and/or commercial or residential
burglary units. Depending on compatibility with the control panel, a D130, D133, or D134
Relay can be required to reset the smoke detectors using the Reset Sensor command. See
Wiring for 12 VDC or 24 VDC power supplied by an external power supply, page 8.
The external power supply must be UL1481 or UL864 Listed, regulated, and power‑limited.
Install the control panel and external power supply in the same room no more than 20 ft (6 m)
apart. The interconnecting wires between the control panel and external power supply must
be in conduit.
The power source for both the auxiliary power supply and the control panel must be from the
same dedicated AC branch circuit.
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Installation

The module can be mounted in the D8103, D8108A, D8109, D8109G, D8109H, or D8109L
Enclosures. Only the D8108A and D8109 models are suitable for commercial fire applications.
The D8108A and D8109L enclosures require use of a D137 Mounting Bracket to install the
module. The other enclosures have several module mounting locations to which the module
can be installed using the supplied screws. Refer to the D137's and the enclosure's
Installation Instructions for mounting locations and instructions.
Bosch Security Systems, Inc. Installation instructions
Installation | en 5
2018.06 | 4.0 | F.01U.036.340