Bosch D7412GV4-B, D928 Installation Manual

D928

Installation Instructions

Dual Phone Line

EN

Switcher

D928 | Installation Instructions | Listings and Approvals

Listings and Approvals

UL

The D928 Dual Phone Line Switcher is UL Listed for
Control Units for Fire-protective Signaling Systems.

2 Bosch Security Systems, Inc. | 10/09 | F01U036353-02

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Contents

1.0 Introduction ......................................................4

2.0 Overview............................................................4

2.1 Description.......................................................... 4

2.1.1 D9412GV2, D7412GV2, D9412G, and

D7412G Control Panels....................................4

2.1.2 D9112B1 and D7212B1 Control Panels ........4

2.1.3 Phone Line Failure Reporting..........................4

2.2 Status LEDs........................................................4

2.2.1 Phone Line Failure LEDs .................................4

2.2.2 Failure to Communicate LED...........................4

2.2.3 AC Power Status LED.......................................4

3.0 Installation......................................................... 5

3.1 Hardware and Software Compatibility ............ 5

3.1.1 D9412GV2, D7412GV2, D9412G, and

D7412G Control Panels....................................5

3.1.2 D9112B1 and D7212B1 Control Panels ........5

3.2 Mounting .............................................................5

3.3 Wiring ..................................................................5

3.4 Phone Connections...........................................6

4.0 Programming....................................................6

5.0 Specifications................................................... 7

D928 | Installation Instructions | Contents

Figures

Figure 1: D928 Mounting Location ...........................5

Figure 2: D928 Wiring and Phone Connections .....5

Tables

Table 1: Phone Cord Lengths ..................................6

Table 2: Specifications..............................................7

Bosch Security Systems, Inc. | 10/09 | F01U036353-02 3