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

D928 | Installation Instructions | Contents

Contents
1.0	Introduction ......................................................	4
2.0	Overview............................................................	4
2.1	Description..........................................................	4

2.1.1D9412GV2, 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

3.1.1D9412GV2, 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
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

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