Bosch Appliances Installation, Mounting Information D1255RB D1256RB, and D1257RB

D1255RB/D1256RB/D1257RB Installation Instructions 3.0 Installation

Figure 1: D1255RB, D1256RB, and D1257RB Internal Arrangement

1

5

2

1 2 3 4 5 6

7 6 4 3

1 - Vacuum fluorescent display (VFD)

2 - Keypad

3 - Speaker volume control (potentiometer)

4- Address DIP switches

5 - Status LEDs

6 - Wiring harness connector

7 - Speaker for sounder

•Trouble Buzzer – Two-tone warble when a trouble event occurs, such as a service alert. To stop the signal on a D1255RB Keypad, press [COMMAND][4]. To stop the tone on a D1256RB, press the [TROUBLE SILENCE] key.

The D1257RB does not have a manual method of stopping the trouble buzzer.

3.0Installation

3.1Mounting Information (D1255RB,

D1256RB, and D1257RB)

The D1255RB, D1256RB, and D1257RB are low- profile, surface-mounted units molded in durable red plastic. Use the D56 Keypad Conduit Box (protected surface or flush mount) for mounting the units.

Refer to the Fire System User’s Guide

(P/N: F01U011793) for information about silencing the signals.

•Lost Communication – Single trouble tone followed by a 30-second silence when a keypad or annunciator loses communication from the control panel. To stop the tone, restore communication or remove power from the keypad or annunciator.

2.2.3Switch Settings

A 6-position DIP switch (Figure 1, Item 4) located under the cover allows you to select the address of each keypad or annunciator and silence the keypad encoding tones.

For information on accessing the switches, refer to Section 3.3 Installation Procedure on page 6.

For supervised keypads, assign only one keypad to each address.

Mounting Locations

•Do not mount the keypads and

	annunciators in locations where they are
	exposed to direct sunlight. Direct
	sunlight can interfere with the display
	screen’s visibility and damage internal
	components.
	• Do not mount the units in wet or moist
	locations.
3.2	Wiring Information (D1255RB,

D1256RB, and D1257RB)

A four-wire flying lead is required for the data and power connections between the keypad or annunciator and the control panel. The unit includes a wiring harness with four color-coded flying leads at one end and a female four-pin connector at the other end.

Refer to Figure 10 and Figure 11 on page 8 to wire the D1255RB, D1256RB, or D1257RB.

Bosch Security Systems, Inc. 8/06 F01U011791B 5