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Multi-tone Open-area Alarm Devices

Installation Guide

General

This guide describes the installation of the following products:

Part Number Product Name 

Type

Colour

55000-278

Multi-tone Open-area Sounder

Indoor (Type A)

Red

55000-279

Multi-tone Open-area Sounder

Indoor (Type A)

White

55000-274

Multi-tone Weatherproof Open-area Sounder

Outdoor (Type B)

Red

55000-275

Multi-tone Weatherproof Open-area Sounder

Outdoor (Type B)

White

55000-293

Multi-tone Open-area Sounder Beacon with Isolator

Indoor (Type A)

Red

55000-294

Multi-tone Open-area Sounder Beacon with Isolator

Indoor (Type A)

White

55000-291

Multi-tone Open-area Sounder Beacon

Indoor (Type A)

Red

55000-292

Multi-tone Open-area Sounder Beacon

Indoor (Type A)

White

55000-298

Multi-tone Weatherproof Open-area Sounder Beacon 

with Isolator

Outdoor (Type B)

Red

55000-299

Multi-tone Weatherproof Open-area Sounder Beacon 

with Isolator

Outdoor (Type B)

White

55000-296

Multi-tone Weatherproof Open-area Sounder Beacon 

Outdoor (Type B)

Red

55000-297

Multi-tone Weatherproof Open-area Sounder Beacon 

Outdoor (Type B)

White

The Multi-tone Open-area Alarm Devices are connected to control panels which use the 

Discovery or XP95 protocol. It complies with the requirements of EN54–3: 2001. Versions with 

isolator also comply with EN54–17: 2005. 

Tones incorporated in the product are: 

Apollo Standard Tone, Slow Whoop Tone to NEN2575 and DIN 33404 Tone. There are 2 volume 

settings in each variant. 

The versions which incorporate a short-circuit isolator have a yellow indicator LED, which illumi-

nates through the lens if a short circuit is detected on the loop wiring.

Mounting the backbox

The backbox is removed by using either an unlocking key (Type A versions) to press in one of 

the retaining lugs, or a hex driver (Type B versions).

The Type A product has 6 slotted knockouts on the backbox and is installed directly to the 

mounting surface. For the Type B product, 

fi

 t the backbox to the mounting surface with four 

screws using the holes in each corner (see Fig 1). 

Do not drill through the backbox. 

To ensure that there is a good seal between the back box and the unit, the mounting surface 

should be as fl at as possible and the mounting screws not over tightened.

Wiring Details

Note: This product is polarity sensitive (supply reversal protected) and will not function if wired 

incorrectly.

Drill holes for cable entry as appropriate for the installation. Drill guides are marked on the 

backbox. To maintain the integrity of the Type B product it is essential that suitable cable 

glands be used.

Connect the loop cables to the terminal block, observing polarity and functional earth/screen 

if applicable. The wiring terminals accept solid or stranded cables up to 2.5mm².

The maximum number of Multi-tone Open-area Alarm Devices permitted between standard 

 XP95 isolators (part no. 55000-720) or isolating bases (part no. 45681-321/284) is 20, depending 

on the loop loading.

  Apollo's Loop Calculator is a program available as a free download from 

  www.apollo-fi re.co.uk and can be used to check the loading of any proposed loop design.

PP2248/Issue 9

©A

corn Fire & Security LTD

Group Address Setting

In group mode the Multi-tone Open-area Alarm Devices responds to an additional address 

referred to as the group address, which is used to activate groups of sounders simultaneously. 

Individual units continue to respond to their own addresses and report their status in the normal 

way. A group address is set on a four-segment DIL switch which is factory set to 0000. A group 

address may be any spare address within–and only within–the range 112 to 126 inclusive. The 

required group address is set in accordance with the following table.

  DIL 

switch 

 DIL 

switch 

  DIL 

switch

  setting 

 setting 

  setting

 

addr 1234 

addr 1234 

addr  1234

 

112 1111 

117 0101 

122  1010

 

113 0111 

118 1001 

123  0010

 

114 1011 

119 0001 

124  1100

 

115 0011 

120 1110 

125  0100

 

116 1101 

121 0110 

126  1000

Note: group mode is disabled if the group address DIL switch is set to 0000, irrespective of the 

protocol message.

Commissioning

It is important that the Multi-tone Open-area Alarm Devices be fully tested after installation. An 

 XP95 Test Set, part no. 55000-870, may be used to carry out func tion al testing of individual units. 

The test set can also perform data integrity tests of an entire system.

Troubleshooting

Before investigating individual units for faults, it is important to check the system wiring is fault-

free. Earth faults on data loops may cause communication errors.

Fault Finding

 Problem 

Possible 

Cause

  No response or missing 

Incorrect address setting

 

 

Incorrect loop wiring (polarity reversed)

 

 

Too many sounder beacons between isolators

 

Analogue value 2 

Beacon failed (Sounder Beacon version only)

 

Analogue value 4 

Incorrect group or individual address setting

 

Device fault 

Incorrect group address setting

  Device fails to operate 

Control panel has incorrect cause and effect programming 

 

 

Incorrect group address setting

Locking Mechanism

To meet the requirements of EN54 Part 3 and the Construction Products Directive, the devices 

have been designed to lock to its base. To release the Type A device from its base, a release 

key (supplied) must be used to release the latch in the side of the base. To unlock the Type B 

(Weatherproof) versions, a hex driver (supplied) is required. 

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www.acornfiresecurity.com

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