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© Copyright Apollo Fire Detectors Limited 2004

Apollo Fire Detectors Limited, 36 Brookside Road, Havant, Hants, PO9 1JR, UK

Tel +44 (0)23 9249 2412  Fax +44 (0)23 9249 2754

Email: techsales@apollo-

fi

 re.co.uk Website: www.apollo-

fi

 re.co.uk

4

1

Integrated Base Sounder

 Installation Guide

General

This guide describes the installation of the following sounders

Part number

Product Description

45681-278

Integrated Base Sounder

45681-277

Integrated Base Sounder & Isolator

45681-291

Slow Whoop version to Dutch Standard NEN2575

45681-290

Slow Whoop version to Dutch Standard NEN2575 & Isolator

45681-292

White Cap only

45681-293

Red Cap only

Connect the sounders only to control panels using either the XP95 or the Discovery protocol. 

Note: The Integrated Base Sounder is not suitable for outdoor use.

Mounting Instructions

The sounders may be secured to a UK standard conduit box or surface mounted (providing 

there is access through the surface for cabling). If a detector is 

fi

 tted, lock it if required by 

screwing in the grub screw on the head with a 1.5mm hex driver (part no 29600-095)

Wiring Details

Note: The sounders are polarity sensitive (supply reversal protected) and will not function if 

wired incorrectly.

Standard Sounder

Connect the positive and negative loop cables to the L2 and L1 terminals respectively, observ-

ing polarity. The wiring terminals accept solid or stranded cables up to 2.5mm². Functional 

earth or screen cables may be terminated to the EARTH connection. See Fig. 2.

Sounder with Isolator

Connect the positive XP95/Discovery loop cables to the L2 terminals, the negative loop in to L1 

IN and negative loop out to L1 OUT. (See Fig. 3.) When using the sounder as a stand-alone unit, 

a cap is available (red cap part no 45681-293 or white cap part no 45681-292) and is secured 

with a 1.5mm, AF hexagon socket head screw. A hexagonal driver (part no 29600-095) is avail-

able from Apollo. The isolator LED can be seen through the moulding as shown in Fig 3.

Address Setting

The address of the sounder is set using seven segments of the eight-segment DIL switch. The 

eighth seg ment is used to adjust the volume output.  Segments 1-7 of the switch are set to “0” 

(ON) or “1”, using a small screwdriver or similar tool. A complete list of address settings is shown 

overleaf. If a detector is to be 

fi

 tted, set the address as described on page 3.

39214-210/Issue 3

FIRE DETECTORS LIMITED

Fig. 2 

Integrated Base Sounder wiring

EARTH

L2

L1

–R

+R

© Apollo Fire Detectors Limited 2004/JDR/JLC

Volume control

Remote LED

+

+

Group address
setting

Address & tone
setting

Fig. 3

 Integrated Base Sounder with isolator   

wiring

EARTH

–R

+R

© Apollo Fire Detectors Limited 2004–2005/JDR/JLC/JDR

L1 OUT

L1 IN

L2

L2

Volume control

Remote LED

Group address
setting

Address & tone
setting

+

+

Position of Isolator LED

Functional Test Data

The sounder is controlled by the control panel using the output bits in the communication 

protocol.

Protocol bit use:

 

Output Bit 

Function 

Input Bit   Function

 

group mode 

group mode con

fi

 rmed

   

 

1 = off 

 

1 = group

 

 

0 = on 

 

0 = individual

 

1 pulsed 

mode 

1 pulsed 

mode 

con

fi

 rmed

 

 

1 = on 

 

1 = on

 

 

0 = off 

 

0 = off

 

continuous mode 

continuous mode con

fi

 rmed

 

   1 = on 

 

1 = on

 

 

0 = off 

 

0 = off

Fault Finding

 Problem 

Possible 

Cause

  No response or missing 

Incorrect address setting

 

 

Incorrect loop wiring (polarity reversed)

 

 

Too many sounders between isolators

 

Analogue value 4 

Incorrect group address or address setting

 

Analogue value 1 

Sounder test failed

  Sounder fails to operate 

Control panel has incorrect cause and effect  

 

 

  

programming 

 

 

Incorrect group address setting

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