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N C 9 5 1 • D E S I G N & I N S T A L L A T I O N G U I D E
Accessible Toilet Alarm
This equipment must be installed and maintained by a suitably skilled and technically
competent person.
This document provides a brief design and installation overview of the NC951 accessible
toilet alarm system, based on the recommendations of BS 8300 (the code of practice for the
design of buildings and their approaches to meet the needs of disabled people).
NC809DBBT
Accessible Toilet Reset Point c/w Sounder
Includes a 'Reset' button c/w braille text, red
reassurance LED and sounder.
Accessory Pack
Containing device
mounting screws
and shorting link.
NC943B
Single Zone Call Controller c/w Sounder
Includes a link selectable 'Call Accept'/'Reset'
button, 'Calling' and power 'On' LEDs, 140mA PSU,
backup battery, volt-free relay output and sounder.
Single Zone Emergency Assistance Alarm
NC951
R R E E S S E E T T
Indicators will operate:
Indicators will operate:
Continuously when pull cord is activated
Intermittently when help is on the way
Intermittently when help is on the way
On
Approved Document No.: DNU0951001 Rev 3 • Page 1 of 8
KIT CONTENTS
Includes a red reassurance LED, red pull cord
and two triangular pull bangles.
+
-
Calling
1
2
3
4
Call Accept
NC806CS
Overdoor Light c/w Sounder
NC807C
Ceiling Pull
NC949
Accessible WC
Sticker
Documentation
A Design & Installation
Guide (this document).
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Table of Contents
Summary of Contents for EUfire NC951
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Page 1: Kit Contents
This equipment must be installed and maintained by a suitably skilled and technically competent person. This document provides a brief design and installation overview of the NC951 accessible toilet alarm system, based on the recommendations of BS 8300 (the code of practice for the design of buildings and their approaches to meet the needs of disabled people). - Page 2 Approved Document No.: DNU0951001 Rev 3 • Page 2 of 8...
- Page 3 DESIGNING AN ACCESSIBLE TOILET ALARM SYSTEM Figure 2 below, shows a typical ‘good practice’ layout for an accessible toilet alarm system based on the recommendations of BS 8300. Always refer to the full version of BS 8300 before system design/installation. Figure 2 : Typical BS 8300 Compliant Accessible Toilet Alarm System Site the ceiling pull so its pull Site the overdoor light outside...
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Page 4: Mains Wiring
INSTALLING THE ACCESSIBLE TOILET ALARM SYSTEM ALWAYS ENSURE MAINS SUPPLY IS ISOLATED BEFORE MAKING ANY CONNECTIONS. See figure 1 for typical accessible toilet alarm wiring. Mains wiring All mains wiring should be provided in accordance with the current edition of the IEE Wiring Regs. - Page 5 ENGINEER SELECTABLE FUNCTIONS The NC943B call controller has a number of engineer selectable functions (see figure 3 below). This section explains how these functions work and how to set them. Figure 3 : Rear View of the NC943B Call Controller Reset Accept Volume...
- Page 6 The call controller’s red ‘Calling’ LED will flash, its sounder (and relay) will pulse and the overdoor light will also pulse. Figure 4 : Typical Expanded NC951 System with Emergency Call NEGATIVE SIGNAL...
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Page 7: Basic Operation
BASIC OPERATION The default operation of the NC951 is shown in the diagrams below. Raising an alarm call Inside the WC The distressed person raises The ceiling pull’s red LED activates steady, the reset point’s an alarm call by pulling the red LED and sounder activate steady to confirm an alarm call cord on the ceiling pull. -
Page 8: Technical Specifications
TECHNICAL SPECIFICATIONS NC943B Single Zone Call Controller c/w Sounder Mains supply: Voltage: 230Va.c. 50/60Hz; Max. current: 23mA. Outputs: PSU voltage 12Vd.c. / current 140mA. Volt-free relay contacts (NO/C/NC) rated 30Vd.c. @ 1A. Currents: Zone current 18mA; Alarm current 23mA. Battery backup: 500mA, rechargeable, 24 hours standby plus 15 minutes alarm run time.
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