To Next PageTo Next Page
Need help?Do you have a question about the C-TEC 800 Series and is the answer not in the manual?
Specifications for the main call controller unit, including mains supply, outputs, battery backup, and dimensions.
Specifications for the ceiling or wall mountable pull unit, detailing input voltage, cord length, and IP rating.
Details for the reset point unit, including voltage, LED indicators, sounder, and mounting requirements.
Specifications for the overdoor light unit, covering input, indicators, sounder, and mounting.
Kit includes a reset point with braille text, red reassurance LED, and sounder.
Kit includes a pull unit with red reassurance LED, pull cord, and pull bangles.
Kit contains device mounting screws and a shorting link.
Kit includes the main call controller with reset button, LEDs, PSU, and relay.
Kit includes a sticker for accessible WC signage.
Kit includes the Design & Installation Guide.
Describes how a distressed person initiates an alarm call using the ceiling/wall pull.
Explains how staff accept a call and how the system is reset after assistance.
Details on enabling or disabling the battery backup facility for system power continuity.
Instructions for adjusting the volume of the call controller's on-board sounder.
Procedure for testing the system's sounders and LEDs using the call controller button.
Information on connecting additional devices and triggering a more urgent emergency call.
Guidance on connecting the mains power supply to the NC943B call controller.
Instructions for segregating and wiring ELV components of the alarm system.
Configuration options for the 'Call Accept' button: accept call, reset system, or no effect.
Details on the volt-free relay contacts and their use for switching external devices.
The NC951 Accessible Toilet Alarm is a comprehensive emergency assistance system designed to meet the needs of disabled people in various settings, including accessible toilets, reception areas, interview rooms, and changing rooms. This single-zone system is 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, and adheres to Building Regulations Approved Document Part M. It is designed for installation and maintenance by suitably skilled and technically competent personnel.
The core function of the NC951 system is to enable a person in distress to raise an alarm call, which then alerts staff or carers to the need for assistance. The system comprises several key components that work together to achieve this:
NC943B Single Zone Call Controller c/w Sounder: This is the central control unit of the system. It receives alarm signals, activates visual and audible alerts, and provides a means for staff to acknowledge or reset the alarm. It features a 'Call Accept' button, 'Calling' and power 'On' LEDs, a built-in 140mA PSU, a backup battery for continued operation during power outages, a volt-free relay output for connecting external devices, and an adjustable sounder.
NC807C Ceiling / Wall Pull Unit: This is the primary device for raising an alarm. It consists of a pull cord with two triangular pull bangles, designed to be easily reachable from both the WC and floor level. When activated, it sends an alarm signal to the call controller and illuminates a red reassurance LED to confirm the call has been made.
NC809DBBT Accessible Toilet Reset Point c/w Sounder: Located inside the accessible area, this unit serves two main purposes. Firstly, it provides a red reassurance LED and sounder that activate steadily when an alarm call is raised, confirming to the distressed person that help is on the way. Secondly, it features a 'RESET' button with braille text, allowing staff to cancel the alarm once assistance has been provided.
NC806CS Overdoor Light c/w Sounder: Positioned outside the accessible area, typically above the door, this unit provides visual and audible indication that an alarm has been raised within. Its dual ultra-bright red LEDs and active sounder guide staff to the location where assistance is required.
The NC951 system is designed for ease of use by both the person requiring assistance and the attending staff.
Raising an Alarm: A distressed person simply pulls the cord on the NC807C Ceiling / Wall Pull Unit. This immediately triggers a steady red LED on the pull unit and the reset point, along with a steady sounder at the reset point, confirming the alarm has been raised. Simultaneously, the NC943B Call Controller's red 'Calling' LED and sounder activate steadily, and the NC806CS Overdoor Light illuminates and sounds, visually and audibly guiding staff to the area.
Accepting an Alarm Call: A member of staff can acknowledge the alarm by pressing the 'Call Accept' button on the NC943B Call Controller. In its factory-fitted 'Call Accept' position, this action sends a slow pulsing signal to the overdoor light and reset point. All sounders and LEDs (except the ceiling/wall pull's LED) will remain active until the reset point's 'RESET' button is pressed, indicating that help is on the way.
Resetting the System: Once assistance has been provided, the alarm is cancelled by pressing the 'RESET' button on the NC809DBBT Accessible Toilet Reset Point. This returns the entire system to its normal state.
Engineer Selectable Functions: The NC943B Call Controller offers selectable link options (PLK1) to configure the 'Call Accept' button's operation. While the factory setting is 'Call Accept', it can also be configured to 'Reset the system' (cancelling the alarm and returning to normal state) or 'Have no effect'. It is recommended to keep the 'Call Accept' setting for BS 8300 compliance.
Volume Control: The call controller features a potentiometer (VR1) to adjust the volume of its on-board sounder, allowing for customization based on environmental needs.
System Expansion: The NC943B Call Controller can support up to three additional 800 Series devices, offering flexibility for expanded systems. This could include additional pull units or emergency call points like the NC804DE, which can generate a more urgent level of call, overriding existing alarms and causing the call controller's red 'Calling' LED, sounder, and relay to pulse, and the overdoor light to also pulse.
Volt-free Relay Output: The call controller includes a volt-free relay (RLY1) with contacts rated 30Vd.c. @ 1A. This relay can be used to switch optional externally powered devices such as sounders, strobes, or the extra low voltage coils of mains controlling relays, providing integration capabilities with other building systems.
The NC951 system incorporates features to ensure reliable operation and ease of maintenance.
Battery Backup: The NC943B Call Controller includes a battery backup facility, enabled by fitting link PLK2. When enabled, the system will continue to operate for approximately 24 hours (standby) plus 15 minutes (alarm running time) in the event of a mains failure. This is indicated by the call controller's power 'On' LED flashing green. The battery backup automatically shuts down after prolonged disconnection from mains to prevent deep discharge.
Sounder and LED Test Facility: With no calls on the system, pressing the call controller's 'Call Accept' button (with PLK1 in the Reset position) or the reset point's 'RESET' button will activate all system sounders and LEDs (except the ceiling/wall pull's LED). Releasing the button switches them off. This allows for quick and easy functional testing of the system's indicators and sounders.
Wiring and Installation Guidelines: The system provides clear guidelines for mains and extra low voltage (ELV) wiring, emphasizing segregation and appropriate cable types. All wall-mounting devices (excluding pull units) require a 25mm deep back box, and installers are advised to assess mounting surfaces for suitable screw fixings. The call controller is Class 2 equipment, and any metal parts used during installation, such as metal back boxes, must be earthed.
Modular Design: The components of the NC951 system can be wired in any order, offering flexibility during installation and potentially reducing wiring runs.
General| Type | Addressable Fire Alarm Panel |
|---|---|
| Zones | 8 |
| Compliance | EN54-2, EN54-4 |
| Input Voltage | 230V AC |
| Number of Zones | 8 |
| Communication | RS485 |
| Relative Humidity | Up to 95% non-condensing |
