The Multipoint detector offers the following modes of detection:

SMOKE 1
Used where ionisation detectors are normally fitted especially when there are high ceilings or a risk of free burning fires (chemical stores etc), or fires that need to be detected extremely quickly

SMOKE 2
Used where optical detectors are normally fitted when there is a risk of a smouldering fire and for escape routes

SMOKE 3
This setting is designed for use in areas that are prone to nuisance alarms. The reduced sensitivity linked with a time delay feature means that a higher concentration of smoke needs to be present for a constant time period, before a fire decision is made. This setting, for example, is ideal for hotel bedrooms with ensuite shower rooms, the end user can change the setting from smoke 2 to smoke 3 if nuisance alarms are becoming a problem – whilst still offering optimum protection of a smoke detection setting, especially if this is
what has been specified.

HEAT 1 (Rate of Rise)
Used where a standard rate of rise detector would normally be used

HEAT 2 (Standard Fixed Temperature - 58ºC approx) Used where a standard fixed temperature heat
detector would normally be fitted, suitable for kitchens etc

HEAT 3 (High Fixed Temperature - 90ºC approx) Used where a high fixed temperature heat detector would normally be fitted, suitable for boiler rooms etc.

Areas Covered in South Devon

We provide electrical services for both domestic and commercial clients through out Dartmoor and including the following towns and villages.

Moretonhampstead
Bovey Tracey
Chagford
Exeter
Newton Abbot
Okehampton
Ashburton
Buckfastleigh
Kingsteignton
Chudleigh
Manaton
Widecombe
Princetown

Multipoint Detector central to all systems

Multi-criteria detector, micro-processor control and integral sounder

The “Multipoint” detector has set new standards in detector technology, using microprocessor control even as a conventional detector and offering the installer a full range of detection capabilities with audible warning in one compact device. Specifiers and installers who choose the Multipoint detector, do so secure in the knowledge that the fire detection performance of the detector can be matched to the environment in which it is installed – and changed any time during the lifetime of the installation. The mode of detection required can be simply changed by configuring the DIL switch in the detector electronics module (also configurable via commissioning software on addressable systems). All modes are compliant with European detector type specifications, and are suitable for use in installations compliant with BS5839: Part 1: 2002, Part 6 2004 if used in conjunction with a “Twinflex Plus” system.

The Twinflex Intelligent conventional detector can be set to any one of the above modes as well as a Combined Mode (Smoke 2 & Heat 2) where a smoke or heat source can trigger a fire decision. This means the end user is given optimum fire protection, even if the installer is unsure of the use of the particular area where the detector is sited. As part of the Twinflex system all Twinflex products including the Twinflex Multipoint detector feature an End of Line switch, which negates the
need for End of Line resistors.

The Sita Intelligent addressable detector is able to offer all the opposite choices for detection, set to one mode, or a combination of any listed to give a choice of up to 15 different settings. It is set via a PC when
programming the system. The Sita Multipoint also has an in-built loop isolator as well as an I/O for local control and switching. The Multipoint Detector also has the unique benefit of an optional full specification integral sounder. A 90dBA output can be achieved. The Twinflex Intelligent conventional detector can be set to 3 different sound patterns, as well as switched off, with 2 sound output levels. The Sita Intelligent addressable detector has 7 different sound patterns and 3 volume settings.

To ensure the detection capabilities of the Multipoint are never compromised it self-calibrates every 6 hours. It continuously monitors for dust contamination, until, over a period of time depending on the environment it reaches a point where the chamber becomes saturated. Before this can develop into a false alarm situation, the panel will indicate that a Multipoint needs attention on both the Twinflex and Sita systems. To make maintenance easy, the Multipoint features a disposable optical chamber. This means the chamber can be simply thrown away, and replaced economically when necessary.

The Twinflex conventional fire alarm system

The Twinflex conventional fire alarm system incorporating the Multipoint combined smoke and heat detector with built-in sounder means the whole system can be installed using only one pair of wires Using the Multipoint detector as part of the Twinflex 2-wire fire alarm system means that when a detector is wired in, a sounder is too - with no extra wiring, therefore greatly reducing the number of points that need to be installed and the time it takes to install. As Multipoint offers 7 different modes of detection, the installation is made even simpler as this one device suits all applications. Whatever type of detection is required, for any part of the installation it can be selected by the flick of a switch at the time of commissioning. 3 different smoke modes, 2 fixed temperature heat modes, a rate of rise mode and a combination smoke or heat mode can be selected.

As the Multipoint detector is available with or without a full specification integral 90 dBA sounder (for only a marginal cost difference) no extra devices need to be purchased when audible warning is required. (As the
audibility levels recommended in BS5839 Part 1:2002.) If extra sound is required, or, for areas that do not require detection, then a choice of several different stand alone sounders can be used on the same two wires, as well as a call point /sounder combined unit and a sounder beacon.

The panel has the ability to differentiate between call point or detector alarm, can accommodate 32 devices per zone, has separate fault monitoring display for each zone, one man walk test facility and zones
are configured without the need to use resistors or capacitors on unused zones. To make the Twinflex system even more flexible, BNC can also provide a special Output Unit. It can be situated anywhere on the zone circuit, and is ideal for connecting to plant shutdown, door release mechanisms etc.

Repeater panels are also available for the Twinflex system, which use key switch access and have the facilities of silence, sound alarms and reset.