Twin Wire Fire Systems

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twin wire system

Twin wire systems are fire alarm systems which are similar to a conventional system in the fact that they have detection zones, however with twin-wire systems the main advantage is you can put sounders on the detection circuit.

This can provide great advantages & cost savings by not having to wire an additional sounder circuits.

The sounders are usually sited in each fire detector, this can ensure that any room with a combined fire detector sounder will always meet the 75 dBA sound level required for premises with sleeping residents such as bed & breakfasts, small hotels, High Multiple Occupancy's (HMO's), Youth Hostels & small nursing homes.

Combined fire detector/ sounders, standalone flashing beacons & standalone sounders can all be installed on the detection circuit, so if on commissioning the system we find the sound levels are not high enough then it's a simple exercise to install additional sounders on the detection circuit.

Multipoint detector

The Multipoint detector has many advantages over a normal conventional detector.

The multisensor not only includes the sounder as mentioned above, but also has 7 operational modes.

Simply by the flick of a switch you can change a optical smoke detector to a fixed heat detector, or change a fixed heat detector to an ionisation smoke detector, also you can have mixture of any 2 technologies.

The benefit of this is that if you have a false alarm from say a near by cooker from a smoke detector then the usual solution is to exchange the smoke detector for a heat detector. With a multipoint detector rather than having to swap the detector completely (at a cost) you can simply change the setting on the multipoint detector & make the smoke detector a heat detector.

Remote relay out puts

The twin wire system also supports remote input / output interface units, this is particularly useful if a building interface such as a lift control shutdown is required but is a long distance from the main panel.

Simply by installing a remote input/output unit on the detection circuit you can ensure the building interface is picked up with the minimum amount of wiring rathr than wiring from the main control panel.

Control

Control & operation of the main control panel is usually by a key or code, this restricts access to the panel to the specified users only.

A range of options are available such as one man walk test (useful for weekly testing), disabling of sounders or detection zones.

Twin wire PLUS systems.

The Twinflex plus protection system has communal & dwelling zones, if a detector is triggered on a communal zone a full evacuation will be signalled & all sounders in the premises will operate.

If a detector is operated on a dwelling zone, a timer is triggered, the detector/s or zone which the triggered detector/s are on are operated, after a predetermined time (to be agreed with housing officer or fire officer) has elapsed the system will either clear & stop the sounders on that particular zone (that is if the detector is no longer in fire mode) or if the detector is still in fire it will then activate all sounders with in the building.

The Twinflex installation will stop false alarms from different flats/bedsits evacuating the whole building & stop complacency from any other residents while still giving protection of the residents & property by giving an alarm if the tenant is not in or the alarm is not cleared in time.

A Twinflex alarm is ideally suited multi tenanted buildings such as student accommodation, flats and office space.

Rafiki - Twin-wire equipment used by Assured Fire & Security.

For over 8 years we have had an excellent trading relationship with Rafiki, who have been the main innovator & market leader in Twin-wire systems, please click on the link below to find out more.

Rafiki - http://www.rafikiprotection.com

We are an approved Rafiki Fire Systems installation company.