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Twin Wire Fire Systems
Twin wire fire alarm systems have detection zones similar to conventional systems but with the added advantage of having sounders on the detection circuit. Including sounders on the detection circuit can save you money as you don't need to wire additional sounder circuits. In these systems the sounders are usually sited in each fire detector. Therefore any room with a detector sounder will always meet the 75 dBA sound level required for premises with sleeping residents such as bed and breakfasts, high multiple occupancies (HMOs), youth hostels and small nursing homes.
Combined fire detector sounders, flashing beacons and extra sounders can all be installed on the detection circuit, so if our engineers find the sound levels are not high enough, then we can simply install additional sounders on the detection circuit.
Multipoint detector
The multipoint detector has many advantages over a normal conventional detector such as having seven operational modes. These modes allow you to simply flick a switch to change an optical smoke detector to a fixed heat detector, or change a fixed heat detector to an ionisation smoke detector. You can also have a mixture of any two technologies, giving you a substantial amount of flexibility. If for example a cooker triggers a false alarm from a smoke detector, then the usual solution is to exchange the smoke detector for a heat detector. With a multipoint detector you can simply change the setting and make the smoke detector a heat detector which saves a considerable amount of time and money on having a new detector or system installed.
Remote relay outputs
The twin wire system also supports remote input and 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 and output unit on the detection circuit you can ensure the building interface is picked up with the minimum amount of wiring rather than wiring from the main control panel.
Control
Control and 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) and disabling of sounders or detection zones.
Twin wire plus systems
The Twinflex Plus protection system can significantly reduce the rate of false alarms which can save the time and cost associated with evacuating a building for no reason. When we plan the installation of your twin wire plus system we will designate the rooms in the building into either 'dwelling' (hotel rooms, student bedrooms, individual offices within a large building etc.) or 'communal' zones (kitchens, bars, dining rooms etc.). This means that the control panel can be programmed to take into account the different usage of these areas and a variable time alarm confirmation period can be entered.
If a detector is triggered in a dwelling zone then just the alarm in that area will sound. As the control panel has to be programmed to check every so many minutes to detect if this specific alarm is still being triggered, the system will be able to tell if the fire is genuine or if it's a false alarm generated by cooking for example. If it is a false alarm then the detector will stop signalling and the control panel will automatically reset the system. If during the timed checks the detector is still signalling a fire it will then activate all the alarms within the building so everyone can be evacuated safely.
Rafiki - Twin Wire Systems
For over eight years we have worked with Rafiki who have been the main innovators and market leaders in twin wire systems and are an approved Rafiki Fire Systems installation company. Please visit Rafiki online to find out more.
