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Fike Twinflex 2 Wire Fire Alarm System

Fike Twinflex A 2 wire, conventional fire alarm control panel allows for a cost-effective and adaptive system to be installed in smaller applications such as HMO's and small office buildings. Fike offers an intelligent conventional 2 wire system which uses features for nuisance alarm filtration called 'Checkpoint' technology.

Twinflex 2-Wire Fire Alarm System

Fike provides a 2 wire conventional panel that also incorporates Checkpoint technology, giving the panel the ability to set a pre-alarm in individual rooms but activate a full alarm at the detection of a fire in a communal area.

Fire zones are designated as 'dwelling' or 'communal' at the planning stage so detectors in the dwelling zone are enabled with 'logical link', only alerting occupants of that particular dwelling when an alarm is activated.

In a 'communal zone', such as a hallway, kitchen or lounge, when a detector alarm is activated the control panel enters the fire state and the alarms are activated immediately throughout the installation.

In a 'single dwelling per zone', such as a flat with more than one room, when a detector alarm is activated all sounders on the zone are activated and then the control panel carries out the configured number of confirmation checks. If the alarm is confirmed the control panel enters the fire state and alarms are activated throughout the installation; if the alarm is rejected the sounders on the zone are silenced and the detector reset.

In a 'multiple dwellings per zone', such as a hostel, hall of residence, hotel rooms or bedsits, when a detector alarm is detected the integral sounder in the detector that generated the alarm signal is activated and then the control panel carries out the configured number of confirmation checks. If the detector alarm is confirmed, the control panel enters the fire state and the alarms are activated throughout the installation; if the detector alarm is rejected the sounder is silenced and the detector reset.

Fike Twinflex 2 Wire Fire Alarm System

Using multipoint detectors as part of the Twinflex 2 wire system means that when a detector is wired in, a sounder is wired in too with no extra wiring needed. So a whole system can be installed using only one pair of wires and reducing the number of points that need to be installed.

Fike multipoint detectors offer 7 different modes of detection including 3 smoke modes, 2 fixed temperature heat modes, a rate of rise mode and a combination smoke and heat mode.

Twinflex manual call points can be run on the same pair of wires as the detectors and the control panel can differentiate between call point and detector alarm.

Twinflex 2 wire control panels can accommodate up to 32 devices per zone with separate fault monitoring displays for each zone and a one man walk test facility.

Twinflex Plus 2 Wire Fire Alarm Control Panels

Twinflex Plus 2 Wire Control Panel The Twinflex Plus Control Panel range offers a complete fire alarm system on just 2 wires and incorporate CHECKPOINT technology in 2, 4 or 8 zones. The 2 and 4 zone panels are controlled by access code and the 8 zone is controlled by a key switch.

Features includes:

Break glass identification on panel - LED indication on panel display to differentiate between call point or detector alarm.
72 hour standby
All panels have 1 auxiliary sounder circuit. Local sounder will operate until alarm in confirmed or rejected.
Programmable (1-5 minute) automatic detector 'Alarm-Confirmation' in dwelling zones.
Special warning on panel for head contamination - LED indication on panel display to signal that optical chamber is nearing the end of its lifespan and should be changed.
Walk test facility, easy to install and configure.
Wide range of input and output functions to make system interfacing simple.
Dual purpose flush or surface housing for the 2/4 zone panel. Optional bezel available for 8 zone panel.

Twinflex Multipoint Detectors

Twinflex Multipoint Detector Specifiers and installers who choose the multipoint detector are safe in the knowledge that the fire detection performance of the detector can be matched to the environment it is installed within and changed at any time. To change the mode of detection you simply configure the DIL switch in the detector electronics module. All modes of detection 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 2 Wire system.

The Twinflex multipoint detectors offer 7 different modes of detections including:

SMOKE 1: High ceilings, a risk of free burning fires or fires that need to be detected extremely quickly where ionisation detectors would normally be fitted.

SMOKE 2: Risk of smouldering fire and for fire escapes where optical detectors would normally be fitted.

SMOKE 3: Areas 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 detection is made. This mode is ideal for hotel bedrooms with en-auite bathroom.

HEAT 1: Rate of Rise

HEAT 2: Standard Fixed Temperature - 58°C, suitable for kitchens etc.

HEAT 3: High Fixed Temperature - 90°C approx, suitable for boiler rooms etc.

The Twinflex multipoint detector also has the benefit of a combined mode (SMOKE 2 & HEAT 2) where a smoke or heat source can trigger a fire decision, giving the end user optimum fire protection. All Twinflex products feature an End of Line switch, which negates the need for End of Line resistors. To ensure the detection capabilities of the mulitpoint 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. To make maintenance easy, the multipoint features a disposable optical chamber so it can easily be replaced.

Twinflex Manual Call Point

Twinflex Manual Call Point These call points are available with an optional integral sounder with 4 different sound patterns and comes with a resettable element so the need for replacement glass is negated as the unit may be reset using a call point test key.

The test key is inserted into the front of the unit in order to allow access for use wherever it may be sited. The call point can also be tested by depressing the element.

Every call point comes with an LED for indication of End of Line and Alarm, There is no need to remove the front cover and the glass at installation, just one screw fixes the whole unit together.

The back box can be fitted at the time of installation with other first fix item or it can be fitted retrospectively later. The call point is connected to the back box using simple flying lead terminations.

A weatherproof version is available with an IP55 weatherproof rating.

Twinflex Hatari Sounder

Twinflex Hatari Sounder Although Twinflex Multipoint detectors have an optional integral sounder, the Hatari sounder offers a higher sound output, which can be utilised where there is a need for a standalone sounder rather than automatic detection technology.

The field wiring is terminated to fixed connectors in the base and a "deep base" is available as a separate item if required.

A bayonet locking mechanism means the sounder is easy to install and the anti-tamper feature ensures that the Hatari is only released with the use if the head removal tool.

Twinflex Flashpoint

Twinflex Low Profile Flashpoint The Twinflex Flashpoint allows a simple and effective visual indication directly from the 2 wire zone, complete with a sounder.

This 2 wire zone powered combined sounder and beacon is available in a low profile or domed version. Whilst in alarm the flashpoint synchronisation is uniquely reset every 10 seconds to ensure that the beacon's flash rate remains in absolute synchronicity across the entire system.

Installation is made simple by first fixing the base and then simply plugging in the unit. The Flashpoint features an anti-tamper mechanism to ensure that the device is only released with the use of the head removal tool.

A weatherproof version is available with an IP55 weatherproof rating.

Twinflex Soundpoint

Twinflex Soundpoint White The Twinflex Soundpoint back box is common with the Fike callpoint and be fitted at the time of installation with other first fix items or the Soundpoint can be fitted later. An adaptor plate is also supplied for use with standard flush or surface backboxes.

The device is connected to the back box using simple flying-lead terminations.

The Twinflex Soundpoint is ideal for areas that do not require automatic detection and is available in red or white.

A weatherproof version is available with an IP55 weatherproof rating.

Twinflex Output Module

The Twinflex Output Module is available for interfacing to other systems in the field. Ideal for operating plant shutdown, door release mechanisms, access control override etc.

The Twinflex Output unit connects to the zone wiring providing a 230v AC rated SPCO relay contact for switching purposes.

The module also provides a 'Fault Input' to allow fault indication from relevant ancillary equipment.

The industry standard double gang housing allows for ease of installation for either flush or surface mounting and is connected to field wiring with fixed PCB mounted terminals.

Twinflex Repeater Panel

The Twinflex Repeater Panel offers extended control for your system and are available in 8 or 16 zones, system controls are accessed by key switch operation.

The housing is common with the 2/4 zone Twinflex 2 wire panels giving a dual purpose flush or surface housing.

Power is derived from the main control panel so batteries and a mains supply are not required at the repeater. Multiple panels may be connected to one repeater panel for central control of multi system sites.

Using Fike Twinflex 2 Wire Fire Alarm System

The Multipoint detectors and manual call points are arranged into zones in order to aid identification of the source of a possible fire. The number of zones depends on the size of the building, any existing fire routines, escape routes, zone accessibility and structural fire compartmentation. A chart or drawing should be provided indicating the area and layout of the zones so appropriate action can be taken in the event of a fire alarm. The Twinflex fire alarm system may be interfaced with the building services, for example the air conditioning may be shut down when the alarm sounds, which could affect routine system testing.

User Responsibilities

Under BS 5839-1:2002, the responsible person is the "person having control of the building and/or premises, whether as occupier or otherwise, or any person delegated by the person having control of the building and/or premises to be responsible for the fire alarm system and fire procedures." the responsible person is required to undertake certain tasks with respects to testing and maintaining the fire alarm system. Written procedures should be in place for the actions taken by occupants in the event of a fire and ensure staff have received adequate training to operate the system. The responsible person must also liase with the building maintenance personnel to ensure their work does not impair or affect the operation of the fire alarm system.

System Testing: when carrying out routine tests, the responsible person should advise the remote monitoring centre if necessary or isolate the link using the control panel.

Daily: check panel indicates normal operation and faults are recorded. Check previous faults have been dealt with.
Weekly: at least one detector or call point should be operated to test the ability of the control equipment to receive a signal and sound the alarm. A different device should be tested each time if possible so each zone on the system is tested at least once in a 13 week period. Results should be recorded in a log book.
Quarterly: system should be checked by a fire alarm service organisation i.e. the system installer or an approved maintenance company. These checks are normally arranged via a maintenance agreement and should include a visual inspection of the installation and functional checks to confirm operation of the system. Any defects should be recorded in the log book and reported to the responsible person along with a certificate of testing.
Annual: requirements are similar to the quarterly test except that each device on the system should be tested.

After a fire, advise the servicing company and arrange for the system to be tested by them. A certificate of testing should be issued to confirm the system operation following the inspection and any remedial work that is necessary.

When a false alarm is detected, always make a note of the illuminated indicators and messages displayed at the control panel to assist the servicing company in identifying the false alarm. Try and identify the activated device and do not reset the system until the area of the incident has been inspected. Record any other incidents occurring at the same time which could have affected the system such as a power failure. The service organisation will be more likely to trace the false alarm with this information available.

When a fault is reported by the control panel, note all illuminated LEDs and the circumstances at the time the fault occurred and report to the servicing company. Faults should not be left unreported, the service company will advise whether the system is still able to respond to a fire alarm.

Installing and Operating Fike Twinflex 2 Wire Fire Alarm System

This is an intelligent 2-wire system with conventional type cabling format and is classed as an 'analogue non-addressable' system due to the architecture used within the system design. All field devices are connected via a common 2-core and earth/screen cable and communicate with the control panel using the 'Twinflex' data protocol.

The Twinflex 2-wire panel is able to recognise and separately indicate a detector alarm and a manual call point alarm. It also monitors each zone for detector head removal, device fault, 'End-of-line' fault and open or short circuit fault.

Every Twinflex device has an inbuilt 'End-of-line' signal, which can be activated as required so there is no need to use a resistor for 'End-of-line'. It also provides a single conventional 24v sounder circuit, monitored conventional 24v relay circuit, volt free common fire relay and volt free common fault relay. There is also a multifunction non-latching input programmable with options such as 'Class-Change' and 'Remote Fire Input'.

The Twinflex control panel incorporates an integral power supply unit and requires 2 x 12v 2.1 Ah batteries for 2 or 4 zone panels and 2 x 12v 3.3 Ah or 7.2 Ah batteries for the 8 zone panel.

All Twinflex devices are compatible only with Twinflex control panels and their associated detection and alarm equipment and may be installed on the same zone as detectors, the manual call point, Hatari sounders and input/output modules.

Cabling should be 2 core 1.5mm² screened and fire resistant, of an MICC or FP200 equivalent type and in the form of a 2-core radial circuit from the control panel to the last device. Do not spur from the circuit.

2 Wire Control Panel

Identify a location where the panel is easily accessible, taking into account any subsequent work which may affect access. It should be mounted on a flat, vertical wall at a height where the indicators may be seen without difficulty.

The position should be clean and dry, not subjected to high levels of vibration or shock, at least 2 meters away from any pager or radio transmitting equipment and not directly over a radiator or heater. The control panel may operate erratically or may be damaged if subjected to lightening induced transients so proper earth/ground connections will greatly reduce susceptibility to this problem.

The 2 & 4 zone panel back box is a dual-purpose surface or flush unit, the 14mm flange facilitates flush mounting. The 8 zone panel is designed for surface mounting only and requires additional flush mount bezel if required to be flush mounted.

Twinflex Multipoint Detector

Fix the detector base in a suitable position allowing enough space for the correct termination of the appropriate fire resistant cable.

Once all testing has been carried out and 'continuity & integrity' has been proven, the detector may be assembled. Set the on-board dil switches as required before inserting the Electronics Module, locating pins and gently pushing home. The optical chamber can then be offered up and twisted to locate until the catch operates; if the Electronic Module is correctly located then the optical chamber should locate with little force.

When the optical chamber is installed, the detector can be powered up. This takes around one minute to boot up and settle down to normal operation. Do not test the detector during this time.

The multipoint detector settings can be changed using the DIL switch either when the detector is powered or when the system is shutdown.

Contaminated optical chambers should be replaced to maintain the correct performance of the system. Firstly, locate the detector indicating 'Fault' on the control panel and remove the chamber with the Head Removal Tool and replace with new one. Fault indication should clear in 30-45 seconds.

When testing a detector, ensure the right equipment is used such as a smoke or heat detector tester aerosol. The detectors may respond more slowly due to the fact there is no heat present to cause the sensitivity. Avoid drenching the detector with large amounts of test smoke as it can leave a sticky residue behind.