The main panel operates as either a stand alone system, or for larger installations, through a network of repeater panels. Electro-Detectors has designed a repeater panel specifically for the purpose, using all the common features of the main panel. The repeater panel is even smaller than the main panel and is intended to be sited in an inconspicuous position, requiring only a mains supply. All communication and data retrieval is accomplished by radio via the main panel.
 

Detector Units

Each analogue Millennium detector unit is powered by two lithium batteries, one providing back up supply to the other. The batteries are monitored throughout their life and any impending failure is pre-empted by an early warning giving a minimum of 60 days normal use before the failure occurs.

The unit sends a verification signal at regular intervals to confirm its communication path. Should any fire or fault condition be detected then that information is transmitted immediately.

The LED on the detector will flash during a fire or fault condition and for 15 minutes afterwards unless the unit is reset manually within that time. Each unit has an internal sounder to give local indication of fire. Each detector has the facility for a remote unit with the wiring between them being constantly monitored by the transmitter unit.

Optical Smoke Detector EDA-R300

The detector operates by detecting the scatter of a pulse of infra-red light in the presence of smoke. The use of pulse techniques and sophisticated electronic circuitry provides a sensitive detector with low current consumption and ensures freedom from false alarms.

lonisation Smoke Detector EDA-J300

Using a dual ionisation chamber incorporating less than O.7uCi Americium 241, this detector operates by measuring the change in ionisation current caused by smoke entering the chamber. This type of detector detects both visible and invisible smoke and is particularly suitable for protection of areas where volatile material is present.
 

Rate of Rise Heat Detector EDA-D300
The rate of rise heat detector is a sensitive device capable of detecting small but rapid changes in temperature. The detector may be used in place of a smoke detector where the normal environment frequently contains smoke, for example, tobacco smoke or engine fumes. The detector incorporates an upper temperature alarm of S8~C, conforming to response grade 1 category of 855445 part 5.
 

Fixed Temperature Heat Detector EDA-S300

The detector incorporates a temperature sensitive semiconductor which senses a rise in the ambient temperature and operates at a preset value. Available at 6S~C and 75C conforming to the response grades 2 and 3 of BS5445 respectively. For buildings with higher ambient temperatures e.g. boiler houses, detectors are available at lOOC but the radio transmitter should be sited outside the high temperature area.
 

Callpoint EDA-C200

The callpoint is a frangible type 855839 part 2 which is operated by breaking the glass. The transmitter is electrically similar to the detector unit but is housed in a rectangular case for mounting directly onto a wall. An LED indicator is provided and the reset is achieved using a magnet to operate the internal reed switch. A test key with a magnet attached is provided.
 

Transmitter Unit EDA-T200

The unit is provided to interface other types of trigger devices such as beam detectors, air conditioning duct probes, aspiration systems or gas extinguishing systems into the Millennium FDA fire system. The interconnect wiring is fault monitored. On activation of the trigger device a signal will be sent to the main control unit which will show the type of device and its location.
 

Sounder Unit EDA-A200

The unit is a self-contained electronic sounder incorporating both a radio transmitter and receiver requiring no external wiring. It contains two seperate battery supplies, one acting as a backup to the other, with sufficient capacity for up to 5 years use under normal conditions. Tone adjustments are provided both by internal selections or by transmitted signals thereby enabling the sounder to provide several types of audio signal. Should a fault occur, the unit will be identified by its address and if available, its location. Specified as an option, the sounder can also provide a control signal to operate other equipment such as door release holders and remote signalling equipment which can be controlled independently of the sounder operation.

Applications Installations

The Millennium Analogue Addressable EDA tire alarm system is suited to all types of proposed installation, however it is most commonly specified where one or more of the following constraints are present.

• Existing buildings where normal trigger circuits (i.e. zone or loop wiring) or alarm sounder circuits need to be hidden.

• Environments where the disruption caused by hard wiring is unacceptable.

• Buildings where the internal decoration is too ornate or valuable to be disturbed.

• Sites where it is necessary to link remote buildings into an integrated fire alram system.

• New buildings where the architectural requirements dictate that all cable must be hidden, e.g. glass atriums.

• Temporary installations where the system needs to be installed and removed at a moment's notice.

Typical installations are hospitals, nursing homes, listed and heritage buildings, schools, colleges, theatres, leisure centres, airports, stations and hotels.

Existing alarm systems may also be interfaced to the Millennium EDA system, thus offering a cost effective means of upgrading. The installation of a Millennium EDA system is rapid and nondisruptive. Only the control units require wiring to a power supply. All other components are self powered and can be installed directly onto walls and ceilings without prior preparation of cable channels. The base unit of each component can be detached and fitted in the appropriate location. The unit is programmed using the internal switches (or software blown on later versions) and then simply fitted to the base. All detector units have a common base fitting and are thus interchangeable.