dact-ud2 module manual(digital alarm communicator/transmitter)
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Digital Alarm Communicator/Transmitter
PN: 53037:B ECN 08-188
Document #530374/01/08 Revision: B
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automatic fire alarm systemtypically made up ofoke detectors, heat detectors, manual pull stations,dible warning devices, and a fire alarm control panel with
ote notification capabilitycan provide early warning of aveloping fire. Such a system, however, does not assuretection against property damage or loss of life resultingm a fire.e Manufacturer recommends that smoke and/or heattectors be located throughout a protected premise follow- the recommendations of the current edition of thetional Fire Protection Association Standard 72 (NFPA 72),nufacturer's recommendations, State and local codes,d the recommendations contained in the Guides foroper Use of System Smoke Detectors, which are madeailable at no charge to all installing dealers. These docu-nts can be found at http:/www.systemsensor.com/html/
plicat.html. A study by the Federal Emergency Manage-nt Agency (an agency of the United States government)icated that smoke detectors may not go off in as many as% of all fires. While fire alarmstems are designed to provide early warning against fire,y do not guarantee warning or protection against fire. A alarm system may not provide timely or adequaterning, or simply may not function, for a variety of reasons:oke detectors may not sense fire where smoke cannotch the detectors such as in chimneys, in or behind walls,
roofs, or on the other side of closed doors. Smoketectors also may not sense a fire on another level or floora building. A second-floor detector, for example, may notnse a first-floor or basement fire.rticles of combustion or "smoke" from a developing firey not reach the sensing chambers of smoke detectorscause:arriers such as closed or partially closed doors, walls, orhimneys may inhibit particle or smoke flow.moke particles may become "cold," stratify, and not
each the ceiling or upper walls where detectors areocated.moke particles may be blown away from detectors by airutlets.moke particles may be drawn into air returns before
eaching the detector.e amount of "smoke" present may be insufficient to alarmoke detectors. Smoke detectors are designed to alarmvarious levels of smoke density. If such density levels aret created by a developing fire at the location of detectors, detectors will not go into alarm.oke detectors, even when working properly, have sens- limitations. Detectors that have photoelectronic sensing
ambers tend to detect smoldering fires better than flam- fires, which have little visible smoke. Detectors that haveizing-type sensing chambers tend to detect fast-flamings better than smoldering fires. Because fires develop in
ferent ways and are often unpredictable in their growth,ither type of detector is necessarily best and a given typedetector may not provide adequate warning of a fire.oke detectors cannot be expected to provide adequaterning of fires caused by arson, children playing with
age of flammable materials, etc.).Heat detectors do not sense particles of combustion analarm only when heat on their sensors increases at apredetermined rate or reaches a predetermined level.Rate-of-rise heat detectors may be subject to reducedsensitivity over time. For this reason, the rate-of-risefeature of each detector should be tested at least onceper year by a qualified fire protection specialist. Heatdetectors are designed to protect property, not life.IMPORTANT! Smoke detectors must be installed in thesame room as the control panel and in rooms used bythe system for the connection of alarm transmissionwiring, communications, signaling, and/or power. Ifdetectors are not so located, a developing fire maydamage the alarm system, crippling its ability to reporta fire.Audible warning devices such as bells may not alertpeople if these devices are located on the other side ofclosed or partly open doors or are located on anotherfloor of a building. Any warning device may fail to alertpeople with a disability or those who have recently con-sumed drugs, alcohol or medication. Please note that: Strobes can, under certain circumstances, cause
seizures in people with conditions such as epilepsy. Studies have shown that certain people, even when
they hear a fire alarm signal, do not respond or com-prehend the meaning of the signal. It is the propertyowner's responsibility to conduct fire drills and othertraining exercise to make people aware of fire alarmsignals and instruct them on the proper reaction toalarm signals.
In rare instances, the sounding of a warning devicecan cause temporary or permanent hearing loss.
A fire alarm system will not operate without anyelectrical power. If AC power fails, the system willoperate from standby batteries only for a specified timeand only if the batteries have been properly maintainedand replaced regularly.Equipment used in the system may not be technicallycompatible with the control. It is essential to use onlyequipment listed for service with your control panel.Telephone lines needed to transmit alarm signals froma premise to a central monitoring station may be out ofservice or temporarily disabled. For added protectionagainst telephone line failure, backup radio transmis-sion systems are recommended.The most common cause of fire alarm malfunction isinadequate maintenance. To keep the entire fire alarmsystem in excellent working order, ongoing maintenancis required per the manufacturer's recommendations,and UL and NFPA standards. At a minimum, the requirments of NFPA 72 shall be followed. Environments withlarge amounts of dust, dirt or high air velocity requiremore frequent maintenance. A maintenance agreemenshould be arranged through the local manufacturer'srepresentative. Maintenance should be scheduledmonthly or as required by National and/or local fire codeand should be performed by authorized professional fir
While a fire alarm system may lower insurancerates, it is not a substitute for fire insurance!ire Alarm System LimitationsPrecauLarge.PMD 02/26/2007
tches (especially in bedrooms), smoking in bed, andlent explosions (caused by escaping gas, improper stor-
alarm installers only. Adequate written records of allinspections should be kept.
InRNING - Several different sources of power can bennected to the fire alarm control panel. Disconnect allurces of power before servicing. Control unit and asso-ted equipment may be damaged by removing and/orerting cards, modules, or interconnecting cables while unit is energized. Do not attempt to install, service, or
erate this unit until this manual is read and understood.UTION - System Reacceptance Test after Softwareanges. To ensure proper system operation, this productst be tested in accordance with NFPA 72 after anygramming operation or change in site-specific software.acceptance testing is required after any change,dition or deletion of system components, or after anydification, repair or adjustment to system hardware or
ring. components, circuits, system operations, or softwarections known to be affected by a change must be 100%ted. In addition, to ensure that other operations are notdvertently affected, at least 10% of initiating devices that not directly affected by the change, up to a maximum of
devices, must also be tested and proper systemeration verified.is system meets NFPA requirements for indoor dryeration at 0-49 C/32-120 F and at a relative humidity of 2% RH (non-condensing) at 32 2 C/90 3 F.wever, the useful life of the system's standby batteriesd the electronic components may be adversely affected extreme temperature ranges and humidity. Therefore, itrecommended that this system and all peripherals betalled in an environment with a nominal room tempera-e of 15-27 C/60-80 F.rify that wire sizes are adequate for all initiating andicating device loops. Refer to manual Specifications
ction for maximum allowable I.R. drop from the specifiedvice voltage.
Like all solid state electronic devices, this system mayoperate erratically or can be damaged when subjected tolightning-induced transients. Although no system iscompletely immune from lightning transients andinterferences, proper grounding will reduce susceptibility.Overhead or outside aerial wiring is not recommended, duto an increased susceptibility to nearby lightning strikes.Consult with the Technical Services Department if anyproblems are anticipated or encountered.Disconnect AC power and batteries prior to removing orinserting circuit boards. Failure to do so can damagecircuits.Remove all electronic assemblies prior to any drilling,filing, reaming, or punching of the enclosure. Whenpossible, make all cable entries from the sides or rear.Before making modifications, verify that they will notinterfere with battery, transformer, and printed circuit boarlocation.Do not tighten screw terminals more than 9 in-lbs.Over-tightening may damage threads, resulting in reduceterminal contact pressure and difficulty with screw terminaremoval.This system contains static-sensitive components.Always ground yourself with a proper wrist strap beforehandling any circuits so that static charges are removedfrom the body. Use static-suppressive packaging toprotect electronic assemblies removed from the unit.Follow the instructions in the installation, operating, andprogramming manuals. These instructions must befollowed to avoid damage to the con