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<br />@ Flre.UTe" AlarmS <br /> <br />June 22, 1998 <br />2412 and 2424 <br />4-Wire Photoelectric Smoke Detectors <br />with Optional Horn & Thermal Sensors <br /> <br />F-545 <br /> <br />Section: Conventional Initiating Devices <br /> <br />GENERAL <br /> <br />The System Sensor 2400 Series photoelectric detector is <br />specifically designed to meet the stringent performance re- <br />quirements of industrial and municipal fire detection and <br />alarm systems. The design of these detectors emphasizes <br />ease of installation and field maintenance. <br /> <br />FEATURES <br /> <br />· 12 or 24 VDC operation <br />· Unique optical sensing chamber: <br />- Superior signal-to-noise ratio. <br />- Built-in signal processing. <br />- 3.0% nominal sensitivity. <br />. Removable cover for field cleaning. <br />· Visible LED "blinks" in standby, latches on in alarm. <br />· Sealed against dirt, insects, and back pressure. <br />· Optional built-in 1350F (570C) thermal. <br />. Three-year limited warranty. <br />· Field metering of detector sensitivity. <br />· Built-in test capability. <br />· Low standby current. <br />. Twist-on mounting bracket with tamper option. <br />. Designed for direct surface or electrical box mounting. <br />· Models available with built-in 85 dBA piezoelectric horn. <br />· Insect-resistant screening with 0.020" (0.508 mm) open- <br />ings. <br />· Isolated or integrated operation of thermal available (cer- <br />tain models). <br />. SEMS screws for easy wiring. <br />· Meets performance criteria designated by UL 268. <br />· Built to withstand air velocities up to 3,000 feet (914.4 <br />meters) per minute without triggering a false alarm. <br /> <br />APPLICATIONS <br /> <br />Use to contribute to life safety, fire protection, and property <br />conservation. Photoelectric detectors are recommended <br />in areas where smoldering fires are likely to ignite. In ar- <br />eas where small combustion particles are usually present <br />from forklift trucks, cooking stoves, etc., they are less likely <br />than ionization detectors to produce false alarms. <br /> <br />For further information, see System Sensor manual 156- <br />407-03, "Applications Manual for System Smoke Detec- <br />tors, "which provides detailed information on detector spac- <br />ing, placement, zoning, wiring, and special applications. <br /> <br />@ @ ,i.~ ~~:~:~I~~ <br /> <br />LISTED ~,,~~ 7257-1209:103 <br />S911 CS308 7257-1209:134 <br /> <br /><8> 1~~~ <br /> <br />OQ6A 1 .AY (2424AIT, 2424A T) <br />1346-88-SA <br />(2412B, 2412THB, <br />2424, 2424TH) <br /> <br />MEA <br /> <br />427-91-E Vol. III <br />(2412AT, 2424, 2424AIT, <br />2424A T, 2424TH) <br /> <br />. <br /> <br /> <br />, <br /> <br />CONSTRUCTION AND OPERATION <br /> <br />All 2400 Series photoelectric smoke detectors contain a <br />unique optical sensing chamber designed to sense the <br />presence of smoke particles produced by a wide range of <br />combustion sources. A custom integrated circuit incorpo- <br />rates signal processing to reduce false alarms and sample/ <br />hold circuitry to provide easy field metering of sensitivity. <br /> <br />The optional built-in piezo horn produces an interrupted <br />85 dBA tone at 10 feet (3.048 m). The horn operates upon <br />polarity reversal of the supply voltage, when the unit senses <br />smoke, or when the thermal reaches its alarm point (inte- <br />gral thermal models only). <br /> <br />This document is not intended to be used for installation purposes. We try fo keep our producf <br />information up.to-date and accurate. We cannot cover all specific applications or anticipate all <br />requirements. All specifications are subject to change without notice. For more information, <br />contact Flre.Ute Alarms, One Fire.Lite Place, Northford, Connecticut 06472. Phone: (800) 627- <br />3473, Toll Free FAX: (877) 699-4105, FAX Back:(888) 388-3299 <br />WEB: www.firelite.com <br /> <br />ISO 9001 <br /> <br />CERTIFIED <br /> <br />.....,-- <br /> <br />DF-50529 - Page 1 of 3 <br />