LIFECO

Dubai, United Arab Emirates

• Choice of fixed temperature/rate-of-rise 135F or 190F heat detector
• UL Listed spacing up to 60 by 60
• 2 or 4 wire base compatibility, relay bases available
• Highly stable operation, RF/Transient protection
• Low standby current, 35A nominal
• Two built-in power/alarm LEDs for 360 viewing
• Fully electronic operation
• Power/alarm LEDs confirm detector status

The LE-DCD-135/-190 fixed temperature/rate-of-rise heat detectors are suited to detect in the presence of slow or fast rising temperatures due to burning combustibles. The construction of these models incorporate a thermistor heat element protected from damage by the built-in, durable plastic guard. These electronic heat detectors incorporate two power/alarm LEDs for 360 indication of status. In standby condition the power LEDs flash Green. In an alarm condition the LEDs latch on Red. The LE-DCD-135/-190 electronic heat detection circuitry performs the same function as a Mechanical Device but with Electronic Precision. If the heat rise is less than 12/minute the LE-DCD will not alarm until it reaches its alarm temperature (135 or 190 7.5F). If the heat rise is greater than 12/minute the DCD will alarm immediately giving an early warning signal and latchingthe Red alarm LEDs on.

• Low profile only 2.00 high, including base
• Simple and reliable device addressing
• Automatic compensation for sensor contamination
• Built-in fire test feature
• Uses the noise-immune Digital Communication Protocol (DCP), which utilizes interrupts for fast response to fires
• Two built-in power/alarm LEDs
• Programmable non-polling LEDs
• Non-directional smoke chamber
• Vandal resistant security locking feature
• Removable smoke labyrinth for cleaning or replacement

The LIFECO LE-ALN-V Photoelectric Smoke Sensor is particularly suited to detecting optically dense smoke typical of fires involving materials such as soft furnishings, plastic, foam or other similar materials which tend to smoulder and produce large visible smoke particles. LIFECOs unique design allows fast response to flaming fires as well as smoldering fires while eliminating false alarms.

Features

• Detects and limits the spread of smoke throughout building HVAC ducts
• Ability to interconnect (all relays operate with a single alarm) up to 30 units using the same independent power supply
• Compatible with building automation and fire alarm systems
• Installs quickly and easily
• Interchangeable Plug-In photoelectric or ionization heads
• No screens or filters to clean
• Cover provides magnet window and placement guide for operational testing without disassembly
• Rugged gray steel back box with clear cover
• Accessories Remote power, remote alarm indication capability and remote, horn/piezo capability
• Meets UL 268A Requirements

Description

The LIFECO LE-DH-98 Duct Smoke Detector provides early detection of smoke and products of combustion present in air moving through HVAC ducts in Commercial, Industrial and Residential applications. The LE-DH-98 is designed to prevent the recirculation of smoke in areas by the air handling systems, fans and blowers. Complete systems may be shut down in the event of smoke detection. The LIFECO LE-DH-98-I and the LE-DH-98-P operate on 115 VAC, 24 VAC and 24 VDC respectively and the LE-DH-98 operate on 230 VAC, 24 VAC and 24 VDC.

The LE-DH-98 is designed and built to meet all local requirements, as well as the NFPA regulations regarding duct smoke detectors. Output terminals are provided for remote accessories such as a horn, strobe, remote status indicators and reset key switches or push buttons

• Microprocessor based for reliability
• Simple setup & alignment with signal strength LEDs
• Provides 60 feet on center linear protection at a range of 32.8 feet to 328 feet
• Automatic compensation for signal drift or dirty lens
• Three field adjustable sensitivity settings
• Form A alarm and Form B trouble contacts
• Calibrated filters available to verify sensitivity
• Color-coded emitter and receiver labels for easy recognition
• Adjustable to one of the three obscuration settings of 25%, 50% or 70% per span
• Voltage and RF transient protection
• External red LED when alarm condition is indicated.

The LIFECO LE-SPC-24 Projected Beam Smoke Detector consists of an emitter and receiver. The projected beam smoke detector should be placed so that smoke generated by a fire will likely rise into the path of the beam. The receiver is constantly monitoring and measuring the intensity of the beam transmitted by the emitter. Should the smoke from a fire cause a decrease in the signal strength of a magnitude that exceeds the programmed obscuration setting, an alarm signal is generated. The LE-SPC-24 Projected Beam Smoke Detector can provide vital fire detection in applications where other types of detectors may not be able to respond quickly, or at all, to a fire condition

• Microprocessor based design
• High accuracy of fire detection
• Quick fire alarm transfer speed
• Special chamber design
• Polarized wiring
• Provision for remote LED Indicator
• Ease of maintenance

The LF-PE-4211 Conventional type Photoelectric Smoke Detector uses a specialized smoke chamber design, which could sense the presence of smoke particles produced by fast combustion or slow smoldering fire. Combining fire algorithms stored on its memory with the special three part design of the smoke chamber and given the photo-sensors viewing angle, the detector can effectively sense both white smoke and black smoke with virtually no false alarm.