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SIEMENS <br /> DetectorsDesigo@ Fire Safety <br /> • Peripherals <br /> DetectorThermal (Heat) <br /> Model <br /> •• • <br /> ❑ Built-in ISOtechnologyTM The Intelligent Thermal (Heat) Detector(Model FDT421) provides an advanced method <br /> of detection, address programming supervision - combined with sophisticated FACP <br /> series devices on the same loop(with <br /> ❑ Compatible with Siemens Model ' communication. Model FDT421 uses a state-of-the-art thermistor, microprocessor and <br /> t <br /> Desigo Fire Safety Modular I FireFinder advanced signal analysis, providing high reliability and accuracy. <br /> XLS/V I FC/FV20-series fire-alarm Additionally, Each Model FDT421 unit is UL listed including advanced built-in <br /> control panels <br /> ISOtechnologyTm - a "True Class-X" SLC operation (use is optional) greatly <br /> ❑ Contains seven(7)field-selectable improving system reliability and circuit integrity while providing advanced <br /> settings in a temperature range of 135°F addressable fault finding. <br /> -175°F(57.2°C-78.9°C) <br /> Each model FDT421 is a cost-effective, two-wire / addressable thermal detector that <br /> ❑ Provides a low-temperature warning of provides a distinctive, advanced feature: seven (7) field-selectable temperature <br /> 40OF(4.4°C) settings specially tailored for application-specific detection needs combined with Class- <br /> ❑ Field programmable as rate-of-rise or X SLC operation built-in avoiding additional installation and material cost. <br /> fixed temperature <br /> The temperature-range settings for each Model FDT421 detector is between 135°F <br /> ❑ Tri-color detector-status light-emitting (57°C) - 175°F (79°C) with fixed and rate-of-rise programmability. This variance <br /> diode(LED)with 360'view provides the customer with maximum flexibility to program the temperature settings to <br /> ❑ Compatible with Model DPU(device suit multiple application needs and changing environmental conditions. <br /> programmer/loop tester) <br /> Model FDT421 can be configured to provide a low-temperature warning signal at <br /> ❑ Utilizes advanced,microprocessor-based 40°F (4.4°C). This feature - along with a compatible FACP (Desigo Fire Safety <br /> signal processing Modular I FireFinder XLS/V or with Desigo FC/FV2025 or FC/FV2050 FACPs)-serves <br /> ❑ Each detector is self-testing: as prevention of water freezing in pipes for sprinkler systems, meeting NFPA 72. <br /> - complete diagnostics performed Operation <br /> every 10 seconds <br /> ❑ Polarity insensitive via SurewireTm Model FDT421 also utilizes a modern, accurate and shock-resistant thermistor to <br /> technology sense significant changes in temperature. <br /> ❑ Functions with Model DB-11-series Each Model FDT421 detector has seven (7) pre-programmed parameter sets that can <br /> mounting bases be selected by the Siemens FRCP. <br /> ❑ Superior electromagnetic interference <br /> (EMI)and radio-frequency interference j <br /> (RFI)immunity <br /> ❑ Restriction of Hazardous Substances <br /> (RoHS compliant) ;id - r <br /> ❑ UL 521 Listed,ULC Listed; CSFM(#7272- t <br /> 0067:0258)Approved <br /> Thermal(Heat)Detector <br /> Siemens Data Sheet 6151 <br /> Smart Infrastructure- Building Products usa.siemens.com/fire <br />