Siemens FDT421 Intelligent, Addressable Thermal (Heat) Fire Detector, Data Sheet

Fire Safety and Peripherals Heat Detector FDT421 Engineer Specifications Built in ISOtechnology Compatible with Siemens Model H devices on the same loop with Fire Safety Modular FireFinder FC FV20 fire alarm panels Contains seven 7 field selectable in a temperature range of 135 175 57.2 78.9 Provides a low temperature warning of 4.4 Field programmable as rate of rise or temperature Tri color detector status light emitting Utilizes advanced microprocessor based 10 seconds Each detector is self testing Polarity insensitive via SureWire Functions with Model DB 11 Compatible with Model DPU device LED with 360 view loop tester processing complete diagnostics performed bases Superior electromagnetic interference and radio frequency interference immunity compliant Approved Restriction of Hazardous Substances UL 521 Listed ULC Listed CSFM 7272 Product Overview Intelligent Thermal Heat Detector Model FDT421 provides an advanced method detection address programming supervision combined with sophisticated FACP Model FDT421 uses a state of the art thermistor microprocessor and signal analysis providing high reliability and accuracy Each Model FDT421 unit is UL listed including advanced built in a Class X SLC operation use is optional greatly system reliability and circuit while providing advanced fault finding model FDT421 is a cost effective two wire addressable thermal detector that a distinctive advanced feature seven 7 field selectable temperature settings tailored for application specific detection needs combined with Class X SLC built in avoiding additional installation and material cost temperature range settings for each Model FDT421 detector is between 135 175 79 with fixed and rate of rise programmability This variance the customer with maximum flexibility to program the temperature settings to multiple application needs and changing environmental conditions FDT421 can be configured to provide a low temperature warning signal at 4.4 This feature along with a compatible FACP Desigo Fire Safety FireFinder XLS V or with Desigo FC FV2025 or FC FV2050 FACPs serves prevention of water freezing in pipes for sprinkler systems meeting NFPA 72 Operation FDT421 also utilizes a modern accurate and shock resistant thermistor to significant changes in temperature Model FDT421 detector has seven 7 pre programmed parameter sets that can selected by the Siemens FACP Model FDT421 Heat Detector Data Sheet 6151 Infrastructure Building Products usa siemens com fire Thermistor Dust cover Thermal heat detector Each detector consists of a chamber a solid state internal sensor and electronics a low profile plastic housing Model FDT421 fire detector is with a protective dust cover FDT421 Supervision and Testing FDT421 contains a tri color LED indicator capable of flashing any one 1 of three 3 distinct colors GREEN RED During each flash interval the microprocessor based detector monitors the following fire system reaching programmed thresholds sensors and electronics are functional Based on the results of the monitoring the LED indicator flashes the following COLOR INTERVAL seconds has not reached programmed supervisory operation FLASH thresholds or set points is not operating at capacity and needs replacement condition is not powered denotes LED can be turned OFF follow the corresponding description of the panel used quick visual inspection is sufficient to indicate the condition of the detector at any time more detailed information is required a printed report can be provided from the respective Desigo Fire Safety Modular FireFinder XLS V or Model FC20 series FACPs that indicates the status and settings assigned to each individual detector Installation Model FDT421 detectors use a surface mounting base Model DB 11 or Model DB 11E which mounts on a 4 inch cm octagonal square or single gang electrical box The base utilizes screw clamp contacts for electrical and self wiping contacts for increased reliability Model DB 11 detector base can be used with the optional Siemens Model LK 11 detector locking kit which contains detector locks and an installation tool to prevent unauthorized removal of the detector head Model DB 11 has conducive plugs to cover the outer mounting screw holes FDT421 may be installed on the same initiating circuit with the Siemens Model H detectors and devices used with Desigo Fire Safety Modular Model FC20 series FireFinder XLS V FACPs HFP 11 HFPT 11 Model XTRI series interfaces Model XMS series manual stations Model HTRI series interfaces Model HMS series manual stations Model output control modules Model HZM series of addressable conventional zone modules Infrastructure Building Products Data of Model FDT421 intelligent addressable thermal detector requires a two wire SLC circuit In many retrofit existing wiring may be used T tapping is permitted only for Style 4 Class B wiring Model FDT421 is polarity when not used in Class X mode which can reduce installation and debugging times The unit value is with built in ISOtechnology the True Class X NFPA 72 compliant SLC isolation feature supporting up to 252 ready devices per loop When used in mixed mode a maximum of 30 non isolated devices between isolation wired in polarity insensitive mode Each detector fits into one 1 wall or ceiling footprint and only occupies 1 address on the signal line circuit SLC FDT421 can be applied within the maximum 50 feet 15.24 m center spacing 2,500 sq ft 232.3 sq m per Laboratories This application guide is based on ideal conditions specifically smooth ceiling surfaces air movement and no physical obstructions between potential fire sources and the actual detector Do not detectors in close proximity to heating ventilation air conditioning HVAC outlets Exposed joists or beamed may also affect safe spacing limitations for detectors questions arise regarding detector placement observe NFPA 72 guidelines Good fire protection system and common sense dictate how and when fire detectors are installed and used Contact your local Fire Safety distributor or sales office whenever you need assistance applying Model FDT421 in unusual sure to follow NFPA guidelines and UL Listed ULC Listed installation instructions included with every Siemens Fire detector and local codes for all fire protection equipment FDT421 is a plug in 2 two wire thermal heat detector compatible with Desigo Modular FireFinder XLS V Model FC20 series FACPs Each Model FDT421 detector has microcomputer chip technology and highly stable