Siemens HI921 Intelligent, Addressable Thermal (Heat) Detector, Data Sheet

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Cerberus PRO and Peripherals Heat Detector HI921 Engineer Specifications Built in ISOtechnology Compatible with Siemens Model H devices on the same loop with PRO Modular FireFinder FC9 fire alarm control Contains seven 7 field selectable in a temperature range of 175 57.2 78.9 Provides a low temperature warning 40 4.4 Field programmable as rate of rise fixed temperature Tri color detector status light emitting LED with 360 view Compatible with Model 8720 DPU programmer loop tester Utilizes advanced microprocessor signal processing Each detector is self testing complete diagnostics every 10 seconds Polarity insensitive via technology Functions with Model DB mounting bases Superior electromagnetic interference and radio frequency interference immunity Restriction of Hazardous RoHS compliant UL 521 Listed ULC Listed CSFM 7272 Approved Product Overview Intelligent Thermal Heat Detector Model HI921 provides an advanced method of address programming supervision combined with sophisticated FACP Model HI921 uses a state of the art thermistor microprocessor and signal analysis providing high reliability and accuracy Each Model HI921 unit advanced built in a Class X SLC operation use is optional greatly improving reliability and circuit integrity while providing advanced addressable fault UL model HI921 is a cost effective intelligent addressable thermal detector that distinctive advanced features 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 HI921 detector is between 135 57 79 with fixed and rate of rise programmability This variance provides the with maximum flexibility to program the temperature settings to suit multiple needs and changing environmental conditions HI921 can be configured to provide a low temperature warning signal at 40 This feature along with a compatible FACP Cerberus PRO Modular FireFinder or with Cerberus PRO FC FV922 or FC FV924 FACPs serves as prevention of freezing in pipes for sprinkler systems meeting NFPA 72 Operation HI921 also utilizes a modern accurate and shock resistant thermistor to sense changes in temperature Model HI921 detector has seven 7 pre programmed parameter sets that can be by the Siemens FACP HI921 Heat Detector Infrastructure Building Products Data Sheet 9901 usa siemens com fire Thermistor HI921 Dust cover Thermal heat detector Each detector consists of a dust chamber a solid state electronics with a plastic housing Model HI921 fire detector is with a protective dust cover Detector Supervision and Testing HI921 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 on the results of the monitoring the LED indicator flashes the following COLOR INTERVAL seconds has not reached programmed supervisory operation thresholds or set points is not operating at capacity and needs replacement condition FLASH 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 Cerberus PRO Modular FireFinder XLS V or Model FC9 series FACPs that indicates the status and settings assigned to each detector Installation Model HI921 detectors use a surface mounting base Model DB2 HR DB 11 or Model DB 11E which mounts on a 10.2 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 HI921 may be installed on the same initiating circuit with the Siemens Model H detectors and when used with Cerberus PRO Modular Model FC9 series FireFinder XLS V FACPs HFP 11 HFPT 11 Model XTRI interfaces Model XMS manual stations Model HTRI interfaces Model HMS manual stations Model HCP output control detection devices Model HZM of addressable conventional zone modules Infrastructure Building Products usa siemens com fire Application Data of Model HI921 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 HI921 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 HI921 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 HI921 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 Specifications HI921 is a plug in 2 two wire thermal heat detector compatible with Cerberus PRO Modular FireFinder and Model FC9 series FACPs Each Model HI921 detector has microcomputer

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