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1. Thermistor <br /> NOTE:Each detector consists of a dust- <br /> - resistant chamber,a solid state, <br /> functional internal sensor,and r <br /> microprocessor-based electronics with <br /> a low-profile plastic housing. <br /> Thermal(Heat)Detector <br /> Detector Supervisionand Testing <br /> Model HI921 contains a tri-color LED indicator, capable of flashing any one (1) of three (3) distinct colors: GREEN <br /> YELLOW I RED. During each flash interval, the microprocessor-based detector monitors the following fire-system <br /> conditions: <br /> • Temperatures reaching programmed thresholds <br /> • Internal sensors and electronics are functional <br /> Based on the results of the monitoring, the LED indicator flashes the following: <br /> FLASH COLOR CONDITION FLASH INTERVAL <br /> [in seconds] <br /> Normal supervisory operation. <br /> GREEN*: Temperature has not reached programmed 10 <br /> alarm thresholds or set points. <br /> YELLOW: Detector is not operating at 4 <br /> normal capacity and needs replacement. <br /> Alarm'condition 1 <br /> NO FLASH: Detector is not powered. — <br /> *denotes LED can be turned OFF <br /> Please follow the corresponding description of the panel used. <br /> A quick visual inspection is sufficient to indicate the condition of the detector at any time. <br /> If more detailed information is required, a printed report can be provided from the respective Cerberus PRO Modular <br /> FireFinder XLSIV or Model FC9-series FACPs that indicates the status and settings assigned to each detector. <br /> Installation <br /> All Model HI921 detectors use a surface-mounting base, Model DB2-HR I DB-11 or Model DB-11 E, which mounts on a <br /> 4-inch (10.2 cm.) octagonal, square or single-gang electrical box. The base utilizes screw-clamp contacts for electrical <br /> connections and self-wiping contacts for increased reliability. <br /> The Model DB-1 1 detector base can be used with the optional Siemens Model LK-11 detector locking kit, which contains <br /> 50 detector locks and an installation tool to prevent unauthorized removal of the detector head. Model DB-11 has <br /> aesthetically conducive plugs to cover the outer mounting-screw holes. <br /> Mode[ HI921 may be installed on the same initiating circuit with the Siemens Model 'H'-series detectors and <br /> devices [when used with Cerberus PRO Modular I Model FC9-series I FireFinder XLSIV FACPs] — <br /> • HFP-11, HFPT-11 <br /> • Model 'XTRI'-series interfaces <br /> • Model 'XMS'-series manual stations <br /> • Model 'HTRI'-series interfaces <br /> • Model 'HMS'-series manual stations <br /> • Model HCP output-control detection devices <br /> • Model'HZM'-series of addressable, conventional zone modules <br /> Siemens <br /> usa.siemens.comlfire <br /> Smart Infrastructure - Building Products —2— <br />