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Operation — (continued) <br /> • Smoke sensitivity is within the range Model OP921 can be applied within the maximum 30-feet <br /> indicated on the nameplate label center spacing (900 sq.ft.areas),as referenced in NFPA 72. <br /> • Smoke in its sensing chamber This application guideline is based on ideal conditions— <br /> • Internal sensors and electronics are functional specifically,smooth ceiling surfaces, minimal air <br /> Based on the monitoring results, the LED indicator movement,and no physical obstructions between potential <br /> flashes the following colors based on the following fire sources and the actual detector. Do not mount <br /> conditions: detectors in close proximity to ventilation or heating and air <br /> Flash conditioning outlets. Exposed joints or beamed ceilings <br /> Flash Condition Interval may also affect safe spacing limitations for detectors. <br /> Color <br /> (in seconds) Should questions arise regarding detector placement, <br /> Normal supervisory operation. observe NFPA 72 guidelines. Good fire-protection system <br /> Green*: Smoke sensitivity is within rated 10 engineering and common sense dictate how and when <br /> limits. fire detectors are installed and used. Contact your local <br /> Detector is in trouble and needs 4 Siemens Industry—Fire Safety distributor or sales office <br /> Yellow: replacement. whenever you need assistance applying Model OP921 in <br /> Red: Alarm condition. 1 unusual applications. Be sure to follow NFPA guidelines <br /> and®UL Listed 1©ULC Pending installation instructions— <br /> No Flash: Detector is not powered. -- included with every Siemens—Fire Safety detector—and <br /> * LED can be turned OFF. local codes as for all fire-protection equipment. <br /> Please follow the corresponding description of the panel used. <br /> A quick,visual inspection is sufficient to indicate the condition of Technical Data <br /> the detector at any time. If more detailed information is required, Operating <br /> a printed report can be provided from the Model FC9-series FACPs Temperature +32°F (0°C) to 120°F (49°C) <br /> indicating the status and settings assigned to each individual Range: <br /> detector. <br /> Installation Relative Humidity: 0—95%; non-condensing <br /> All Model OP921 detectors use a surface-mounting base,Model Air Pressure: No effect <br /> DB-11 or Model DB-11 E,which mounts on a 4-inch octagonal, Air Velocity: 0—4,000 ft. I min (0-20m I sec) <br /> square or single-gang electrical box. The base utilizes screw-clamp <br /> contacts for electrical connections and self-wiping contacts for Input Voltage Range: 16VDC—30VDC <br /> increased reliability. <br /> The Model DB-11 base can be used with the optional Model LK 11 Alarm Current (max.): 410pA <br /> detector locking kit,which contains 50 detector locks and an <br /> installation tool to prevent unauthorized removal of the detector Standby Current(max.): 250pA, max. (average) <br /> head. Model DB-11 has decorative plugs to cover the outer- Maximum Spacing: 30-foot centers (900 sq. ft.), <br /> mounting screw holes. per NFPA 72 <br /> Model 0 P9 21 may be installed on the same initiating circuit <br /> with the Siemens Model'H'-series detectors[when used with Detector Weight: <br /> the Model FC9-series of FACPs]— 0.31 I bs. <br /> • Model HFP-11 (0.144 kg.) <br /> • Model'HMS'-series manual stations Mechanical Protection Guard: <br /> • Model'HTRI'-series interfaces <br /> • Model HCP output-control devices ®UL Listed I`ULC Pending <br /> • Model'HZM'-series of addressable, with STI Guard Model STI-9604 <br /> conventional zone modules <br /> Application Data <br /> Installation of Model OP921 detectors requires a two-wire <br /> circuit. In many retrofit cases,existing wiring may be used. <br /> 7-tapping'is permitted only for Style 4(Class B)wiring. <br /> Model OP921 is polarity insensitive,which can greatly reduce <br /> installation and debugging time. <br /> SIEMENS Industry, Inc. CerberusTM PRO <br /> Building Technologies Division <br />