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Installation All Model FDOT421 detectors use a surface-mounting Model FDOT421 fire detectors can be applied within base, Model DB-11 or Model DB-11 E, which mounts the maximum 30-feet center spacing(900 sq.ft. on a 4-inch octagonal, square or single gang areas,)as referenced in NFPA 72. This application electrical box. The base utilizes screw-clamp contacts guideline is based on ideal conditions,specifically, for electrical connections and self-wiping contacts for smooth ceiling surfaces, minimal air movement,and increased reliability. no physical obstructions between potential fire The Model DB-11 base can be used with the optional sources and the actual detector. Do not mount Model LK-11 detector locking kit,which contains 50 detectors in close proximity to ventilation or heating detector locks and an installation tool to prevent and air conditioning outlets. Exposed joints or unauthorized removal of the detector head. Model beamed ceilings may also affect safe spacing DB-11 has decorative plugs to cover the outer limitations for detectors. mounting screw holes. Should questions arise regarding detector placement, Model FDOT421 may be installed on the same observe NFPA 72 guidelines. Good fire-protection initiating circuit with the Siemens Model'H'-series system engineering and common sense dictate how detectors (Models HFP-11 and HFPT-11); Model and when fire detectors are installed and used. 'HMS'-series manual stations; Model'HTRI'-series Contactyour local Siemens Industry—Fire Safety interfaces; Model HCP output-control devices, or distributor or sales office whenever you need Model'HZM'-series of addressable, conventional assistance applying Model FDOT421 in unusual zone modules for FireFinder XLS control panels. applications. Be sure to follow NFPA guidelines and �UL Listed 1�ULC Pending installation instructions— All Model FDOT421 detectors are approved for included with every Siemens—Fire Safety detector— operation within the�UL-specified temperature and local codes as for all fire protection equipment. range of 32 to 100°F(0 to 38°C). Model DPU Technical Data The Device Program 1 Test Unit accessory is used to Operating program and verify the address of the detector. The Temperatures: +32°F (0°C) to 100°F (38°C) technician selects the accessory's program mode, Relative Humidity: 0-95°�; non-condensing and enters the desired address. Model DPU automatically sets and verifies the address and tests Air Velocity: 0-4,000 ft. 1 min (0-20m I sec) the detector. Model DPU operates on AC power or rechargeable Air Pressure: No effect batteries, providing flexibility and convenience in Maximum Spacing: 30-foot centers (900 sq. ft.), programmer and testing equipment from practically per NFPA 72 and�l.1LC-5524 any location. pending When in the test mode, Model DPU will perform a Input Voltage Range: 16VDC— 30VDC series of diagnostic tests without altering the address or other stored data,allowing technicians to Alarm Current: 410uA, max. determine if the detector is operating properly. Standby Current: 250uA, max. Application Data (average> Installation of the Model FDOT421 series of fire Detector Sensitivity Range: aUL: 1.10°�to 2.62%1 ft. detectors requires a two-wire circuit. In many retrofit �ULC: 1.44 to 3.06�01 ft. cases,existing wiring may be used. T-tapping'is Pending permitted only for Style 4(Class B)wiring. Model FDOT421 is polarity insensitive,which can greatly Thermal Rating: reduce installation and debugging time. • Fixed-temperature set point: 135°F(57°C) ■ Rate-of-Rise Detection: 15°F/min. (8.3°C/min) Detector Weight: 0.317 Ibs. (0.144 kg.) Mechanical Protection Guard: 4UL Listed I�ULC Pending with STI Guard Model STI-9604 SIEMENS Industry, Inc. Building Technologies Division