2D51

INSTALLATION AND MAINTENANCE INSTRUCTIONS I56-3140-003R 2D51 Photoelectric Smoke Detector for use with InnovairFlex 4-Wire Duct Smoke Detector Housings or Pendant Mount Applications Specifications Height: Diameter: Weight: Operating Temperature Range: Operating Humidity Range: 2.0 in 4.1 in; 6.1 in 3.1 oz. (88 g) –20°C to 70°C (–4°F to 158°F) 0% to 95% Relative Humidity Non-condensing 3825 Ohio Avenue, St. Charles, Illinois 60174 1-800-SENSOR2, FAX: 630-377-6495 www.systemsensor.com Before Installing Please thoroughly read the System Sensor manual A05-1003, Applications Guide for System Smoke Detectors, which provides detailed information on detector spacing, placement, zoning, wiring, and special applications. Copies of this manual are available from System Sensor. NOTICE: This manual should be left with the owner/user of this equipment. IMPORTANT: The detector must be tested and maintained regularly following NFPA 72 requirements. The detector should be cleaned at least once a year. General Description The 2D51 photoelectronic detector uses a state-of-the-art optical sensing chamber. This detector is designed to provide protection in duct applications when installed with an Innovair Flex 4-wire duct smoke detector housing and to be used with compatible UL listed control panels only. The 2D51 can also be used in pendant mount applications when installed with a B210LP or B501 base and D4P120 power board components. Two LEDs on each detector provide local visible alarm ind...