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GENERAL System Sensor DH400ACDC samples air currents through a duct. It gives dependable performance management of fans, blowers and air conditioning sys- preventing the spread of toxic smoke and fire gases the protected area. Sensor(cid:146)s DH400ACDC 4-wire duct detector hous- will accommodate either the 1451DH ionization sensor the 2451 photoelectric sensor. The twist-in, twist-out heads allow easy removal for quick cleaning and or a change in application without removing duct housing. The System Sensor DH400ACDC Duct Detector is supplied with either the 1451DH Sensor (order or the 2451 Photoelectric Sensor (order 24 VDC operation. Accommodates ionization or photoelectric heads. Simple change-out of detector heads: twist in, twist out. Easy to maintain. Powered outputs for remote LED and Sounder/Strobe. Air velocity rating from 500 to 4,000 feet per minute (3.175 25.4 m./sec.). UL 268A listed. Reset time: 0.3 seconds (maximum). Clear polycarbonate cover for convenient visual inspec- of sampling tube filters. Rugged plastic housing (mounting portion). Remote test station option. Easy and quick mounting to round or rectangular ducts 1 to 12 (0.305 to 3.66 m) wide. Three-year limited warranty. detectors are designed to operate on 24 VDC, VAC, 120 VAC, or 240 VAC. Alarm and supervisory contacts are available for control panel interface initiation), HVAC control, and other auxiliary func- These detectors are NOT designed for 2-wire appli- detectors are: NOT a substitute for open area smoke detectors. NOT a substitute for early warning detection. NOT a replacement for a building(cid:146)s regular fire detection to NFPA 90A for additional duct detector application 18, 1998 Series Duct Detector Housings for and Photoelectric Sensors Conventional Initiating Devices Fire Duct Detector Housing 2451 Photoelectric Sensor AND INSTALLATION twist-in, twist-out detector and base allow the removal detectors easily and quickly for cleaning and mainte- In addition, detector heads can be changed to fit application without removing the duct housing. The comes with built-in exhaust tube. Sampling are available to fit ducts from 1 to 12 feet (0.305 to meters) wide. LIMITS 32(cid:176)F to 120(cid:176)F (0(cid:176)C to 49(cid:176)C). NOT INSTALL where normal ambient temperatures 120(cid:176)F (50(cid:176)C). humidity: 10% to 93%. velocity: 500 to 4,000 ft./min. (3.175 to 25.4 m./sec.). SPECIFICATIONS 14.5 inches (36.83 cm). 5 inches (12.70 cm). (installed): 4 inches (10.16 cm). 4.5 pounds (2.041 kg). document is not intended to be used for installation purposes. We try to keep our information up-to-date and accurate. We cannot cover all specific applications or all requirements. All specifications are subject to change without notice. For information, contact Fire(cid:149)Lite. Phone: (203) 484-7161 FAX: (203) 484-7118 Clintonville Road, Northford, Connecticut 06472 and Manufacturing System Certified to Standard ISO-9001 in the U.S.A. (cid:151) Page 1 of 2 i
GENERAL System Sensor DH400ACDC samples air currents through a duct. It gives dependable performance management of fans, blowers and air conditioning sys- preventing the spread of toxic smoke and fire gases the protected area. Sensor(cid:146)s DH400ACDC 4-wire duct detector hous- will accommodate either the 1451DH ionization sensor the 2451 photoelectric sensor. The twist-in, twist-out heads allow easy removal for quick cleaning and or a change in application without removing duct housing. The System Sensor DH400ACDC Duct Detector is supplied with either the 1451DH Sensor (order or the 2451 Photoelectric Sensor (order 24 VDC operation. Accommodates ionization or photoelectric heads. Simple change-out of detector heads: twist in, twist out. Easy to maintain. Powered outputs for remote LED and Sounder/Strobe. Air velocity rating from 500 to 4,000 feet per minute (3.175 25.4 m./sec.). UL 268A listed. Reset time: 0.3 seconds (maximum). Clear polycarbonate cover for convenient visual inspec- of sampling tube filters. Rugged plastic housing (mounting portion). Remote test station option. Easy and quick mounting to round or rectangular ducts 1 to 12 (0.305 to 3.66 m) wide. Three-year limited warranty. detectors are designed to operate on 24 VDC, VAC, 120 VAC, or 240 VAC. Alarm and supervisory contacts are available for control panel interface initiation), HVAC control, and other auxiliary func- These detectors are NOT designed for 2-wire appli- detectors are: NOT a substitute for open area smoke detectors. NOT a substitute for early warning detection. NOT a replacement for a building(cid:146)s regular fire detection to NFPA 90A for additional duct detector application 18, 1998 Series Duct Detector Housings for and Photoelectric Sensors Conventional Initiating Devices Fire Duct Detector Housing 2451 Photoelectric Sensor AND INSTALLATION twist-in, twist-out detector and base allow the removal detectors easily and quickly for cleaning and mainte- In addition, detector heads can be changed to fit application without removing the duct housing. The comes with built-in exhaust tube. Sampling are available to fit ducts from 1 to 12 feet (0.305 to meters) wide. LIMITS 32(cid:176)F to 120(cid:176)F (0(cid:176)C to 49(cid:176)C). NOT INSTALL where normal ambient temperatures 120(cid:176)F (50(cid:176)C). humidity: 10% to 93%. velocity: 500 to 4,000 ft./min. (3.175 to 25.4 m./sec.). SPECIFICATIONS 14.5 inches (36.83 cm). 5 inches (12.70 cm). (installed): 4 inches (10.16 cm). 4.5 pounds (2.041 kg). document is not intended to be used for installation purposes. We try to keep our information up-to-date and accurate. We cannot cover all specific applications or all requirements. All specifications are subject to change without notice. For information, contact Fire(cid:149)Lite. Phone: (203) 484-7161 FAX: (203) 484-7118 Clintonville Road, Northford, Connecticut 06472 and Manufacturing System Certified to Standard ISO-9001 in the U.S.A. (cid:151) Page 1 of 2 i