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| C o n v e n t i o n a l D e t e C t i o n 4451HT Plug-in 190F Thermal Detector Model 4451HT 4451HTA Product Overview Dual solid-state thermistor sensing 190F (88C) fixed temperature response Sealed against back pressure Low standby current Built-in tamper-resistant feature Flame retardant Noryl plastic 360 field viewing angle of the visual alarm LEDs Easy plug-in of the head to base SEMS screws for easy wiring UL listed for 50 ft. spacing 3-year warranty The 4451HT fixed intermediate temperature thermal detector is designed to meet the stringent performance requirements of industrial and municipal fire detection/ alarm systems. The 4451HT thermal detector contains a unique dual thermistor sensing circuit to provide both maximum performance and solid state reliability. An RA400Z remote LED annunciator is available as an optional accessory. S2101 7270-1209:105 3011446 326-94-E Specifications Operating Voltage Mounting base dependent (see char t below) Standby Current 100 microamps Weight 5 ounces (150 g) Dimensions Diameter: 4.1 inches (104 mm) Height: 2.1 inches (53 mm) Construction Flame retardant nor yl plastic Operating Temperature 32 to 150F (0 to 66C) Humidity Range 10% to 93% RH noncondensing Alarm Point 190F (88 C) Wiring 12 to 18 gauge, twisted pair recommended Smoke Detector Spacing For detectors on smooth ceilings (as defined in NFPA 72), spacing of 50 feet (2500 sq. ft.) may be used. Other spacing may be used depending on ceiling height, high air movements, and other conditions or response requirements. Nominal Voltage 24 VDC 24 VDC 24 VDC 120 VAC 24 VDC 24 VDC 24 VDC Current Draw on Alarm (mA) 10-100** 22-62 14-39 75 mA AC Max. 12-100** 10-100** 18-62 Mounting Base Selection Guide Base Model No. B401B B401BR B402B B404B B406B B401 B401R Loop Type 2-wire* 2-wire* 4-wire 4-wire 2-wire* 2-wire* 2-wire* Current Limit Resistor No Yes Yes Yes No No Yes Alarm Contact Type -- -- Form A & C Form A & C - Supy. Form C -- -- *Functionality contingent on panel compatibility. **Must be limited by control panel. Flangeless base Although B401B and B401 bases are capable of 12/24 VDC operation, they cannot be used with the 4451HT in 12V applications. Relay Contact Ratings: Resistive or Inductive (60% power factor) load. Form A: 2.0A at 30VAC/DC Form C: 0.6A at 110VDC, 2.0A at 30VDC 1.0A at 125VAC, 2.0A at 30VAC Wiring Guide (-) (-) OPTIONAL RA400Z (+) (-) OPTIONAL RED (+) PURPLE (-) 2 (-) 3 RA400Z (-) 2 (-) 3 EOL RESISTOR (-) RA400Z (OPTIONAL) RA400Z (OPTIONAL) (-) (+) 1 4 (+) 1 4 (+) (+) 5 1 10 89 (+) (-) (+) (+) 14 13 12 11 5 1 10 89 COM N.C. N.O. (+) AUXILIARY CONTACTS 14 13 12 11 COM N.C. N.O. AUXILIARY CONTACTS OPTIONAL FAULT TOLERANT WIRING ALARM CIRCUIT B401B Wiring Diagram (+) 120 VAC 120 VAC B402B Wiring Diagram (-) 3 RA400Z (OPTIONAL) 2 4 (-) 3 RA400Z (OPTIONAL) 2 4 EOL RESISTOR 1 (+) 5 6 7 10 89 14 13 12 11 COM N.C. N.O. 1 (+) AUXILIARY FORM C CONTACTS 5 6 7 10 89 14 13 12 11 COM N.C. N.O. AUXILIARY FORM C CONTACTS 2 3 5 1 4 2 3 5 1 4 14 13 12 COM N.C. N.O. AUXILIARY CONTACTS 14 13 12 COM N.C. N.O. AUXILIARY CONTACTS SUPERVISION CIRCUIT EOL RESISTOR (-) ALARM CONTROL PANEL ALARM CIRCUIT OPTIONAL NFPA CLASS "A" WIRING B404B Wiring Diagram B406B Wiring Diagram Ordering Information Part No. 4451HT Description Fixed temperature thermal detector with alarm point at 190F (88C). Must be mounted to one of the B40X Series bases listed above (order separately). Part No. 4451HTA RA400Z Description Same as above, Canadian model Remote Annunciator for 2- or 4-wire systems, 3-32V. Use with most 400 Series plug-in detector bases. Fits standard U.S. single gang electrical box. Surface Mounting Kit. Provides for entry of surface wiring conduit. Use with B401 or B401R mounting bases only. SMK400 System Sensor Sales and Service System Sensor Headquarters 3825 Ohio Avenue St. Charles, IL 60174 Ph: 800/SENSOR2 Fx: 630/377-6495 www.systemsensor.com System Sensor Canada Ph: 905.812.0767 Fx: 905.812.0771 System Sensor Europe Ph: 44.1403.276500 Fx: 44.1403.276501 System Sensor in China Ph: 86.29.8832.0119 Fx: 86.29.8832.5110 System Sensor in Singapore Ph: 65.273.2230 Fx: 65.273.2610 System Sensor - Far East Ph: 85.22.191.9003 Fx: 85.22.736.6580 System Sensor - Australia Ph: 613.54.281.142 Fx: 613.54.281.172 System Sensor - India Ph: 91.124.637.1770 x.2700 Fx: 91.124.637.3118 System Sensor - Russia Ph: 70.95.937.7982 Fx: 70.95.937.7983 A05-0236-004*6/04*#883 (c) 2004 System Sensor. The company reserves the right to change product specifications without notice. PURPLE 2 2 BLK EOL RESISTOR 3 4 3 4 (-) EOL POWER SUPERVISION RELAY, A77-716B BL AC K BL BL AC BL AC AC K K K |
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