H V A C S y s t e m s M o n i t o r i n g 400 Series™ High-Temperature Duct Smoke Detector Models Available DH400ACDCIHT 4-wire ionization high-temperature duct smoke detector Product Overview System Sensor DH400ACDCIHT is designed for interior or exterior duct applications where extreme temperatures can exceed standard detector capabilities. (For exterior applications use DH400 OE-1 outdoor enclosure.) The DH400ACDCIHT samples air currents passing through a duct to provide dependable performance for management of fans, blowers, and air conditioning systems. The twist-in, twist-out 1451DHHT High-Temperature ionization detector head allows easy removal for quick cleaning, maintenance, and replacement without removing the duct housing. Temperature range 32° – 158°F (0° – 70°C) Agency Listings Air velocity rating from 500 – 4,000 FPM DH400ACDCIHT APA451 RTS451KEY RTS451 RA400Z PA400W 24 VAC/DC or 120/220 VAC operation Easy and quick mounting to round or rectangular ducts from 1′ – 12′ (0.3 – 3.7 meters) wide UL UL UL UL UL UL S911 S4011 S2522 S2522 S2522 S3593 3-year warranty Accessories System Sensor provides system flexibility with a variety of accessories, including two remote test stations, and several different means of visible and audible system annunciation. ALARM ALARM POWER RESET ON TEST As with our duct detectors, all duct detector accessories are UL listed. F I R E ALARM RESET APA451 RTS451KEY PA400W with RTS451 Piezo Remote Test PS24LOW Add-on Strobe Remote Test Remote Annunciator Station with Key Station Annunciator RA400Z Architect/Engineer Specifications The air duct smoke detector shall be a System Sensor Model DH400ACDCIHT Series Duct Smoke Detector. The detector shall be UL listed per UL S911, standard for Smoke Detectors for Duct Applications, specifically for use in air handling systems. The detector shall operate at air velocities from 500 feet per minute to 4000 feet per minute. The detector shall have an operating temperature range of 32˚F to 158˚F. The detector housing shall be equipped with an integral mounting base capable of accommodating ionization detector heads. It shall be capable of local testing via magnetic switch or remote test- ing using the RTS451KEY or RTS451 Remote Test Station. The duct detector housing shall incorporate an airtight smoke chamber in compliance with UL S911. The housing shall be capable of mounting to rectangular or round ducts up to 12′ wide without adapter brackets. An integral filter system shall be included to reduce dust and residue effects on detector and housing, thereby reducing maintenance and servicing. Sampling tubes shall be installed after the housing is mounted to the duct by passing through the duct housing. Terminal connections shall be of the strip and clamp method suitable for 14–18 AWG wiring. Electrical Specifications Power Supply Voltage 20 - 29 VDC 24 VAC 50 - 60 Hz 120 VAC 50 - 60 Hz 220/240 VAC 50 - 60 Hz CURRENT REQUIREMENTS (USING NO ACCESSORIES) Max. standby current 25 mA 35 mA RMS 20 mA RMS 20 mA RMS Max. alarm current 95 mA 55 mA RMS 55 mA RMS 30 mA RMS CONTACT RATINGS Accessory Current Loads at 24 VDC Alarm initiation contacts (SPST) 2.0A @ 30 VAC/DC (0.6 power factor) Device Standby Alarm Alarm auxiliar y contacts (DPDT) 10A @ 30 VDC AP451 12mA max. 30mA max. 10A @ 250 VAC PA400W 0mA max. 15mA max. 0.3 @32 VDC (resistive) RA400Z 0mA max. 7mA max. RTS451 0mA max.* 8mA max. 12mA max.* 8mA max. Trouble contacts (SPST) *NOTE: When initiating an alarm, the RTS451 and RTS451KEY require 103mA in alarm. Nominal standby current is 0mA. Alarm current is 8 mA maximum when test magnet is removed. RTS451KEY NOTE: Accessories are only rated to 120°F and must be installed indoors. ANY COMBINATION OF ACCESSORIES MAY BE USED SUCH THAT THE GIVEN CURRENT LOADS TOTAL: Physical Specifications 100mA OR LESS IN THE STANDBY STATE, 150mA OR LESS IN THE ALARM STATE. Length: 14.5 inches (36.8 cm) Weight: 4.5 lbs. (2.0 kg) Air Duct Velocity: 500 to 4000 ft./min. Width: 5 inches (12.7 cm) Operating Temperature Range: 32º to 158ºF (0º to 70ºC) Operating Humidity Range: 10% to 93% relative humidity Depth: 4 inches (10.2 cm) Storage Temperature Range: –22º to 158ºF (–30º to 70ºC) Voltage: 24 VAC/VDC or 120/220 VAC Ordering Information Model Description DH400ACDCIHT 4-wire ionization high-temperature duct RTS451KEY Remote test station with key smoke detector RTS451 Remote test station 1451DHHT Replacement ionization high-temperature PA400W Piezo sounder (white) sensor head PS24LOW Add-on strobe (white) ST-1.5 Metal sampling tube duct widths 1′–2′ RA400Z Remote annunciator alarm LED ST-3 Metal sampling tube duct widths 2′–4′ CRT400 Ion cover removal tool ST-5 Metal sampling tube duct widths 4′–8′ F36-05-00 Replacement air filters (two per package) ST-10 Metal sampling tube duct widths 8′–12′ MOD400R Sensitivity test module P48-21-00 End cap for metal sampling tubes M02-04-00 Test magnet APA451 Annunciator with piezo alarm and power LEDs RS14 Ion replacement screen DH400OE-1 Weatherproof Outdoor Enclosure A2650-01 Replacement installation kit (mounting hardware) 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 in China Ph: 86.29.8832.0119 Fx: 86.29.8832.5110 System Sensor – Far East Ph: 85.22.191.9003 Fx: 85.22.736.6580 System Sensor – India Ph: 91.124.637.1770 x.2700 Fx: 91.124.637.3118 System Sensor Europe Ph: 44.1403.891920 Fx: 44.1403.891921 System Sensor in Singapore Ph: 65.6273.2230 Fx: 65.6273.2610 System Sensor – Australia Ph: 613.54.281.142 Fx: 613.54.281.172 System Sensor – Russia Ph: 70.95.937.7982 Fx: 70.95.937.7983 © 2003 System Sensor. The company reserves the right to change product specifications without notice. A05-0953-002•10/03•#1169