500 Series™ Intelligent Duct Smoke Detector A Division of Pittway 3825 Ohio Avenue, St. Charles, IL 60174 1-800-SENSOR2 (736-7672), Fax 630-377-6495 http://www.systemsensor.com Models Available DH500 Duct Smoke Sensor Housing DH500ACDC Duct Smoke Sensor Housing with Optional Fan Control Features • DH500 –Operates from the control panel communication line –Has outputs for remote LED output, remote test (24 VDC) • DH500ACDC –24 VAC/DC or 120/220 VAC operation –Powered outputs for remote LED, remote test and sounder –Two Form C auxiliary contacts (external supply is required only when using the auxiliary relay or connecting any accessories) • Continuous sensitivity monitoring from the panel • Intelligent ion or photo heads with twist-in/twist-out removal • Air velocity rating from 500 to 4000 fpm • Remote test station and remote annunciator accessories • Clear polycarbonate cover for convenient visual inspection of sampling tube filters • UL 268A listed • 3-year warranty Specifications – DH500 Voltage Range: Standby Current (nominal): Power-up Surge at Max. Rated Voltage: LED Current (nominal): Length: Width: Depth: Weight: 15 – 28 VDC peak 200 µA at 24 VDC 1.5 mA/sec. 6 mA at 24 VDC 14.5 inches (36.7 cm) 5 inches (12.7 cm) 4 inches (10.2 cm) 4 lbs. (1.8 kg) Operating Temperature Range: Operating Humidity Range: Duct Air Velocity: 32° to 120° F (0° to 49° C) 10% to 93% relative humidity 500 – 4000 ft./min. (91.4 – 1219.2 m/min.) APPROVED © System Sensor 4/97 This document is not intended to be used for installation purposes. A05-200-02 General Description System Sensor premium duct detectors, Models DH500 and DH500ACDC, feature the superior capabilities of an intelligent sensor in a unit that is easy to install and maintain. The DH500 Series Duct Housing samples air currents passing through a duct and gives dependable performance for shutdown of fans, blowers, and air conditioning systems, preventing the spread of toxic smoke and fire gases through the protected area. Both Model DH500 and DH500ACDC duct housings can accommodate either the 1551B Intelligent Ionization Sensor or the 2551B Intelligent Photoelectronic Sensor. The twist-in, twist-out heads allow for quick and easy cleaning or application changes without removing the duct housing. These sensors communicate and are continuously monitored through the communication line. Detector sensitivity changes caused by dirt, smoke, temperature, or humidity are reported to the panel, allowing compensation algorithms to maintain the sensor’s set sensitivity. An advance indication at the panel specifies the sensor address, allowing for selected maintenance to be performed as needed. Remote alarm annunciation can be accomplished by using the RA400Z Remote Annunciator or the RTS451 or RTS451KEY Remote Test Station. The RTS451 and RTS451KEY allow testing of the detector from a remote location. The detector must be reset from the control panel. Model DH500 incorporates zener diodes to conserve power for communications to other devices and limit power to supplementary accessories at times of high power demands. WARNING: Duct smoke detectors have specific limitations. DUCT DETECTORS ARE NOT a substitute for an open area smoke detector, NOT a substitute for early warning detection, and NOT a replacement for a building’s regular fire detection system. Refer to NFPA 72 and 90A for additional duct detector application information. Architect/Engineer Specifications The air duct smoke detector shall be a System Sensor Model DH500ACDC or DH500 Intelligent Series Smoke Duct Detector to be used with compatible control units. The detector housing shall be UL listed per UL 268A specifically for use in air handling systems. The detector shall operate in air velocities from 500 to 4000 feet per minute. The detector housing shall be equipped with an integral mounting base capable of accommodating either intelligent photoelectronic or intelligent ionization detector heads. It shall be capable of local testing via magnetic switch or remote testing from the RTS451 or RTS451KEY Remote Test Station. The duct detector housing shall incorporate an airtight smoke chamber in compliance with UL 268A, Standard for Smoke Detectors for Duct Applications. The housing shall be capable of mounting to either rectangular or round ducts 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 easily 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. Wiring shall be connected to a terminal strip and be so noted. Unused 4 Remote Test (–) RA400Z (+) (+) RA400Z or (–) RTS451 LED (–) REMOTE ALARM LED OPTION 1 PER UNIT 8mA CURRENT DRAW Must break tab on back of RA400Z when used with DH500. 5 (+) RA400Z (+) * EXTERNAL (–) POWER (+) SUPPLY 1 2 3 RTS451 RTS451 (+) REMOTE TEST STATION (+) RA400Z or (–) RTS451 Comm. Line (–) Comm. Line (+) Communication Line Comm. Line (–) (–) LED OPTION 1 PER UNIT 8mA CURRENT DRAW (+) UL Listed Control Panel 1st Detector in Loop 2nd Detector in Loop TEST COIL OPTION 1 PER UNIT 95mA CURRENT DRAW System Wiring Diagram for DH500 Duct Smoke Detector Using a UL Listed Control Panel Page 2 A05-200-02 DH500ACDC Power Supply Electrical Ratings Power 120 VAC (120 – 132) Requirements mA rms maximum Device Standby Alarm DH500ACDC 44 52 PA400* — 3 RA400Z* — 1.5 RTS451* — 1.5 RTS451** 11.5 13 RTS451KEY** 11.5 13 240 VAC (204–264) mA rms maximum Standby Alarm 25 30 — 1.5 — 1 — 1 5.5 6.5 5.5 6.5 24 VAC (20.6–26.4) mA rms maximum Standby Alarm 65 182 — 29 — 17.3 — 17.3 140 157 140 157 24 VDC (20–30) ma DC maximum Standby Alarm 26 87 — 15 — 7 — 7 71 78 71 78 The currents shown for the DH500ACDC are maximum values with no accessories. *All accessory currents are additional to DH500ACDC. There are no additional currents for accessories in standby. **These devices draw current when the magnet is held in place to initiate an alarm. Auxiliary Relay Contacts 10 amps maximum at 30 VDC; 10 amps maximum at 277 VAC. 1/3 Hp at 240 VAC; 360 VA at 240 VAC. Programming Specifications Additional requirements for intelligent system control panels: 1. The panel must not continuously poll the same unit for more than 3 seconds or the auxiliary relay and auxiliary alarm output could switch states. After 3 seconds of continual polling of a device, the panel must wait a minimum of 100mS before polling or communicating to that same device. 2. Communications must not cease for more than 3 seconds without an additional clock pulse (after Pulse Width 5) to turn off the LED on the sensor. 3. To allow the auxiliary relay and auxiliary alarm output to return to a standby condition, (after being in alarm) the panel must wait a minimum of 100mS after turning off the sensor LED before re-communicating to the same device. CONDUIT HOLES DUCT DETECTOR HOUSING INLET SAMPLING TUBE (SUPPLIED SEPARATELY) FOAM GASKETS TUBE END PLUG 1 NOTE: JUMPER WIRE (J5) IS REQUIRED TO BE INTACT FOR 2-WIRE APPLICATIONS. MUST CUT J5 FOR POWER SUPERVISION WHEN EXTERNAL POWER IS USED. 2 3 K2 4 5 – 6 DUCT DETECTOR COVER 120 VAC J5 + PC BOARD INSULATOR 7 8 9 10 11 12 13 14 15 16 17 O-RINGS DETECTOR BASE 240 VAC 24 VAC & 24 VDC HOUSING MOUNTING SCREWS EXHAUST FILTER ADAPTER ALWAYS RUN AUXILIARY CONTROL WIRING IN SEPARATE CONDUIT COMMUNICATION (+) LINE FROM PANEL (–) (+) COMMUNICATION LINE TO REST (–) OF SYSTEM SAMPLING TUBE MOUNTING SCREWS NOTE: FOR POWER SUPPLY WIRES, POLARITY IS NOT IMPORTANT. DETECTOR HEAD (SUPPLIED SEPARATELY) TEST MAGNET System Wiring for DH500ACDC SAMPLING TUBE FILTERS Exploded View of DH500ACDC Duct Smoke Detector Components 24V auxiliary output maximum load is 80 mA; alarm output maximum load is 20 mA. 2 1 6 2 ALARM SIGNAL (+) LED 2 AUX POWER (–) (+) 2 ALARM SIGNAL (+) ALARM SIGNAL (+) AUX POWER (–) AUX POWER (–) (+) 3 RESET (NOT USED) 3 AUX POWER (+) 1 TEST (–) DUCT DETECTOR DH500ACDC 4 LED 6 TEST (+) 5 TEST (–) DUCT DETECTOR DH500ACDC (–) PA400 (OPTIONAL) AUDIBLE ALERT 6 DUCT DETECTOR DH500ACDC (–) DO NOT BREAK TAB ON RA400Z RA400Z (OPTIONAL) REMOTE (LED) ANNUNCIATOR RTS451 (OPTIONAL) REMOTE TEST STATION NOTE: THE RTS451 RESET CANNOT BE USED ON THE 500 SERIES. Accessory Wiring Page 3 A05-200-02 Ordering Information Part No. Description DH500ACDC Intelligent duct smoke sensor housing with auxiliary relays DH500 Intelligent duct smoke sensor housing 1551B Intelligent ionization sensor head 2551B Intelligent photoelectronic sensor head ST-1.5 Metal sampling tube duct widths 1´–2´ ST-3 Metal sampling tube duct widths 2´–4´ ST-5 Metal sampling tube duct widths 4´–8´ ST-10 Metal sampling tube duct widths 8´–10´ Accessories RTS451 RTS451KEY RA400Z PA400 F36-05-00 M02-04-00 P48-21-00 A2650-01 RS24 RS14 MOD400R CRT400 Remote test station (see below) Remote test station with key (see below) Remote LED (see below) Piezo alert sounder (see below) Replacement filters Test magnet End cap for sampling tube Installation kit (parts bag) Photoelectronic replacement screen Ionization replacement screen Sensitivity test kit Ionization cover removal tool RA400Z Remote LED PA400 Piezo Alert Sounder ALARM RESET RTS451 Remote Test Station ON TEST RTS451KEY Remote Test Station System Sensor Worldwide Manufacturing & Distribution In Canada: System Sensor Canada, A Division of Pittway Corporation of Canada 6581 Kitimat Road, Unit #7 Mississauga, Ontario Canada L5N 3T5 Telephone: 905-812-0767 Fax: 905-812-0771 Page 4 In the United Kingdom: System Sensor Europe, Ltd. A Member of Pittway Corporation Horsham Gates III, North St. Horsham, West Sussex RH13 5PJ, United Kingdom Telephone: 44-1403-276500 Fax: 44-1403-276501 In India: System Sensor India A Division of Pittway A-204 Maheshwari Nagar Orkay Mills Lane Andheri East, Mumbai 400093 Telefax: 91-022-8202564 In the Far East: System Sensor Far East A Division of Pittway Rm 903, Tower A, New Mandarin Plaza, 14 Science Museum Road TST East, Kowloon, Hong Kong Telephone: 852-2191-9003 Fax: 852-2736-6580 A05-200-02