2424

400 Series™ Direct-Wire Photoelectronic 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 2400/2400A Photoelectronic 2400TH Photoelectronic with Thermal 2412B/2412BA Photoelectronic 2412THB Photoelectronic with Thermal 2424 Photoelectronic 2424TH Photoelectronic with Thermal Features • 12 or 24 volt operation • Unique optical sensing chamber • Removable cover and insect screen for easy cleaning • Visible LED blinks in standby, latches on in alarm • Sealed against dirt, insects, and back pressure • Field sensitivity metering of detector to meet NFPA 72 requirements • Twist-on mounting bracket with tamper option • SEMS screws for easy wiring • 3-year warranty • Optional built-in 135° F (57° C) heat sensor Specifications 3.2″ (8.1 cm) h, 5.5″ (13.9 cm) dia. with mounting bracket; add .5″ (1.27 cm) to height for thermal Shipping Weight: 0.5 lb. (227 g) Operating Temperature Range: Thermal Models: 32° F to 100° F (0° C to 38° C) All Other Models: 32° F to 120° F (0° C to 49° C) Operating Humidity Range: 10 – 93% RH noncondensing Air Velocity Rating: 3000 fpm Wiring Gauge: 12 – 18 AWG, twisted pair recommended Mounting: 31/2″ or 4″ octagon box, 4″ square box with plaster ring, 50, 60, 75 mm boxes Smoke Detector Spacing: On smooth ceilings (as defined in NFPA 72), spacing of 30 feet (900 sq. ft.) may be used as a guide. Other spacing may be used depending on ceiling height, high air movements, and other conditions or response requirements. Size: © System Sensor 2/97 Sensitivity: 3.0% ± .7 ft. nominal Test Features: 1. Test port – Insert 0.1 inch maximum diameter allen wrench or screwdriver into test port on detector housing. 2. Test card – After removing detector cover, insert calibrated test card into test slot on screen. 3. Test module – Using a standard voltmeter interface, insert MOD400R plug into detector’s module port. Fulfills calibrated sensitivity test per NFPA 72. Thermal Sensor Rating (thermal models only): 135° F fixed temperature restorable APPROVED This document is not intended to be used for installation purposes. A05-194-03 General Description System Sensor 400 Series photoelectronic detectors are specifically designed to meet the stringent performance requirements of industrial and commercial fire detection/ alarm systems. The design of these detectors emphasizes ease of installation and field maintenance. The 400 Series offer 6 different photoelectronic detectors with a variety of voltages, wiring configurations, and thermal options. Electrical Specifications Control Model Product Panel 2400 Photo Detector 2-wire 2400TH Photo Detector w/Fixed Heat Sensor 2-wire 2412B Photo Detector 4-wire 2412THB Photo Detector w/Fixed Heat Sensor 4-wire 2424 Photo Detector 4-wire 2424TH Photo Detector w/Fixed Heat Sensor 4-wire * Must be limited by control panel Relay Contact Ratings: Resistive or inductive (60% power factor) load Alarm Contacts Form A: 2.0A @ 30 VAC/DC Form C: 2.0A @ 30 VAC/DC 0.6A @ 110 VDC, 1.0A @ 125 VAC Reset Time: .3 sec. (max.) Startup Time: 34 sec. (max.) Operating Voltage 12/24 VDC 12/24VDC 12 VDC 12 VDC 24 VDC 24 VDC Auxiliary Contacts No No Yes Yes Yes Yes Remote LED Option Yes Yes No No No No Current Consumption Standby (max.) Alarm (max.) 120 µA * * 120 µA 77mA 120 µA 120 µA 77mA 120 µA 41mA 41mA 120 µA Engineering Specifications Smoke Detector shall be a photoelectronic type (model 2400, 2412, 2424) or a combination photoelectronic/ thermal (model 2400TH, 2412TH, 2424TH) with thermal sensor rated at 135° F as manufactured by System Sensor. Wiring connections shall be made by means of SEMS screws. The detector will have a visible LED which will blink in standby and latch on in alarm. The detector shall have a nominal sensitivity of 3% per foot as measured in the UL smoke box. The detector screen and cover should be easily removable for cleaning. It shall be possible to perform a sensitivity and functional test without the need of generating smoke. Detector circuitry shall perform a self test on the sensing chamber and internal electronics every 40 seconds. If circuitry fails, the detector LED shall stop blinking. The detector shall have a mounting bracket that allows for mounting to a 31/2″ or 4″ octagon box or 4″ square electrical box. Page 2 A05-194-03 400 Series Wiring Guide (–) EOL RESISTOR (+) (+) (+) 2 (+) (–) 1 (+) 2 (–) 1 REMOTE 3 LED (+) REMOTE 3 LED (+) RA400Z (–) RA400Z (–) OPTIONAL OPTIONAL 2400/2400TH Wiring Diagram OPTIONAL CLASS “A” LOOP (–) POWER FROM CONTROL PANEL (+) (+) COMMON N/O N/C (+) 2 2 1 (–) N/O 8 7 COMMON N/O N/C 1 (–) BLACK RED 4 5 6 4 5 6 ALARM CIRCUIT FROM CONTROL PANEL N/O 8 7 A77-716B 12/24 VDC EOL RELAY PURPLE PURPLE EOL RESISTOR 2412B/THB, 2424/TH Wiring Diagram Page 3 A05-194-03 Ordering Information Part No. Description Two-Wire Models 2400 Photoelectronic detector, 2-wire, 12/24 VDC 2400A Same as above, Canadian model 2400TH Photoelectronic detector, 2-wire, 12/24 VDC with built-in 135° F fixed heat sensor Four-Wire Models 2412B Photoelectronic detector, 4-wire, 12 VDC, with auxiliary contacts 2412BA Same as above, Canadian model 2412THB Photoelectronic detector, 4-wire, 12 VDC, with auxiliary contacts and integral 135° F fixed heat sensor 2424 Photoelectronic detector, 4-wire, 24 VDC, with auxiliary contacts 2424TH Photoelectronic detector, 4-wire, 24 VDC, with auxiliary contacts and integral 135° F fixed heat sensor Accessories A77-716B End of line relay for power supervision, 12/24 VDC RA400Z Remote annunciator for 2 or 4 wire systems, 3-32V – Use with ion and photo detectors. Fits standard U.S. single gang electrical box. (See below.) MOD400R Detector sensitivity test module – Use with most analog or digital multimeters. Satisfies requirement of NFPA 72 for sensitivity testing. (See below.) RS24 Replacement insect screen for 2400, 2412B, 2424 RS24T Replacement insect screen for 2400TH, 2412THB and 2424TH DUST45 Replacement protective dust cover for 400 Series The MOD400R Field Sensitivity Test Module can be used with any standard DC voltmeter or multimeter to check the sensitivity range of System Sensor’s detectors (satisfies NFPA 72 requirement for sensitivity testing). RA400Z Remote Annunciator, 3 – 32V Use with ion and photo detectors that have remote annunciator output System Sensor Worldwide Manufacturing & Distribution In Canada: Telephone: 905-812-0767 Fax: 905-812-0771 In China: Telephone: 86-29-524-6253 Fax: 86-29-524-6259 Page 4 In the Far East: Telephone: 852-2191-9003 Fax: 852-2736-6580 In India: Telefax: 91-11-5676815 In Italy: Telephone: 39-40-949011 Fax: 39-40-382137 In the United Kingdom: Telephone: 44-1403-276500 Fax: 44-1403-276501 A05-194-03