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 2400AT Photoelectronic with Thermal and Horn 2400AIT Photoelectronic with Isolated Thermal and Horn 2412B/2412BA Photoelectronic 2412THB Photoelectronic with Thermal 2412AT Photoelectronic with Thermal and Horn 2424 Photoelectronic 2424TH Photoelectronic with Thermal 2424AT Photoelectronic with Thermal and Horn 2424AIT Photoelectronic with Isolated Thermal and Horn 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 • Optional built-in 85 dBA horn Specifications Size: 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. © System Sensor 8/96 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 Audible (AT/AIT models only): Piezoelectric horn, 85 dBA @ 10 ft. This document is not intended to be used for installation purposes. APPROVED 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 11 different photoelectronic detectors with a variety of voltages, wiring configurations, thermal options, and piezo horns. Electrical Specifications Control Model Product Panel 2400 Photo Detector 2-wire 2400TH Photo Detector w/Fixed Heat Sensor 2-wire 2400AT Photo Detector w/Fixed Heat Sensor & Horn 2-wire 2400AIT Photo Detector w/Isolated Heat Sensor & Horn 2-wire 2412B Photo Detector 4-wire 2412THB Photo Detector w/Fixed Heat Sensor 4-wire 2412AT Photo Detector w/Fixed Heat Sensor & Horn 4-wire 2424 Photo Detector 4-wire 2424TH Photo Detector w/Fixed Heat Sensor 4-wire 2424AT Photo Detector w/Fixed Heat Sensor & Horn 4-wire 2424AIT Photo Detector w/Isolated Heat Sensor & Horn 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 24 VDC 24 VDC 12 VDC 12 VDC 12 VDC 24 VDC 24 VDC 24 VDC 24 VDC Auxiliary Contacts No No No No Yes Yes No Yes Yes No No Remote LED Option Yes Yes Yes Yes No No Yes No No Yes Yes Current Consumption Standby (max.) Alarm (max.) 120 µA * 120 µA * 120 µA 67mA 120 µA 67mA 120 µA 77mA 120 µA 77mA 120 µA 51mA 120 µA 41mA 120 µA 41mA 120 µA 43mA 120 µA 43mA 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 Page 2 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. A05-194-03 400 Series Wiring Guide (–) EOL RESISTOR (+) (+) (+) 2 (+) REMOTE 3 LED (+) (–) 2 (+) 1 RA400Z REMOTE 3 LED (+) (–) 1 RA400Z (–) (–) OPTIONAL 2400/2400TH/2400AT Wiring Diagram OPTIONAL OPTIONAL CLASS “A” LOOP EOL RESISTOR (–) (+) SMOKE DETECTION LOOP (+) 2 (+) 3 4 OPTIONAL (–) (+) 2 (+) 1 3 N/O 4 5 RA400Z (–) 2400AIT Wiring Diagram 1 N/O 5 RA400Z (–) OPTIONAL (–) EOL RESISTOR THERMAL DETECTION LOOP (–) POWER FROM CONTROL PANEL (+) (+) 2 (+) COMMON 2 N/O 1 (–) N/C N/O 8 7 4 5 6 COMMON 1 (–) N/O N/C BLACK RED N/O 8 7 4 5 A77-716B 12/24 VDC EOL RELAY 6 ALARM CIRCUIT FROM CONTROL PANEL PURPLE PURPLE 2412B/THB, 2424/TH Wiring Diagram EOL RESISTOR (–) BLACK REMOTE (+) LED (+) 2 3 4 N/O (–) (+) OPTIONAL 1 N/O 8 4 (–) N/O N/O 5 7 RA400Z (–) (–) 1 8 PURPLE 5 7 RA400Z REMOTE (+) LED (+) 2 3 PURPLE (+) OPTIONAL RED A77-716B 12/24 VDC (+) EOL RESISTOR ALARM CIRCUIT ALARM CIRCUIT 2412AT, 2424AT, 2424AIT Wiring Diagram Page 3 ISOLATED THERMAL DETECTION LOOP MODEL: EOL RESISTOR 2424 AIT ONLY 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 2400AT Photoelectronic detector, 2-wire, 24 VDC with integral 135° F fixed heat sensor and 85dBA horn 2400AIT Photoelectronic detector, 2-wire, 24 VDC with isolated 135° F fixed heat sensor and 85dBA horn 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 2412AT Photoelectronic detector, 4-wire, 12 VDC, with integral 135° F fixed heat sensor and 85dBA horn 2424 Photoelectronic detector, 4-wire, 24 VDC, with auxiliary contacts 2424TH 2424AT 2424AIT Photoelectronic detector, 4-wire, 24 VDC, with auxiliary contacts and integral 135°F fixed heat sensor Photoelectronic detector, 4-wire, 24 VDC, with integral 135°F fixed heat sensor and 85dBA horn Photoelectronic detector, 4-wire, 24 VDC, with isolated 135°F fixed heat sensor and 85dBA horn 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/AT/AIT, 2412THB/AT and 2424TH/AT/AIT 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 Distribution In Canada: System Sensor 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. 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-204 Maheshwari Nagar Orkay Mills Lane Andheri East, Mumbai 400093 Telefax: 91-022-8202564 In the Far East: System Sensor Pittway Far East, Ltd. Suite 706, New T&T Centre 7 Canton Road Tsimshatsui, Kowloon, Hong Kong Telephone: 852-2730-9090 Fax: 852-2736-6580 A05-194-03