B404B

H V A C S Y S T E M S M O N I T O R I N G Duct Smoke Detector for Special Applications Model 2451 with B404B/B404BT and RTC Remote Test Kit UL 268A (Requires RTC accessory) Product Overview Low standby current Two LEDs “blink” in standby Detector head plugs easily into base Field adjustable sensitivity Built-in test switch Field sensitivity metering of detector to meet the requirements of NFPA 72 120VAC and 24VAC/DC bases with built-in shorting spring Built-in tamper-resistant feature Designed for mounting on standard electrical box SEMS screws for easy wiring and positive wire retention Removable cover and insect screen for field cleaning Specifications Operating Voltage/ Alarm current Mounting base dependent (see char t) Standby current 120 mA maximum Sensitivity 3% ± .7% / ft. Weight 0.5 ib. (277 g) Size 3.2˝/8.1 cm height 6.2˝/15.8 cm diameter Construction Flame retardant Nor yl plastic Operating Temperature 32° to 120°F (0° to 49°C) Humidity Range 10 to 93% RH non-condensing Air Velocity Rating 0 to 3000 fpm maximum 2451 with B404BT and RTC (Includes the RTS451) The System Sensor 2451 photoelectronic smoke detector is UL listed to UL 268A specifically for use in no-flow/low-flow air-handling systems. It’s designed for installations where a standard Venturi principle duct smoke detector is unsuitable. This is the perfect combination for installation in ducts where the air velocity is below 500 fpm or for duct sizes as small as 8 inches in diameter. Pendant mounted in a standard electrical box within the duct, the twist-in/twist-out head allows easy removal from the base for quick cleaning and maintenance. The detector can be combined with the System Sensor B404B 120VAC base or the B404BT 24VAC/DC base. Remote testing is accomplished using our Remote Test Coil accessory that includes the RTS451. The APA451, Remote Annunciator with Piezo Alarm, can also be connected to provide an audible and visible indication of smoke detector status. Architectural/Engineering Specifications The air duct detector shall be a System Sensor model 2451 Series Smoke detector UL listed to UL 268A specifically for use in air handling systems when used in conjunction with the B404B (120VAC) or the B404BT (24VAC/DC) base. The detector shall operate at air velocities up to 3000 feet per minute. It shall be capable of local testing via magnetic switch or remote testing using the UL listed RTC Remote Test Coil accessory with the RTS451 Remote Test Station. It shall be capable of providing duct smoke detector status via the UL listed model APA451 Piezo Annunciator. Base Chart Base Model B404B B404BT Version UL/ULC UL Loop Type 4-wire 4-wire Current Limit resistor Yes Yes Alarm Contact Type Form A&C + A supy. Form A&C + A supy. Nominal Voltage 120VAC 24VAC/DC rms Alarm Current (mA) 20.4 94 Junction Box Selection Base Model B404B B404BT Single Gang No No 31/2˝ Oct. No No 4˝ Oct. Yes Yes 4˝ Sq. Yes Yes 50mm 60mm No No No No 75mm No No Wiring Guide B404B Typical Wiring Diagrams: (+) (–) RA400Z (Optional) (+) (–) RA400Z (Optional) 3 4 3 4 RELEASING DEVICE BLACK LEADS TRANSFORMER PRIMARY 2 1 5 11 14 13 12 6 7 8 9 10 2 1 5 11 14 13 12 6 7 8 9 10 EOL SPECIFIED BY PANEL MANUFACTURER 120 VAC 120 VAC FIRE ALARM CONTROL PANEL ALARM INITIATION LOOP RELEASING DEVICE POWER POWER RELEASING DEVICE H0270-00 B404B Base Terminals No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Function Remote Annunciator (+) Not Used Not Used Remote Annunciator (-) Not Used N.O. N.O. N.O. N.O. C. C. N.O. N.C. C. Alarm Relay Form C Auxiliary Contacts Alarm Relay Form A Initiation Contacts FIRE ALARM CONTROL PANEL 6 120 VAC 7 8 9 10 11 3 BLACK LEADS TRANSFORMER PRIMARY 4 RA400Z (Optional) Supervisory Relay Form A Contacts 2 1 5 14 13 12 EOL SPECIFIED BY PANEL MANUFACTURER ALARM INITIATION LOOP POWER FAN/DAMPER CONTROL H0271-00 B404BT Typical Wiring Diagrams: 3 APA451 2 1 (Optional) 3 APA451 2 1 (Optional) 3 4 RELEASING DEVICE 3 4 RELEASING DEVICE 2 1 24 VACrms/DC 2 5 11 14 13 12 24 VACrms/DC EOL 1 6 5 11 14 13 12 SPECIFIED BY PANEL MANUFACTURER 6 7 8 9 10 7 8 9 10 FIRE ALARM CONTROL PANEL ALARM INITIATION LOOP H0268-00 NOTE: ABOVE DIAGRAM SHOWS NFPA REQUIRED WIRING OF SUPERVISED SYSTEMS. SCHEMATIC SHOWN BELOW FOR REFERENCE. T POWER SOURCE OPRIATE TERMINALS DETECTOR. SEE ATIONS FOR AL POWER SUPPLY TION. CONTROL PANEL B404BT Base Terminals No. 1 2 Function Remote Annunciator (+) Test Coil (+) Not Used EOL Remote Annunciator (-) 3 APA451 2 (Optional) 1 SUPERVISORY RELAY SUPERVISORY RELAY 3 4 ALARM RELAY ALARM RELAY 5 6 7 RTC (-) N.O. N.O. N.O. N.O. C. C. N.O. N.C. C. 3 4 MANUFACTURER Supervisory Relay Form A Contacts SPECIFIED BY PANEL 2 14 1 24 VACrms/DC 8 9 10 11 12 13 14 FAN / DAMPER SHUTDOWN 5 11 13 12 ING OF AUXILIARY , REFER TO CTURER'S TION INSTRUCTIONS ACT MANUFACTURER. E SUPERVISORY RELAY NOW S A "FORM C" CONTACT FOR IZED APPLICATIONS. NDARD APPLICATIONS, ONLY CONTACT IS USED 6 Alarm Relay Form A Initiation Contacts 7 8 9 10 Alarm Relay Form C Auxiliary Contacts POWER RTC Ring Replacement of B404BT: H0269-00 RTC Wiring Diagram: B404B/B404BT REMOTE ANNUNCIATOR (+) TEST COIL (+) RTS451 1 2 3 4 FIELD INSTALLED JUMPER 1 2 3 4 5 TEST COIL ALARM TEST COIL EOL RESISTOR SPECIFIED BY PANEL MANUFACTURER H0272-00 RTC (–) 5 4-POSITION TERMINAL BLOCK H0233-00 ALARM ALARM POWER RESET RTS451KEY Remote Test Station (provided with Remote Test Coil) APA451 Piezo Annunciator RA400Z Remote Annunciator Top Mount in Ventilation Shaft Ordering Information Part No. 2451 B404B B404BT Description Photoelectronic plug-in detector (order one of the bases listed below and the RTC) 120VAC detector base 24VAC/DC detector base APA451 RA400Z Accessories RTC Description Remote test coil kit (Includes RTS451 remote test station) Remote annunciator with piezo alarm Remote annunciator System Sensor Sales and Service System Sensor Headquarters 3825 Ohio Avenue St. Charles, IL 60174 Ph: 800/SENSOR2 Fx: 630/377-6495 Documents-on-Demand 800/736-7672 x3 www.systemsensor.com System Sensor Canada Ph: 905.812.0767 Fx: 905.812.0771 System Sensor Europe Ph: 44.1403.891920 Fx: 44.1403.891921 System Sensor in China Ph: 86.29.524.6253 Fx: 86.29.524.6259 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: 91.124.2371770 x.2700 Fx: 91.124.237.3118 © 2004 System Sensor. The company reserves the right to change product specifications without notice. A05-0952-001•1/04•#1228