2151 Duct Smoke Detector for Special Applications The System Sensor 2151 low-profile photoelectric smoke detector with a B114LP or B114LPBT base is listed to Underwriters Laboratories 268A specifically for use in noflow/low-flow air-handling systems. Features for 2151/B114LP/B114LPBT • Low-profile smoke detector design • Low standby current • Two LEDs blink in standby • Detector head plugs easily into base • F ield sensitivity metering of detector to meet the requirements of NFPA 72 with the use of SENS-RDR • Designed for mounting on a standard electrical box • Removable cover and insect screen for field cleaning • Accepts 24 or 120V supply voltage Agency Listings S911 The 2151 can be used as a pendant mount detector in no-flow/ low-flow air-handling systems (0-3,000 FPM). The pendant /plenum mounted 2151 is to be installed into a B114LP or B114LPBT base. This is the perfect combination for installation in ducts where the air velocity is below 500fpm or for duct sizes as small as 8” 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 2151 heads can be combined with the System Sensor B114LP 120VAC base or the B114LPBT 24VAC/ DC base. 2151 Photoelectric Detector Specifications Architectural/Engineering Specifications The air duct smoke detector shall be a System Sensor model 2151 Series Smoke detector listed to UL 268A specifically for use in air handling systems when used in conjunction with the B114LP or B114LPBT base. The detector shall operate at air velocities up to 3,000 feet per minute. It shall be capable of local testing using a magnet test on the 2151 sensor head. Physical Specifications Size Weight Operating Temperature Range Operating Humidity Range 1.66” (4.22cm) H 3.6 oz (104 g) 32˚F to 120˚F (0˚C to 49˚C) 10 to 93% relative humidity non-condensing B114LP/B114LPBT Plug-In Detector Base Physical Specifications Diameter Mounting Operating Temperature Range 6.1 inches (155mm) 4-inch (102 mm) square box with or without plaster ring; Minimum Depth - 1.5 inches (38 mm) 4-inch Octagon Box; Minimum Depth - 1.5 inches (38 mm) Refer to applicable sensor Operating Temperature Range using the Base/Sensor Cross Reference Chart at systemsensor.com B114LP Typical Wiring Diagrams RA100Z (Optional) B114LP Base Terminals No. Function 1 Remote Annunciator (+) 2 Not Used 3 Not Used 4 Remote Annunciator (–) 5 Not used 6 N.O. Supervisory Relay 7 N.O. Form A Contacts 8 N.O. Alarm Relay 9 N.O. Form A 10 C. Initiation 11 C. Contacts 12 N.O. Alarm Relay 13 N.C. Form C 14 C. Auxiliary Contacts EOL 2 6 120 VAC FIRE ALARM CONTROL PANEL 7 14 5 1 10 9 8 13 11 SPECIFIED BY PANEL MANUFACTURER 12 ALARM INITIATION LOOP S0279-01 FAN/DAMPER CONTROL POWER (+) 6 RELEASING DEVICE 4 3 EOL 2 2 7 14 5 1 120 VAC RA100Z (Optional) (–) 4 3 BLACK LEADS TRANSFORMER PRIMARY (+) RA100Z (Optional) (–) FIRE ALARM CONTROL PANEL 4 3 BLACK LEADS TRANSFORMER PRIMARY 9 8 10 13 11 12 120 VAC 1 6 7 14 5 8 9 10 13 11 SPECIFIED BY PANEL MANUFACTURER 12 ALARM INITIATION LOOP POWER RELEASING DEVICE POWER S02809-01 RELEASING DEVICE NOTE: ABOVE DIAGRAM SHOWS NFPA REQUIRED WIRING OF SUPERVISED SYSTEMS. SCHEMATIC SHOWN BELOW FOR REFERENCE. SUPERVISORY RELAY SUPERVISORY RELAY EOL HVDS00700 CONTROL PANEL ALARM RELAY ALARM RELAY SPECIFIED BY PANEL MANUFACTURER B114LPBT Typical Wiring Diagrams B114LPBT Base Terminals No.Function 1 Remote Annunciator (+) 2 Test Coil (+) 3 Not Used 4 Remote Annunciator (–) 5 RTC (–) 6 C. Supervisory Relay 7 N.O. Form A Contacts 8 N.O. Alarm Relay 9 N.O. Form A 10 C. Initiation 11C. Contacts 12 N.O. Alarm Relay 13 N.C. Form C 14 C. Auxiliary Contacts 3 APA151 2 1 (Optional) 4 3 2 24 VACrms/DC 6 7 14 5 1 8 9 10 POWER 13 11 12 FAN / DAMPER SHUTDOWN H0269-01 3 APA151 2 1 (Optional) RELEASING DEVICE 4 3 FIRE ALARM CONTROL PANEL EOL 7 14 5 1 6 RELEASING DEVICE 4 3 2 2 24 VACrms/DC 3 APA151 2 1 (Optional) 8 9 10 13 11 12 24 VACrms/DC 5 1 6 7 14 8 9 10 13 11 SPECIFIED BY PANEL MANUFACTURER 12 ALARM INITIATION LOOP H0268-01 NOTE: ABOVE DIAGRAM SHOWS NFPA REQUIRED WIRING OF SUPERVISED SYSTEMS. SCHEMATIC SHOWN BELOW FOR REFERENCE. SUPERVISORY RELAY SUPERVISORY RELAY EOL CONTROL PANEL ALARM RELAY ALARM RELAY SPECIFIED BY PANEL MANUFACTURER HVDS00700 Ordering Information Part No. 2151 B114LP B114LPBT Description Low-profile photoelectric plug-in detector (order the base listed below) 120 VAC detector base 24VAC/DC detector base 3825 Ohio Avenue • St. Charles, IL 60174 Phone: 800-SENSOR2 • Fax: 630-377-6495 www.systemsensor.com ©2012 System Sensor. Product specifications subject to change without notice. Visit systemsensor.com for current product information, including the latest version of this data sheet. HVDS00700 • 1/12