1851B SYSTEMSENSOR | Alldatasheet
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if | MODEL IONIZATION arrtar SMOKE DETECTORS FOR a? ie, ) SYSTEMS/RESIDENTIAL (na \\rF) ) D ) | APPLICATIONS ww Eee | 1 | ] a a = ee ., i | | ¢ Compact, Stylish Design | ¢ Stable Unipolar lonization Sensing Chamber | | 4 »») 3-Year Warranty ¢ Directly Interchangeable with Model | 2851B Photoelectronic Detector | | ° Field Proven Performance low voltage installations and | © Unique Unipolar Dual Sensor 120VAC applications —Provides exceptional stability ¢ Visual alarm indication (LED) | —Factory preset at 1.5% nominal ¢ Designed for Direct Surface or | sensitivity Electrical Box Mounting | —Withstands wind gusts up to ¢ Remote LED option (6101 Base only) | 2500 feet-per-minute without false — « Low standby current | ri Mulley * Listed to UL 268 | 2 ConnenEls euiteh ide ranger ¢ Built-in tamper-resistant feature MN LAG ¢ Field adjustable sensitivit Adapter Bases for both 2 and 4/6-wire i y The Model 1851B Ionization Smoke Detectors unique The 18518 Detectors are simple to install, service and unipolar chamber responds quickly and uniformly to the maintain. Using a specially designed tool, maintenance broadest range of fires and can withstand wind gusts up personnel can remove and replace snap-in detectors to 2500 feet-per-minute without false alarming. Because —_ without requiring a ladder. If one type of plug-in unit needs | of its unipolar chamber, the 1851B is approximately two to be replaced or is unsuitable in a given location, it can | times more responsive than most conventional ionization easily be unplugged and replaced by a compatible unit detectors, Therefore, its sensitivity can be set farther from of a different type. These detectors incorporate a built-in | the threshold of alarm. This makes it a more stable detector magnetic reed test switch. The 1851B Detectors are | | that is less prone to false alarms. The sensitivity is preset designed to commercial quality standards and appearance | at the factory, but may be adjusted within prescribed limits and are backed by an exclusive 3-Year Warranty. BRK’s | | in the field, To further improve stability, the 1851B has a Plug-In Series — covering all the bases | | built-in five-second delay feature. | | |
ADAPTER BASE SELECTION GUIDE The 1851B or 2851B Series head mounts to any of the special Adapter Bases listed below. The B10X Series of Adapter Bases is designed for maximum ease of installation. The Detector heads plug in and out with one twist of the hand, APPLICATION MOUNTING. CONTACTS RATINGS /ANNUNCIATORS () re) co FJ Zoo w elo 2 e£/2 |Sal/o}]H#2_8] @) gle es |w | eSo\\ee Ole S]ocSr|xr)/ xr} [zx Slo @)/ see] ae w o )2,/a5| 8 |ahs2/82/82|/5e/S6Sos/5 =| z58| oo 5 2 | Zo] wo raSs|z<|z2| 22/25 G8] Qua | sos] 50 os 2 | ElE8lEe] 5 | E2S=|S2) $2 | So/ Sousa Sou | Sa8| a8 oe = |/U2/F0| o | Fxcx/Sr] Sx | Gs] <S[5 ou] See} avs/ag te = alee] 3 GZOFISE] SE | sc] om jae | 2E2 | a§| sa z3 a wls<] Ww | xZe BRIE eal 4 S| 3 3 zi/c E ava |/6o] 50 pom) rd £ z Ble |a2/o}Pz"s) S| 5/6 ES |}o =| 339) %z 5 cad ira o=2| = NOTES: B101B x x x 40-29 | 7-300" | 10yA av .n beiaed Bases and voc mA sec | P/N 669-00] 92. Current MUST be limited to this range a 3. Mount to 4-ineh 81028 x | x x [x || & 20.29 NA [unetion box only with voc N/A BRK Adapter Bracket (A10-14.01), See Jey 4, Al ii Brose ia ee |_| . [| * soe N/A " eo Annunciator when specilying 2-wire a B106BR | X x x x 20:29 | 21-42 | 5yA NIA voc _| mA_| sec HOW TO ORDER Model 1851B — lonization Detector. Must be mounted to one of the B10X Series Bases listed below. O om Model 2851B — Photoelectronic Detector. Must be mounted to one of the B10X . { tl Wine ij Series Bases listed below. ll HY {I Unipolar ionize. Model 2851BTH — Same as Model 2851B above, but with a 135° fixed temp. Hale tion chamber heat sensor. CTT ll provides stable B101B — 2-wire Adapter Base used with current sensing initiating device cir- 4 Whee ge, response to a cuits, screw terminals. Current must be limited by control panel. 1 ee It. | broad range of ay " il Nea: fires! B101BR — Same as B101B Adapter Base, but with current limiting resistor. een f a, ee B102B — 4 or 6-wire 24VDC Adapter Base with screw terminals. Listed as an Ay Le zy —~ — 4 Independent Releasing Device. (See Chart above for relay contacts available.) 5 etd B104B — Independent Releasing Device Adapter Base powered directly trom Te © 120VAC, screw terminals. (See Chart above for relay contacts available.) B106B — 2-wire Adapter Base with screw terminals. (See Chart above for relay contacts available.) GENERAL SPECIFICATIONS estate betohiy page beetle i eine and current limiting resistor. Operating Voltage/Current Range — See Chart ( or Sere eeriences Avena Ie) above AT7-716-02 — End of Line Relay Module, 24VDC. For use with 8102B Base only. Sein hee 156-210-XX — Applications Manual for System Smoke Detectors. Sensor — Unipolar, Dual Chamber MO2-04-00 — Test Magnet for both the 1851B and 2851B Detectors, Temperature Range — 0°C to 38°C, 32°F to 10°F -_ (bettors Topted to 10°F) TM80 — Test Meter for the 1851B and 2851B Detectors. jumidity Range — 10% to 85% TM90 — Digital Diagnostic Smoke Detector Analyzer for 1851B and 2851B Weight — 16 02, (454 gm) Detectors, ome XP-4 — Three 6-loot Extension Poles to be used with the XR-4 below. Hex Switched Power: 30W (00) or SOVA (AC) XR-4 — Removal and Replacing Tool for 1851B and 28518 Detectors MRE Beg eee eee ORS 669-00 — Rectangular Remote Alarm Lamp (LED) Assembly, annunciates alarms Max. Switched Voltage: from 1851B and 2851B Detectors, (B101B Base only.) Form A: 30V (AC or DC) Farm C: YO0V (DC) or 25 (AC RMS) *Not available on B101B and B101BR Bases Distributed by: O BRK ELECTRONICS System Sensor Division
780 McClure Road * Aurora, Illinois 60504
C1851B 12/85 Printed in US.A.