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DESCRIPTION
The System Sensor 2151 low profile photoelectronic
smoke detector is specifically designed to meet the perfor
-
mance requirements of fire detection/alarm systems. The
2151 detector uses a state-of-the-art optical sensing chamber
and is designed so that LED failure will not cause an alarm.
The detector is designed to provide open area detection, and
when installedin atwo-wire base,is compatiblewith FCIfire
alarm control panels. The detector’s operation and sensitiv
-
ity can be tested in place.
The 2151 detector is of plug-in construction and plugs into
the same base as the 1151 ionization smoke detector, mak
-
ing both models interchangeable. Bases are available for
two-wire, four-wire, and 120 VAC four-wire operation, and
also with an audible sounder.
Two visible LEDs on each detector flash every ten seconds
indicating that power is being applied to the detector. The
LEDs light steadily when the detector is in alarm. A remote
LED annunciator is available as an optional accessory.
The 2151 isUL Listedfor mounting inside ducts upto a ve-
locity of 3,000 FPM.
Functional testing is performed by placing a test magnet
against the cover. The LED on the detector should light
within 30 seconds.
Field metering of detector sensitivity may be performed
with theaid ofavoltmeter andTest Kit,Part No.MOD 400R.
APPROVALS
TECHNICAL SPECIFICATIONS
Sensitivity 3.0 %/ft. (nominal)
Operating voltage 8.5 - 35 VDC (24 VDC nominal)
Standby current 120 uA maximum
Operating temperature 32
o
to 120
o
F(0
o
to 49
o
C)
Operating humidity 10 % - 93 % relative humidity
Air velocity 3,000 feet per minute maximum
Construction Off-white flame retardant plastic
Diameter 6.2 inches (15.5 cm) (flanged base)
Height 1.7 inches (4.2 cm)
Weight 3.6 oz. (104 g)
2151
SYSTEM SENSOR
LOW PROFILE, PHOTOELECTRONIC,
PLUG-IN SMOKE DETECTOR
9020-0583/Ver. 1.1
16 Southwest Park, Westwood, MA 02090 USA TEL: (781) 471-3000 FAX: (781) 471-3099
FEATURES
• Low Profile Construction
• Easy Plug-in of the Head to Base
• Tamper-resistant Feature
• Test Switch
• 360
o
View Angle of Alarm LEDs
• Compatible with FCI Control Panels
• Audible Sounder Base (Optional)
• Field Metering of Detector Sensitivity
•
Removable Insect Screen and Cover
for Field Cleaning
•
Insect-resistant Screening (.020"/.508
mm Openings)
An ISO 9001 Certified Company