2151
SYSTEM SENSOR
LOW PROFILE, PHOTOELECTRONIC,
PLUG-IN SMOKE DETECTOR
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 installed in a two-wire base, is compatible with FCI fire
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 is ULListed for mounting inside ducts up to 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.
FEATURES
• Low Profile Construction
• Easy Plug-in of the Head to Base
• Tamper-resistant Feature
• Test Switch
o
Field metering of detector sensitivity may be performed
with theaid of avoltmeterandTest Kit, PartNo. MOD400R.
• 360 View Angle of Alarm LEDs
• Compatible with FCI Control Panels
• Audible Sounder Base (Optional)
• Field Metering of Detector Sensitivity
APPROVALS
• Removable Insect Screen and Cover
for Field Cleaning
• Insect-resistant Screening (.020"/.508
mm Openings)
TECHNICAL SPECIFICATIONS
3.0 %/ft. (nominal)
Sensitivity
Operating voltage
Standby current
Operating temperature
Operating humidity
Air velocity
8.5 - 35 VDC (24 VDC nominal)
120 uA maximum
32o to 120o F (0o to 49o C)
10 % - 93 % relative humidity
3,000 feet per minute maximum
Off-white flame retardant plastic
6.2 inches (15.5 cm) (flanged base)
1.7 inches (4.2 cm)
Construction
Diameter
Height
Weight
3.6 oz. (104 g)
16 Southwest Park, Westwood, MA 02090 USA TEL: (781) 471-3000 FAX: (781) 471-3099
An ISO 9001 Certified Company
9020-0583/Ver. 1.1
|