D100-101-00
1
I56-2806-003R
2151/2151T Low Profile
Photoelectronic Plug-in
Smoke Detectors
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
Before Installing
Please thoroughly read the System Sensor manual A05-
1003,
Applications Guide for System Smoke Detectors
,
which provides detailed information on detector spacing,
placement, zoning, wiring, and special applications. Copies
of this manual are available from System Sensor.
NOTICE:
This manual should be left with the owner/user
of this equipment.
IMPORTANT:
The detector must be tested and maintained
regularly following NFPA 72 requirements. The detector
should be cleaned at least once a year.
General Description
The 2151 low-profile photoelectronic detector uses a state-
of-the-art optical sensing chamber. This detector is de-
signed to provide open area protection and to be used with
compatible UL listed control panels only. The capability of
plugging this detector into a variety of special bases makes
it more versatile than equivalent direct-wired models.
Two LEDs on each detector provide local 360° visible alarm
indication. They flash every five seconds indicating that
power is applied and the detector is working properly. The
LEDs latch on in alarm. LEDs will be off when a trouble
condition exists indicating that the detector sensitivity is
outside the listed limit. Remote LED annunciator capability
is standard and may be implemented through an optional
accessory RA400Z. The alarm can be reset only by a mo-
mentary power interruption. This detector may be tested
by activating the internal reed switch with a magnet.
Base Selection And Wiring Guide
Refer to the installation instructions for the Plug-in Detec-
tor Bases for base selection and wiring instructions. Sys-
tem Sensor has a variety of detector bases available for
this smoke detector, including 2-wire applications with and
without relays and/or current limiting resistors, 4-wire and
120VAC applications.
Specifications
Size
Height:
2.0 inches (51 mm) installed in B401 Base
Diameter:
4.1 inches (104 mm) installed in B401 Base
6.1 inches (155 mm) installed in B110LP Base
Weight:
3.1 oz. (88 g)
Operating Temperature Range:
0°C to 49°C (32°F to 120°F); 2151,0°C to 38°C (32°F to 100°F); 2151T
Operating Humidity Range:
10% to 93% Relative Humidity noncondensing
Heat Sensor (2151T only):
135°F Fixed Temperature Electronic Thermistor
Operating Voltage:
8.5 to 35VDC
Standby Current:
120µA
Latching Alarm:
Reset by momentary power interruption.
All bases are provided with screw terminals for power,
ground, remote annunciator connections and relay contact
connections, if applicable. The electrical ratings for each
detector-base combination are also included in the base in-
stallation instructions.
Installation
NOTE:
All wiring must conform to applicable local codes,
ordinances, and regulations.
NOTE:
Verify that all detector bases are installed, that
the initiating-device circuits have been tested, and that
the wiring is correct. (Refer to detector base manual for
testing procedure.)
WARNING
Remove power from initiating-device circuits before install-
ing detectors.
1. Install detectors:
a. Place the detector into the detector base.
b. Turn the detector clockwise until the detector drops
into place.
c. Continue turning detector clockwise to lock it in place.
2. Tamper Resistance: The detector bases can be made
tamper resistant. When capability is enabled, detectors
cannot be removed from the base without the use of a
tool. See the detector base installation manual of the
detector base for details in using this capability.
3. After all detectors have been installed, apply power to
the control unit.
4. Test the detector using the magnet as described under
TESTING.
5. Reset the detector at the system control panel.
6. Notify the proper authorities that the system is back on line.
I56-2806-00
3R
