System Sensor 2151 & 2151T - Installation Manual

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D100-101-00 1 I56-2806-005R
2151/2151T Low Profile
Photoelectronic Plug-in
Smoke Detectors
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
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.
The 2151 low-profile photoelectronic detector uses a state-of-the-art optical
sensing chamber. This detector is designed 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 imple-
mented through an optional accessory RA400Z/RA100Z. The alarm can be
reset only by a momentary power interruption. This detector may be tested by
activating the internal reed switch with a magnet.
Refer to the installation instructions for the Plug-in Detector Bases for base se-
lection and wiring instructions. System Sensor has a variety of detector bases
available for this smoke detector, including 2-wire applications with and with-
out relays and/or current limiting resistors, 4-wire and 120VAC applications.
All bases are provided with screw terminals for power, ground, remote an-
nunciator connections and relay contact connections, if applicable. The elec-
trical ratings for each detector-base combination are also included in the base
installation instructions.
NOTE: All wiring must conform to applicable local codes, ordinances, and
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.)
Remove power from initiating-device circuits before installing 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.
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.
When capability is enabled, detectors cannot be removed from the base with-
out 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.
Before testing, notify the proper authorities that the smoke detector system is
undergoing maintenance and will temporarily be out of service. Disable the
zone or system undergoing maintenance to prevent unwanted alarms. Detec-
tors must be tested after installation and as part of periodic maintenance. Test
2151 and 2151T as follows:
NOTE: Before testing the detector, check to ensure the LEDs blink. If they
do not, the detector has lost power (check the wiring), it is defective (return
it for repair), or the detector sensitivity is outside the listed limits.
A. Test Magnet (p/n M02-04-01 or M02-09-00)
1. Place the magnet against the cover in the location designated by the
raised mark to activate the test feature (see Figure 1).
2. The LEDs should latch ON within 5 seconds indicating alarm and an-
nunciating the panel.
B. Test Module (SENS-RDR)
Use the SENS-RDR Sensitivity Reader to measure the sensitivity of the detec-
tors. Please refer to the SENS-RDR instruction manual for operating details.
C. Smoke Entry
The GEMINI model 501 aerosol generator can be used for smoke entry
testing. Set the generator to represent 4%/ft to 5%/ft obscuration as de-
scribed in the GEMINI 501 manual. Using the bowl shaped applicator,
apply aerosol until the panel alarms.
Additionally, canned aerosol simulated smoke (canned smoke agent)
may be used for smoke entry testing of the smoke detector. Tested and
approved aerosol smoke products are:
Home Safeguard Industries 25S
SDi CHEK02 and CHEK06
When used properly, the canned smoke agent will cause the smoke detector
to go into alarm. Refer to the manufacturer’s published instructions for proper
use of the canned smoke agent.
Canned aerosol simulated smoke (canned smoke agent) formulas will vary by
manufacturer. Misuse or overuse of these products may have long term ad-
verse effects on the smoke detector. Consult the canned smoke agent manufac-
turer’s published instructions for any further warnings or caution statements.
D. Direct Heat Method (Hair Dryer of 1000-1500 watts) 2151T only
A hair dryer of 1000-1500 watts should be used to test the thermistors. Di-
rect the heat toward either of the two thermistors, holding the heat source
approximately 12 inches from the detector in order to avoid damaging
the plastic housing. The detector will reset only after it has had sufficient
time to cool. Make sure both thermistors are tested individually.
Notify the proper authorities that the system is back on line.
Detectors that fail these tests should be cleaned as described under MAIN-
TENANCE and retested. If the detectors still fail these tests, they should be
returned for repair.
LED Status
Magnet Test
Test Magnet
Test Magnet
Magnet Test
Cover and
(2151T only)
Smoke detectors are not to be used with detector guards unless the combina-
tion has been evaluated and found suitable for that purpose.
Dust covers are an effective way to limit the entry of dust into smoke detector sens-
ing chambers. However, they may not completely prevent airborne dust particles
from entering the detector. Therefore, System Sensor recommends the removal
of detectors before beginning construction or other dust producing activity.
Be sure to remove the dust covers from any sensors that were left in place dur-
ing construction as part of returning the system to service.
Smoke detectors are not to be used with detector guards unless the combina-
tion has been evaluated and found suitable for that purpose.
D100-101-00 2 I56-2806-005R
©2010 System Sensor
System Sensor warrants its enclosed smoke detector to be free from defects in materials
and workmanship under normal use and service for a period of three years from date
of manufacture. System Sensor makes no other express warranty for this smoke detec-
tor. No agent, representative, dealer, or employee of the Company has the authority to
increase or alter the obligations or limitations of this Warranty. The Company’s obligation
of this Warranty shall be limited to the repair or replacement of any part of the smoke
detector which is found to be defective in materials or workmanship under normal use
and service during the three year period commencing with the date of manufacture.
After phoning System Sensor’s toll free number 800-SENSOR2 (736-7672) for a Return
Authorization number, send defective units postage prepaid to: System Sensor, Repair
Department, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please include a
note describing the malfunction and suspected cause of failure. The Company shall not
be obligated to repair or replace units which are found to be defective because of damage,
unreasonable use, modifications, or alterations occurring after the date of manufacture.
In no case shall the Company be liable for any consequential or incidental damages for
breach of this or any other Warranty, expressed or implied whatsoever, even if the loss
or damage is caused by the Company’s negligence or fault. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation
or exclusion may not apply to you. This Warranty gives you specific legal rights, and you
may also have other rights which vary from state to state.
Please refer to insert for the Limitations of Fire Alarm Systems
Before removing the detector, notify the proper authorities that the smoke
detector system is undergoing maintenance and will be temporarily out of
service. Disable the zone or system undergoing maintenance to prevent un-
wanted alarms.
1. Remove the sensor to be cleaned from the system.
2. Remove the sensor cover by pressing firmly on each of the four removal
tabs that hold the cover in place.
3. Vacuum the screen carefully without removing it.
If further cleaning is required continue with Step 4, otherwise skip to
Step 7.
4. Remove the chamber cover/screen assembly by pulling it straight out.
5. Use a vacuum cleaner or compressed air to remove dust and debris from
the sensing chamber.
6. Reinstall the chamber cover/screen assembly by sliding the edge over the
sensing chamber. Turn until it is firmly in place.
7. Replace the cover using the LEDs to align the cover and then gently
pushing it until it locks into place. Make sure that the thermistors do not
become bent under the cover on 2151T.
8. Reinstall the detector.
9. Test the detector as described in TESTING.
10. Reconnect disabled circuits.
11. Notify the proper authorities that the system is back on line.