SYSTEM SENSOR 2351BR Intelligent Photoelectric Smoke Sensor with Remote Instructions

3825 Ohio Avenue, St. Charles, Illinois 60174
800/736-7672, FAX: 630/377-6495
www.systemsensor.com
INSTALLATION AND MAINTENANCE INSTRUCTIONS

2351BR and 2351BR-IV
Intelligent Photoelectric Smoke Sensor with Remote Test Capability in Duct Applications

SPECIFICATIONS

green LED blink on communication)
Maximum Alarm Current:| 2 mA @ 24 VDC (one communication every 5 seconds with red LED solid on)
Maximum Current:| 4.5 mA @ 24 VDC (one communication every 5 seconds with amber LED solid on)
Operating Humidity Range:| 10% to 93% Relative Humidity, Non-condensing
Operating Temperature Range:| 32°F to 122°F (0°C to 50°C), -4°F to 158°F (-20°C to 70°C) in duct applications
Air Velocity:| 0 to 4000 ft./min. (0 to 1219.2 m/min.)
Height:| 2.0˝ (51 mm) installed in B300-6 Base
Diameter:| 6.1˝ (155 mm) installed in B300-6 Base; 4.1˝ (104 mm) installed in B501 Base
Weight:| 5.2 oz. (147 g)
Isolator Load Rating:| 0.0063*

*Please refer to your isolator base/module manual for isolator calculation instructions.
UL268A listed for Duct Applications This sensor must be installed in compliance with the control panel system installation manual. The installation must meet the requirements of the Authority Having Jurisdiction (AHJ). Sensors offer maximum performance when installed in compliance with the National Fire Protection Association (NFPA); see NFPA 72.

GENERAL DESCRIPTION

Models 2351BR and 2351BR-IV are plug-in type smoke sensors that combines a photoelectronic sensing chamber with addressable-analog communications. When used in duct applications with a DNR(W), testing can be done remotely using approved System Sen sor test accessories, eliminating the need for a test coil. The sensors transmit an analog representation of smoke density over a communication line to a control panel. Rotary dial switches are provided for setting the sensor’s address.

FIGURE 1. ROTARY ADDRESS SWITCHES

C0162-00

Two LEDs on the sensor are controlled by the panel to indicate sensor status. An output is provided for connection to an optional remote LED annunciator (P/N RA100Z). Note: Only System Sensor approved accessories may be used with the 2351BR and 2351BR-IV.
System Sensor panels offer different features sets across different models. As a result, certain features of the photoelectric sensors may be available on some control panels, but not on others. 2351BR and 2351BR-IV support Advanced Protocol and CLIP (Classic Loop Interface Protocol) mode. The possible features available if supported by the control panel are:

1. The sensor’s LEDs can operate in three ways—on, off, and blinking–and they can be set to red, green, or amber. This is controlled by the panel.
2. The r emote output may be synchronized to the LED operation or con – trolled independent of the LEDs.
3. De vices are point addressable up to 159 addresses.

Please refer to the operation manual for the UL listed control panel for specific operation. The 2351BR and 2351BR-IV require compatible addressable communications to function properly. Connect these sensors to listed- compatible control panels only.

SPACING

System Sensor recommends spacing sensors in compliance with NFPA 72. In low air flow applications with smooth ceilings, space sensors 30 feet apart (9.1 m). For specific information regarding sensor spacing, placement, and special applications, refer to NFPA 72 or the System Smoke Detector Application Guide, available from System Sensor.
Duct Applications: 2351BR and 2351BR-IV are listed for use in ducts. See Duct Smoke Detectors Applications Guide HVAG53 for details on pendant mount applications. NOTE: 2351BR and 2351BR-IV are also listed for use inside
DNR(W) duct smoke detectors.

WIRING GUIDE
All wiring must be installed in compliance with the National Electrical Code, applicable local codes, and any special requirements of the Authority Having Jurisdiction. Proper wire gauges should be used. The installation wires should be color-coded to limit wiring mistakes and ease system troubleshooting. Improper connections will prevent a system from responding properly in the event of a fire.

Remove power from the communication line before installing sensors.

1. Wire the sensor base (supplied separately) per the wiring diagram, Figure 2.
2. Set the desired address on the sensor address switches, see Figure 1.
3. Install the sensor into the sensor base. Push the sensor into the base while turning it clockwise to secure it in place.
4. After all sensors have been installed, apply power to the control panel and activate the communication line.
5. Test the sensor(s) as described in the TESTING section of this manual.

CAUTION

Dust covers provide limited protection against airborne dust particles during shipping. Dust covers must be removed before the sensors can sense smoke. Remove sensors prior to heavy remodeling or construction.

FIGURE 2. WIRING DIAGRAM
CAUTION: Do not loop wire under terminal 1 or 2. Break wire run to supervise connections.

TAMPER-RESISTANCE

Models 2351BR and 2351BR-IV include a tamper-resistant capability that prevents their removal from the base without the use of a tool. Refer to the base manual for details on making use of this capability.

TESTING

Before testing, notify the proper authorities that the system is undergoing maintenance, and will temporarily be out of service. Disable the system to prevent unwanted alarms.
All sensors must be tested after installation and periodically thereafter. Test-ing methods must satisfy the Authority Having Jurisdiction (AHJ). Sensors offer maximum performance when tested and maintained in compliance with NFPA 72.
The sensor can be tested in the following ways:
A. Functional: Magnet Test (P/N MO2-04-01 or MO2-09-00)
This sensor can be functionally tested with a test magnet. The test magnet electronically simulates smoke in the sensing chamber, testing the sensor electronics and connections to the control panel. 1. Hold the test magnet in the magnet test area as shown in Figure 3. 2. The sensor should alarm the panel. Two LEDs on the sensor are controlled by the panel to indicate sensor status. Coded signals, transmitted from the panel, can cause the LEDs to blink, latch on, or latch oft Refer to the control panel technical documen- tation for sensor LED status operation and expected delay to alarm.
B. Smoke Entry
Sensitivity readings are available through the FACP. Refer to the manufac- turer’s published instructions for proper use. Additionally, canned aerosol simulated smoke (canned smoke agent) may be used for smoke entry testing of the smoke detector. Tested and ap-proved aerosol smoke products are:

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.

CAUTION
Canned aerosol simulated smoke (canned smoke agent) formulas will vary by manufacturer. Misuse or overuse of these products may have long term adverse effects on the smoke detector. Consult the canned smoke agent manufacturer’s published instructions for any further warnings or caution statements.

C. Remote Test.
2351BR and 2351BR-IV can be remotely tested using the RTS151 or RTS151KEY test accessories. Refer to the DNR(W) manual for wiring dia-grams. Maximum test response time may be up to two communications from the panel.
A sensor that fails any of these tests may need to be cleaned as described under CLEANING, and retested. When testing is complete, restore the system to normal operation and notify the proper authorities that the system is back in operation.

CLEANING

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 push-ing it until it locks into place.
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.

SPECIAL NOTE REGARDING SMOKE DETECTOR GUARDS
Smoke detectors are not to be used with detector guards unless the combina- tion has been evaluated and found suitable for that purpose.
FIGURE 3. FEATURES OF THE PHOTO DETECTOR

FIGURE 4. CLEANING THE PHOTO DETECTOR

SPECIAL APPLICATION

When configured at the fire alarm control panel, this detector is capable of operating in a special application mode such that it has a higher sensitivity than is normally allowed by UL 268 for areas where early warning is important. In this mode, the detector does not comply with the Cooking Nuisance Smoke Test. Detectors (Sampling ports) set to the special application mode are not suitable for use in areas where cooking appliances may be used. If cooking appliances are used within the protected space, a normal application detector or normal application mode must be used for that area.
Special application mode is not for general use and the detector may be more prone to false alarms if used in unsuitable environments. While no list is all-inclusive, some examples of unsuitable environments for special application mode are areas with airborne particulate or aerosols including sawing, drilling, and grinding operations, textile or agricultural processing, or areas with engines that are not vented to the outside. A complete list of aerosol and particulate sources is available in the Annex of NFPA 72. Suitable environments for special application mode could include early warn- ing for hospitals, museums, assisted living and other areas that do not have airborne particulate or aerosols.
Refer to the fire alarm control panel documentation for information on how to configure the detector for special application mode.

FCC STATEMENT
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to which the receiver is con- nected.
– Consult the dealer or an experienced radio/TV technician for help.

DEVICE AND SYSTEM SECURITY

Before installing this product ensure that the tamper seal on the packaging is present and unbroken and the product has not been tampered with since leaving the factory. Do not install this product if there are any indications of tampering. If there are any signs of tampering the product should be returned to the point of purchase. It is the responsibility of the system owner to ensure that all system components, i.e. devices, panels, wiring etc., are adequately protected to avoid tampering of the system that could result in information disclosure, spoofing, and integrity violation.

SUPPLEMENTAL INFORMATION
For Limitations of Fire Alarm Systems, please go to:
http://www.systemsensor.com/en-us/Documents/I56-1558.pdf

Limitations of Fire Alarm Systems
System Sensor® is a registered trademark of Honeywell International, Inc. Testifire® is a registrered trademark of SDi, LLC.
I56-6544-002
©2020 System Sensor. 10/10/2020
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References

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