Wire connections are made by stripping about 1/4 inch of insulation from the end of the feed wire, inserting the wire into the appropriate terminal, and tightening the screw to secure the wire in place.

Installation

WARNING

Remove power from the control unit or initiating device cir- cuits before installing detectors.

1.Wire the plug-in screw terminal block per Figure 1 and plug the terminal block into the detector.

2.Align the arrows on the detector with the arrows on the mounting bracket.

3.Turn the detector clockwise in the mounting bracket un- til it clicks into place.

4.After all detectors have been installed, apply power to the control unit or initiating device circuits.

5.Test the detector as described in TESTING.

6.Reset the detector at the system control panel.

7.Notify the proper authorities the system is in operation.

CAUTION

Dust covers are an effective way to limit the entry of dust into smoke detector sensing chambers. However, they may not completely prevent airborne dust particles from enter- ing the detector. Therefore, System Sensor recommends the removal of detectors before beginning construction or other dust producing activity. Be sure to remove dust covers from any sensors that were left in place during construction as part of returning the system to service.

Testing

NOTE: Before testing, notify the proper authorities that the smoke detector system is undergoing mainte- nance and will be temporarily out of service. Dis- able the zone or system undergoing maintenance to prevent unwanted alarms.

Detectors must be tested after installation and following periodic maintenance. Test the 2112/24ATR as follows:

A. Test Switch

1.A recessed test switch is located on the detector hous- ing (See Figure 4).

2.Press and hold the recessed test switch with a 0.18 inch maximum diameter tool such as an allen wrench or small screwdriver.

3.The detector’s LED should light within 5 seconds.

B.Test Module (System Sensor Model No. MOD400R). The MOD400R test module can be used with a DMM or analog voltmeter to check the detector sensitivity as de- scribed in the test module’s manual.

C.Smoke Entry Test

Hold a smoldering punk stick or cotton wick at the side of the detector and gently blow smoke through the de- tector until the unit alarms.

D.Direct Heat Method (Hair dryer of 1000-1500 watts) Direct the heat toward either of the side thermistors. Hold the heat source about 12 inches from the detector in order to avoid damage to the plastic. The detector will reset only after it has had sufficient time to cool and the power source has been momentarily interrupted.

Both smoke and heat detection testing are recommended for verifying system protection capability.

A detector that fails to activate with any of the above tests should first be cleaned as outlined in MAINTENANCE. If the detector still fails to activate, return it for repair.

Notify the proper authorities the system is back in operation.

Maintenance

NOTE: Before removing the detector, notify the proper au- thorities that the smoke detector system is under- going maintenance and will be temporarily out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms.

NOTE: Before removing the detector cover, note the posi- tion of the thermistors. Make sure the thermistors are not bent over when the housing is replaced.

1.Remove the detector housing by gently prying the four housing tabs on the bottom of the base with a small- bladed screwdriver and pull the housing from the base. Use caution to avoid damaging the thermistors.

2.Vacuum the screen carefully without removing it.

Figure 4. Top and side views showing position of test switch:

LED

TEST MODULE

RECESSED TEST

SWITCH

SOCKET

 

PUSH RECESSED SWITCH WITH A

0.18″ MAX. DIAMETER TOOL

A78-2564-00

D200-84-00

3

I56-1240-02R

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System Sensor 24ATR specifications Installation, Testing, Maintenance
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24ATR specifications

The System Sensor 24ATR is a reliable and highly advanced smoke detector designed for commercial and industrial applications. This innovative device combines a range of features, technologies, and characteristics that ensure efficient smoke detection, enhancing safety and protection in various environments.

One of the standout features of the 24ATR is its use of dual-sensor technology. This integration of both ionization and photoelectric sensors allows the unit to respond more effectively to different types of fires. Ionization sensors are particularly responsive to flaming fires, while photoelectric sensors excel in detecting smoldering fires. This dual capability enables the 24ATR to provide comprehensive detection, reducing false alarms and improving overall safety.

The System Sensor 24ATR also incorporates advanced signal processing algorithms. These algorithms analyze sensor data in real-time, allowing for quicker and more accurate detection of smoke particles. This feature enhances the unit's ability to discern genuine threats from non-threatening sources like cooking fumes or dust, which are common triggers for nuisance alarms.

Another significant advantage of the 24ATR is its built-in sounder. This sounder emits an audible alarm when smoke is detected, ensuring that occupants are promptly alerted in the event of an emergency. The volume and tone of the sound are adjustable, allowing customization according to specific environmental needs, making it adaptable for various settings.

Moreover, the 24ATR is designed with ease of installation and maintenance in mind. The device is compatible with various mounting options and can easily integrate into existing fire alarm systems. Additionally, the unit's low profile and sleek design make it aesthetically pleasing, ensuring that safety features do not compromise the look of a facility.

The robustness of the System Sensor 24ATR extends to its durability in harsh environments. It is built to withstand a range of temperatures and humidity levels, ensuring reliable performance under different conditions. The detector is also equipped with a sealed housing to prevent dust and dirt intrusion, which can impair sensor functionality.

In summary, the System Sensor 24ATR stands as an exemplary smoke detection solution, featuring dual-sensor technology, advanced signal processing, an integrated sounder, ease of installation, and durable construction. With these attributes, it is an ideal choice for ensuring safety in commercial and industrial environments, providing peace of mind to building owners and occupants alike.
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