Testing

Before testing, notify the proper authorities that the smoke detector system is undergoing maintenance and will tem- porarily be out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms.

Detectors must be tested after installation and periodic maintenance. To test the 2451:

NOTE: Before testing the detector, check to ensure that the LEDs are blinking. If they are not, the detector has lost power (check the wiring) or it is defective (return for repair).

A. Test Magnet (System Sensor model no. M02-04-00)

1.Place the magnet against the cover opposite the test module slot to activate the test feature (see Figure 1).

2.The LEDs should latch on within 5 seconds indicating alarm and annunciating the panel.

B.Calibrated Test Card (System Sensor no. R59-18-00)

1.Remove the detector cover by placing a small bladed screwdriver in the side slot of the detector cover, twisting it slightly until the cover can be turned counterclockwise for removal.

2.Insert the NO ALARM end of the test card fully into the test slot (see Figure 2) then slide it counterclock- wise until it stops.

3.Wait for at least 20 seconds. The detector should NOT alarm.

4.Remove the test card by sliding it clockwise before removing, then insert the ALARM end.

5.The LEDs should latch on within 20 seconds indicat- ing alarm and annunciating the panel.

6.Put the cover back by gently rotating it clockwise until it locks in place.

C.Test Module (System Sensor no. MOD400R)

The MOD400R is used with your DMM or voltmeter to check the detector sensitivity as described in the MOD400R’s manual.

D.Aerosol Generator (Gemini 501)

Set the generator to represent 4% to 5%/Ft. obscuration as described in the Gemini 501 Manual. Using the bowl shaped applicator, apply aerosol until the unit alarms.

E. Direct Heat Test (2451TH only)

To test the bi-metallic thermal collector, aim a heat source, such as a low powered heat gun or blow dryer, across the detector. Hold the heat source about 12 inches (30 cm) from the detector to avoid damaging the plastic.

When the temperature rises to greater than 135°F (57°C), the detector should latch into the alarm. The bi-metallic collector automatically resets after the test.

Notify the proper authorities that the detection system is back on line.

Detectors that fail these tests should be cleaned as described under MAINTENANCE and retested. If the detectors still fail these tests they should be returned for repair.

Figure 2:

REMOVABLE HEAD COVER

TEST SLOT

CLEANABLE SCREEN

P/N RS24 (W/O THERMAL)

HEAD COVER

REMOVAL SLOT

VANED CHAMBER

C0722-00

D400-02-01

3

I56-277-10R

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System Sensor 2451, 2451TH specifications Testing
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2451TH, 2451, 2451TH specifications

The System Sensor 2451TH and 2451 model series represent a significant advancement in the realm of smoke detection technology. Designed with an emphasis on both reliability and performance, these devices are a staple in the monitoring of environment safety in commercial and industrial settings.

One of the main features of the 2451TH model is its dual sensitivity smoke detection capability. The device utilizes both photoelectric and ionization sensing technologies, allowing it to accurately detect a wide range of smoke particles from both fast-flaming and smoldering fires. This dual approach enhances its ability to respond quickly and effectively in diverse fire scenarios, ensuring optimal safety.

In addition to smoke detection, the 2451TH is equipped with a built-in heat sensor that significantly increases its performance when dealing with fire-related incidents. This feature allows the system to not only detect smoke but also rising temperatures in its environment, ensuring rapid alerting before potential threats escalate.

Both the 2451 and 2451TH models are designed to incorporate advanced communication capabilities. They can seamlessly integrate into alarm systems, providing alerts and status updates directly to central monitoring stations. This technology ensures that response teams can act swiftly and as required.

The 2451 series also stands out due to its user-centric design. Installation and maintenance are simplified through features like a removable cover for easy access, as well as a range of compatibility with different mounting options. The devices are also equipped with intelligent software that helps reduce false alarms while maintaining reliability, making them ideal for locations where nuisance alarms could lead to operational difficulties.

Furthermore, the 2451 and 2451TH models are compliant with numerous safety regulations, which bolsters their credibility. They are suitable for a variety of applications, ranging from educational facilities, healthcare institutions, to large corporate offices.

In summary, the System Sensor 2451TH and 2451 smoke detectors are defined by their advanced smoke and heat detection capabilities, user-friendly installation features, and robust communication technologies. These characteristics make them essential tools for fire safety, safeguarding people and property through their innovative design and reliable performance. The continuous improvements and updates to the technology ensure that they remain at the forefront of fire detection solutions.
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