System Sensor DH400ACDCP Sensitivity Tests 3.1 MOD400R Sensitivity Test, Air Filters, Photo Heads

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Figure 12. RTS451/RTS451KEY test coil installation:

TEST COIL

DETECTOR

HEAD

H0245-00

the RTS451/RTS451KEY manual. The DH400ACDCP duct detector can be reset by the RTS451/RTS451KEY. If a sys- tem control panel is used, the panel itself may also require resetting.

To install the RTS451/RTS451KEY, connect the device as shown in Figure 8; wire runs must be limited to 25 ohms or less per interconnecting wire. Place the coil in the detector housing with the arrow facing up and pointing toward the detector as in Figure 12. Attach the coil leads to the hous- ing terminals as shown; polarity is not important. Firmly screw the bracket in place over the test coil.

[6.2.3] Sensitivity Tests

[6.2.3.1] MOD400R Sensitivity Test

After verification of alarm capability, use the MOD400R test module with a voltmeter to check detector sensitivity as described in the test module’s manual. The housing cover must be removed to perform this test.

If test module readings indicate that the detector head is outside of the acceptable range that is printed on the back of the detector head, the detector head requires cleaning per Section [7].

[6.2.3.2] R59-18-00 CALIBRATED TEST CARD (photo- electronic units only)

After verification of alarm capability, the R59-18-00 test card may be used to verify correct sensitivity of the de- tector head.

1.Remove the duct housing cover.

2.Remove the detector head from the housing as shown in Figure 11.

3.Remove the detector head cover by placing a small blade screwdriver in the side slot of the detector cover, twisting it slightly until the cover can be turned counter- clockwise.

4.Carefully reinsert the detector head into the duct hous-

ing and wait 50 seconds for power up. Do not hold the swirl chamber to twist the detector head.

5.Insert the NO ALARM end of the test card into the test slot (see Figure 13) and slide it counterclockwise until it stops. The detector should not alarm after 20 seconds.

6.Remove the card and then insert the ALARM end into the slot and slide it counterclockwise until it stops. The LEDs should latch on within 20 seconds. Remove card and reset detector.

7.Put the cover back by gently rotating it clockwise until it locks in place. Secure the duct housing cover using the 4 cover screws.

[7]Detector Cleaning Procedures

Notify the proper authorities that the smoke detector sys- tem is undergoing maintenance, and that the system will be temporarily out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms and possible dispatch of the fire department.

[7.1] Air Filters

1.Turn off power to the system.

2.Remove and inspect the sampling tube filters.

3.If the filters are heavily coated with dirt, replace them with new filters. If they are not heavily coated, use a vacuum cleaner or compressed air nozzle to remove dust, then reinstall the filters.

[7.2] Photo Heads

1.Remove the detector cover by inserting a small bladed screwdriver into the slot located 90 degrees from the field test port. Rotate the cover counterclockwise to re- move (see Figure 13).

2.Lift the screen from the photo chamber. Vacuum the screen and cover before using clean, compressed air to loosen and blow out any remaining debris. Replacement screens (RS24) are available.

D400-13-00

10

I56-555-09R

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Contents List of Tables and Figures Before InstallingTable of Contents General DescriptionLimitations Of Duct Detectors Contents Of The Duct Detector KitInstallation Sequence StepInlet tubes required for different duct widths Install The InletDrill The Mounting Holes Outside Duct Width Inlet Tube RequiredTube mounting configurations with varying air flow direction Air duct detector inlet sampling tubeWiring Instructions Install the inlet tube as followsField Wiring Installation Guidelines Modifications Of Inlet Sampling TubesFor wiring Alarm RED Common Duct Detector Maintenance And Test Procedures Install The FiltersInstall The Cover Perform Detector CheckSmoke Entry Tests Air Flow Filter ReplacementAlarm Tests 2.1 M02-04-00 Magnet Test Smoke ResponseAir Filters Detector Cleaning ProceduresSensitivity Tests 3.1 MOD400R Sensitivity Test Photo HeadsReinstallation Photo head exploded viewAccessories Test FeaturesMechanical Specifications DescriptionElectrical Specifications Electrical RatingsD400-13-00 D400-13-00 Test Results and Maintenance Data Detector Test LOG

DH400ACDCP specifications

The System Sensor DH400ACDCP is a cutting-edge addressable smoke and heat detector specifically designed for commercial and industrial applications. Its advanced detection capabilities ensure a high level of safety in various environments, making it an essential component of modern fire alarm systems.

One of the standout features of the DH400ACDCP is its dual-sensing technology. This device combines both smoke and heat detection in a single unit, allowing for a more comprehensive approach to fire safety. The smoke detection is performed using a photoelectric sensor, which effectively identifies smoldering fires that produce a large amount of smoke, while the heat detector is designed to respond to rapid temperature increases and fixed temperature thresholds. This dual functionality ensures early notification in the event of a fire, enabling timely response.

The DH400ACDCP also incorporates System Sensor’s innovative analytics technology. This feature utilizes advanced algorithms to minimize false alarms while maintaining sensitivity to actual fire threats. By analyzing environmental conditions and historical data, the detector can distinguish between normal activities and potential fire indicators, thus reducing unnecessary interruptions.

In terms of installation and maintenance, the DH400ACDCP is designed for ease of use. It features a robust addressable communication system, which allows for straightforward integration into existing fire alarm panels. The unit can be easily configured through the panel, providing flexibility in customizing notifications and response protocols. Its durable construction ensures reliability, while routine diagnostics capabilities help monitor device health and facilitate maintenance efforts.

Another significant characteristic of the DH400ACDCP is its compatibility with system monitoring and control platforms. The detector can report its status and any potential issues directly to centralized monitoring stations, enabling rapid response to emergencies or maintenance needs. By integrating with modern building management systems, the DH400ACDCP contributes to an overall intelligent safety infrastructure.

Overall, the System Sensor DH400ACDCP offers a cutting-edge solution for fire safety in various environments, combining advanced detection technology, ease of integration, and robust performance. With its focus on minimizing false alarms while ensuring reliable detection, the DH400ACDCP stands as a critical asset for maintaining safety in commercial and industrial spaces.
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