Figure 7. Testing detector alarm:

DETECTOR

HEAD

TEST

TEST

MAGNET

LOCATOR

PAINTED SIDE

 

TOWARD HOUSING

Figure 8. Detector head removal:

DETECTOR

HEAD

TWIST

COUNTERCLOCKWISE

TO REMOVE

DUCT

HOUSING

RESET

LOCATOR

DUCT

HOUSING

TWIST

CLOCKWISE

TO INSTALL

H0243-00

H0244-00

Step 8. Install the Cover

Install the cover using the four screws. Be certain filters are installed as specified in Step 6. Make sure that the cover fits into the base groove and that all gaskets are in their proper positions. Tighten the four cover screws to 10 in-lbs.

Step 9. Perform the Final System Check

Position the test magnet as shown in Figure 7. The LEDs on the detector should light. Any accessory LED(s) should also light and the system control panel should indicate an alarm condition.

Periodic Maintenance Requirements

Air duct smoke detectors should be maintained at least once a year – more often if the detector heads become obviously dirty. The detectors must also be cleaned imme- diately after a fire. Failure to properly maintain air duct smoke detectors may cause unnecessary false alarms.

Figure 9. RTS451/RTS451KEY Test Coil Installation:

It is recommended that a permanent Detector Test Log be set up and maintained, with a record for each individual smoke detector in each building. Each detector should be clearly described, with information on the type of detector, the model number, the serial number (if any), the location, and the type of environment. Data entries should include test dates, type of test mode, test results, maintenance, and comments. A Detector Test Log is included at the end of this manual.

Recommended Detector Maintenance Procedure NOTE: Notify the proper authorities that the smoke detec-

tor system is undergoing maintenance and will be temporarily out of service. Disable the zone or sys- tem undergoing maintenance to prevent unwanted alarms and possible dispatch of the fire depart- ment.

TEST COIL

DETECTOR

HEAD

H0245-0

D500-07-00

8

I56-432-11R

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System Sensor DH500ACDC specifications Install the Cover, Perform the Final System Check, Periodic Maintenance Requirements
Page 7 Page 9

DH500ACDC specifications

The System Sensor DH500ACDC is a versatile and reliable heat detector that has gained a reputation for its advanced technology and robust features, making it an ideal choice for both commercial and residential fire safety applications. This heat detector is designed to enhance fire detection systems by providing accurate temperature monitoring and fast response times, thereby ensuring optimal safety for buildings and their occupants.

One of the standout features of the DH500ACDC is its dual power source capability, allowing it to operate seamlessly on both AC and DC power. This flexibility ensures that the detector continues to function efficiently even during power outages, making it an essential component of any comprehensive fire safety system. The ability to work with varied power sources maximizes its usability across different environments.

Equipped with a sophisticated thermal sensing element, the DH500ACDC is capable of detecting high temperatures or rapid rises in temperature. Its fixed temperature setting, combined with its rate of rise detection feature, enables it to quickly identify potential fire hazards. This dual mechanism significantly reduces the likelihood of false alarms while maintaining sensitivity to genuine threats.

The device is built for durability and reliability. Featuring a rugged construction, it is designed to withstand harsh environmental conditions, making it suitable for industrial settings, warehouses, and other challenging environments. Additionally, the detector's low-profile design allows for easy installation and minimal aesthetic disruption in any setting.

Another noteworthy characteristic of the DH500ACDC is its compatibility with various fire alarm control panels. This interoperability facilitates seamless integration into existing systems, enhancing overall functionality without the need for extensive modifications. This feature is particularly beneficial for organizations looking to upgrade their fire safety infrastructure.

Moreover, the DH500ACDC has undergone rigorous testing and complies with international standards, ensuring quality and performance that fire safety professionals can trust. Its comprehensive range of features, alongside its advanced technologies, make it a top choice for those seeking to enhance their fire detection capabilities.

In conclusion, the System Sensor DH500ACDC represents a significant advancement in heat detection technology. Its dual power source capability, sophisticated sensing mechanisms, rugged construction, and compatibility with fire alarm systems make it an indispensable tool in safeguarding lives and property against the dangers of fire. This detector embodies the commitment to safety that System Sensor is known for, providing peace of mind to users in various applications.
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