What is the best procedure for testing System Sensor duct-mounted smoke detectors?
There are four simple steps to test System Sensor’s duct-mounted smoke detectors: 1. Verify the detector is installed per NFPA 72 guidelines and is in accordance with the manufacturer’s installation instructions. 2. Employ the detector’s built-in test feature, such as the test magnet or accessory test switch. These features are designed to meet NFPA and Underwriters Laboratories functional test requirements that ensure the detectors are operable and will respond to minimum smoke requirements. 3. Measure the pressure differential across the sampling tubes (exhaust and intake) with a manometer to ensure the detector will respond to smoke in the duct airflow. This is the manufacturer’s acceptable test. 4. Apply smoke directly to the detector head to initiate an alarm. The sampling tubes may need to be blocked off for this test and then reopened afterwards.
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