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Detector Sensitivity Settings
40 AFP-300/AFP-400 Programming PN 50259:C1 06/19/97
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Using alarm sensitivities below 0.50%/ft obscuration requires a 90-day test to ensure
that the detector environment is suitable for the higher sensitivity setting. To meet
Notifier and Underwriters Laboratory requirements, test each detector planned to
operate below 0.50%/ft obscuration as follows:
4. Set the detector as follows:
5. Operate detectors continuously for 90 days with all environmental factors—
including temperature, humidity, air flow, occupancy, etc.—similar to the intended
application for the detectors. Record all events for each tested detector with an
electronic history file or a printout.
6. At the end of the 90 day test: An authorized Notifier representative, or an end user
trained by an authorized Notifier representative must inspect the results of the test.
If the test results show no alarms or Pre-Alarms for the tested detectors, reprogram
the fire alarm system to set the alarm sensitivity to the more sensitive Pre-Alarm
level.
Step Action
1 Initially set to the 0.50%/ft obscuration alarm level.
2 Set the Pre-Alarm level to the desired final alarm sensitivity.
3 Set the Pre-Alarm to Alert mode (non-latching).
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