vi LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook
The settings of a compliant system should be recorded, as it is possible by
changing certain programmable functions to make the system non-compliant. If
functions are changed, it is recommended that the system is retested if
continuing compliance is in any doubt.
Note: For EN 54-20 compliant installations the detector requires that the flow
thresholds be set manually to ± 6% of the nominal value, after the FastLearn
phase is completed. For example, if the flow rate is 64% after the completion of
the FastLearn period, the user must manually set the low flow threshold to 58%
and the high flow threshold to 70%.
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