Edwards LaserSense HSSD-2

Chapter 3: Programming the unit
LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 47
FastLearn ON
Yes/No - Address 001-127: Setting this function to Yes will start a FastLearn at
any time. The bar graph display on the front of the detector will show a rolling
segment display on the front panel for the 15 minutes that it takes to complete.
Note: If the detector is in FastLearn Mode, do not set this function to “No.” If you
set this function to “No”, the FastLearn process will stop. Kidde Products Ltd.
does not recommend or support the deactivation of the FastLearn function.
The text display will initially display the legend FastLearn 15 and will then count
down each minute until the FastLearn is complete.
Note: It will take a further 24 hours after the FastLearn for full sensitivity to be
reached, unless Demonstration Mode has been initiated. It is essential for proper
functioning that the detector not be left in Demonstration Mode, and that it be
allowed to complete the 24-hour learning period. To cancel Demonstration Mode,
set this function to Yes or power down and restart the detector to initiate
FastLearn Mode.
Auto FastLearn
Yes/No - Address 001-127: As default, this function is set to Yes. This ensures
that if the detector is powered down for any reason (e.g., for maintenance or to
be moved to a new area), FastLearn begins automatically on power-up. There
may be occasions when it is desirable to power down the detector for short
periods of time, and it is highly likely that ambient contaminant levels will be the
same on power-up. Under these circumstances, it may not be necessary to
perform a FastLearn process again. In this case, this function can be set to No
before power-down, allowing the detector to return to its original settings on
power-up.
Time delay override
Yes/No - Address 001-127: If this function is set to Yes , then the detector will
ignore any pre-set time delays in the event of an unacceptably rapid increase in
smoke density, thereby minimising response time to “rapid growth” fires. This
function would normally only be used where there were long time delays
programmed on the alarm levels.
Cascading alarms
Yes/No - Address 001-127: Setting this function to Yes means that the controller
starts counting down the main Fire delay only when the detector’s controller is in
Pre-Alarm state (which means that time delays on Pre-Alarm and Fire 1 are
cumulative). The Aux alarm is not included in the cumulative delay since it may
be set to a higher level than either the Pre-Alarm or Fire 1 levels.