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Stratos HSSD-2 • INSTALLER’S HANDBOOK • Iss. 12
3.4.6 Hour start of day and night operation
(Numeric - Address 001-127)
Setup menu > Alarm levels
These values are the times to the nearest hour at which the day/night switching is
desired to take place on the detector. Entries are made in 24-hour format, e.g. 19:00
for 7pm. If no day/night switching is required, then both entries should be set to 00:00.
Day and night switching is intended so that the detector may automatically select a
different sensitivity when the protected area is unoccupied and fewer contaminants are
being produced. ClassiFire automatically detects the change in smoke level after the
protected area is left, and if the time at which this happens is within +/– 70 minutes
of the programmed switchover time it selects the night-time histogram. Note that if
the environment actually becomes more contaminated during the night period for any
reason then ClassiFire will adapt to that too, reducing the night-time sensitivity. The
system will automatically compensat e for 1 hour seasonal time-changes.
3.4.7 LDD™ Enable (Yes/No - Address 001-127)
Setup menu > Alarm levels
When this function is set to Yes, Laser Dust Discrimination (LDD) increases the
response time of the detector slightly, whilst greatly reducing the likelihood of nuisance
alarms due to dust ingress. LDD may be disabled in very clean rooms for a slightly faster
response to smoke by setting this function to No. Disabling LDD is not recommended
for areas other than manufacturing clean rooms, due to the increased probability of
nuisance alarms in most other operating environments.
3.4.8 Start / Stop FastLearn (Yes/No - Address 001-127)
Setup menu > Alarm levels
If the detector is in FastLearn mode, setting this function to No will stop the FastLearn
process. Using the function in this way is neither recommended nor supported by
Kidde Products Ltd.
Setting this function to Yes will start a FastLearn at any time. The bargraph display on
the front of the detector will show a rolling segment display on the front panel for the
fifteen minutes that it takes to complete.
The text display will initially display the legend FastLearn 15 and will then count
down each minute until the FastLearn is complete.
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 demo mode, set this function to Yes or power
down and restart the detector to initiate FastLearn mode.
NB
☞
IMPORTANT NOTE
!
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