Chapter 3: Programming the unit
50 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook
upon main supply failure the aspirator (fan) will reduce speed to minimum,
regardless of the user-defined value. (See “Aspirator speed” below for details.)
This function has no effect on the command module.
Note: When in this condition, any smoke reading above 3 bar graph segments
on the detector will automatically remove this condition.
Battery check enable
Yes/No - Address 000-127: If no battery back-up is required, this function
should be set to No to avoid Battery fault being displayed on the front panel. If a
back-up battery is used, it is recommended that the battery check be enabled.
When this is done the user will be prompted for an input terminal to use. The
battery fault will be displayed when this contact is open. The default setting is
battery fault enabled on “I/P 1”. “Detector terminal block connections” on page 23
and Command module terminal block connections” on page 25 of this manual
show the input terminal connections for the standard detector and command
module, respectively.
Mains check enable
Yes/No - Address 000-127: The detector and command module are capable of
signaling power supply faults from the power supply equipped with a fault relay.
The mains check is disabled by default. If the feature is set to “Yes”, the user will
be prompted with an unassigned input terminal to use (this will normally be “I/P
2” if battery check is already enabled on “I/P 1”. The mains fault will be displayed
when this contact is open.
Aspirator speed
1-16 - Address 001-127: The value entered here sets the detector aspirator
speed to a range of 1 through 16 predetermined speeds. The lower the value of
the number entered, the lower the airflow rate and, therefore, the less the power
consumption will be.
Flow setup
Yes/No - Address 001-127: Setting this function to Yes puts the detector into
automatic flow limit setup mode. This takes a few minutes to set the flow fault
thresholds based on the current flow rates.
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