LaserSCANNER Product Manual
VESDA
®
8
Push Button
Keys
These buttons enable various systems functions. These do not allow
configuring the system. The buttons can be disabled by the systems
administrator.
Mode/Test (Dual Function): Selects modes on the numerical display -
sensitivity, smoke level, or zone number. When depressed for more than 2
seconds it performs a light test function.
Silence/Scan (Dual Function): This button has dual functions. It silences
any alarm or fault warnings. Any LEDs flashing to indicate an alarm
condition or a fault will stop flashing. When pressed for two seconds it
initiates a Scan Test.
Reset: Resets any latched alarms and faults on the detector. Any active alarms
or faults are reported again after the time delays have elapsed.
Isolate: Isolates the detector from any external devices or systems (an isolate
alarm will normally be raised at the fire alarm control panel).
Note:
It is recommended practise to signal the Isolate condition to the Fire
Control Panel using the Isolate relay.
Numerical
Display
Sensitivity: Shows the level of smoke that must be measured to illuminate the
entire bar graph and always corresponds with the Fire 1 alarm level.
Smoke Level: Indicates the current level of smoke in the relevant VESDA Zone
and is represented as % obs/m or % obs/ft.
Zone Number: This is the VESDA Zone number assigned to the Display
Module.
First Alarm Sector: This is the pipe with the highest level of smoke and is
represented with a “P” followed by the pipe number.
Note:
The Mode button is used to select the parameter to display in the
numeric display. These values represent the current readings for the
corresponding parameters mentioned alongside the lit LED.