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Duonet User Instructions
5
System Configuration
The detectors and call-points are arranged in zones to enable the location of a fire alarm to be
identified. The number of zones depends on the size and the layout of the premises, and is limited to
128 zones per control panel (there may be more than one). There should be a chart or drawing
provided with the system indicating the area and layout of the zones – ensure that you are familiar
with the zone layout so that appropriate action can be taken in the event of a fire alarm.
The Control Panel display may also give you a zone number, a device description, a device number
and a device type; indicating the exact location of the device which has operated.
The system may be interfaced with the building services, e.g., the air conditioning may be shut down
when the alarm sounds. Make sure that you know what happens when the fire alarm operates as this
can affect routine system testing.
The system is powered from the mains supply and incorporates a standby battery which
automatically maintains the system in operation for a time of at least 48 hours in the event of a mains
supply failure.
What to do if . . .
The fire alarm sounds;
CARRY OUT THE PRESCRIBED FIRE DRILL
When it is safe to do so silence the alarms and reset the system, having first established the cause
of the alarm (refer to Operation).
The buzzer sounds;
If the buzzer sounds without the alarm sounders operating it is likely to be a fault or other abnormal
condition.
Make a note of
all illuminated LEDs and displayed messages, record the time that the condition
occurred (if known), and other events within the building, eg., power failure, contractors working, etc.,
(Refer to troubleshooting). Call the service company with as much information as possible.