for more than the Alarm 3 Delay-On timer the audible alarm will
sound, the LED strobe asher will start (if enabled; setting 45), a 3
will appear in the bottom left corner of the display, and the Alarm
3 Transmit message (default 3) will be sent to other sensors or
Communication modules. They can be silenced by pressing any
button.
13. When the gas concentration drops below the Alarm 3 set point for
longer than the Alarm 3 Delay-Off setting then the audible alarm
and strobe asher will stop and the Alarm 3 Transmit message will
stop being sent on the CAN network.
14. On a sensor fault condition, the units will transmit the Fault
Transmit Message, option 59, to other monitors or Communication
modules.
15. Manual override mode is available to test relay functions and to
activate ventilation. From the home screen press and hold the
up arrow for 5 seconds. Press the up arrow to increase the timer
by 5 minutes per click up the 60 minutes. The screen will display
MAN 5 and timer will energise relay 1 and send the Alarm 1
Transmit Message on the CAN network. After the time runs down
the unit will return to automatic operation. To cancel, press the
down arrow several times to reduce the timer to zero and return to
normal operation. To activate Alarm Level 2 or 3 as well with this
procedure, set option 69 to 2 or 3.
This sample sequence of operation shows the operation of a
basic network for one zone. See the Operation Manual section
4 Operation to see how to change settings and section 5
Congurations for setting up multiple zones.
4.5 Sequence of Operation
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