Product Manuals/Man-1088_Sigma XT_26 Page 22 of 40
15.3 Double zone Fire condition
Upon receipt of a second fire condition when the control panel is switched to Automatic and
Manual mode, the Hold input is not active, and the Disable Extinguishant Sub-system function has
not been invoked, the control equipment will respond as above and as listed below:
a) The second stage alarm output will operate. (Sounder circuit S3)
b) The 2
nd
stage contact will operate.
c) The release imminent indicator will operate
d) The seven segment LED displays will indicate the time remaining until release in
seconds.
e) The extinguishant output will operate after the configured delay time and for the
configured duration after which it shall de-activate.
When detection zones have activated and the activated condition is reached (i.e.
the release imminent indicator is lit) it shall not be possible to reset the extinguishant section of the
panel until the discharge duration timer has elapsed.
15.4 Manual Release
Upon operation of the front panel mounted manual release button, monitored manual release input
or a manual release input from a status unit and when the control panel is switched to Automatic
and Manual mode, the Hold input is not active, and the Disable Extinguishant has not been
invoked, the control equipment will respond as above.
In addition to the “No extinguishant delay option” (setting the option –00 at access level 3), it is
possible to set a delay for the automatic detection and no delay when a manual release input is
operated. This is done by setting option 28 at access level 3.
15.5 Silence/sound alarms
The Silence/Sound alarm button can only be operated at access level two which means that the
Enable Control key must be inserted and turned to the right.
To silence the sounders, insert the Enable Control key, turn to the right and press the
Silence/Sound alarm button.
When the sounders have been silenced, the Zone Fire LEDs will change from flashing to a steady
state.
Pressing the Silence/Sound alarm whilst the control panel is in this silenced condition, will cause
the sounders to operate again.
The sounders can be toggled on and off with the Silence/Sound alarm button as required.
15.6 Reset
To reset the panel, insert the Enable key, turn to the right then press the Reset button.
Latched inputs associated with extinguishant section will reset only after the
duration timer has elapsed once the activated condition has been established.
15.7 Zone fault
Removal of a detector from it’s base or a fault on any of the zone wiring will cause the Fault LED
and Zone Fault LEDs to flash, indicating the zone in which the fault has occurred.
15.8 Sounder fault
A fault on the wiring to sounder circuits will cause the Fault and Sounder Fault LEDs to flash,
indicating a fault on the wiring to the sounder circuits.
15.9 Power fault
Failure of the mains power or disconnection of the standby battery will cause the Fault and Power
Fault LEDs to light indicating an abnormality in the power supply to the control panel.
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