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Installation and Operation Manual
Reset Condition. Condition in which the panel is forced to return to its normal state, usually performed by
pressing the "SYTEM RESET" button after all known events / conditions are cleared.
Supervisory. A signal indicating the operation of a supervisory device.
Supervisory Device. A device that monitors the condition of a sprinkler system, such as a gate‐valve switch, a
water‐level switch, a low‐pressure switch, a low temperature switch, or a fire‐pump monitor.
Trouble Signal. An audible signal indicating trouble of any nature, such as a circuit break or a ground, occurring
in the device or in the wiring associated with a fire alarm signal.
Waterflow Switch. An assembly approved for service and built accordingly. The assembly is installed in a way
that any flow of water from a sprinkler system equal to or greater than that from a single automatic sprinkler
head will activate the switch and subsequent indication of an alarm condition.
XNU (External Network Unit).A unit that provides interface circuit to communicate with other networked panel
and/or annunciator.
Zone.A designated area of a building, commonly identified as a zone, is interchanged with an initiating device
circuit.
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