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3.0 Conventions
3.1 Circuits
Refers to an actual electrical interface for Initiating (Detection) and Indicating (Signal or NAC)
or Relays.
3.2 Zone
Is a logical concept for a Fire Alarm Protected Area, and consists of at least one circuit.
Often the terms zone and circuit are used interchangeably, but in this manual circuit refers
only to a physical electrical loop.
3.3 Display Points
There is a display point associated with every initiating and indicating circuit of the FA-300
LED Series fire panel. For an initiating circuit there are 2 LEDs for every display point: one
single color (amber) and one dual color (red/amber). For an indicating circuit there is only one
LED: one single color (amber), for every display point.
3.4 Wiring Styles
Initiating and indicating circuits are Class B (style B and Y).
Changing the initiating circuits to Class A requires an ICAC-306 adder board which converts
six initiating zones from Class B (style B) circuits to Class A (style D). This is done without
decreasing the number of circuits, which remains the same as in Class B (style B).
Changing the indicating circuits to Class A requires an OCAC-304 adder board which converts
four indicating zones from Class B (style Y) circuits to Class A (style Z) or an OCAC-302 adder
board which converts two indicating zones from Class B (style Y) circuits to Class A (style Z).
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