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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 Events
There are events associated with every initiating, indicating and common circuit of the fire
panel displayed via the LCD.
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 will convert
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 will
convert four indicating zones from Class B (Style Y) circuits to Class A (Style Z) or an OCAC-
302 adder board which will convert two indicating zones from Class B (Style Y) circuits to
Class A (Style Z).
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