GLOSSARY OF 4002 FIRE ALARM SYSTEM TERMS
A/arm Verification Option:
A field-programmed option tha? causes the CPU to verify (double-check) all atarM
initiations originated by SMOke detectors before sounding the signals.
Annunciator;
A reMotely-located, electrically-powered display, separate from the control panel, containing LEDs
or lamps to indicate the status of the fire aiarm system.
Auxiliary (AUX) Relays:
Control relays that normally energize during alarm conditions, and that are used to either
apply power to or remove power from other equipment during an alarm condition. An auxiliary relay can also be
programmed for activation during a trouble condition rather than an alarm condition.
City Remote
Station Connection Circuit:
Circuitry contained on the CPU board, which allows the 4002 fire
alarm system to be tied either indirectly (via leased telephone lines) or directly (via a shunt or local energy master
box) to a municipal fire station.
C/ass A Cireuitr
An initiating device (Style D) or notification appliance circuit (Style Z) within which all components
remain fully functional even though a single open or ground exists in the circuit.
C/ass
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Circuit:
An initiating device (Style B) or notification appliance circuit (Style Y) within which some or all
components May be disabled when a single open or ground exists in the circuit.
CPU
(Centrat Processing Unit):
That portion of the fire alarm panel which processes alarm and trouble
information received from throughout the system, and acts on that information in an approprlate Manner.
CPU Board:
A Panel-Mounted Module consisting of (among other things) the CPU itself, eight zone [circuit]
Monitors, two signal [circuit] Monitors and two AUX relays.
End-of-Line (E.O.L.)
Resistor: A resistor installed at the electrically farthermost point in a signal or zone circuit.
Fan Control Module:
A panel-mounted Module that consists of manual switches which allow fan or damper
control circuits to be turned on, turned off, or operated automatically.
Fire Alarm Control Pane/:
The portion of the fire alarm system which provides the power and contains the
circuitry needed for system operation.
Notification Appliance (Signal) Circuit:
A circuit consisting of one or More notification appliances.
Notification Appliance (Signahg
Device): A device which produces an audible and/or visual signal in response
to a fire condition.
l
Horn, bell, chime, flashing light, etc.
hifiating
Device: A Manual or automatic device which, when activated, initiates an alarm.
l
Pull station, heat or smoke detector, waterflow switch, etc.
Initiating Device (Zone) Circuit:
A circuit consisting of one or more initiating devices.
Local Energy Master
Box: A municipal fire department connection box, Mounted external to the panel, that uses
electrical energy from the fire alarm panel to energize its (the master box’s) electromagnetic tripping mechanism.
Power Supply Module:
That portion of the fire alarm panel which provides the power needed to operate all panel
modules, as well as that needed to operate all electrically-powered initiating devices and all notification appliances.
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