MPC-6000 / MPC-7000 / RND-2 INSTALLATION, OPERATION AND MAINTENANCE MANUAL
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APPENDIX-E: GLOSSARY
Alarm Signal
. A signal indicating an emergency requiring immediate action, such as an alarm
for fire from a manual station, a waterflow alarm, or an automatic smoke detector.
Alarm Silence Inhibit
. An option that prevents a human operator from silencing the
notification appliances for a preset period of time.
Alarm System
. A combination of compatible initiating devices, control units, and notification
appliances designed and installed to produce an alarm signal in the event of a fire.
Alarm Verification
. A preset option that causes the control unit to verify alarms originated by
smoke detectors before indicating an alarm.
Annunciator
. A remotely located, electrically powered display, separate from the control unit,
containing LEDs or lamps to indicate the states of the fire alarm system.
Audible Signal
. An audible signal is a sound made by one or more audible notification
appliances, such as bells or horns, in response to the operation of an initiating device.
Authority Having Jurisdiction (AHJ)
. The organization, office, or individual responsible for
approving equipment, installation or procedure.
Auto-Silence
. The capability of a control to automatically silence the notification appliances
after a preset period of time.
Auxiliary Relays
. Control relays that energize only during alarm conditions that are used to
either apply power to or remove power from other equipment during an alarm condition.
Class A Circuit
. An initiating device or notification appliance circuit within which all
components remain fully functional, even though a single open or ground exists in the circuit.
Class B Circuit
. An initiating device or notification appliance circuit within which some or all
components may be disabled with a single open or ground exists in the circuit.
Detector - FireSmart™
. An intelligent fire detector that blends photoelectric, thermal and
neural network technologies for superior protection without false alarms.
Detector - Smoke, Photoelectric Type
. A detector employing the photoelectric principle of
reflection or obstruction of light by smoke.
Detector - Thermal Type
. An addressable thermal sensor that is programmable as either a
fixed temperature (135° F) or as a rate of rise detector.
End Of Line (EOL)
. A device used to terminate a supervised circuit.
