Appendix-O: Glossary - Faraday MPC-6000 Installation, Operation And Maintenance Manual

MPC-6000 / MPC-7000 / RND-2 INSTALLATION, OPERATION AND MAINTENANCE MANUAL

APPENDIX-O: GLOSSARY

1st Alarm Condition. Refers to the condition in which the releasing or counting zone input
group meets at least one of the threshold requirements. This does not refer to the pre-alarm
condition detected by the smoke detector.
Abort Condition. Condition in which the abort function is pressed during 1st-Alarm (IRI type
only) or during Pre-Discharge condition.
Abort Function. Defines an event that is manually initiated during the proper releasing event
sequence that will indefinitely prevent the releasing circuit from activating.
AC Power Fail. Refers to a condition in which AC power loss is detected by the system.
Agent Release Delay. Same as Pre-Discharge Delay.
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.
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.
96