Edwards Signaling 2400 Series - Manual (Page 62)

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Non-Silenceable - An indicating appliance circuit (IAC) which remains active after initiation, independent
of the alarm silence features.
One-Man Test - Maintenance mode to test initiating and indicating circuits. Creating an alarm on the
Initiating Device Circuit (IDC) under test causes both Indicating Appliance Circuit (IAC) to pulse out the
zone number of the zone under test (i.e., three rings for zone 3). Creating a trouble or ground fault
condition on the IDC under test causes both IACs to output a single long pulse.
Password, Dialer - 4727 (GSBS)
Power Limited - Wiring and equipment which conforms with and is installed to the National Electrical
Code, article 760, power limited provisions.
Retard - The delay of waterflow signals to prevent false alarms due to fluctuations in water pressure.
Silenceable - An Indicating Appliance Circuit (IAC) which follows the action of the alarm silence switch.
SPM - Strokes Per Minute.
Style B Supervision, IDC - Circuit monitoring technique which signals a trouble condition upon an open
condition or ground fault on an Initiating Device Circuit. All devices up to the location of an open fault can
initiate an alarm.
Style D Supervision, IDC - Circuit monitoring technique which signals a trouble condition upon an open
condition or ground fault on an Initiating Device Circuit. All devices can initiate an alarm in the event of an
open fault. Similar to Class A IDC supervision.
Style Y Supervision, IAC - Circuit monitoring technique which signals a trouble condition upon an open,
short, or ground fault condition on an Indicating Appliance Circuit. Similar to Class B IAC supervision.
Style Z Supervision, IAC - Circuit monitoring technique which signals a trouble condition upon an open,
short, or ground fault condition on an Indicating Appliance Circuit. All appliances can operate in spite of an
open fault. Similar to Class A IAC supervision.
Supervisory Operation - An IDC used to monitor the status of critical fire protection equipment.
Temporal Pattern - A 3 pulse signal meeting the requirements of NFPA Standard 72, section A-2-4.10(a),
and ULC 527.
Verification, Alarm - After receipt of an alarm by a smoke detector, verified zones attempt to
automatically reset the detector. Receipt of a second alarm within the 60 second confirmation period after
the automatic detector reset period transmits the alarm to the panel.
Waterflow Zone - IDCs defined as waterflow zones do not permit alarm silence while the alarm is active.