2-2
When an alarm condition is detected by the 4100, the panel does the following to indicate the
presence of the alarm.
• Red LED, labeled Fire Alarm flashes
• Tone-alert (piezo buzzer) pulses
• LEDs on remote annunciators may illuminate
• The alphanumeric display on the interface panel indicates an alarm condition. The exact
manner in which the alphanumeric display reports information for the alarm condition
depends on whether the system’s Display First Alarm Option is enabled.
− If Display 1
st
Alarm Option is Enabled. The display alternates between two screens
similar to Screen 1 and Screen 2 shown below. Screen 1 is a tally screen indicating the
total number of fire alarms, priority 2 alarms, supervisory conditions, and trouble
conditions present on the panel. Screen 2 is a detailed description of the first alarm
received by the panel.
−
If Display 1
st
Alarm Option is not enabled. Only a screen similar to Screen 1
appears, indicating the total number of alarm conditions present on the system.
The first step in managing an alarm condition is to acknowledge the alarm. Acknowledging an
alarm does two important things:
• It records the time and date at which you observed the presence of an alarm, trouble, or
supervisory condition on the operator interface panel and stores that information in the
system’s historical log.
• When you press the acknowledge key, the system displays specific data on the location of the
alarm.
It is important to understand that the 4100 can be configured with either Global or Individual
Acknowledge. These options function as follows:
• Global Acknowledge. When global acknowledge is enabled, one press of the ALARM
ACK key acknowledges every abnormal point currently reporting an alarm status. This is
helpful when a series of devices enter an alarm state (for example, all of the smoke detectors
in an area of the building) and you want to acknowledge all of them at the same time.
• Individual Acknowledge. If individual acknowledge is enabled, the ALARM ACK key
must be pressed to individually acknowledge each alarm. Individual acknowledge must be
selected if the panel is providing proprietary receiving service in accordance with NFPA72.
The ALARM ACK key, which is used to acknowledge alarms (either globally or individually), is
located just beneath the SYSTEM ALARM LED
Continued on next page
Acknowledging an Alarm
How the 4100
Indicates that an
Alarm has Occurred
Overview –
Acknowledging
Alarms
**FIRE** Press (ACK) to review.
FIRE = 1 PRI2=0 SUPV=0 TRBL=0
FIRST FLOOR EAST WING ROOM 31
PULL STATION
Screen 1
Screen 2
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