2-4
When an alarm condition exists, the building’s warning system activates to warn the
building’s occupants about the alarm condition. In addition, the external bell sounds to
indicate the building location nearest the 4100 FIP.
The following occurs when the <WARN SYS ISOLATE> key is pressed.
• WARN SYS ISOLATE indictor is steady ON.
• The EWS turns OFF.
The 4100 is unable to activate the EWS again until the <WARN SYS ISOLATE> key
is pressed again. When all zones have been reset, you need to press this key again
to “reset” the 4100’s connection to the EWS.
The <EXT BELL ISOLATE> key toggles the state of the external bell output.
When the output is on and the bell is sounding due to an alarm condition, pressing the <EXT
BELL ISOLATE> key does the following
• EXT BELL ISOLATE indicator is steady ON.
• The External Bell turns OFF.
The 4100 is unable to activate the external bell again until the <EXT BELL ISOLATE>
key is pressed again. When all zones have been reset, you need to press this key
again to “reset” the 4100’s connection to the external bell.
Isolating (Silencing) the EWS or External Bell
Overview
Isolating the EWS
Isolating the
External Bell
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