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Using the Configurator
19.55.4 Modified Signal Silence Configuration
A Modified Signal Silence Operation is considered to be any system whereby activation of the
signal silence switch following receipt of an alarm is partially inhibited: the audible signals are
deactivated and the visual signals remain activated.
When the
Silence NAC Audibles Only
check box on the Job Details page is selected, all
Alarm, Supervisory, Trouble, and Monitor zones with the
NS
flag will deactivate only audible
signals when signal silence is activated.
Configure modified signal silence driven by the FleX-Net™ built-in NACs
1. Select
the
Silence NAC Audibles Only
check box on the Job Details page.
2. Define
the
NS
flag to the alarm zone that requires the modified signal silence operation.
3. Do not define the
NS
flag to any of the FleX-Net™ built-in NACs.
Configure modifier signal silence driven by the INX-10A
1. Select
the
Silence NAC Audibles Only
check box on the Job Details page.
2. Correlate the signal silence status to the designated internal signal silence relay output
module of the INX-10A Power Supply panel.
3. Do not define the
NS
flag (F1) to any of the designated internal Supervised Output
module (NACs) of the INX-10A Power Supply panel.
4. Define
the
NS
flag (F1) to the alarm zone that requires the Modified Signal Silence
operation.
19.55.5 Non-Silenceable Waterflow Alarm Configuration
A Non-Silenceable Waterflow Alarm Operation is considered to be any system whereby
activation of a waterflow alarm shall inhibit the signal silencing of audible and/or visual signals.
Audible and/or visual signals in the
Waterflow
zone type are unaffected by the activation of
the signal silence switch.
Configure a non-silenceable waterflow alarm driven by the FleX-Net™ built-in NACs
1. Add all devices that are required to be non-silenceable to the
Waterflow
zone.
2. Do not define the NS flag to any of the FleX-Net™ built-in NACs.
Configure a non-silenceable waterflow alarm driven by the INX-10A
1. Add all devices that are required to be non-silenceable to the
Waterflow
zone.
2. Do not correlate the signal silence status to the designated internal signal silence relay
output module of the INX-10A Power Supply panel.
3. Do not define the NS flag (F1) to any of the designated internal Supervised Output
module (NACs) of the INX-10A Power Supply panel.
Note:
NFPA 72 (2019) 10.12.2 “When a fire alarm notification deactivation means is
actuated, both audible and visible notification appliances shall be simultaneously
deactivated” unless otherwise specified by Authority Having Jurisdiction (AHJ).
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