EST LSS4 - Page 126

Glossary
Silenceable
Temporal
Pattern
Verification,
Alarm
Water
Flow
Zone
Y.2
A
Notitication
appliance
circuit
(NAC)
which
followsthe
actionofthe
alarm
silence
switch.
A 3
pulse
signal
meetingthe
requirementsof
NFPA
Standard72,
sectionA-2-4.10(a).
This
is the
national
standard
fire
alarm
evacuation
signal.
After
receiptofan
alarmbya
smoke
detector,
verified
zones
attemptto
automatically
resetthe
detector.
Receiptofa
second
alarm
withinthe
60
second
confirmation
period
afterthe
automatic
detector
reset
period
transmitsthe
alarmtothe
panel.
I DCs
definedas
water
flow
zonescan
activate
NACs
whicriare
silenceableor
non-silenceable.
When
activatingan NAC
configureda
silenceable,theNAC
will
overridethesilenceaDleNAC
configuration,
and theNAC
will NOT
silence
LSS4
Installation,
Operation,and
Maintenance
Manual