Installation
and
Operation
Manual
66
Reset
Condition.
Condition
in
which
the
panel
is
forced
to
return
to
its
normal
state,
usually
performed
by
pressing
the
“SYTEM
RESET”
button
after
all
known
events
/
conditions
are
cleared.
Supervisory.
A
signal
indicating
the
operation
of
a
supervisory
device.
Supervisory
Device.
A
device
that
monitors
the
condition
of
a
sprinkler
system,
such
as
a
gate
‐
valve
switch,
a
water
‐
level
switch,
a
low
‐
pressure
switch,
a
low
temperature
switch,
or
a
fire
‐
pump
monitor.
Trouble
Signal.
An
audible
signal
indicating
trouble
of
any
nature,
such
as
a
circuit
break
or
a
ground,
occurring
in
the
device
or
in
the
wiring
associated
with
a
fire
alarm
signal.
Waterflow
Switch.
An
assembly
approved
for
service
and
built
accordingly.
The
assembly
is
installed
in
a
way
that
any
flow
of
water
from
a
sprinkler
system
equal
to
or
greater
than
that
from
a
single
automatic
sprinkler
head
will
activate
the
switch
and
subsequent
indication
of
an
alarm
condition.
XNU
(External
Network
Unit).
A
unit
that
provides
interfacecircuitto
communicate
with
other
networked
panel
and/or
annunciator.
Zone.
A
designated
area
of
a
building,
commonly
identified
as
a
zone,
is
interchanged
with
an
initiating
device
circuit.