1
I56
‐
2700
‐
004
BEFORE
INSTALLING
This
sensor
must
be
installed
in
compliance
with
the
C.I.E.
installation
manual.
The
installation
must
meet
the
requirements
of
the
Authority
Having
Jurisdiction
(AHJ).
Heat
Sensors
offer
maximum
performance
when
installed
in
compliance
with
AS1670.1
‐
2004.
Please
refer
to
the
operators
manual
for
the
listed
C.I.E.
for
specific
operation
and
settings
for
the
5251RB
‐
WP
and
5251B
‐
WP
Heat
sensors.
Note:
This
detector
must
be
fitted
to
the
special
B501A
base
as
supplied
with
the
detector.
This
detector
will
not
fit
into
the
standard
B501
model
base.
GENERAL
DESCRIPTION
Models
5251RB
‐
WP
and
5251B
‐
WP
are
intelligent
heat
sensors
that
utilize
a
state
‐
of
‐
the
‐
art
thermistor
sensing
circuit
for
fast
response.
All
heat
detectors
should
be
spaced
and
installed
in
accordance
with
the
requirements
of
the
relevant
authority
having
jurisdiction
and
AS1670.1
‐
2004.
The
detector
address
should
be
set
by
handheld
programmer
(model
CP500)
from
1
to
159
before
installing.
Note:
Check
C.I.E.
maximum
loop
capacity
before
setting
address
higher
than
99.
Model
5251RB
‐
WP
is
a
Type
A2R
rate
‐
of
‐
rise
temperature
sensor
with
63°C
fixed
temperature
alarm
setting.
Model
5251B
‐
WP
is
a
Type
A2
fixed
temperature
heat
sensor
with
63°C
fixed
temperature
alarm
setting.
Two
LEDs
illuminate
red
to
provide
360°
visibility
of
the
sensor
alarm
indication.
The
LEDs
can
be
latched
on
by
code
command
from
the
C.I.E.
for
an
alarm
indication.
The
LEDs
can
also
be
unlatched
to
the
normal
condition
by
code
command.
Remote
LED
annunciator
capability
is
available
as
an
optional
accessory
(Part
No.
RA400Z).
Models
5251RB
‐
WP
and
5251B
‐
WP
require
compatible
addressable
communications
to
function
properly.
Therefore
these
sensors
must
only
be
connected
to
compatible
and
listed
C.I.E.
WIRING
GUIDE
Proper
wire
gauges
should
be
used.
The
installation
wires
should
be
color
coded
to
limit
wiring
mistakes
and
ease
system
troubleshooting.
Improper
connections
will
prevent
a
system
from
responding
properly
in
the
event
of
a
fire.
WIRING
INSTALLATION
GUIDELINES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
SPECIFICATIONS
Diameter:
Height:
Weight:
Installation
Temperature
Range:
Operating
Humidity
Range:
Voltage
Range:
Standby
Current:
LED
Current:
Fixed
Temperature
Rating:
Fixed
Temp.
&
ROR
Detection:
Fixed
Temp.
Detection:
IP
Rating:
104
mm
(4.1
inches)
installed
in
B501A
51
mm
(2.0
inches)
137
g
(4.8
ounces)
–20°C
to
50°C
(
‐
4
°
F
to
122
°
F)
10%
to
90%
Relative
Humidity
(Non
‐
condensing)
15
to
32
Volts
DC
Peak
300
μ
A
@
24
VDC
(one
communication
every
5
seconds
with
LED
blink
enabled)
6.5
mA
@
24
VDC
63°C
(146
°
F)
Type:
A2R
(5251RB
‐
WP)
Type:
A2
(5251B
‐
WP)
IP67
Figure 1.
This
detector
provides
six
wires
which
are
divided
into
three
groups,
separately
two
red,
two
white
and
two
black
wires.
Refer
to
Figure
1.
Terminal
Notes:
Red
wire:
Power
/
Loop
+ve
Black
wire:
Power
/
Loop
‐
ve
(also
Remote
LED
‐
ve
)
White
wire:
Remote
LED
+ve
Wiring
Diagram
refers
to
Figure
2.
Remove
power
from
the
communication
line
before
installing
sensors.
1.
Secure
B501A
adapter
to
the
roof
or
ceiling.
2.
Set
the
sensor
to
a
desired
address
with
handheld
programmer.
3.
Connect
the
Wires
to
loop
wiring
as
per
the
wiring
diagram,
see
Figure
2A.
4.
The
wiring
connections
must
be
prevent
from
water,
see
figure
2B.
5.
Install
the
sensor
into
the
sensor
adapter.
Push
the
sensor
into
the
adapter
while
turning
it
clockwise
to
secure
it
in
place.
6.
After
all
sensors
have
been
installed,
apply
power
to
the
control
unit
and
activate
the
communication
line.
7.
Test
the
sensor(s)
as
described
in
the
TESTING
section
of
this
manual.
5251RB-WP and 5251B-WP
Weatherproof Intelligent Heat Sensors
www.systemsensor.com
