D200-89-00
1
I56-1332-02
Intelligent Plug-In Model 5251RP
Rate-of-Rise Temperature Sensor
with Fixed Temperature Alarm
INSTALLATION AND MAINTENANCE INSTRUCTIONS
A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
Before installing sensors, refer to NFPA 72, and 101 (Life Safety Code) for information on sensor spacing, placement, zon-
ing, and special applications.
GENERAL DESCRIPTION
Model 5251RP is an intelligent sensor that utilizes a state-of-the-art thermistor sensing circuit for fast response. This sen-
sor is designed to provide open area protection with 50 foot spacing capability and is intended for use with compatible
control panels only.
Two LEDs on each sensor light to provide 360
°
visibility of the sensor indication. The LEDs can be latched ON by code
command from the panel for an alarm indication. The LEDs can also be unlatched to the normal condition by code com-
mand. Remote LED annunciator capability is available as an optional accessory (Part No. RA400Z).
SPECIFICATIONS
Diameter:
6.1 inches (155 mm) installed in B210LP
4.1 inches (104 mm) installed in B501
Height:
2.0 inches (51 mm)
Weight:
5 ounces (150 gm)
Installation Temperatures:
-4
°
F to 100
°
F (-20
°
C to 38
°
C)
Operating Humidity Range:
10% to 93% Relative Humidity Non-condensing
Mounting:
B210LP flanged base
B501 flangeless base
B501 with RMK400 recessed mounting kit
Voltage Range:
15 to 28 Volts DC Peak
Standby Current:
300
µ
A @ 24 VDC (one communication every 5 seconds with LED blink enabled)
LED Current:
6.5 mA @ 24 VDC
Fixed Temperature Rating:
135
°
F (57
°
C)
Rate-of-Rise Detection:
Responds to greater than 15
°
F/min.
WIRING GUIDE
Refer to the installation instructions for the particular plug-in base being used: 1) for the B210LP base (D250-01-00); 2) for
the B501 base (D550-02-00); 3) for the RMK400 used with the B501 base (D450-07-00). Bases are provided with screw ter-
minals for power, ground, and remote annunciator connections. See Figure 1.
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