System Sensor 5251RP User Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS

Intelligent Plug-In Model 5251RP
Rate-of-Rise Temperature Sensor
with Fixed Temperature Alarm

Before installing sensors, r efer to NFPA 72, and 101 (Life Safety Code) for information on sensor spacing, placement, zon­ing, 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 sen­sor 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 com­mand. 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 32 Volts DC Peak
Standby Current:
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.

300 µA @ 24 VDC (one communication every 5 seconds with LED blink enabled)

3825 Ohio Avenue, St. Charles, Illinois 60174

1-800-SENSOR2, FAX: [phone]

A Division of Pittway

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 pro vided with screw ter­minals for power, ground, and remote annunciator connections. See Figure 1.

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NOTE: All wiring must conform to applicable local codes, ordinances, and regulations.

NOTE: Verify that all sensor bases are installed and that the wiring polarity is correct at each base.

WARNING: Disconnect the power from the loop before installing sensors.

1. Install Sensors:
a. Verify that the sensor type matches the type written on the label in the base.
b. Set the sensor to a desired address and then write the address on the label on the base.
c. Place the sensor into the sensor base.
d. Turn the sensor clockwise until it drops into place.
e. Continue turning the sensor clockwise to lock it in place.

CONTROL PANEL

U.L. LISTED COMPATIBLE

REMOTE ANNUNCIATOR

+-

+

2

3

1

-

­+

CLASS A OPTIONAL WIRING

CAUTION: Do not loop wire under terminal 1 or 2.
Break wire run to provide supervision of connections.

2

3

1

3

2

1

Figure 1

2. Tamper Resistance:
The sensor bases have a tamper-resistant capability. When this capability is enabled, sensors cannot be r emoved from
the base without the use of a small screwdriver or other similar tool. Refer to the sensor base installation instruction
manual for details in using this capability.

3. After all sensors have been installed, apply power to the control unit.

A78-1253-01

4. Test the sensor by placing a small magnet against the sensor plastic, as shown in Figure 2. The alarm level should be
recognized in the panel and the LED controlled by communication command from the panel.

5. The reset of the sensor LED is controlled by communication command from the panel.

TESTING

Sensors must be tested after installation and periodic maintenance. The sensor may be tested in the following way s.

A. Test Magnet (Model No. M02-04)

1. Place the magnet against the cover in the magnet test area as shown in Figure 2 to activate the test feature.

2. The LEDs should latch ON within 10 seconds, indicating alarm and annunciating the panel.

3. Reset the detector at the system control panel.

B. Test sensitivity from the control panel.

C. Direct Heat Method (Hair dryer of 1000 – 1500 watts)

1. From the side of the detector, direct the heat to war d the sensor. Hold the heat source about 6 inches (15cm) a way to

prevent damage to the cover during testing.

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2. The LEDs on the detector should light when the temperature at the detector reaches 135°F (57°C). If the LEDs fail
to light, check the power to the detector and the wiring in the detector base.

3. Reset the detector at the system control panel.

Detectors that fail these tests should be cleaned as described under MAINTENANCE and retested. If the detectors still fail
these tests they should be returned for repair.

LED

PAINTED

SURFACE

PAINTED
SURFACE

TEST

MAGNET

LED

MAGNET TEST MARKER

TEST

MAGNET

A78-1478-05

Figure 2. Views showing position of test magnet.

MAINTENANCE

NOTE: Before cleaning notify the proper authorities that the sy stem is undergoing maintenance, and therefore the sy stem

will temporarily be out of service. Disable the loop or system undergoing maintenance to prevent unwanted
alarms.

It is recommended that the sensor be removed from its mounting base for easier cleaning and that sensors be cleaned at
least once a year. Use a vacuum cleaner to remove dust from the sensing chamber. See Figure 3.

A78-1944-01

Figure 3

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Please refer to insert for the Limitations of Fire Alarm Systems

Three-Year Limited Warranty

System Sensor warrants its enclosed heat detector to be free from defects
in materials and workmanship under normal use and service for a period
of three years from date of manufacture. System Sensor makes no other
express warranty for this heat detector. No agent, repr esentative , dealer, or
employee of the Company has the authority to increase or alter the obliga­tions or limitations of this Warranty. The Company’s obligation of this
Warranty shall be limited to the repair or replacement of any part of the
heat detector which is found to be defective in materials or workmanship
under normal use and service during the three year period commencing
with the date of manufacture. After phoning System Sensor’s toll free
number 800-SENSOR2 (736-7672) for a Return Authorization number,
send defective units postage prepaid to: System Sensor, Repair Depart-

ment, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please
include a note describing the malfunction and suspected cause of failure.
The Company shall not be obligated to repair or replace units which are
found to be defective because of damage, unreasonable use, modifica­tions, or alterations occurring after the date of manufacture. In no case
shall the Company be liable for any consequential or incidental damages
for breach of this or any other Warranty , e xpr essed or implied whatsoe ver,
even if the loss or damage is caused by the Company’ s negligence or fault.
Some states do not allow the exclusion or limitation of incidental or conse­quential damages, so the above limitation or exclusion may not apply to
you. This Warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.

This device complies with part 15 of the FCC Rules. Oper ation is subject to the following tw o conditions: (1) This de vice ma y not cause harmful interfer­ence, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to P art 15 of the FCC Rules. These limits

are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to r adio commu­nications. Howev er, there is no guarantee that interfer ence will not occur in a particular installation. If this equipment does cause harmful interfer­ence to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help.

FCC Statement

D200-89-00 4 I56-1332-03R

© 2000 System Sensor