System Sensor 5451 Manuale utente

D400-29-00 1 I56-580-04R

INSTALLATION AND MAINTENANCE INSTRUCTIONS

5451 Plug-in Rate-of-Rise

Thermal Detector with

Fixed Temperature Alarm

Specifications

Diameter: 4.1 inches (104 mm)

Height: 2.1 inches (53 mm)

Weight: 5 ounces (150 g)

Installation Temperatures: 32° to 100°F (0° to 38°C)

Operating Humidity Range: 10% to 93% Relative Humidity

Latching Alarm: Reset by momentary power interruption

Sensitivity 135°F (57°C) Fixed or 15°F/min rate-of-rise

Operating Voltage: 15-35 VDC

Standby Current: 100 µA

Before Installing

This detector must be installed in compliance with the con-

trol panel installation manual and meet the requirements of

the authority having jurisdiction. In addition, the National

Fire Protection Association has published codes, standards,

and recommended practices for the installation and use of

detectors, NFPA 72.

Therefore, the installer must be familiar with these require-

ments, with local codes, and any special requirements of

the authority having jurisdiction.

NOTICE:This manual should be left with the owner/user

of this equipment.

IMPORTANT: This detector must be tested and maintained

regularly following NFPA 72 requirements. The detector

should be cleaned at least once a year.

General Description

Model 5451 is a rate-of-rise with fixed temperature alarm

thermal detector utilizing a state-of-the-art dual thermistor

sensing circuit. These detectors are designed to provide

open area protection with 50-foot spacing capability, and

are to be used with compatible control panels only.

Two LEDs on each detector light to provide 360° visibility

of the detector indication. Remote LED annunciator capa-

bility is provided as standard, and the RA400Z remote LED

annunciator is available as an optional accessory.

Base Selection and Wiring Guide

Refer to the installation instructions for the plug-in detec-

tor bases for base selection and wiring instructions. System

Sensor has available a variety of detector bases for these

heat detectors, including 2-wire applications with and

without relays and/or current limiting resistors for use with

control panels that require one. This detector is only to be

used with 400 and 400B series bases.

Install the System Sensor plug-in base to be used with the

detector following the instructions in the base manual.

D400-29-00 2 I56-580-04R

Installation

NOTE: All wiring must conform to applicable installation

codes and regulations.

NOTE: Verify that all detector bases are installed, that the

initiating-device circuits have been tested, and that

the wiring is correct. (Refer to detector base man-

ual for testing procedure.)

Disconnect the power from initiating-device circuits before

installing detectors.

1. Install Detectors:

a. Insert the detector into the detector base.

b. Turn the detector clockwise until the detector drops

into place.

c. Continue turning detector clockwise to lock it in

place.

2. After all detectors have been installed, apply power to

the control unit.

3. Test the detector using the magnet as described under

TESTING.

4. Reset the detector at the system control panel.

5. Notify the proper authorities that the system is in oper-

ation.

WARNING

Tamper Resistance

The detector bases include a feature that, when activated,

prevents removal of the detector without the use of a tool.

Refer to the installation instruction manual of the detector

base to make use of this capability.

Testing

Before testing, notify the proper authorities that the heat

detector system is undergoing maintenance, and therefore

the system will temporarily be out of service. Disable the

zone or system undergoing maintenance to prevent

unwanted alarms.

Detectors must be tested after installation and periodic

maintenance. The 5451 may be tested as follows:

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

1. Position the magnet against the cover opposite the

test module socket. (See Figure 1.)

2. The LEDs on the detector should light within 10 sec-

onds. 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.

TEST

MAGNET

LED

TEST MODULE

SOCKET

LED

PAINTED

SURFACE

TEST

MAGNET

Figure 1. Bottom and Side Views Showing Position of Test Magnet:

D400-29-00 3 I56-580-04R

B. Test Module (System Sensor Model No. MOD400 or

MOD400R)

The MOD400 or MOD400R is used with a DMM or volt

meter to check the detector sensitivity as described in

the module’s manual.

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

From the side of the detector, direct the heat toward the

sensor. Hold the heat source about 15 cm away to pre-

vent damage to the cover during testing.

NOTE: If a detector goes into alarm, it will reset only if the

detector has cooled and if its power is momentari-

ly interrupted. Check the control panel being used

to determine whether the RESET switch (or some

other auxiliary device or control) momentarily cuts

off power to the detector loop.

Detectors that fail these tests should be cleaned as

described under MAINTENANCE and retested. If the detec-

tors still fail these tests they should be returned for repair.

Maintenance

The 5451 detector has been designed to be as maintenance-

free as possible. Normal air-borne dust, however, can accu-

mulate on the detector’s sensing elements and cause them

to become less sensitive. All detectors should be tested and

cleaned at least once a year, and those in dustier areas

should be tested and cleaned more often. Detectors must

also be cleaned and tested immediately after a fire.

Before cleaning, notify the proper authorities that the sys-

tem is undergoing maintenance and therefore the system

will temporarily be out of service. Disable the loop or sys-

tem undergoing maintenance to prevent unwanted alarms.

1. Remove detector from mounting base.

2. Use a vacuum cleaner to remove dust from the sensing

chamber.

3. Reinstall the detector.

4. Test detector as described under TESTING.

D400-29-00 4 I56-580-04R

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, representative, dealer,

or employee of the Company has the authority to increase or alter the obli-

gations 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

Department, 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 dam-

ages for breach of this or any other Warranty, expressed or implied what-

soever, 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.

Please refer to insert for the Limitations of Fire Alarm Systems

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