Metasys 7351J Technical Bulletin Download | Manualshive

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Technical Bulletin

Issue Date

November 15, 2002

© 2002 Johnson Controls, Inc.

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Code No. LIT-408092

www.johnsoncontrols.com

7351J Very Intelligent Early Warning (VIEW)

Laser Smoke Detector

Introduction

Prerequisites

General Description

Installation Procedures

Pre-Installation Guidelines

Detector Installation Procedure

Limiting Dust Exposure

Testing and Maintenance Procedures

Laser Safety Information

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Summary of Contents for 7351J

Page 1: ...ry Intelligent Early Warning VIEW Laser Smoke Detector Introduction 2 Prerequisites 2 General Description 3 Installation Procedures 5 Pre Installation Guidelines 5 Detector Installation Procedure 6 Limiting Dust Exposure 6 Testing and Maintenance Procedures 7 Testing 7 Maintenance 10 Laser Safety Information 12 Limitations 13 ...

Page 2: ...icable codes and standards specific to the country and locality of installation CAUTION Risk of Equipment Failure Failure to follow these directions may result in failure of this device to report an alarm or trouble condition or respond properly to an alarm condition Johnson Controls is not responsible for devices that were improperly installed tested or maintained by others As is the case with al...

Page 3: ...e The sensor transmits an analog representation of smoke density over a multiplexed SLC to the Intelligent Fire Controller IFC control panel Rotary switches are provided for setting the IFC panel s SLC sensor address 1 159 The sensor has two multicolored LEDs controlled by the panel to indicate sensor status Flashing green indicates normal operation and steady red indicates alarm pre alarm or trou...

Page 4: ... S1948 FM approved MSFM MEA CSFM Dimensions Installed in Specified Base B210LPJ Height 43 mm 1 7 in Diameter 155 mm 6 1 in B501J Height 43 mm 1 7 in Diameter 104 mm 4 1 in B501H and B501BHT Height 56 mm 2 2 in Diameter 152 mm 6 in B224BI and B224RB Height 51 mm 2 in Diameter 155 mm 6 1 in Accessories Part Number Standard United States Low Profile Base B210LPJ Standard European Flangless Surface Ba...

Page 5: ...applications with smooth ceilings space the sensors to provide a maximum coverage of 81 square meters 900 square feet under ideal conditions Refer to NFPA 72 for specific information regarding sensor spacing placement and special applications Follow these guidelines to install wiring Install all wiring in compliance with the National Electrical Code NEC applicable local codes and the special requi...

Page 6: ...0 11 12 13 14 15 0 1 2 3 4 5 6 7 8 9 IO s Units rotary Figure 2 Rotary SLC Address Switches 3 Write the address on the label located on the base 4 Install the detector by pushing the detector into the base while turning it clockwise This secures it in place 5 After installing all the detectors apply power to connect to the fire alarm control panel the SLC and program the detector into the system 6...

Page 7: ... detectors and or addressable modules on the same SLC blink check the following the connection between the SLC and the detector the control panel s program to verify that the detector is programmed correctly the SLC connections at the control panel 2 If the LEDs on the detector still do not blink return the detector to Johnson Controls for service After you set a detector into alarm by one of the ...

Page 8: ...y Test Use canned smoke to test for smoke entry High Sensitivity Setting Test For smoke free environmentally controlled applications If a sensor fails any of the tests do the following 1 Clean the sensor by following the directions under the Maintenance section of this technical bulletin 2 Retest the detector 3 If the detector fails again replace it and return it for repair After using any of thes...

Page 9: ...tector position LED 1 LED 2 Painted Surface Painted Surface Test Magnet Test Magnet Figure 3 Test Magnet Position Sensitivity Test You may initiate a sensitivity test either manually or automatically by the Intelligent Fire Controller panel if the panel is designed and UL Listed to perform such a test To verify this check the technical manual for the fire alarm control panel Smoke Entry Test Use t...

Page 10: ...as temperature humidity air flow occupancy similar to the intended application for these detectors Use an electronic history file or printer to record all events associated with the detectors under testing At the end of 90 days a Johnson Controls branch representative or end user trained by a Johnson Controls branch representative should inspect the results of the test by reviewing the data collec...

Page 11: ...e sensing chamber base see Table 1 5 Use a vacuum or clean compressed air to remove dust and debris from the sensing chamber 6 Re install the screen assembly 7 Align the arrow on the screen assembly with the arrow on the sensor that points toward the sensing chamber Push the screen down carefully until it snaps into place 8 Make sure that one of the screen contacts touches the circuit board contac...

Page 12: ... the United States Department of Health and Human Services DHHS Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968 The radiation emitted inside the smoke detector is completely within the protective housings and external covers The laser beam cannot escape from the detector during any phase of operation The Center of Devices and Radiological Health ...

Page 13: ...pability but they are better at detecting fast flaming fires than slow smoldering fires Photoelectronic detectors sense smoldering fires better than flaming fires Because fires develop in different ways and are often unpredictable in their growth neither type of detector is always best and a given detector may not always provide warning of a fire In general detectors cannot be expected to provide ...

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