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Fire Initiating Devices and Notification Appliances Technical Manual

408

Intelligent Products Section

Technical Bulletin

Issue Date

1095

1995 Johnson Controls, Inc.

Code No. LIT-408065

Introduction

Page

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General Description

Installation Procedures

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General Information

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Spacing

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Wiring Installation Guidelines

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Installation

●

Tamper-Proof Feature

Testing and Maintenance Procedures

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Testing

●

Maintenance

●

Limitations

2251J Plug-In Low Profile

Intelligent Photoelectronic Smoke Detector

Summary of Contents for 2251J

Page 1: ...Controls Inc 1 Code No LIT 408065 Introduction Page 3 General Description 4 Installation Procedures 7 General Information 7 Spacing 7 Wiring Installation Guidelines 7 Installation 8 Tamper Proof Feature 9 Testing and Maintenance Procedures 11 Testing 11 Maintenance 14 Limitations 16 2251J Plug In Low Profile Intelligent Photoelectronic Smoke Detector ...

Page 2: ...2 Intelligent Products 2251J Plug In Low Profile Intelligent Photoelectronic Smoke Detector ...

Page 3: ...ke Detectors Technical Bulletin in the Fire Initiating and Notification Appliances Devices Manual FAN 408 which provides detailed information on detector spacing placement zoning wiring and special applications or for non United States installations applicable codes and standards specific to country and locality of installation Failure to follow these directions may result in failure of this devic...

Page 4: ...l panel when the blink feature is enabled in the system programming of the control panel When the detector is in alarm the LEDs are latched into a constant On condition When the system and the detector is reset after an alarm the LEDs will return to the normal blink mode if programmed Note that only five detectors on any one SLC can latch on the detector LEDs in the alarm condition However if the ...

Page 5: ...10LPJ Base 4 1 in 104 mm in B501 Base Weight 3 6 oz 102 g Air Velocity Range 0 to 4000 feet per minute Accessories Part Number Flangeless Adapter Base B501J Flanged Adapter Base B210LPJ Detector Base with Control Relay B224RBJ Isolator Detector Base B224BIJ Retrofit Replacement Flange for B501BJ Base F110 Remote LED Annunciator RA400Z Detector Sensitivity Test Tool MOD400R Surface Mounting Kit SMK...

Page 6: ...tifier located as the last digit of the five digit code stamped on the base of the product Connect detectors only to compatible control units as indicated in Johnson Controls compatibility chart which contains a list of UL Listed control units and detectors See the Device Compatibility Technical Bulletin located in the Fire Management Accessories Manual FAN 445 ...

Page 7: ...o higher than 10 feet Room configuration and operating environment may require a reduction in the standard maximum 900 square foot coverage for each detector All wiring must be installed in compliance with all applicable local codes ordinances and any special requirements of the authority having jurisdiction Proper wire gauges should be used The installation wires should be color coded to limit wi...

Page 8: ...g the detector clockwise to lock it in place 6 Enable the tamper proof feature For instructions see the Tamper Proof Feature section of this technical bulletin 7 After all detectors have been installed apply power to the SLC or control unit 8 Remove the detector dust cover if the operating environment is free of excessive dust as is typically encountered during construction 9 Test the detector by ...

Page 9: ...o remove the detector from the bracket once it has been made tamper proof 1 Use a pocket screwdriver or similar tool and depress the tamper proof tab located in the slot on the mounting bracket 2 Turn the detector counterclockwise until it separates from the base See the applicable detector base data for the location of the tamper proof break off tab and the location of the tool insertion point re...

Page 10: ...10 Intelligent Products 2251J Plug In Low Profile Intelligent Photoelectronic Smoke Detector ...

Page 11: ...ctors Upon completion of maintenance and any subsequent testing enable any system functions previously disabled for maintenance and notify the authorities that the system has been returned to normal service Before you check each detector Check and make sure the LEDs blink If they do not blink and LEDs on other detectors and or modules on the same SLC blink Check the connection between the SLC and ...

Page 12: ...s ts wc7 LED 1 Test Module Socket LED 2 Test Magnet Test Magnet Painted Surface D o N o t P a i n t Figure 4 Test Magnet Positioning Sensitivity Test Module MOD400R or MOD400 A sensitivity test module socket Figure 4 is provided for checking the detector s sensitivity with the MOD400R or MOD400 test module supplied separately The test module is used with a digital or analog voltmeter to check the ...

Page 13: ...placed and returned for repair You can test all of the intelligent detectors programmed in the system by issuing a command at the control panel This test checks if the detectors are communicating with the control panel if the detectors are in the proper sensitivity range for any detectors that are in alarm for any detectors that are reporting a trouble condition The test can be performed while the...

Page 14: ...e detector screen 6 Pull the screen straight away from the sensing chamber until it snaps out of place Replacement screens are available A4176 00 7 Use a vacuum or clean compressed air to remove dust and debris from the sensing chamber 8 Reinstall or replace the sensing chamber screen by sliding the edge without the tabs over the sensing chamber 9 Make sure that one of the screen contacts touches ...

Page 15: ...telligent Products 2251J Plug In Low Profile Intelligent Photoelectronic Smoke Detector 15 testsw10 Sensor Cover Cover Removal Tabs Sensing Chamber Sensor Screen Figure 5 Removal of the Cover for Cleaning ...

Page 16: ...cting 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 warnings for fires resulting from in...

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