Metasys 2400AIT Technical Bulletin Download

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Fire Initiating Devices and Notification Appliances Technical Manual

408

Conventional Products Section

Technical Bulletin

Issue Date

1095

1995 Johnson Controls, Inc.

Code No. LIT-408145

Introduction

Page

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General Description

Installation Procedures

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General Information

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Mounting

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Spacing

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Wiring Installation Guidelines

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Installation

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Tamper-Proof Feature

Testing and Maintenance Procedures

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Testing

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Maintenance

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Limitations of Smoke Detectors

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Limitations of Sounders

2400AT and 2400AIT Direct 2-Wire Smoke Detector

Summary of Contents for 2400AIT

Page 1: ...e No LIT 408145 Introduction Page 3 General Description 4 Installation Procedures 7 General Information 7 Mounting 7 Spacing 8 Wiring Installation Guidelines 8 Installation 9 Tamper Proof Feature 10 Testing and Maintenance Procedures 11 Testing 11 Maintenance 13 Limitations of Smoke Detectors 15 Limitations of Sounders 16 2400AT and 2400AIT Direct 2 Wire Smoke Detector ...

Page 2: ...2 Conventional Products 2400AT and 2400AIT Direct 2 Wire Smoke Detector ...

Page 3: ...o the model you are installing Before you install any 2400AT and 2400AIT direct wire detectors read and be familiar with The Guide for Proper Use of System Smoke Detectors Technical Bulletin in the Fire Initiating Devices and Notification Appliances Technical Manual FAN 408 that provides detailed information on detector spacing placement zoning wiring and special applications or for non United Sta...

Page 4: ...age polarity is reversed A Light Emitting Diode LED on each detector lights to provide a local alarm indication When the control panel receives the alarm signal the supply polarity is reversed on the system to sound all the devices Once the signal circuit is deactivated the polarity is reset to the original state A screw terminal is provided for a remote LED annunciator optional accessory RA400Z T...

Page 5: ...nterrupted tone when in alarm or supply voltage polarity is reversed Detector Sensitivity Setting 3 0 0 7 Ft Fixed Temperature Heat Detector 135 F 57 C Electrical Ratings System Voltage 24 VDC Maximum Ripple Voltage 4 volts Peak to Peak Reset Voltage 2 5V Reset Time 0 3 Seconds Start up Capacitance 0 02 µF Maximum Startup Time 36 Seconds Maximum Voltage Limits 10 to 32 VDC Current Limits Standby 1...

Page 6: ...6 Conventional Products 2400AT and 2400AIT Direct 2 Wire Smoke Detector ...

Page 7: ...mounting bracket kit that permits it to be mounted in either of two ways directly to a 3 inch 76 2 mm octagonal 4 inch 101 6 mm octagonal or 1 1 2 inch 38 1 mm deep electrical box Figures 1 and 2 to a 4 inch 101 6 mm square electrical box using a plaster ring with the mounting bracket kit supplied flmount2 Figure 1 Flush Mounting of Detector on 4 Inch Octagonal Box Tamper Resistant Tab mountbrk To...

Page 8: ...etectors as well as the control panel it is recommended that the wire be no smaller than No 18 American Wire Gauge AWG 1 0 square mm However the screws and clamping plate in the base can accommodate wire sizes up to No 12 AWG 3 3 square mm For best system performance the power and wires should be a twisted pair and installed in a separate grounded conduit or shielded cable to protect the IDC from ...

Page 9: ... arrows on the mounting bracket 3 Turn the detector clockwise until it clicks into place 4 Enable the tamper proof feature For instructions see the Tamper Proof Feature section of this technical bulletin Rem ote Annunciator smkwire3 2 1 3 UL Listed 2 W ire Panel Rem ote Annunciator 2 1 3 Panel M F GRS Suggested End of Line EO L Resistor Rem ote Annunciator sm kwire4 2 1 3 R em ote Annunciator 2 1 ...

Page 10: ...ing bracket can make the detector tamper proof by using a pocket screwdriver or similar tool to detach the detector from the bracket To make the detector tamper proof 1 Use needle nose pliers to break the smaller tab at the scribed line on the tamper proof tab Figure 5 Tam per P roof S lot dirwirtm Mounting Bracket Mounting S crew Mounting S crew Figure 5 Enabling the Tamper Proof Feature To remov...

Page 11: ...e testing any additional detectors After all testing is complete notify the proper authorities the system is back in service Recessed Test Switch 1 Push and hold the recessed test switch with a 0 1 inch maximum diameter tool such as a pocket screwdriver 2 The LED on the detector should light and report an alarm condition to the control panel on the IDC within five seconds 3 The piezo horn should a...

Page 12: ...r to represent 4 ft to 5 ft obscuration as described in the aerosol generator manual 2 Using the bowl shaped applicator apply aerosol until the unit alarms Direct Heat Method Hair dryer of 1000 1500 watts 1 Direct the heat toward the bimetallic collector 2 Hold the heat source about 12 inches from the detector in order to avoid damage to the plastic 3 When the heat rises to greater than 135 F the ...

Page 13: ...the side slot of the detector cover 2 Twist it until the cover can be turned counterclockwise for removal 3 Vacuum the screen carefully without removing it If further cleaning is required continue with Step 4 otherwise skip to Step 9 4 Remove the screen by pulling it straight out 5 Vacuum the inside 6 Clean the vaned chamber piece by vacuuming out dust and particles 7 To replace the screen orient ...

Page 14: ...14 Conventional Products 2400AT and 2400AIT Direct 2 Wire Smoke Detector covscr5 Removable Head Cover Cleanable Screen P N RS24T Test Slot Removal Slot Figure 7 Removal of Cover and Screen for Cleaning ...

Page 15: ...ization detectors offer a broad range fire sensing capability 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 fir...

Page 16: ...alcoholic beverages The sounder may not be heard if it is placed in an area which is isolated by a closed door located on a different floor from the person in hazard or placed too far away to be heard over the ambient noise such as traffic air conditioners machinery or music appliances that may prevent alert persons from hearing the alarm The sounder may not be heard by persons who are hearing imp...

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