DRD-E Conventional Infrared Flame Detector Installation Manual
Contents
1. gt Direct sunlight or its reflected light by puddle glass or mirror surface of metal gt Spot lighting directly on the detector optics 2 3 0 1376 ISS1 NOV10 fe 2010 Hochiki Europe UK Ltd DRD E Flame Detector Installation Manual Page 7 of 12 3 Quantities and Positioning The number of detectors required and their position depends on gt the anticipated size of the flame gt the distance of the flame from the detector gt the angle of view of the flame detector The DRD E flame detector is designed to have a class 1 performance as defined in BS EN54 10 on the high sensitivity setting That is the ability to detect an n heptane yellow fire of 0 1m or methylated spirit clear fire of 0 25m at a distance of up to 25m within 30 seconds In fact the DRD E flame detector will detect fires at distances of up to 40 metres but the flame size at such distances needs to be proportionally greater in order to be sure of reliable detection Thus the yellow flickering flame that can be detected at 25m provided that its size is not less than 0 1m will have to be 0 4m in order to be detected at 40metres In a rectangular room the distance from the flame detector to the fire is calculated by the formula Maximum distance VL W H Width Length Fig 3 Calculation of distance from detector to flame 2010 Hochiki Europe UK Ltd f 2 3 0 1376 ISS1 NOV10 DRD E Flame Detector Installation Man2. 0 1376 ISS1 NOV10 fe 2010 Hochiki Europe UK Ltd DRD E Flame Detector Installation Manual Page 11 of 12 4 1 Functional Testing A portable flame detector test unit is available to generate simulated flame behaviour Fig 10 To test the detector the test unit needs to be within 600mm of the DRD E flame detector The DRD E incorporates a 15 second delay to help filter out any transient IR sources that may occur Between each test the DRD E flame detector will need to be left for minute to allow for stabilisation If itis safe to do so a naked flame could also be used to test the DRD E flame detector please ensure that the flame is not exposed directly to the outer casing or lens as damage may occur Fig 10 Portable Flame Detector Test Unit 4 2 Service amp Repairs Servicing of the fire protection system should be carried out by competent persons familiar with this type of system or as recommended by the local regulations in force Only the manufacturer or equivalent authorised body may carry out repairs to the flame detectors In practical terms this means that flame detector may be repaired only at the manufacturer s factory 2010 Hochiki Europe UK Ltd fe 2 3 0 1376 ISS1 NOV10 Page 12 of 12 DRD E Flame Detector Installation Manual 5 Detector Specifications Ordering code DRD E Operating voltage 15 30 Vdc Nominal rating 24Vdc Standby current 70 UA at 24Vdc Delay t
3. dust or oil the sensitivity to flames may decrease To remove the contamination use a damp cloth please ensure to remove any excess moisture with a dry cloth NOTE Do not wipe the main body of the detector window with alcohol or benzine 2010 Hochiki Europe UK Ltd fe 2 3 0 1376 ISS1 NOV10 Page 10 of 12 DRD E Flame Detector Installation Manual 4 Installation The DRD E flame detector can be used in conjunction with the following mounting bases YBN R 6 YBO R 6R YBO R 6RN YBO R 6PA YBN R 6SK and YBN R 6RS A wall and ceiling mounting bracket are available if required these should be ordered separately Please refer to Fig 7 and Fig 8 below Fig 6 Installation with Mounting Base oom om Ly U p YZU B YZU A Fig 7 Installation with ceiling bracket YZU A Fig 8 Installation with wall bracket YZU B with YZU A A Zone ve B Zone ve C Cable Screen YBN R 6 YBO R 6R YBO R 6PA YBN R 6SK YBO R 6RS YBO R 6RN RC Relay Contacts a flying lead on either terminal 7 or 8 selects either N C or N O supplied as N C Remote Indicator fd Fig 9 Connection to Conventional Control Panel via CDX Mounting Bases 2 3
4. DRD E Conventional Infrared Flame Detector Installation Manual fe HOCHIKI Page 2 of 12 DRD E Flame Detector Installation Manual This manual details the installation of DRD E Flame Detector If you have any queries regarding these products or their functionality please contact gt Hochiki Europe UK Limited Grosvenor Road Gillingham Business Park Gillingham Kent ME8 OSA gt Tel 44 0 1634 260133 gt Fax 44 0 1634 260132 gt Web http www hochikieurope com gt Email psupport hochikieurope com C DRD E 0832 CPD 1347 10 EN54 10 Flame detectors point detectors 2010 Hochiki Europe UK Ltd All rights reserved No part of this document may be reproduced stored in a retrieval system or transmitted in any form or by any means without the prior permission in writing of Hochiki Europe UK Ltd Hochiki Europe UK Limited reserves the right to alter the specifications of its products from time to time without notice Although every effort has been made to ensure the accuracy of the information contained in this document it is not warranted or represented by Hochiki Europe UK Limited to be a complete and up to date description Document Details Title DRD E Flame Detector Installation Manual Issue 1 0 Issue Date November 2010 Part No 2 3 0 1376 2 3 0 1376 ISS1 NOV10 fe 2010 Hochiki Europe UK Ltd DRD E Flame Detector Installation Manual Page 3 of 12 Table of Cont
5. It will then send an alarm signal to the fire panel via a switching circuit 2010 Hochiki Europe UK Ltd fe 2 3 0 1376 ISS1 NOV10 Page 6 of 12 DRD E Flame Detector Installation Manual 2 Application Flame detectors are used when detection is required to be gt Unaffected by convection currents draughts or wind gt Tolerant of fumes vapours dust and mist gt Fast reacting 2 1 Detectable Fire Sources gt Liquids Aviation Fuels kerosene Ethanol Methylated Spirits n Heptane Paraffin Petrol gasoline gt Solids Coal Cotton Grain amp Feeds Paper Refuse Wood gt Gases Butane Natural Gas Off Gas Propane 2 2 Typical Applications gt Coal handling plant gt Aircraft hangars gt Atria gt Automotive industry spray booths parts manufacture gt Paper manufacture gt Pharmaceutical gt Engine rooms gt Generator rooms gt Metal fabrication gt Waste handling gt Woodworking gt Power plants gt Textiles gt Transformer stations gt Petrochemical 2 3 Applications and Locations to Avoid gt Ambient temperatures above 50 C gt Dusty or steamy atmospheres gt Atmospheres containing corrosive gases gt Where condensation exists gt In the vicinity of large IR sources such as heaters burners flares gt Close proximity to RF sources gt Obstructions to field of view gt Exposure to weather gt Large amounts of flickering reflections
6. cies This enables the detector to avoid false alarms due to such factors as flickering light sources 1 2 Alarm Response Modes The detector is normally configured to latch into an alarm state when a flame is detected The supply to the detector has to be removed in order to reset the detector 1 3 IR Detection Basics Flame detectors are classified into two types by their principle of detection UV detectors are sensitive to ultraviolet and IR detectors are sensitive to infrared This DRD E detector can detect IR radiated from flames Flames radiated from a fire have an IR peak emission of 4 3um occurring during the CO2 formation due to the combustion of hydrocarbons from 2 to 15 Hz HEAD BASE 60 Alarm indicator Red 84 100 Sapphire glass 37 3 45 3 Fig 1 External View of DRD E 2 3 0 1376 ISS1 NOV10 fe 2010 Hochiki Europe UK Ltd DRD E Flame Detector Installation Manual Page 5 of 12 1 0 Resonance frequency of CO2 0 8 c E 2 GG 0 6 O Oo Cc Q 3 04 D 5 oO 0 2 0 0 2 0 2 5 3 0 3 5 40 4 5 5 0 5 5 6 0 Wavelength um Fig 2 Spectrum of white gas flame The pyroelectric device fitted within the DRD E detector can detect CO2 formation during combustion through an optical filter The output is amplified from 2 to 15 Hz The DRD E detector will then make a fire decision using an AC DC converter comparator and capacitor
7. ents Te EC TE 4 1 1 MEN 6 10 EE 4 1 2 Alarm RESpOnS6 MOGCS asiiesesscdeccteceveceiesseeatecaversieasdeecteceverstesstiec teva versdenadveciive seeders deeg 4 1 3 ege ee 4 Ne e EE 6 2 1 Rare 6 2 2 TYDPICASAD PIC ee 6 2 3 Applications and Locations to Avold 6 3 Quantities and Positioning ssssssss ssssssssssssssnssssssnnsnnnnnsnss ann nnnnnRA ARA R ARR R RR AAA RANN R RANKAR ARR nnaman na 7 3 1 Field or VIEW siiin itning aa a aE AAN A ANEAN ENE EKANU aE a 8 3 2 Detector Window Contamination 1 ini anna aA EEEE EEEE EKEREN ere EE 9 3 2 1 RE rte EE 9 G WT E EI ON D 10 4 1 UNCUONal ee HEI 11 4 2 Sevice amp DEET aREEAERKREEAEEEKRRESEEEREEREEELREESEEEREEREEEKEEESEEEREEREEEKEREAEEERREERKEEERREAEEEEREERKEEKRREAEEERREERKEE 11 5 Detector Specifications ssss sssssssssssssssssssssnnssnnnrsssan nns nK ARR R NAR RANA ARA R ARR RANKAR RANA RAR ARR R ARR RR RR RR Rn nn 12 5 1 Compatible Bases vvecceccsssseeuscecetenshessteuncunedenehoes tins an an aan a kens ns anei an enu bnn abia 12 2010 Hochiki Europe UK Ltd fe 2 3 0 1376 ISS1 NOV10 Page 4 of 12 DRD E Flame Detector Installation Manual 1 General 1 1 Description The flame detector is designed for use where open flaming fires may be expected It responds to the light emitted from flames during combustion The detector discriminates between flames and other light sources by responding only to particular optical wavelengths and flame flicker frequen
8. ime 15 to 21 Second Detection angle 90 Cone Infrared sensitivity range Class 1 0 1m n heptane at 25m Maximum current in alarm state 40mA Remote indicator drive max 20mA Operating temperature range 10 C to 50 C Maximum humidity 95 RH Non condensing at 40 C Colour and case material White Ivory ABS Weight 125g 5 1 Compatible Bases Order Code Function YBN R 6 Common Mounting Base YBN R 6SK Common Mounting Base c w Schottky Diode YBO R 6RN Non Latching Relay Base YBO R 6RS Latching Relay Base c w Schottky Diode YBO R 6PA For use with compatible 2 Wire systems YBO R 6R Latching Relay Base NOTE Alarm control panel compatibility is required for certain base types 2 3 0 1376 ISS1 NOV10 fe 2010 Hochiki Europe UK Ltd
9. ual Page 8 of 12 3 1 Field of View The DRD E flame detector has a field of view of approximately 90 as shown in the diagram below Fig 4 Conical field of view of the flame detector Centre line of detector 0 4m flame seen at 40m SCH 0 riese E Weg 7 7 EE Dim flame seen at 25m ee 45 60 lt 60 75 175 90 90 0 25m 40m Detector Fig 5 Detector Field of View Plot The DRD E flame detector should be positioned at the perimeter of the room pointing directly at the anticipated flame or at the centre of the area to be protected If the detector cannot see the whole of the area to be protected one or more additional detectors may be required The DRD E flame detector is not affected by normal light sources but should be positioned so that sunlight does not fall directly onto the viewing window E 2010 Hochiki Europe UK Ltd 2 3 0 1376 ISS1 NOV10 DRD E Flame Detector Installation Manual Page 9 of 12 3 2 Detector Window Contamination It is important to keep the detector window clean and checks should be carried out at regular intervals determine locally according to the type and degree of contamination encountered to ensure optimal performance of the DRD E flame detector Although IR detectors can detect flames when the window is contaminated there may be a reduction of sensitivity 3 2 1 Cleaning If the window of the DRD E flame detector is coated with
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