1、BS EN 125:2010ICS 13.220.20; 27.060.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDFlame supervisiondevices for gasburning appliances Thermoelectric flamesupervision devicesLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 08/09/2010 03:33, Uncontrolled
2、Copy, (c) BSIThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 30 June2010 BSI 2010ISBN 978 0 580 61113 1Amendments/corrigenda issued since publicationDate CommentsBS EN 125:2010National forewordThis British Standard is the UK implementation of EN
3、125:2010. Itsupersedes BS EN 125:1991 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee GSE/22, Safety and control devices for gas and oil burnersand gas burning appliances.A list of organizations represented on this committee can be obtained onrequest to
4、 its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 08/09/2010 0
5、3:33, Uncontrolled Copy, (c) BSIBS EN 125:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 125 May 2010 ICS 27.060.20 Supersedes EN 125:1991English Version Flame supervision devices for gas burning appliances - Thermoelectric flame supervision devices Dispositifs de surveillance de flamme po
6、ur appareils brlant du gaz - Dispositifs thermolectriques de surveillance de flamme Flammenberwachungseinrichtungen fr Gasgerte - Thermoelektrische Zndsicherungen This European Standard was approved by CEN on 22 April 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations wh
7、ich stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European
8、Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the nationa
9、l standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerlan
10、d and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12
11、5:2010: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 08/09/2010 03:33, Uncontrolled Copy, (c) BSIBS EN 125:2010EN 125:2010 (E) 2 Contents Page Foreword 51 Scope 62 Normative references 63 Terms and definitions .64 Classification 74.1 Classes of control 74.2 Groups of control.74.3 Classes
12、of control functions 75 Units of measurement and test conditions .76 Construction requirements .76.1 General 76.2 Mechanical parts of the control 76.2.1 Appearance 76.2.2 Holes .76.2.3 Breather holes 86.2.4 Test for leakage of breather holes .86.2.5 Screwed fastenings .86.2.6 Jointing .86.2.7 Moving
13、 parts .86.2.8 Sealing caps .86.2.9 Dismantling and reassembly 86.3 Materials .86.3.1 General material requirements .86.3.2 Housing .86.3.3 Test for leakage of housing after removal of non-metallic parts 86.3.4 Zinc alloys 86.3.5 Springs providing closing and/or sealing force .86.3.6 Resistance to c
14、orrosion and surface protection 86.3.7 Impregnation 96.3.8 Seals for glands for moving parts96.4 Gas connections 96.4.1 Making connections 96.4.2 Connection sizes .96.4.3 Threads .96.4.4 Union joints 96.4.5 Flanges .96.4.6 Compression fittings .96.4.7 Nipples for pressure test 96.4.8 Strainers .96.5
15、 Electronic parts of the control 96.6 Protection against internal faults for the purpose of functional safety .97 Performance 107.1 General . 107.2 Leak-tightness . 107.3 Test for leak-tightness . 117.3.1 General . 117.3.2 External leak-tightness 117.3.3 Internal leak-tightness 117.4 Torsion and ben
16、ding 11Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 08/09/2010 03:33, Uncontrolled Copy, (c) BSIBS EN 125:2010EN 125:2010 (E) 3 7.5 Torsion and bending tests 117.6 Rated flow rate . 117.7 Test for rated flow rate 127.7.1 Apparatus . 127.7.2 Test procedure . 127.7.3 Conversion of air flow r
17、ate . 127.8 Durability 127.9 Performance tests for electronic controls 127.10 Long-term performance for electronic controls . 127.101 Operating torque and force 127.101.1Requirement . 127.101.2Test for operating torque and force 137.102 Interlocks 137.102.1Requirement . 137.102.2Test for interlocks
18、. 137.103 Closing current 137.103.1Requirement . 137.103.2Test for closing current 137.104 Sealing force 147.104.1Requirement . 147.104.2Test for sealing force 147.105 Endurance 147.105.1Requirement . 147.105.2Endurance test . 157.105.2.1 Static endurance test . 157.105.2.2 Dynamic endurance test .
19、158 EMC/Electrical requirements 159 Marking, installation and operating instructions . 169.1 Marking . 169.2 Installation and operating instructions . 169.3 Warning notice . 16Annex A (informative) Gas connections in common use in the various countries . 17Annex B (informative) Leak-tightness test v
20、olumetric method 18Annex C (informative) Leak-tightness test pressure loss method . 19Annex D (normative) Conversion of pressure loss into leakage rate . 20Annex E (normative) Electrical/electronic component fault modes 21Annex F (normative) Additional requirements for safety accessories and pressur
21、e accessories as defined in EU Directive 97/23/EC 22Annex G (normative) Materials for pressurized parts . 23Annex H (informative) Additional materials for pressurized parts 24Annex I (normative) Requirements for controls used in DC supplied gas burners and gas burning appliances . 25Annex AA (inform
22、ative) Types of flame supervision devices 26Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2009/142/EC relating to appliances burning gaseous fuels . 28Bibliography 30Figures Figure AA.1 Various types of thermoelectric flame supervis
23、ion device in the closed position . 26Figure AA.2 Various types of thermoelectric flame supervision device in the operating and ignition position 27Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 08/09/2010 03:33, Uncontrolled Copy, (c) BSIBS EN 125:2010EN 125:2010 (E) 4 Tables Table 1 Sequen
24、ce of testing . 10Table 2 Maximum leakage rates 10Table 3 Nominal sizes and operating torque 12Table 4 Operating cycles 15Table ZA.1 Correspondence between this European Standard and Directive 2009/142/EC relating to appliances burning gaseous fuels . 28Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA ST
25、ANDARDS, 08/09/2010 03:33, Uncontrolled Copy, (c) BSIBS EN 125:2010EN 125:2010 (E) 5 Foreword This document (EN 125:2010) has been prepared by Technical Committee CEN/TC 58 “Safety and control devices for burners and appliances burning gaseous or liquid fuels”, the secretariat of which is held by BS
26、I. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2010, and conflicting national standards shall be withdrawn at the latest by November 2010. Attention is drawn to the possibility that s
27、ome of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 125:1991. This document has been prepared under a mandate given to CEN by the European Commission and
28、the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This document is intended to be used in conjunction with EN 13611:2007. This document refers to cl
29、auses of EN 13611:2007 or adapts clauses by stating “with the following modification“, “with the following addition“, “is replaced by the following“ or “is not applicable“ in the corresponding clause. This European Standard adds clauses or subclauses to the structure of EN 13611:2007 which are parti
30、cular to this standard. It should be noted that these clauses and subclauses are not indicated as an addition. It should be noted that the following significant technical changes compared to the previous edition have been incorporated in this European Standard: a) alignment with EN 13611:2007; b) up
31、dating of Clause 2, Normative references; c) new declaration of nominal diameter and maximum inlet pressure. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, C
32、roatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: Wang Bin,
33、ISO/EXCHANGE CHINA STANDARDS, 08/09/2010 03:33, Uncontrolled Copy, (c) BSIBS EN 125:2010EN 125:2010 (E) 6 1 Scope This European Standard specifies the safety, construction and performance requirements for thermoelectric flame supervision devices, energized by a thermocouple intended for use with gas
34、 burners, gas appliances and similar use, hereafter referred to as “controls“. This European Standard is applicable to controls with declared maximum inlet pressures up to and including 500 kPa (5 bar) of nominal connection sizes up to and including DN 50 for use with one or more fuel gases in accor
35、dance with EN 437. This European Standard is not applicable to: a) the thermocouple; b) controls which use auxiliary energy (e.g. electrical energy supplied externally). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refere
36、nces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13611:2007, Safety and control devices for gas burners and gas burning appliances General requirements 3 Terms and definitions For the purposes of this d
37、ocument, the terms and definitions given in EN 13611:2007 and the following apply. 3.101 thermocouple thermoelectric flame sensing element that responds to the temperature of the supervised flame, and in which the flame effect produces an electromotive force (e.m.f.) 3.102 flame supervision device c
38、ontrol which, in response to the e.m.f. produced by the thermocouple, maintains the gas way to the main burner or the main burner and the pilot burner open and which shuts off the gas way to the main burner at least, after extinction of the supervised flame NOTE For further reference see Figure AA.1
39、 and Figure AA.2. 3.103 ignition interlock part which prevents the igniter from operating as long as the main gas way is open 3.104 re-start interlock mechanism which prevents the re-opening of the gas way to the main burner or to the main burner and the pilot burner until the armature plate has sep
40、arated from the magnetic element NOTE For further reference see Figure AA.1 and Figure AA.2. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 08/09/2010 03:33, Uncontrolled Copy, (c) BSIBS EN 125:2010EN 125:2010 (E) 7 3.105 sealing force force acting on the closure member when the closure memb
41、er is in the closed position, independent of any force provided by fuel gas pressure 3.106 closed position position of the closure member(s) in the absence of the thermoelectric energy 4 Classification 4.1 Classes of control EN 13611:2007, 4.1 is replaced by the following: Controls shall be classifi
42、ed A, B or C according to the number of operations as tested in 7.105.2.2. 4.2 Groups of control Shall be according to EN 13611:2007, 4.2. 4.3 Classes of control functions EN 13611:2007, 4.3 is not applicable. 5 Units of measurement and test conditions Shall be according to EN 13611:2007, Clause 5.
43、6 Construction requirements 6.1 General Shall be according to EN 13611:2007, 6.1 with the following addition: Controls shall shut off the gas way to the burner automatically with at least the sealing force specified in 7.104 in case of failure in the thermoelectric current. Controls shall also be de
44、signed so that during ignition either the gas way to the main burner is open, if there is no pilot burner, or the gas way to the main burner is closed and that to the pilot burner is open. 6.2 Mechanical parts of the control 6.2.1 Appearance Shall be according to EN 13611:2007, 6.2.1. 6.2.2 Holes Sh
45、all be according to EN 13611:2007, 6.2.2. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 08/09/2010 03:33, Uncontrolled Copy, (c) BSIBS EN 125:2010EN 125:2010 (E) 8 6.2.3 Breather holes EN 13611:2007, 6.2.3 is not applicable. 6.2.4 Test for leakage of breather holes EN 13611:2007, 6.2.4 is n
46、ot applicable. 6.2.5 Screwed fastenings Shall be according to EN 13611:2007, 6.2.5. 6.2.6 Jointing Shall be according to EN 13611:2007, 6.2.6. 6.2.7 Moving parts Shall be according to EN 13611:2007, 6.2.7. 6.2.8 Sealing caps Shall be according to EN 13611:2007, 6.2.8. 6.2.9 Dismantling and reassembl
47、y Shall be according to EN 13611:2007, 6.2.9. 6.3 Materials 6.3.1 General material requirements Shall be according to EN 13611:2007, 6.3.1. 6.3.2 Housing Shall be according to EN 13611:2007, 6.3.2. 6.3.3 Test for leakage of housing after removal of non-metallic parts Shall be according to EN 13611:2
48、007, 6.3.3 with the following addition: The test shall be performed in accordance with 7.3.2. 6.3.4 Zinc alloys Shall be according to EN 13611:2007, 6.3.4. 6.3.5 Springs providing closing and/or sealing force Shall be according to EN 13611:2007, 6.3.5. 6.3.6 Resistance to corrosion and surface protection Shall be according to EN 13611:2007, 6.3.6. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 08/09/2010 03:33, Uncontrolled Copy, (c) BSIBS EN 125:2010EN 125:2010 (E) 9 6.3.7 Impregnation Shall
