1、BSI Standards PublicationBS EN 1643:2014Safety and control devices forgas burners and gas burningappliances Valve provingsystems for automatic shut-offvalvesBS EN 1643:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1643:2014. Itsupersedes BS EN 1643:2000 w
2、hich is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee GSE/22, Safety and control devices for gas and oilburners and gas burning appliances.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does no
3、t purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 79918 1ICS 23.060.40Compliance with a British Standard cannot confer immunity fromlegal oblig
4、ations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2014.Amendments issued since publicationDate Text affectedBS EN 1643:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1643 March 2014 ICS 23.060.40 Supersedes EN 1643:2000
5、English Version Safety and control devices for gas burners and gas burning appliances - Valve proving systems for automatic shut-off valvesSystmes de contrle dtanchit pour robinets automatiques de sectionnement pour brleurs et appareils gaz Sicherheits-, Regel- und Steuereinrichtungen fr Gasbrenner
6、und Gasgerte - Ventilberwachungssysteme fr automatische Absperrventile This European Standard was approved by CEN on 27 December 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national s
7、tandard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version i
8、n any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
9、Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EURO
10、PEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1643:2014 EBS EN
11、 1643:2014EN 1643:2014 (E) 2 Contents Page Foreword 5 1 Scope 6 2 Normative references 6 3 Terms and definitions .6 4 Classification 8 4.1 Classes of control 8 4.2 Groups of control.8 4.3 Classes of control functions 8 5 Units of measurement and test conditions .8 5.1 Dimensions .8 5.2 Pressures 8 5
12、.3 Bending moments and torques 8 5.4 Test conditions and measurement tolerances .8 6 Construction requirements .9 6.1 General 9 6.2 Mechanical parts of the control 9 6.3 Materials .9 6.4 Gas connections 9 6.5 Electronic parts of the control 9 6.5.1 General 9 6.5.2 Protection provided by the enclosur
13、e 10 6.5.3 Electrical components . 10 6.6 Protection against internal faults for the purpose of functional safety 10 6.6.1 Design and construction requirements 10 6.6.2 Class A . 11 6.6.3 Class B . 11 6.6.4 Class C . 11 6.6.5 Circuit and construction evaluation . 13 6.101 Additional constructional r
14、equirements for VPS systems . 13 6.101.1 Signal for indication . 13 6.101.2 VPS setting 13 7 Performance 13 7.1 General . 13 7.2 Leak-tightness . 13 7.3 Test for leak-tightness . 14 7.3.1 General . 14 7.3.2 External leak-tightness 15 7.3.3 Internal leak-tightness 15 7.4 Torsion and bending 15 7.5 To
15、rsion and bending tests . 15 7.6 Rated flow rate 15 7.7 Test for rated flow rate . 15 7.8 Durability . 15 7.9 Performance tests for electronic controls . 15 7.10 Long-term performance for electronic controls 15 7.10.1 General . 15 7.10.2 Stress test 15 7.10.3 Long term performance test 16 BS EN 1643
16、:2014EN 1643:2014 (E) 3 7.101 Functional requirements . 16 7.101.1 General . 16 7.101.2 Programme sequence . 16 7.101.3 Timing . 16 7.101.4 Testing of the programme sequence and timing . 17 7.101.5 Detection limit 17 7.105.6 Self-checking . 17 7.105.7 Lock-out and reset device 18 8 EMC/Electrical re
17、quirements 18 8.1 Protection against environmental influences. 18 8.2 Supply voltage variations below 85 % of rated voltage 19 8.3 Short-term voltage interruptions and decreases . 19 8.4 Supply frequency variations 19 8.4.1 General . 19 8.4.2 Variations up to 2 % 20 8.4.3 Variations between 2 % and
18、5 % 20 8.5 Surge immunity test 20 8.6 Electrical fast transient/burst . 20 8.7 Immunity to conducted disturbances . 21 8.8 Immunity to radiated fields . 21 8.9 Electrostatic discharge immunity test 21 8.10 Power frequency magnetic field immunity test 21 8.11 Electrical requirements . 22 9 Marking, i
19、nstallation and operating instructions . 22 9.1 Marking . 22 9.2 Installation and operating instructions . 22 9.3 Warning notice . 23 Annex A (informative) Gas connections in common use in the various countries 24 Annex B (informative) Leak-tightness test volumetric method . 25 Annex C (informative)
20、 Leak-tightness test pressure loss method 26 Annex D (normative) Conversion of pressure loss into leakage rate 27 Annex E (normative) Electrical/electronic component fault modes . 28 Annex F (normative) Additional requirements for safety accessories and pressure accessories as defined in EU Directiv
21、e 97/23/EC . 30 Annex G (normative) Materials for pressurized parts 31 Annex H (informative) Additional materials for pressurized parts . 32 Annex I (normative) Requirements for controls used in DC supplied gas burners and gas burning appliances 33 I.1 Scope 33 I.2 Thermal stress test 33 I.3 Long te
22、rm performance test . 33 I.4 At ambient temperature 33 I.5 Supply voltage variations below 85 % of rated voltage 33 I.6 Short-term voltage interruptions and decreases . 33 I.7 Supply frequency, surge immunity, electrical fast transient/burst, electromagnetic conducted disturbances, power frequency m
23、agnetic field immunity test 33 I.8 Electrical transient conduction immunity for type B only 34 BS EN 1643:2014EN 1643:2014 (E) 4 Annex J (normative) Method for the determination of a Safety Integrity Level (SIL) 35 Annex K (normative) Method for the determination of a Performance Level (PL) 36 Annex
24、 L (informative) Relationship between Safety Integrity Level (SIL) and Performance Level (PL) . 37 Annex AA (informative) Application Guidance 38 AA.1 General . 38 AA.2 Use of a valve proving system 38 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements
25、of EU Directive 2009/142/EC relating to appliances burning gaseous fuels . 39 Bibliography . 41 Figures Figure 1 Illustration of detection limit and detection setting 7 Figure 2 Examples of VPS configurations 14 Tables Table E.1 Electrical/electronic component faults modes . 28 Table ZA.1 Correspond
26、ence between this European Standard and Directive 2009/142/EC relating to appliances burning gaseous fuels 39 BS EN 1643:2014EN 1643:2014 (E) 5 Foreword This document (EN 1643:2014) has been prepared by Technical Committee CEN/TC 58 “Safety and control devices for burners and appliances burning gase
27、ous or liquid fuels”, the secretariat of which is held by BSI. 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 September 2014, and conflicting national standards shall be withdrawn at the latest b
28、y March 2017. Attention is drawn to the possibility that some 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 1643:2000. This document has been prepared u
29、nder a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 2009/142/EC. For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document. This document refers to clauses o
30、f EN 13611:2007+A2:2011 or adapts it by stating “with the following modification”, “with the following addition”, “is replaced by the following” or “is not applicable” in the corresponding clause. This document adds clauses or sub-clauses to the structure of EN 13611:2007+A2:2011 which are particula
31、r to this standard, i.e. sub-clauses or annexes which are additional to those in EN 13611 are numbered starting from 101 or are designated as Annex AA, BB, CC etc. It should be noted that these clauses and sub-clauses are not indicated as an addition. If by reference to EN 13611 the term “control” i
32、s given, this term should be read as valve-proving systems. Note that the following provides details of significant technical changes between this document and the previous edition: a) Alignment with EN 13611:2007+A2:2011; b) Integration of the requirements from ISO 23551-4. According to the CEN/CEN
33、ELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, I
34、celand, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1643:2014EN 1643:2014 (E) 6 1 Scope This European Standard specifies safety, constructional and performan
35、ce requirements of valve-proving systems, hereafter referred to as VPS, intended for use with gas burners and gas-burning appliances. It also describes the test procedures for checking compliance with these requirements and provides information necessary for the purchaser and user. This European Sta
36、ndard applies to all types of VPS which are used for the automatic detection of leakage in a gas burner section having at least two valves designed in accordance with EN 161 and which give a signal if the leakage of one of the valves exceeds the detection limit. This European Standard applies to VPS
37、s with a maximum working pressure up to and including 500 kPa for use in systems using fuel gases of the 1st, 2ndor 3rdfamilies. This European Standard does not apply to VPSs for use in explosive atmospheres. This European Standard is applicable to AC and DC supplied VPS (for VPS supplied by stand-a
38、lone battery system, battery systems for mobile applications or systems which are intended to be connected to DC supply networks VPS see Annex I). Provisions for production control are not part of this European Standard. 2 Normative references The following documents, in whole or in part, are normat
39、ively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 161, Automatic shut-off valves for gas burners and gas appli
40、ances EN 1854, Pressure sensing devices for gas burners and gas burning appliances EN 13611:2007+A2:2011, Safety and control devices for gas burners and gas burning appliances - General requirements EN 14459:2007, Control functions in electronic systems for gas burners and gas burning appliances - M
41、ethods for classification and assessment EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN 60730-1:2011, Automatic electrical controls for household and similar use Part 1: General requirements (IEC 60730-1:2010, modified) EN 60730-2-5:2002, Automatic electric
42、al controls for household and similar use Part 2-5: Particular requirements for automatic electrical burner control systems (IEC 60730-2-5:2000, modified) EN 60947-5-1:2004, Low-voltage switchgear and controlgear Part 5-1: Control circuit devices and switching elements Electromechanical control circ
43、uit devices (IEC 60947-5-1:2003) EN 61810-1, Electromechanical elementary relays Part 1: General requirements (IEC 61810-1) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13611:2007+A2:2011 and the following apply. BS EN 1643:2014EN 1643:2014 (E) 7 3
44、.101 valve proving system VPS system to check the effective closure of automatic shut-off valves by detecting leakage, that often consists of a programming unit, a measuring device, valves and other functional assemblies 3.102 VPS programming unit unit which follows a predetermined sequence of valve
45、 proving actions 3.103 detecting device device for direct or inferential detection of leakage EXAMPLE Leakage is detected by measuring flow or pressure. 3.104 VPS operational time time taken by the VPS to perform its entire cycle of operation 3.105 detection limit maximum amount of leakage that can
46、occur before the VPS is required to give a signal Note 1 to entry: See Figure 1. 3.106 detection setting actual leakage rate at which the VPS gives a signal Note 1 to entry: See Figure 1. Key X burner heat, gas flow, expressed in m3/h Y detected leakage rate, expressed in dm3/h 1 detection limit, se
47、e 3.105 2 detection setting, see 3.106 Figure 1 Illustration of detection limit and detection setting BS EN 1643:2014EN 1643:2014 (E) 8 3.107 leakage testing time time in which the VPS monitors a gas valve for leakage 3.108 safety shut-down process which is effected immediately following the detecti
48、on of a leakage exceeding the detection limit, or detection of an internal fault, disabling energisation of the ignition and of the automatic shut-off valves 3.109 volatile lock-out safety shut-down condition of the system where a restart can only be accomplished by either the manual reset of the sy
49、stem, or an interruption of the main power and its subsequent restoration 3.110 non-volatile lock-out safety shut-down condition of the system, where a restart can only be accomplished by the manual reset of the system and by no other means 4 Classification 4.1 Classes of control EN 13611:2007+A2:2011, 4.1 is not applicable. 4.2 Groups of control Shall be according to EN 13611:2007+A2:2011, 4.2. 4.3 Classes of control functions Shall be according to EN 13611:2007+A2:2011, 4.3 with the following addition: The valve proving system for automatic s
