DIN EN 14459-2016 Safety and control devices for burners and appliances burning gaseous or liquid fuels - Control functions in electronic systems - Methods for classification and a.pdf

1、February 2016 English price group 18No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 91.140.40; 97.100.20!%LS4“24148

2、17www.din.deDIN EN 14459Safety and control devices for burners and appliances burning gaseous or liquid fuels Control functions in electronic systems Methods for classification and assessment;English version EN 14459:2015,English translation of DIN EN 14459:2016-02Sicherheits- und Regeleinrichtungen

3、 fr Brenner und Brennstoffgerte fr gasfrmige oder flssige Brennstoffe Regel- und Steuerfunktionen in elektronischen Systemen Verfahren fr die Klassifizierung und Bewertung;Englische Fassung EN 14459:2015,Englische bersetzung von DIN EN 14459:2016-02Dispositifs de commande et de scurit pour brleurs e

4、t appareils utilisant des combustibles gazeux ou liquides Fonctions de commande des systmes lectroniques Mthodes de classification et dvaluation;Version anglaise EN 14459:2015,Traduction anglaise de DIN EN 14459:2016-02SupersedesDIN EN 14459:2008-02 andDIN EN 14459 Corrigendum 1:2010-05www.beuth.deD

5、ocument comprises 44 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.03.16 DIN EN 14459:2016-02 2 A comma is used as the decimal marker. National foreword This document (EN 14459:2015) has been prepared by Technical Committee C

6、EN/TC 58 “Safety and control devices for burners and appliances burning gaseous or liquid fuels” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was DIN-Normenausschuss Heiz- und Raumlufttechnik (DIN Standards Committee Heating and Ventilation Technology),

7、 Working Committee NA 041-03-10 AA Sicherheits- und Regeleinrichtungen fr wrmeerzeugende Gerte und Anlagen (SpA CEN/TC 58, CEN/TC 58/WG 11 und ISO/TC 161). Amendments This standard differs from DIN EN 14459:2008-02 and DIN EN 14459 Corrigendum 1:2010-05 as follows: a) the methods for classification

8、and risk assessment have been rendered more precise; b) the methods are now described starting on appliance level; c) controls for burners and appliances burning liquid fuels (electronic) have been added; d) the following new informative annexes based on the determination of basic risks have been in

9、troduced: Annex AA “Example of a risk assessment method”, Annex BB “Example of a risk assessment with the method described in Annex AA” (former Annex M), Annex CC “Realisation of a protective measure”, Annex DD “Hazards in gas and oil appliances handled by control functions” and Annex EE “Classifica

10、tion of control functions based on the determination of basic Annex EE “Classification of control functions”; e) the following annexes, which are to be included into a new standard on temperature control functions (TCF) in CEN/TC 58, have been deleted: Annex I “Combustion product discharge function

11、(TTB)”, Annex K “Temperature control functions (TCF)”, Annex N “Control standards for gas burners and gas burning appliances”; f) Annex L “Gas shut-off function” has been deleted (the content has been moved into EN 161); g) the former Annex O “Examples of new solutions” has been deleted (the content

12、 has been moved into EN 161). Previous editions DIN V ENV 1954: 1996-08 DIN V ENV 14459: 2003-05 DIN EN 14459: 2008-02 DIN EN 14459 Corrigendum 1: 2010-05 - EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14459 November 2015 ICS 91.140.40; 97.100.20 Supersedes EN 14459:2007English Version Safet

13、y and control devices for burners and appliances burning gaseous or liquid fuels - Control functions in electronic systems - Methods for classification and assessment Dispositifs de commande et de scurit pour brleurs et appareils utilisant des combustibles gazeux ou liquides - Fonctions de commande

14、des systmes lectroniques - Mthodes de classification et dvaluation Sicherheits- und Regeleinrichtungen fr Brenner und Brennstoffgerte fr gasfrmige oder flssige Brennstoffe - Regel- und Steuerfunktionen in elektronischen Systemen - Verfahren fr die Klassifizierung und Bewertung This European Standard

15、 was approved by CEN on 19 September 2015. 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 standard without any alteration. Up-to-date lists and bibliographical references concerning s

16、uch 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 in any other language made by translation under the responsibility of a CEN member into its o

17、wn 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 Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,

18、 Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NOR

19、MUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14459:2015 EEN 14459:2015 (E) 2 Contents Page European foreword . 5 1 Scope 7 2 Normative references 7 3 Ter

20、ms and definitions . 7 4 Classification . 7 4.1 Classes of control . 7 4.2 Groups of control . 7 4.3 Classes of control functions . 7 4.4 Types of DC supplied controls 7 5 Units of measurement and test conditions 7 6 Construction requirements . 7 6.1 General 7 6.2 Mechanical parts of the control . 8

21、 6.3 Materials . 8 6.4 Gas connections . 8 6.5 Electrical parts of the control . 8 6.6 Protection against internal faults for the purpose of functional safety 8 6.101 Requirements for new control solutions 8 6.101.1 General 8 6.101.2 Assessment of the appliance . 8 6.101.3 Translation to control req

22、uirements. 9 7 Performance 9 7.1 General 9 7.2 Leak-tightness 9 7.3 Torsion and bending 9 7.4 Rated flow rate . 9 7.5 Durability . 9 7.6 Performance test for electronic controls . 9 7.7 Long-term performance for electronic controls 9 7.8 Data exchange. 9 7.101 Combined apparatus . 10 8 Electrical re

23、quirements . 10 8.1 General . 10 8.2 Protection by enclosure . 10 9 Electromagnetic compatibility (EMC) . 10 9.1 Protection against environmental influences . 10 9.2 Supply voltage variations below 85 % of rated voltage . 10 9.3 Voltage dips and interruptions . 10 9.4 Supply frequency variations 10

24、9.5 Surge immunity tests 10 9.6 Electrical fast transient/burst . 10 9.7 Immunity to conducted disturbances induced by radio frequency fields . 10 9.8 Immunity to radiated disturbances induced by radio frequency fields. 10 9.9 Electrostatic discharge test 10 9.10 Power frequency magnetic field immun

25、ity tests 10 9.11 Harmonics and interharmonics including mains signalling at a. c. power port, low frequency immunity tests . 11 10 Marking, installation and operating instructions 11 DIN EN 14459:2016-02 EN 14459:2015 (E) 3 10.1 Marking 11 10.2 Installation and operating instructions . 11 10.3 Warn

26、ing notice 11 Annex A (informative) Abbreviations and symbols 12 Annex B (informative) Leak-tightness test for gas controls Volumetric method 13 Annex C (informative) Leak-tightness test for gas controls Pressure loss method 14 Annex D (normative) Conversion of pressure loss into leakage rate . 15 A

27、nnex E (normative) Electrical/electronic component fault modes 16 Annex F (normative) Additional requirements for safety accessories and pressure accessories as defined in EU Directive 97/23/EC . 17 Annex G (normative) Materials for pressurised parts . 18 Annex H (normative) Additional materials for

28、 pressurised parts. 19 Annex I (normative) Requirements for controls used in DC supplied burners and appliances burning gaseous or liquid fuels . 20 Annex J (normative) Method for the determination of a Safety Integrity Level (SIL) . 21 Annex K (normative) Method for the determination of a Performan

29、ce Level (PL) . 22 Annex L (informative) Relationship between Safety Integrity Level (SIL) and Performance Level (PL) 23 Annex M (normative) Reset functions 24 Annex N (informative) Guidance document on environmental aspects 25 Annex O (normative) Seals of elastomer, cork and synthetic fibre mixture

30、s 26 Annex AA (informative) Example of a risk assessment method . 27 Annex BB (informative) Example of a risk assessment according to method described in Annex AA 29 BB.1 Introduction . 29 BB.2 Risks 29 BB.3 Risk assessment 29 Annex CC (informative) Realisation of a protective measure 32 Annex DD (i

31、nformative) Hazards in gas and oil appliances handled by control functions 34 Annex EE (informative) Classification of control functions based on the determination of basic risks . 38 Bibliography . 42 Tables Table BB.1 Example of risk assessment 30 Table DD.1 Gas and oil burning process and safety

32、control functions. 35 Table EE.1 Classification of parameter S 40 Table EE.2 Classification of parameter O . 41 Table EE.3 Classification of parameter D . 41 Table EE.4 Classification result = S + O + D . 41 DIN EN 14459:2016-02 EN 14459:2015 (E) 4 Figures Figure AA.1 Example of a risk assessment me

33、thod . 27 Figure BB.1 Common systems for C4Types, examples of risk assessment . 29 Figure CC.1 Layers of a safety system 32 DIN EN 14459:2016-02 EN 14459:2015 (E) 5 European foreword This document (EN 14459:2015) has been prepared by Technical Committee CEN/TC 58 “Safety and control devices for burn

34、ers and appliances burning gaseous 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 May 2016, and conflicting national standards shall be

35、withdrawn at the latest by May 2016. 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 14459:2007. Control s

36、ystems are designed to control and protect gas and/or oil appliances and the combustion process. All functions are performed depending on their safety relevance within a specific tolerance of measures and time with a specific certainty under external influences and internal failures. It was conclude

37、d by CEN/TC 58 that it is not always necessary to protect against the consequences of hazardous events with uniform measures as hazards differ in severity and the probability of unwanted occurrences may differ. As there exist large differences of interpretation on what level of protection is necessa

38、ry against certain hazards, there is a need for guidance to bring the safety philosophy for gas and oil appliances and controls in line. The discussions of CEN/TC 58 regarding safety related control functions and the use of controls systems in the appliances show that it is worthwhile to refine the

39、basic safety philosophy of gas and oil appliances into different risk levels. For the evaluation of preventative measures concerning fault tolerance and avoidance of hazards, it is essential to classify control functions with regard to their fault behaviour. For the classification of control functio

40、ns, their integration into the complete safety concept of the appliance should be taken into account. In the appliance standards, only specific fault conditions are considered when controls conforming to CEN/TC 58 standards are used, e.g. flame simulation and air proving before each new start. In so

41、me cases (e.g. switch contacts) shorting is excluded, when certain tests have proven that the probability of a fault occurrence is low. For gas valves, a single shut-off valve is considered insufficient. This standard will give methods for the assessment of products in the field of gas and oil appli

42、cations and control solutions for which no specific product standards are actually available. The assessment is described in three steps: assessment of the application, translation into control requirements, assessment of the control solution, leading to a defined safety class and a set of safety me

43、asures with additional/modified construction and test requirements for the application and/or the specified control function. The assessment is focused on the controlled parameters (e.g. high/low temperature, pressure, flow, combustion quality) in the combustion process and in the functionality of t

44、he controls (e.g. open/closed; lock/unlock; start/stop). Each control function needs to be classified according to the required safety aspects (Class A, B, C). To analyse the effect of fault conditions it is essential to know the specific application and the related risk. It should be noted that the

45、 following significant editorial changes compared to the previous edition have been incorporated in this European Standard: DIN EN 14459:2016-02 EN 14459:2015 (E) 6 a) methods for classification and risk assessment are more detailed; b) methods are described starting on appliance level; c) controls

46、for burners and appliances burning liquid fuels (electronic) added; d) introduction of new informative annexes based on the determination of basic risks: Annex AA “Example of a risk assessment method“, Annex BB “Example of a risk assessment with the method described in Annex AA“ (former Annex M), An

47、nex CC “Realisation of a protective measure“, Annex DD “Hazards in gas and oil appliances handled by control functions“ and Annex EE “Classification of control functions based on the determination of basic Annex EE “Classification of control functions“. e) deletion of the following annexes which sha

48、ll be included into a new standard on temperature control functions (TCF) in CEN/TC 58: Annex I “Combustion product discharge function (TTB)“, Annex K “Temperature control functions (TCF)“, Annex N “Control standards for gas burners and gas burning appliances“. f) deletion of Annex L “Gas shut-off f

49、unction“ (content moved into EN 161); g) deletion of the former Annex O “Examples of new solutions“ (content moved into EN 161). 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Mac