BS EN 1854:2010 BSI Standards Publication Pressure sensing devices for gas burners and gas burning appliances NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW raising standards worldwide™ `,,```,,,,````-`-`,,`,,`,`,,` - Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 1854:2010 The UK participation in its preparation was entrusted to Technical Committee GSE/22, Safety and control devices for gas and oil burners and gas burning appliances A list of organizations represented on this committee can be obtained on request to its secretary EN 1854:2010 is a candidate “harmonized” European Standard and fully takes into account the requirements of the European Commission mandate M/BC/CEN/89/6, Appliances burning gaseous fuels, given under the New Approach Directive (2009/142/EC), and is intended to lead to CE marking The date of applicability of EN 1854:2010 as a “harmonized” European Standard, i.e the date after which this standard may be used for CE marking purposes, is subject to an announcement in the Official Journal of the European Communities EN 1854:2010 is the subject of transitional arrangements agreed under the European Commission mandate The Member States have agreed a nominal transition period for the co-existence of EN 1854:2010 and their corresponding national standard(s) It is intended that this period will comprise a nominal nine month period during which any required changes to national regulations are to be made, followed by a further nominal twelve month period for the implementation of CE marking At the end of this co-existence period, the national standard(s) will be withdrawn In the UK, the corresponding national standard is: — BS EN 1854:2006, Pressure sensing devices for gas burners and gas burning appliances; and based on this nominal transition period of twenty–one months, BS EN 1854:2006 will be withdrawn on 31 May, 2012 NOTE: This date is approximate Users of this standard should contact BSI Customer Services for confirmation of withdrawal This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © BSI 2010 ISBN 978 580 62779 ICS 23.060.40 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2010 Amendments issued since publication Date Text affected `,,```,,,,````-`-`,,`,,`,`,,` - Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM May 2010 ICS 23.060.40 Supersedes EN 1854:2006 English Version Pressure sensing devices for gas burners and gas burning appliances Dispositifs de surveillance de pression pour brûleurs gaz et appareils gaz Druckwächter für Gasbrenner und Gasgeräte This European Standard was approved by CEN on 15 April 2010 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 such national standards may be obtained on application to the CEN 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 own language and notified to the CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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 `,,```,,,,````-`-`,,`,,`,`,,` - Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale Ref No EN 1854:2010: E BS EN 1854:2010 EN 1854:2010 (E) Contents Page Foreword 1 Scope 5 2 Normative references 3 Terms and definitions 5 4 Classification 10 5 Units of measurement and test conditions 11 6 Construction requirements 11 7 Performance 17 8 EMC/Electrical requirements 28 9 Marking, installation and operating instructions 30 Annex A (informative) Gas connections in common use in the various countries 33 Annex B (informative) Leak-tightness test – volumetric method 34 Annex C (informative) Leak-tightness test – pressure loss method 35 Annex D (informative) Conversion of pressure loss into leakage rate 36 Annex E (normative) Electrical/electronic component fault modes 37 Annex F (normative) Additional requirements for safety accessories and pressure accessories as defined in EU Directive 97/23/EC 38 Annex G (normative) Materials for pressurized parts 39 Annex H (informative) Additional materials for pressurized parts 40 Annex I (normative) Requirements for controls used in DC supplied gas burners and gas burning appliances 41 Annex AA (informative) Manufacturers declaration for EPSDs 42 Annex ZA (informative) Clauses of this European Standard addressing requirements or provisions of EU-Directives 43 Bibliography 45 Figures Figure — Differential PSD Figure — Atmospheric PSD Figure — Absolute PSD Figure — EPSD Figure — Step response of EPSD 8 Figure — Clarification of definitions for PSD-M and PSD-S 9 `,,```,,,,````-`-`,,`,,`,`,,` - Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Figure — Clarification of definitions for EPSD 10 Tables Table — Maximum external leakage rates for air/combustion products 18 Table — Number of cycles PSD-M and PSD-S 27 Table E.1 — Electrical/electronic component faults modes 37 Table AA.1 — Sensor measurement: Pressure 42 Table ZA.1 — Correspondence between this European Standard and Directive (Directive 2009/142/EC relating to appliances burning gaseous fuels) 43 `,,```,,,,````-`-`,,`,,`,`,,` - Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Foreword This document (EN 1854:2010) 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 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 November 2010, and conflicting national standards shall be withdrawn at the latest by May 2012 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 1854:2006 This document has been prepared under a mandate given to CEN by the European Commission and 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 European Standard refers to clauses of EN 13611:2007 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 European Standard adds clauses or subclauses to the structure of EN 13611:2007 which are particular to this European 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 revised European Standard: a) the scope introduces a new declaration concerning the maximum inlet pressure covered by the revised standard; b) incorporation of the requirements and tests for electronic pressure sensing devices (EPSDs); c) alignment with EN 13611:2007; d) updating of definitions and normative references 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, 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 Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Scope This European Standard specifies the safety, construction and performance requirements for pressure sensing devices This European Standard covers type testing only It applies to pressure sensing devices for the measurement of pressures of combustible gases of the first, second and third families, air, combustion products for maximum inlet pressures up to 500 kPa (5 bar) It applies to all types of pressure sensing devices, including electronic, differential and inferential types It specifies requirements for pressure sensing devices which are intended to be applied to steam boilers and as such need to meet increased reliability requirements These devices are classified as PSD-S in this European Standard Normative references The following referenced documents are indispensable for the application of this document For dated references, 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 EN 60529:1991, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989) EN 60730-2-6:2008, Automatic electrical controls for household and similar use — Part 2-6: Particular requirements for automatic electrical pressure sensing controls including mechanical requirements (IEC 60730-2-6:2007, modified) EN 61058-1:2002, Switches for appliances — Part 1: General requirements (IEC 61058-1:2000 + A1:2001, modified) `,,```,,,,````-`-`,,`,,`,`,,` - EN 175301-803, Detail Specification: Rectangular connectors — Flat contacts, 0,8 mm thickness, locking screw not detachable EN ISO 75 (all parts), Plastics — Determination of temperature of deflection under load IEC 60730-1:2007, Automatic electrical controls for household and similar use — Part 1: General requirements Terms and definitions For the purposes of this document, the terms and definitions given in EN 13611:2007 and the following apply 3.101 pressure sensing device PSD device which senses pressure and provides a signal NOTE Different types of PSDs are given in Figures to Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Key sensing element inlet inlet 2/reference Figure — Differential PSD Key sensing element inlet reference Key sensing element inlet Figure — Atmospheric PSD Figure — Absolute PSD 3.102 set point pressure to which the PSD is adjusted to operate 3.103 switching pressure inlet pressure at which the PSD operates 3.104 set point range declared range of adjustment of the PSD between the highest and lowest set points 3.105 upper switching pressure pressure at which the PSD operates during an increase in pressure 3.106 lower switching pressure pressure at which the PSD operates during a decrease in pressure 3.107 electronic pressure sensing device EPSD assembly of electronic based pressure sensing element and signal conditioner Figure 4, clarifies the EPSD `,,```,,,,````-`-`,,`,,`,`,,` - NOTE Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Key EPSD Central Unit Electronic pressure sensing element Signal Conditioner Interface Switching Figure — EPSD 3.108 electronic pressure sensing element part of the EPSD, which transforms the signal to be sensed (e.g pressure) to another physical value (e.g force, voltage) 3.109 signal conditioner transforms the signal from the sensing element into the output signal of the EPSD NOTE The signal conditioner may consist of functional electronics as well as electronics which cause the sensor output to be classified as class B or C in accordance with EN 13611:2007 3.110 response time time counted from start of the step change input signal (e.g pressure) until the output signal (e.g voltage, current) is within the settling tolerance for the first time NOTE For further information refer to Figure `,,```,,,,````-`-`,,`,,`,`,,` - Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Key step function (y1) step response (y2) overshoot value settling tolerance t steady state value response time settling time time Figure — Step response of EPSD 3.111 step response output signal change of a device having a step change input signal `,,```,,,,````-`-`,,`,,`,`,,` - 3.112 steady state value value of the output signal after step response input remains constant 3.113 settling tolerance difference between the current output signal and its steady state value declared by the manufacturer 3.114 settling time time counted from start of the step change input signal until the output signal remains within the settling tolerance 3.115 overshoot value biggest deviation between the output signal and its steady state value after step change of the inlet signal exceeding the settling tolerance for the first time 3.116 withstand pressure pressure that is withstood without degraded characteristic after returning below the maximum inlet pressure NOTE The withstand pressure can be equal to maximum inlet pressure 3.117 deviation difference between the declared or indicated set point and the pressure measured before the endurance test Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Annex B (informative) Leak-tightness test – volumetric method Shall be according to EN 13611:2007, Annex B `,,```,,,,````-`-`,,`,,`,`,,` - 34 Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Annex C (informative) Leak-tightness test – pressure loss method `,,```,,,,````-`-`,,`,,`,`,,` - Shall be according to EN 13611:2007, Annex C 35 Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Annex D (informative) Conversion of pressure loss into leakage rate Shall be according to EN 13611:2007, Annex D `,,```,,,,````-`-`,,`,,`,`,,` - 36 Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Annex E (normative) Electrical/electronic component fault modes Shall be according to EN 13611:2007, Annex E with the following modification: The below modifications to EN 13611:2007, Table E.1 are applicable Table E.1 — Electrical/electronic component faults modes Component type Hybrid circuit Short d, o Ceramic lever Pressure sensors Open q Remarks d p x x a x q Fault modes resulting from the safety analysis in 6.5.1 are applicable a Only opening of one pin at a time d Failure modes for individual components of the hybrid circuit are applicable as described for the individual components in this table o A short circuit of a trim cut performed on a thick film resistor may be excluded if the coating over the trim cut is in accordance with IEC 60730-1:2007, Clause 20 or if the thick film resistor is passivated with glass prior to the trim cut p A ceramic lever is considered having no hysteresis and no plastic deformation as a function of bending If the mechanical stress exceeds the limit then the lever is breaking, resulting in open circuit q Failure modes of sensing elements and their assemblies as indicated below have to be examined for being applicable for fault assessment of the function: a sensing element does not respond to the actual pressure value as was to be expected (e.g "stuck at"); the pressure related sensing element characteristic changes in principle or by an offset; specific failure modes related to the sensing element technology `,,```,,,,````-`-`,,`,,`,`,,` - Any failure mode shall not result in the simulation of a pressure that can cause a potential hazardous situation 37 Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Annex F (normative) Additional requirements for safety accessories and pressure accessories as defined in EU Directive 97/23/EC EN 13611:2007, Annex F is not applicable `,,```,,,,````-`-`,,`,,`,`,,` - 38 Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Annex G (normative) Materials for pressurized parts 39 Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - EN 13611:2007, Annex G is not applicable BS EN 1854:2010 EN 1854:2010 (E) Annex H (informative) Additional materials for pressurized parts EN 13611:2007, Annex H is not applicable 40 Provided by IHS No reproduction or networking permitted without license from IHS `,,```,,,,````-`-`,,`,,`,`,,` - Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Annex I (normative) Requirements for controls used in DC supplied gas burners and gas burning appliances Shall be according to EN 13611:2007, Annex I with the following modifications: Annex I is applicable for the relevant requirements specified in 7.1, 7.101.2.10, 7.101.3.2 and Clause 41 `,,```,,,,````-`-`,,`,,`,`,,` - Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Annex AA (informative) Manufacturers declaration for EPSDs Table AA.1 — Sensor measurement: Pressure Sensor influences, reversible Normal a operation Sensor influences, nonreversible Accuracy repeatability hysteresis drift transfer ratio linearity offset resolution Response time Sensor type, sensor technology and sensor range shall be specified Clarifications to the above terms are given in Figure a 42 Operation within the specifications `,,```,,,,````-`-`,,`,,`,`,,` - Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale end of life failure mode temperature lifecycles lifetime auxiliary power supply temperature barometric pressure humidity Lower and upper limits BS EN 1854:2010 EN 1854:2010 (E) Annex ZA (informative) Clauses of this European Standard addressing requirements or provisions of EU-Directives This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to provide a means of conforming to Essential Requirements of the New Approach Directive 2009/142/EC relating to appliances burning gaseous fuels Once this standard is cited in the Official Journal of the European Union under that Directive and has been implemented as a national standard in at least one Member State, compliance with the clauses of this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding Essential Requirements of that Directive and associated EFTA regulations Table ZA.1 — Correspondence between this European Standard and Directive (Directive 2009/142/EC relating to appliances burning gaseous fuels) n/a = Not applicable Essential Requirements (ERs) of Directive 2009/142/EC "Appliances burning gaseous fuels" Clause(s)/subclause(s) of this EN GENERAL CONDITIONS n/a 1.1 Design and construction 6, EMC compatibility (GADAC Guidance B2) 1.2 Instructions and warning notices n/a 1.2.1 Instructions installer 9.2 1.2.2 Instructions user n/a 1.2.3 Warning notices 9.3 1.3 Correct operation MATERIAL n/a 2.1 Appropriate for their purpose 6.1, 6.3 2.2 Guarantee properties of the materials Not relevant for EN DESIGN AND CONSTRUCTION n/a 3.1 General n/a 3.1.1 Safety of construction 3.1.2 Condensation n/a 3.1.3 Risk of explosion at event of external fire 6.1, 6.3 3.1.4 Water/air penetration in gas circuit n/a 3.1.5 Normal fluctuation of auxiliary energy 8.4 3.1.6 Abnormal fluctuation of failure of auxiliary energy 8.2 3.1.7 Hazards of electrical origin `,,```,,,,````-`-`,,`,,`,`,,` - Provided by IHS No reproduction or networking permitted without license from IHS 43 Not for Resale BS EN 1854:2010 EN 1854:2010 (E) Table ZA.1 (continued) n/a = Not applicable Clause(s)/subclause(s) of this EN 3.1.8 Pressurized parts n/a 3.1.9 Failure of devices 6.1, 6.6 3.1.10 Overruling safety devices n/a 3.1.11 Adjustment protection 6.2.8 3.1.12 Prevention error in handling n/a 3.2 Unburned gas release n/a 3.2.1 Risk of gas leakage 7.2 3.2.2/ 3.2.3 Risk of gas accumulation n/a 3.3 Ignition n/a 3.4 Combustion n/a 3.5 Rational use of energy n/a 3.6 Temperatures n/a 3.7 Foodstuffs and water used for sanitary purposes n/a Annex III Data plate 9.1 WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard 44 Provided by IHS No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - Essential Requirements (ERs) of Directive 2009/142/EC "Appliances burning gaseous fuels" BS EN 1854:2010 EN 1854:2010 (E) Bibliography Shall be according to EN 13611:2007, Bibliography `,,```,,,,````-`-`,,`,,`,`,,` - 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