BS EN 15502-2-1:2012 Incorporating corrigendum February 2015 BSI Standards Publication Gas-fired central heating boilers Part 2-1: Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 000 kW BS EN 15502-2-1:2012 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 15502-2-1:2012 Together with BS EN 15502-1:2012, it supersedes BS EN 483:1999+A4:2007 and BS EN 15420:2010 which will be withdrawn on 31 October 2015 Together with BS EN 15502-1:2012 and BS EN 15502-2-2:2014, it supersedes BS EN 297:1994 (including amendments), BS EN 677:1998, BS EN 15417:2006 and BS EN 625:1996, which will be withdrawn on 31 July 2017 National Annex NA reproduces Annex V from BS EN 15502-2-2:2014 This annex gives detailed information on the state of supersessions in the EN 15502 series The UK participation in its preparation was entrusted to Technical Committee GSE/29, Gas-fired central heating boilers (domestic and non‑domestic) and domestic gas-fired water heaters A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © The British Standards Institution 2015 Published by BSI Standards Limited 2015 ISBN 978 580 89561 ICS 27.060.30; 91.140.10 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 30 November 2012 Amendments/corrigenda issued since publication Date Text affected 28 February 2015 Supersession information in National foreword updated and National Annex NA inserted BS EN 15502-2-1:2012 EN 15502-2-1 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM October 2012 ICS 27.060.30; 91.140.10 English Version Gas-fired central heating boilers - Part 2-1: Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 000 kW Chaudières de chauffage utilisant les combustibles gazeux - Partie 2-1: Norme spécifique pour les appareils de type C et les appareils de types B2, B3 et B5 dont le débit calorifique nominal est inférieur ou égal 000 kW Heizkessel für gasförmige Brennstoffe - Teil 2-1: Heizkessel der Bauart C und Heizkessel der Bauarten B2, B3 und B5 mit einer Nennwärmebelastung nicht grưßer als 000 kW This European Standard was approved by CEN on 18 August 2012 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-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 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 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 EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref No EN 15502-2-1:2012: E BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) Contents Page Foreword .4 Introduction 6 1 Scope 8 2 Normative references 9 3 3.1 3.2 Terms, definitions and symbols 10 Terms and definitions 10 Symbols 12 4 Classification 12 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.101 Construction 12 General 12 Conversion to different gases 12 Materials 12 Method of construction .14 Burners 18 Pressure test points 18 Requirements for the application of control and safety devices .18 Additional requirements for modular boilers .20 6 Electrical safety .20 7 Controls 20 8 Operational requirements .20 8.1 General 20 8.2 Soundness .22 8.3 Hydraulic resistance .26 8.4 Heat inputs and heat output 26 8.5 Limiting temperatures 26 8.6 Ignition, cross lighting, flame stability 27 8.7 Reduction of the gas pressure .31 8.8 Defective closure of the gas valve immediately upstream of the main burner 31 8.9 Pre-purge 31 8.10 Functioning of a permanent ignition burner when the fan stops during the standby time34 8.11 Adjustment, control and safety devices .34 8.12 Carbon monoxide 38 8.13 NOx 40 8.14 Special provisions for boilers intended to be installed in a partially protected place 41 8.15 Formation of condensate .41 8.16 Temperature of combustion products 41 8.101 Mechanical resistance and stability of ducts, terminal and fitting pieces 42 8.102 Requirements for plastic in the combustion product evacuation ducts, terminals and fitting pieces for boilers 44 8.103 Requirements for elastomeric seals and elastomeric sealants in the combustion product evacuation ducts, terminals and fitting pieces 50 9 Useful efficiencies 54 10 Electric auxiliary energy .55 11 Risk assessment 55 12 12.1 12.2 Marking and instructions 55 Boiler marking .55 Instructions 55 BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) 12.3 12.4 Presentation 58 Supplementary marking and instructions in the case of boilers to be installed in partially protected places .58 101 Figures 58 102 Listing of tables and numbers .70 103 Annexes 71 Annex AA (informative) Standards replaced by this standard in combination with part 72 Annex BB (normative) Test apparatus for type C2 boilers .74 Annex CC (normative) Test methods to determine the effects of long-term thermal load, longterm condensate exposure, condensing/ non- condensing cycling and resistance to UV radiation 75 Annex DD (informative) Variations in gas quality 76 DD.1 Introduction 76 DD.2 Considerations if boilers are intend to be used with larger variations in the gas quality77 DD.2.1 Specification of the acceptable variations 77 DD.2.2 Impact of the claimed range around a set value for the normal distributed gases 78 DD.2.3 Impact of the declared values 79 DD.2.4 Relation between the RG, the DLG and the ELG 79 DD.2.5 Self adapting appliances 80 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or provisions of EU Directive 2009/142/EC, "Directive relating to appliances burning gaseous fuels (codified version)" (GAD) 81 Annex ZB (informative) Clauses of this European Standard addressing the methods for the verification of the efficiency of the EU Directive 92/42/EEC, relating to the efficiency of new hot boilers with an output of – 400 kW .84 Bibliography 85 BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) Foreword This document (EN 15502-2-1:2012) has been prepared by Technical Committee CEN/TC 109 “Central heating boilers using gaseous fuels”, the secretariat of which is held by NEN 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 April 2013, and conflicting national standards shall be withdrawn at the latest by October 2015 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 483:1999 and EN 15420:2010 This document has been prepared under mandates M89/6 and M/066, 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 Annexes ZA and ZB, which are integral parts of this document It supports essential requirements as meant in article of EU Directive 2009/142/EC, relating to appliances burning gaseous fuels and the verification methods valid for production and measurements, as meant in article 5.2 of EU Directive 92/42/EEC, relating to the efficiency requirements for new hot water boilers fired with liquid or gaseous fuels, with an output of - 400 kW Changes in this standard: Many minor changes are introduced due to the harmonisation between the various standards This includes the definitions that are used Some definitions are modified as some standards mentioned the same words with a different meaning The user is advised to compare the text he is used to (including the definitions) with the current version Most aspects were already introduced for some boiler types, but are now valid for a larger group of boilers a) b) Examples of modifications due to harmonisation: 1) Requirements for materials used for the flue function (8.101, 8.102, 8,103); 2) The soundness of the combustion circuit (8.2.2); New or generally reworded requirements: 1) Air proving (5.4.8, 5.4.9, 8.11.101); 2) Adjustment of gas air ration controllers (8.11.101); 3) Risk assessment (11); 4) Auxiliary energy use (10); BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) 5) Variation in gas quality (Annex CC); 6) The water trap requirements for condensing boilers (5.4.13); 7) Requirements for boiler cascades (8.101) EN 15502 is composed of the following parts: EN 15502-1, Gas-fired heating boilers — Part 1: General requirements and tests; EN 15502-2-1, Gas-fired central heating boilers — Part 2-1: Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 000 kW (the present document); prEN 15502-2-2, Gas-fired central heating boilers — Part 2-2: Specific standard for type B1 appliances of a nominal heat input not exceeding 70 kW According to the CEN/CENELEC 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, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) Introduction A gas-fired heating boiler is an appliance using gas as fuel designed to heat water with the purpose of providing heat to a building (or portion of a building) from one point to multiple rooms using heat emitters such as radiators and convectors to transmit the heat from the water to the room The boiler may also be used to provide domestic hot water via an indirect hot water storage tank The basic function of gas-fired heating boiler is to generate heat by direct heat transfer in a heat exchanger, from the combustion gasses to the water The boiler may include in one design more than one function It may include for example: a) a sanitary hot water function; b) a function to supply the combustion air from the outside of the building; c) a function to dispose the combustion products to the outside of the building The boiler design may be supplied to the market in more than one part If the boiler is supplied to the market in multiple parts, the boiler is the assembly of various parts according to the installation instructions Boilers may be designed to be connected to specific parts of a building Especially, connection to a chimney and the means of combustion air supply are relevant This European Standard was established to deal with aspects related to: d) safety; e) rational use of energy; f) fitness for purpose Matters related to quality assurance systems, tests during production, and certificates of conformity of auxiliary devices are not dealt with in this series of European Standards Relationship between this document and EN 15502-1, Gas-fired heating boilers Part 1: General requirements and tests: This European Standard is to be used in conjunction with EN 15502-1:2012 and follows the numbering structure of EN 15502-1:2012 This European Standard refers to clauses of EN 15502-1:2012 or adapts clauses by stating in the corresponding clause: shall be according to EN 15502-1:2012, (clause number) with the following modification shall be according to EN 15502-1:2012, (clause number) with the following addition EN 15502-1:2012, (clause number) is replaced by the following; EN 15502-1:2012, (clause number) is not applicable This European Standard adds clauses or subclauses to the structure of EN 15502-1:2012 which are particular to this standard It should be noted that these clauses and subclauses are not indicated as BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) an addition Clauses, subclauses and annexes which are additional to those EN 15502-1:2012 are numbered starting from 101, or designated as Annex AA, BB, CC, etc in Annex AA lists those existing standards which are replaced by this standard in combination with EN 15502-1 After the DOW (3 years after publication of both EN 15502-1 and EN 15502-2-1 in the OJEU) the standards specified in Annex AA, for the appliance types covered in EN 15502-2-1, are withdrawn Annex AA lists those existing appliance types for which CEN/TC109 standards are intended to be replaced by EN 15502-2-2 The standards listed in Annex AA are to be used until EN 15502-2-2 specifies that the standards are withdrawn for the appliance types indicated BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) Scope This European Standard specifies, the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers” Where the word boiler is used, it needs to be read as the boiler including its connecting ducts, ducts and terminals, if any This European Standard covers gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5, according to the classification in CEN/TR 1749:2009: a) that have a nominal heat input (on the basis of net calorific value) not exceeding 000 kW; b) that use one or more combustible gases of the three gas families at the pressures stated in EN 437; c) where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation; d) where the maximum operating pressure in the water circuit does not exceed bar; e) which may or may not give rise to condensation under certain circumstances; f) which are declared in the installation instructions to be either a “condensing” boiler or a "low temperature boiler" or a “standard boiler”; if no declaration is given the boiler is to be considered a “standard boiler”; g) which are intended to be installed either indoors or outdoors in a partially protected place; h) which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit; i) which are designed for either sealed water systems or for open water systems; j) which are either modular boilers, or non- modular boilers This European Standard provides requirements for boilers with known constructions For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Directive, is given in Clause 11 This European Standard does not cover all the requirements for: k) Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD); l) Appliances using flue dampers; m) Appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81; n) C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW; o) Appliances incorporating flexible plastic flue liners; p) Appliances designed to become connected to a combined flue duct system that is designed to operate under overpressure (for example Ca)); BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) Annex DD (informative) Variations in gas quality DD.1 Introduction The scope of this standard specifies: This standard does not cover appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance The purpose of this annex is explain the background of this limitation of the scope, and which aspects should be considered if appliances are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent This European Standard for boilers is the result of the introduction of the GAD in the EU In the preGAD period many counties had national certification procedures The national procedures had in common that: a) A reference gas is defined that can be used for tests to be performed at “the normal distribution conditions” b) The limit gases (of EN 437) are extreme gases intended specially for the judgment of the quality of the combustion and the smooth ignition of a boiler The relation between the (extreme) limit gases (ELG) and the actual nationally defined “normal variations of the distribution gases” has always been considered a matter for the member states to decide The approach that the reference gas is the realistic representation of the “normal distribution gases” has been assumed in the current standard and has its history in the national standards used in the pre-gad period Figure DD.1 schematically shows the relation between the reference gas (RG), the (extreme) limit gases (ELG) and the “normal distribution gases” (NDG) and the safety margin required to make sure that testing to this standard results in a safe use of the appliance in combination with the “normal distribution gases” This safety margin is necessary to ensure safe use of the appliance during its life cycle This safety margin accommodates: 1) Wear and tear, 2) The tolerance of the nominal load of the appliance (see 8.4.1), 3) The variation of the gas and combustion air temperature, humidity, and atmospheric pressure 4) The tolerances resulting from adjustment procedure for the appliance using the normally distributed gas However the boundary between the normal distribution gases and the safety margin is not clearly defined on a European level Some member states may have clear specifications for that, other may not 76 BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) In spite of possible different safety margins in different countries, it is clear that the (extreme) limit gases of the EN 437 (the ELG) are not to be construed as “the limits of the normally distributed gases” The standard is written with Fig DD.1 in mind Boilers have to specify on the data plate the gas the appliance is intended for It is common practice to specify the reference gas the appliance is set for For example G20 or G25 However it is understood that small variations around this reference gas are acceptable as NDG without making the appliance unsafe The relation between the (extreme)limit gases (ELG), the reference gas (RG)and the normal distribution gas (NDG) the appliance is designed for The current standard assumes that the normal distribution is close to the reference gas Figure DD.1 DD.2 Considerations if boilers are intend to be used with larger variations in the gas quality DD.2.1 Specification of the acceptable variations The acceptable variations should be specified How to specify the variation is not standardised yet One of the options would be to specify the range of normal variations in: • • the Wobbe Index; a parameter characterising flame stability, using the laminar burning velocity at a relevant gas/air ratio; 77 BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) • • • • • the fraction of higher hydrocarbons, for example expressed as an (equivalent) propane content; the H2 content; the CO2 content; the supply pressure of the appliance; etc For clarity there could be two types of range specified, which have different meanings: 1) the range around a set value; this is the range of gases that the boiler is capable of using as “normal distribution gas” without adjusting the boiler; 2) a range of settings: There may be more settings possible for a boiler; each setting will result in its own range around a set value, which could be used as “normal distribution gas” without further adjusting the boiler DD.2.2 Impact of the claimed range around a set value for the normal distributed gases In this standard it is assumed that the reference gas is a good representation of the gases the appliance may encounter during its lifetime However, if the manufacturer claims that the appliance is capable of using a larger range of normal distribution gases without adjusting the boiler, this is no longer a correct assumption In that case it has to be assured that the appliance can operate safely over the whole range of normal distribution gases that the appliance claims to be suitable for without adjusting the appliance One method of assuring this will be: a) To define normal distribution limit gases (DLG) that are good representation of the limits that the appliance may encounter during its lifetime (see Figure DD.2); b) Based on the DLG decide on the ELG’s (see also DD.2.4); c) For each test in this standard using the reference gas, it should be decided whether it is necessary to additionally perform the same test using one or more of the DLG gases; d) If more than one setting is possible (there is a range of settings) the process should be repeated for each setting 78 BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) The relation between the (extreme)limit gases (ELG), the reference gas (RG), the distribution limit gases (DLG),and the normal distribution gas(NDG) the appliance is designed for The DLG are to be considered if the normal distribution gas may vary to a large extent over the lifetime of the appliance Figure DD.2 DD.2.3 Impact of the declared values Some performance requirements and declarations (like efficiency, NOx levels and CO levels) depend on the gas quality At the time of publication of this standard it is not clear what performance value should be declared: • • The value if the boiler is supplied with the reference gas The value that will be obtained over the whole range of the gases the appliance is designed for The declaration of the manufacturer shall at least make clear what value is declared The practice current at the time of publication of this standard is to only declare the performance using the reference gas DD.2.4 Relation between the RG, the DLG and the ELG The presumption of this standard is that the normally distributed gas has a more or less constant quality In other words, it is assumed that the whole range of the normal distributed gases can be represented with only one DLG, the reference gas (RG) 79 BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) Some aspects are considered to be in the safety margin between the DLG and the ELG If the gas quality can vary to a larger extent it shall be ensured that the safety margin between the DLG and the ELG is sufficient Aspects at least to be considered: a) The nominal load of the appliance According to 8.4.1 the nominal load of the boiler may vary within production tolerances between - % and + % In this standard, it is assumed that the impact of this variation is included in the safety margin If the variation of the gas quality increases, it should be verified that the safety margin is still adequate b) The variation of the gas and combustion air temperature humidity and atmospheric pressure All tests are performed under laboratory conditions In this standard it is assumed that the variation which will occur in the field where the boiler is used- is included in the safety margin If the variation of the normally distributed gas quality increases, it should be verified that the safety margin is still adequate c) Wear and Tear In this standard it is assumed that normal wear and tear is included in the safety margin If the variation of the normally distributed gas quality increases, it should be verified that the safety margin is still adequate Special attention should be given to fouling of the burner and the heat exchanger that may occur in the period between normal maintenance intervals d) If there is an adjustment procedure for the appliance using the normal distributed gas, the impact of gas quality variations on this procedure should be investigated For example, if the appliance is set on a “low Wobbe index day” what will be the result on a “High Wobbe index day”? Relevant is whether the gas company makes the actual value of the Wobbe index available to the user/installer for adjustment purposes or not NOTE The impression is that a safety margins in the Wobbe index of about (5 to 9) % between ELGs and the DLGs could cover the aspects However, this will depend on climate conditions and the design of the appliance There are no public research reports available to verify this impression DD.2.5 Self adapting appliances An appliance may have an active mechanism adapting to the gas quality From a technical point of view there is always a maximum speed of variation this mechanism can follow This maximum speed should be specified 80 BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) Annex ZA (informative) Clauses of this European Standard addressing essential requirements or provisions of EU Directive 2009/142/EC, "Directive relating to appliances burning gaseous fuels (codified version)" (GAD) This Annex ZA replaces the Annex ZA of Part This European Standard has been prepared under mandate M89/6 given to CEN by the European Commission and the European Free Trade Association and supports essential requirements of the EU Directive 2009/142/EC, relating to appliances burning gaseous fuels (GAD) 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 normative 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 relevant Essential Requirements of that Directive and associated EFTA regulations Table ZA.1 — Identification form on the compliance of EN 15502-2-1 with the essential requirements of the 2009/142/EC “Directive relating to appliances burning gaseous fuels” (codified version) (continued) Essential requirement Object Clauses/subclauses in the standard ANNEX OF THE DIRECTIVE GENERAL CONDITIONS 1.1 1.2 Safe design and construction Marking and instructions Installation instructions User's instructions Warnings on the appliance Warnings on the packaging Official languages 1, a 7.2 , 12 12.2 12.2 12.1 12.1 12.3 1.2.1 Information in the installation instructions Gas type Supply pressure Combustion air rate Discharge of combustion products 12.2, 5.5, 5.6 a 12.1.2 a 12.1.2 12.2 12.2 1.2.2 1.2.3 1.3 2.1 Contents of the user's instructions Warnings on the appliance and on the packaging Fittings Materials Characteristics 12.2.2 a 12.1.4 Not applicable 2.2 Guarantee Foreword, 1, Annexes 5.3, 8.16, 8.101, 8.102, 8.103 81 BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) Table ZA.1 (continued) Clauses/subclauses in the standard Essential requirement 3.1 3.1.1 Design and construction General Resistance to constraints 3.1.2 Condensation 5.4.1, 5.4.6.103, 8.15 , 8.102, 8.103 3.1.3 3.1.4 3.1.5 3.1.6 3.1.7 3.1.8 3.1.9 Risk of explosion Water penetration Normal fluctuation of auxiliary energy Abnormal fluctuation of auxiliary energy Hazards of electrical origin Pressurised parts Failure of the safety devices — flame supervision device — automatic burner control system — overheat protection — gas circuit — air proving — automatic shut-off valves — regulators Safety, adjustment Protection of parts set by the manufacturer Marking of taps Unburnt gas release Risk of leakage 5.3, 5.4 5.4.4, 8.2.3 10 10 5.3.2, 8.3 a 7.1 5.7.6 a 5.7.6, 7.2 , 7,3, 8.11.6 a a 5.7.8, 7.2 , 7.3 , 8.16 5.7.3, 8.8 5.4.8, 8.11.5, 8.11.101 5.7.1, 5.7.3 5.7.4, 8.11.7 5.7.1, 5.101 5.7.2, 5.4.9 5.7.1 3.1.10 3.1.11 3.1.12 3.2 3.2.1 3.2.2 Object Risk of gas accumulation in the appliance — Ignition — Re-ignition — Flame extinction 3.2.3 Risk of gas accumulation in rooms 3.3 Ignition 5.4 5.3, 5.4, 8.14 5.4.4, 5.4.5, 8.2.1 5.7.5, 8.6, 8.9 8.11 8.11, 8.6.3 5.7.3 — Ignition and re-ignition 8.6, 8.9 — Cross-lighting 8.6 Combustion 3.4.1 Flame stability 8.6, 8.10, 8.11, 8.1, 8.7 Unacceptable concentrations harmful to health 8.1, 8.6, 8.11.101, 8.12 No accidental release of combustion products 8.2.2, 8.6, 8.16, 8.101, 8.102, 3.4.2 8.103 3.4.3 82 Release of combustion products into the room or 8.2.2 appliances connected to a flue under abnormal draught conditions BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) Table ZA.1 (continued) Essential requirement Clauses/subclauses in the standard Object 3.5 Rational use of energy 3.6 Temperature 8.5 3.6.1 Floor and adjacent walls 8.5 3.6.2 Knobs 8.5.2 3.6.3 Temperatures of external surfaces 8.5 a These subclauses are by reference included in this standard The clauses are to be found in EN 15502-1, WARNING — Other requirements and other EU Directives may be applicable to the products falling within the scope of this European Standard For clarity some examples of the EU Directives that may be applicable to the products falling within the scope of this European Standard The LVD One may find relevant requirements in other European Standards The EMC directive One may find relevant requirements in other European Standards The PED directive (depending on for example the maximum allowable temperature, or the product of the volume times maximum allowable pressure ) The CPD directive TC 109 is not aware of any European Standard covering the CPD for gas fired central heating boilers The ERP directive There are no European Standards available at this moment for this Directive For information: As soon as there is a mandate from the Commission to draft standards to this Directive it is the intention to include the requirements for this Directive into the generic standard (EN 15502-1) covering all appliances It is the intention to have no additional requirements in the part 2’s for the ERP This list is not exhaustive and it is up to the user of this standard to verify if other directives and/or related standards are applicable for the product 83 BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) Annex ZB (informative) Clauses of this European Standard addressing the methods for the verification of the efficiency of the EU Directive 92/42/EEC, relating to the efficiency of new hot boilers with an output of – 400 kW This Annex ZB replaces the Annex ZB of Part This European Standard has been prepared under mandate M066 given to CEN by the European Commission and the European Free Trade Association and provides for methods for the measurement of the efficiency according to the EU Directive 92/42/EEC, relating to the efficiency of new hot water boilers with an output of – 400 kW (BED) 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, Clause of this European Standard specifies the relevant methods for verification of the efficiency, as meant in article 5.2 of this Directive WARNING — Other requirements and other EU Directives may be applicable to the products falling within the scope of this European Standard (For examples see Annex ZA.) 84 BS EN 15502-2-1:2012 EN 15502-2-1:2012 (E) Bibliography [1] EN 1859:2000, Chimneys ― Metal chimneys ― Test methods [2] EN ISO 8256, Plastics ― Determination of tensile-impact strength (ISO 8256) 85 BSEN EN15502-2-2:2014 15502-2-1:2012 BS EN 15502-2-1:2012 EN 15502-2-2:2014 (E) (E) Annex V NA National Annex (informative) Standards replaced by this standard in combination with EN 15502-1 EN 15502-1:2012, Annex V is replaced by the following: The following documents are envisaged and to be used in combination with EN 15502-1:2012: — EN 15502-2-1:2012, Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 000 kW; — EN 15502-2-2, Specific standard for type B1 appliances The table below shows the standards that are replaced by EN 15502-2-2 and EN 15502-2-1:2012 in combination with EN 15502-1:2012 by the DOW The standards that are to be withdrawn and the DOW with the publication of this standard are mentioned in the foreword 40 86 BS EN 15502-2-2:2014 15502-2-1:2012 BS EN EN 15502-2-2:2014 15502-2-1:2012 (E) EN (E) Standard reference Title Types covered in EN 15502–21:2012 Types covered in EN 15502–2-2 EN 297:1994 Gas-fired central heating boilers — Type B11 B2,B3 and B5 and B11BS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW B1 EN 656:1999 Gas-fired central heating boilers — Type B B2,B3 and B5 boilers of nominal heat input exceeding 70 kW but not exceeding 300 kW None EN 13836:2006 Gas fired central heating boilers — Type B boilers of nominal heat input exceeding 300 kW, but not exceeding 000 kW None EN 483:1999 Gas-fired central heating boilers — Type C All boilers of nominal heat input not exceeding 70 kW None EN 15420:2010 Gas-fired central heating boilers — Type C All boilers of nominal heat input exceeding 70 kW, but not exceeding 000 kW None EN 677:1998 Gas-fired central heating boilers — Specific All C types, B2, None requirements for condensing boilers with a B3 and B5 nominal heat input not exceeding 70 kW EN 15417:2006 Gas-fired central heating boilers — Specific All C types, B2, None requirements for condensing boilers with a B3 and, B5 nominal heat input greater than 70 kW but not exceeding 1000 kW EN 625:1995 Gas-fired central heating boilers — Specific All C types, B2, B1 requirements for the domestic hot water B3 and B5 operation of combination boilers of nominal heat input not exceeding 70 kW B2,B3 and B5 For EN 656:1999 and EN 13836:2006, CEN/TC 109 will decide in a later stage how to revise these standards for B1 appliances The options are: 1) withdraw the standards as they are no longer used; 2) withdraw the standards and include the requirements in an amendment of this standard; 3) revise the standards as a stand-alone standard for B1 appliances only The last option is at this moment not considered to be a realistic option 41 87 This page deliberately left blank This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS 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