BS EN 13203-2:2015 BSI Standards Publication Gas-fired domestic appliances producing hot water Part 2: Assessment of energy consumption BS EN 13203-2:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 13203-2:2015 It supersedes BS EN 13203-2:2006 which is withdrawn The UK participation in its preparation was entrusted to Technical Committee GSE/29, Gas-fired central heating boilers (domestic and non-domestic) and domestic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 87501 ICS 91.140.65 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 May 2015 Amendments issued since publication Date Text affected BS EN 13203-2:2015 EN 13203-2 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM May 2015 ICS 91.140.65 Supersedes EN 13203-2:2006 English Version Gas-fired domestic appliances producing hot water - Part 2: Assessment of energy consumption Appareils domestiques produisant de l'eau chaude sanitaire utilisant les combustibles gazeux - Partie 2: Evaluation de la consommation énergétique Gasbeheizte Geräte für die sanitäre Warmwasserbereitung für den Hausgebrauch - Teil 2: Bewertung des Energieverbrauchs This European Standard was approved by CEN on April 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 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 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 13203-2:2015 E BS EN 13203-2:2015 EN 13203-2:2015 (E) Contents Page Foreword Introduction Scope Normative references Terms and definitions 4.1 4.2 4.3 4.3.1 4.3.2 4.3.3 4.3.4 4.3.5 4.3.6 General test conditions Reference conditions Measurement uncertainties Test conditions General Test room Water supply Steady state Initial adjustment of the appliance .9 Electrical supply 10 5.1 5.2 5.3 5.4 5.4.1 5.4.2 5.4.3 5.5 5.6 5.6.1 5.6.2 5.6.3 5.7 Determination of the energy consumption of the appliance 10 General 10 Tapping cycles 10 Measurement of the energy recovered by the useful water 17 Calculation of gas energy 18 Calculation of daily gas energy consumption in summer mode 18 Calculation of daily gas energy consumption in winter mode 18 Daily gas energy consumption seasonally weighted 19 Calculation of daily electrical energy 19 Measurement of energy consumption in standby mode 20 General 20 Calculation of daily gas energy consumption in standby mode 20 Calculation of daily auxiliary energy in standby mode 20 Measurement of daily auxiliary energy consumption in off mode 21 Determination of the wasted water 21 7.1 7.2 7.3 Eco design Related Products Data 22 Water heating energy efficiency 22 Annual fuel consumption (AFC) 23 Annual electricity consumption (AEC) 23 Annex A (informative) Test conditions 25 Annex B (informative) Test rig and measurement devices 29 B.1 General 29 B.2 Pressure measurement 30 B.3 Temperature measurement 30 Annex ZA (informative) Relationship between this European Standard and the requirements of Commission Regulation (EC) n° 814/2013 34 Annex ZB (informative) Relationship between this European Standard and the requirements of Commission Regulation n° 812/2013 35 BS EN 13203-2:2015 EN 13203-2:2015 (E) Annex ZC (informative) Relationship between this European Standard and the requirements of Commission Regulation (EU) n° 813/2013 36 Annex ZD (informative) Relationship between this European Standard and the requirements of Commission Delegated Regulation (EU) n° 811/2013 37 Bibliography 38 BS EN 13203-2:2015 EN 13203-2:2015 (E) Foreword This document (EN 13203-2:2015) 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 November 2015, and conflicting national standards shall be withdrawn at the latest by November 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 13203-2:2006 The main purpose of this revision is to provide a means of conforming to requirements of Commission Delegated Regulation (EC) n° 813/2013, (EC) n° 811/2013, (EC) n° 812/2013 and (EC) n° 814/2013 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 Regulation(s) For relationship with EU Regulation(s), see informative Annexes ZA, ZB, ZC or ZD, which are integral parts of this document 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 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 13203-2:2015 EN 13203-2:2015 (E) Introduction The safety operation of the boiler or water heater is not covered by this standard Safety should be proved by means of the essential safety requirements of the Gas Appliances Directive 2009/142/EC This may be achieved by compliance with the appropriate existing harmonized standards NOTE Useful standards are EN 26, EN 89, EN 15502-1, EN 15502-2-1 and EN 15502-2-2 BS EN 13203-2:2015 EN 13203-2:2015 (E) Scope This European Standard is applicable to gas-fired appliances producing domestic hot water It applies to both instantaneous and storage tank appliances; waters-heaters and combination boilers that have: — a heat input not exceeding 70 kW; and — a hot water storage tank capacity (if any) not exceeding 500 l In the case of combination boilers, with or without storage tank, domestic hot water production is integrated or coupled, the whole being marketed as a single unit EN 13203-1 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a selected variety of uses It also gives a system for presenting the information to the user The present document sets out a method for assessing the energy performance of the appliances It defines a number of daily tapping cycles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of different gas-fired appliances to be compared and matched to the needs of the user Where other technologies are combined with a gas-fired boiler or a water heater to produce domestic hot water, specific parts of EN 13203 apply Normative references The following documents, in whole or in part, are normatively 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 Not applicable Terms and definitions For the purposes of this document, the following terms and definitions apply 3.1 storage tank reservoir for domestic hot water 3.2 nominal domestic hot water heat input (Qnw) value of the heat input for the production of domestic hot water stated in the instructions — Symbol: Qnw — Unit: kilowatt (kW) 3.3 summer mode conditions during which the appliance supplies energy only for the production of domestic hot water 3.4 winter mode conditions during which the combination boiler supplies energy for the production of domestic hot water and space heating 3.5 domestic water test temperature temperature of the delivered water at which the tests are conducted BS EN 13203-2:2015 EN 13203-2:2015 (E) 3.6 control cycle the time cycle for keeping components and/or the storage tank (if any) of the domestic hot water circuit at predetermined temperature level, consists of an «ON» duration time during which the heating of the domestic hot water (by gas energy and/or auxiliary energy) is operating, and an «OFF» duration time during which no heating occurs 3.7 useful water quantity of water delivered at the tap for which the temperature increase is in accordance with the requirement fixed for each individual delivery of the tapping cycles 3.8 wasted water quantity of water delivered at the tap for which the temperature increase is not in accordance with the requirement fixed for each individual delivery of the tapping cycles 3.9 stand by mode operating state in which the appliance can provide domestic hot water at any time Note to entry: In the case of an appliance with a control cycle for keeping components and/or the storage tank (if any) of the domestic hot water circuit at predetermined temperature level no tapping is made 3.10 off mode state of an appliance, selected by the user, in which domestic hot water cannot be provided 3.11 useful water flow rate flow rate of water delivered at the tap for which the temperature increase is in accordance with the requirement fixed for each individual delivery of the tapping cycles 3.12 useful water temperature water temperature, expressed in degrees Celsius, delivered at the tap 3.13 appliance flow rate flow rate delivered by the appliance before the mixing device, if applicable 3.14 appliance water temperature (Td) water temperature, expressed in degrees Celsius, delivered by the appliance before the mixing device 3.15 water temperature rise (∆Tm) in K difference between the useful water temperature and the cold water temperature, at which hot water is contributing to the reference energy as specified in the tapping cycles 3.16 water temperature rise for basin tapping types (∆Tp) in K difference between the useful water temperature and the cold water temperature, calculated as a mean value over the water BS EN 13203-2:2015 EN 13203-2:2015 (E) 4.1 General test conditions Reference conditions Unless otherwise stated, the general test conditions shall be as follows: — cold water temperature: 10 °C; — maximum average variation over the test period: ± K; — cold water pressure: (2 ± 0,1) bar; — ambient air temperature: 20 °C; — maximum average variation over the test period ± K; — maximum variation during the tests ± K; — 4.2 electrical supply voltage: (230 ± 2) V (single phase) Measurement uncertainties Except where otherwise stated in the clauses describing the tests, the uncertainties of measurements carried out shall be not greater than the maximum uncertainties indicated below The standard deviations shall be evaluated taking account of the various sources of uncertainty: contribution from the instrument, repeatability, calibration, ambient conditions, etc — water rate: ± %; — gas rate: ± %; — time: ± 0,2 s; — temperatures: — ambient: ± K; — water: ± 0,5 K; — gas: ± 0,5 K; — mass: ± 0,5 %; — gas pressure: ± %; — gas calorific value: ± %; — gas density: ± 0,5 %; — electrical energy: ± % The stated measurement uncertainties relate to individual measurements For measurements that combine a number of individual measurements, smaller uncertainties on the individual measurements may be necessary to ensure a total uncertainty within ± % under the steady state conditions These uncertainties correspond to two standard deviations (2σ) BS EN 13203-2:2015 EN 13203-2:2015 (E) Key A temperature (°C) B time (min) C hot water D cold water Figure A.2 — Initial adjustment of the appliance without storage tank maintained in temperature 26 BS EN 13203-2:2015 EN 13203-2:2015 (E) Key A delivered elementary energy (kWh) B time (h.min) C gas rate D beginning of the measurement programme E end of the measurement programme Figure A.3 — Tapping cycle – Test cycle for measurement of the energy consumption of the appliance with storage tank maintained in temperature 27 BS EN 13203-2:2015 EN 13203-2:2015 (E) Key A delivered elementary energy (kWh) B time (h.min) C gas rate D beginning of the measurement programme E end of the measurement programme Figure A.4 — Tapping cycle – Test cycle for measurement of the energy consumption of the appliance without storage tank maintained in temperature Figure A.5 — Standby mode with control cycles 28 BS EN 13203-2:2015 EN 13203-2:2015 (E) Annex B (informative) Test rig and measurement devices B.1 General A general diagram of a possible test rig is shown in Figure B.1 Key water preparator of water at 10 °C diaphragm to homogenise the temperature and pressure profile across the tube diameter temperature measurement device equilibrium valve electrovalve flowmeter control valve rate control 10 drain 11 appliance in test 12 pressure measurement device 13 pressure control 14 cold water connection part consist of stainless steel 15 circulator of cold water circuit Figure B.1 — Example of test rig 29 BS EN 13203-2:2015 EN 13203-2:2015 (E) B.2 Pressure measurement An example of the pressure measurement device is shown in Figure B.2 The lengths of the pipe upstream and downstream of the pressure measurement device are 15D and 5D, where (D) is the diameter of the pipe Figure B.2 — Example of pressure measurement device B.3 Temperature measurement Temperature sensors used in the test rig could be: — Thermocouples of type T, class 1, diameter of 0,5 mm; — Low inertia Pt 100 probe, diameter of mm The temperature measurement device could be equipped with: — thermocouples + Pt 100 probe, diameter mm; or — thermocouples + Pt 100 probe, diameter mm An example of a temperature measurement device is shown in Figure B.3 30 BS EN 13203-2:2015 EN 13203-2:2015 (E) Key outlet of the appliance in test (hole with ØD) diaphragm to homogenise the temperature and pressure profile across the tube diameter thermocouple platine probe ØD 0,7 x ØD < 10 x ØD x ØD > 0,5 D and < D Figure B.3 — Example of temperature measurement device The position of the thermocouples (three or four with one thermocouple at the centre of the flow) could be as shown in Figure B.4 31 BS EN 13203-2:2015 EN 13203-2:2015 (E) Key • thermocouples Figure B.4 — Example of position of thermocouples - Method of surfaces Other measuring instruments may be used provided the results required in the standard are obtainable 32 BS EN 13203-2:2015 EN 13203-2:2015 (E) key gas appliance DTd Dmin Td DTuseful Duseful Figure B.5 — Useful and delivered flow rates and temperatures 33 BS EN 13203-2:2015 EN 13203-2:2015 (E) Annex ZA (informative) Relationship between this European Standard and the requirements of Commission Regulation (EC) n° 814/2013 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 requirements of Commission Regulation (EU) n° 814/2013 of August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to eco design requirements for water heaters and hot water storage tanks Once this standard is cited in the Official Journal of the European Union under that Commission Regulation, 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 requirements of that and associated EFTA regulations Table ZA.1 — Correspondence between this European Standard and Commission Regulation (EC) n° 814/2013 Clauses and subclauses of this EN 7.1 Requirements of Commission Regulation (EC) n° 814/2013 Qualifying remarks/Notes Annex II, 1.1 a), b), c) Requirements for water heating energy efficiency WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard 34 BS EN 13203-2:2015 EN 13203-2:2015 (E) Annex ZB (informative) Relationship between this European Standard and the requirements of Commission Regulation n° 812/2013 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 requirements of Commission Delegated Regulation (EU) n° 812/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of water heaters, hot water storage tanks and packages of water heater and solar device Once this standard is cited in the Official Journal of the European Union under that Commission Regulation, compliance with the clauses of this standard given in Table ZB.1 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding requirements of that and associated EFTA regulations Table ZB.1 — Correspondence between this European Standard and Commission Regulation (EC) n° 812/2013 Clauses and subclauses of this EN Requirements of Commission Regulation (EC) n° 812/2013 7.2 Annex III, point 1.1.1 or 1.1.2, and Annex VIII, Annual Electricity Consumption (AEC) 7.3 Annex III, point 1.1.1 or 1.1.2, and Annex VIII, Annual Fuel Consumption (AFC) Qualifying remarks/Notes WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard 35 BS EN 13203-2:2015 EN 13203-2:2015 (E) Annex ZC (informative) Relationship between this European Standard and the requirements of Commission Regulation (EU) n° 813/2013 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 requirements of Commission Regulation (EC) n° 813/2013 of August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to eco design requirements for space heaters and combination heaters Once this standard is cited in the Official Journal of the European Union under that Commission Regulation, compliance with the clauses of this standard given in Table ZC.1 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding requirements of that and associated EFTA regulations Table ZC.1 — Correspondence between this European Standard and Commission Regulation (EC) n° 813/2013 Clauses and subclauses of this EN 7.1 36 Requirements of Commission Regulation (EC) n° 813/2013 Annex II, 2(a), 2(b) Requirements for water heating energy efficiency Qualifying remarks/Notes BS EN 13203-2:2015 EN 13203-2:2015 (E) Annex ZD (informative) Relationship between this European Standard and the requirements of Commission Delegated Regulation (EU) n° 811/2013 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 requirements of Commission Delegated Regulation (EC) n° 811/2013 of 18 February 2013 implementing Directive 2005/32/EC of the European Parliament and of the Council with regard to energy labelling of space heaters, combination heaters, packages of space heater, temperature control and solar device and packages of combination heater, temperature control and solar device Once this standard is cited in the Official Journal of the European Union under that Commission Regulation, compliance with the clauses of this standard given in Table ZD.1 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding requirements of that and associated EFTA regulations Table ZD.1 — Correspondence between this European Standard and Commission Regulation (EC) n° 811/2013 Clauses and subclauses of this EN Requirements of Commission Regulation (EC) n° 811/2013 7.2 Annex V, table 7, and Annex VI, Annual Electricity Consumption (AEC) 7.3 Annex V, table 7, and Annex VI, Annual Fuel Consumption (AFC) Qualifying remarks/Notes 37 BS EN 13203-2:2015 EN 13203-2:2015 (E) Bibliography [1] 38 EN 13203-1, Gas-fired domestic appliances producing hot water - Appliances not exceding 70 kW heat input and 300 l water storage capacity - Part 1: Assessment of performance of hot water deliveries This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI 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