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INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATI

INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 17.140.20; 97.100.10 ISBN 978-2-8322-4461-6 ® Registered trademark of the International Electrotechnical Commission Marque déposée de la Commission Electrotechnique Internationale ® Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé. IEC 60704-2-18 Edition 1.0 2022-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Household and similar electrical appliances – Test code for the determination of airborne acoustical noise – Part 2-18: Particular requirements for electric water heaters Appareils électrodomestiques et analogues – Code d'essai pour la détermination du bruit aérien – Partie 2-18: Exigences particulières pour les chauffe-eau électriques This is a preview - click here to buy the full publication – 2 – IEC 60704-2-18:2022 © IEC 2022 CONTENTS FOREWORD ........................................................................................................................... 3 INTRODUCTION ..................................................................................................................... 5 1 Scope .............................................................................................................................. 6 2 Normative references ...................................................................................................... 6 3 Terms and definitions ...................................................................................................... 7 4 Measurement methods and acoustical environments ....................................................... 7 5 Instrumentation .............................................................................................................. 12 6 Operation and location of appliances under test ............................................................ 12 7 Measurement of sound pressure levels .......................................................................... 13 8 Calculation of sound pressure and sound power levels .................................................. 14 9 Information to be recorded ............................................................................................. 14 10 Information to be reported ............................................................................................. 14 Annexes ............................................................................................................................... 15 Annex A (normative) Standard test table .............................................................................. 15 Bibliography .......................................................................................................................... 16 Figure 101 – Scanning patterns according to ISO 9614-2 ...................................................... 10 Table 101 – C values ............................................................................................................ 10 Table 102 – S values ............................................................................................................. 11 Table 1 – Standard deviations of sound power levels ............................................................ 11 Table 2 – Standard deviations for declaration and verification ............................................... 11 This is a preview - click here to buy the full publication IEC 60704-2-18:2022 © IEC 2022 – 3 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________ HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – TEST CODE FOR THE DETERMINATION OF AIRBORNE ACOUSTICAL NOISE – Part 2-18: Particular requirements for electric water heaters FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. IEC 60704-2-18 has been prepared by subcommittee 59C: Electrical heating appliances for household and similar purposes, of IEC technical committee 59: Performance of household and similar electrical appliances. It is an International Standard. The text of this International Standard is based on the following documents: Draft Report on voting 59C/262/CDV 59C/266A/RVC Full information on the voting for its approval can be found in the report on voting indicated in the above table. The language used for the development of this International Standard is English. This is a preview - click here to buy the full publication – 4 – IEC 60704-2-18:2022 © IEC 2022 This document is intended to be used in conjunction with IEC 60704‑1:2021, Household and similar electrical appliances – Test code for the determination of airborne acoustical noise – Part 1: General requirements. The relevant text of IEC 60704‑1:2021 as amended by this publication establishes the test code for electrical water heaters. This document supplements or modifies the corresponding clauses in IEC 60704-1:2021. When a particular subclause of IEC 60704‑1:2021 is not mentioned in this document, that subclause is applicable as far as reasonable. Where this document states "addition", "modification", "replacement" or "deletion", the relevant requirements, test specifications or explanatory matter in IEC 60704‑1:2021 should be adapted accordingly. Subclauses, figures and tables that are additional to those in IEC 60704‑1:2021 are numbered starting from 101. Unless notes are in a new subclause or involve notes in IEC 60704‑1:2021, they are numbered starting from 101, including those in a replaced clause or subclause. A list of all the parts in the IEC 60704 series, under the general title Household and similar electrical appliances – Test code for the determination of airborne acoustical noise, can be found on the IEC website. This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are described in greater detail at www.iec.ch/publications. The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under webstore.iec.ch in the data related to the specific document. At this date, the document will be • reconfirmed, • withdrawn, • replaced by a revised edition, or • amended. This is a preview - click here to buy the full publication IEC 60704-2-18:2022 © IEC 2022 – 5 – INTRODUCTION The measuring conditions specified in this part of IEC 60704 provide for sufficient accuracy in determining the noise emitted and comparing the results of measurements taken by different laboratories whilst simulating, as far as possible, the practical use of household water heaters. It is recommended to consider the determination of noise levels as part of a comprehensive testing procedure covering many aspects of the properties and performance of household water heaters. Special forms of electric water heaters generate remarkable noise, which is not common for conventional electric water heaters. In order to capture these special products, this document was developed. It provides a noise measurement procedure, which serves as an instrument for realizing technical improvements on the products and prevents false declarations in regulatory systems (e.g. European regulation on energy labelling). NOTE As stated in the introduction to IEC 60704-1, this test code is concerned with airborne noise only. This is a preview - click here to buy the full publication – 6 – IEC 60704-2-18:2022 © IEC 2022 HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – TEST CODE FOR THE DETERMINATION OF AIRBORNE ACOUSTICAL NOISE – Part 2-18: Particular requirements for electric water heaters 1 Scope This clause of IEC 60704‑1:2021 is applicable except as follows: Addition: These particular requirements apply to single-unit electric water heaters for household and similar use intended for placing on the floor against a wall, for building-in or placing under a counter, a kitchen worktop or under a sink, for wall-mounting or on a counter. NOTE 1 Conventional electric water heaters that make use of the Joule effect in electric resistance heating elements normally do not produce any noise emissions. However, there are products with noise-producing components on the market. Examples of such components are motors and pumps e.g. for increasing water pressure. NOTE 2 Noise of control elements is disregarded because of the sporadic character and its normally very low sound level. This document does not uploads/s1/info-iec60704-2-18-ed1-0-b.pdf