IEC 60704-2-18:2022

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

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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

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.20; 97.100.10 ISBN 978-2-8322-1073-7

– 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

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
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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.

– 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
...