EN IEC 63159-2-1:2021

SLOVENSKI STANDARD
01-februar-2022
Gospodinjski električni pretočni grelniki vode - Metode za merjenje lastnosti - 2-1.
del: Večnamenski električni pretočni grelniki vode
Household electric instantaneous water heaters - Methods for measuring the
performance - Part 2-1: Multifunctional electric instantaneous water heaters
Ta slovenski standard je istoveten z: EN IEC 63159-2-1:2021
ICS:
91.140.65 Oprema za ogrevanje vode Water heating equipment
97.100.10 Električni grelniki Electric heaters
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63159-2-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2021
ICS 91.140.65
English Version
Household electric instantaneous water heaters - Methods for
measuring the performance - Part 2-1: Multifunctional electric
instantaneous water heaters
(IEC 63159-2-1:2021)
Chauffe-eau instantanés électrodomestiques - Méthodes de Elektro-Durchfluss-Wassererwärmer für den Hausgebrauch
mesure de l'aptitude à la fonction - Partie 2-1: Chauffe-eau - Prüfverfahren zur Messung der Gebrauchseigenschaften -
instantanés électriques multifonctions Teil 2-1: Multifunktionelle Elektro-Durchfluss-
(IEC 63159-2-1:2021) Wassererwärmer
(IEC 63159-2-1:2021)
This European Standard was approved by CENELEC on 2021-11-25. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63159-2-1:2021 E

European foreword
The text of document 59C/268/FDIS, future edition 1 of IEC 63159-2-1, prepared by SC 59C
“Electrical heating appliances for household and similar purposes” of IEC/TC 59 “Performance of
household and similar electrical appliances” was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 63159-2-1:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022–08–25
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024–11–25
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document is read in conjunction with EN IEC 63159-1:2021.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63159-2-1:2021 was approved by CENELEC as a
European Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by
(mod), the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here: www.cenelec.eu.
The Annex ZA of EN IEC 63159-1:2021 applies with the following changes:
Publication Year Title EN/HD Year
Add the following reference:
IEC 63159-1 2021 Household electric instantaneous water EN IEC 63159-1 2021
heaters - Methods for measuring the
performance - Part 1: General aspects

IEC 63159-2-1 ®
Edition 1.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household electric instantaneous water heaters – Methods for measuring the

performance –
Part 2-1: Multifunctional electric instantaneous water heaters

Chauffe-eau instantanés électrodomestiques – Méthodes de mesure de

l'aptitude à la fonction –
Partie 2-1: Chauffe-eau instantanés électriques multifonctions

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 91.140.65 ISBN 978-2-8322-1040-6

– 2 – IEC 63159-2-1:2021 © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General test conditions . 8
4.3 General conditions . 8
4.4 Test setup . 8
4.101 Symbols and units . 8
4.102 Time constants (measuring time) . 9
4.103 Test setup . 9
4.103.1 Measurement setup . 9
4.103.2 Setpoints . 9
4.103.3 Measurement of flow pressure and flow rate . 9
4.103.4 Temperature measurement . 9
5 Energy efficiency . 10
6 Performance tests . 10
6.1 Determination of classification factor CF . 10
6.1.1 General . 10
6.1.2 Definition of a reference instantaneous water heater . 10
6.1.3 Calculation method of nominal energy consumption . 11
6.1.4 Determination of energy demand of the sample . 11
6.1.5 Definition of classes H and E . 11
6.2 Determination of flow rates . 11
6.2.1 General . 11
6.2.2 E class water heater . 11
6.2.3 H class water heater . 12
6.2.4 Determination of the flow rate as a function of the pressure difference . 13
6.3 Pressure difference on activation of the heating capacity . 13
6.3.1 General . 13
6.3.2 E class water heater . 13
6.3.3 H class water heater . 13
6.4 Behaviour at switch-on of the appliance . 14
6.4.1 General . 14
6.4.2 E class water heater . 14
6.4.3 H class water heater . 15
6.5 Behaviour following the change of the flow rate . 15
6.5.1 General . 15
6.5.2 E class water heater . 15
6.5.3 H class water heater . 16
6.6 Behaviour following interruption of the flow . 17
6.6.1 General . 17
6.6.2 E class water heater . 17
6.6.3 H class water heater . 18
6.7 Behaviour at constant temperature setting . 19
6.7.1 General . 19
6.7.2 E class water heater . 19

IEC 63159-2-1:2021 © IEC 2021 – 3 –
6.7.3 H class water heater . 19
6.8 Behaviour following the change of the temperature selector setting . 19
6.8.1 General . 19
6.8.2 Electronically controlled appliances . 19
6.8.3 H class water heater . 20
6.9 Behaviour at voltage limits . 20
6.10 Additional tests for electronic instantaneous water heaters . 21
6.10.1 General . 21
6.10.2 Behaviour of the outlet temperature at decreasing water inlet
temperature . 21
6.10.3 Behaviour of the outlet temperature at changing water inlet temperature . 22
Annex A (normative) Load pattern . 23
Annex B (normative) Test setup . 24
Bibliography . 29

Figure B.101 – Single point (vented) . 24
Figure B.102 – Multi point (unvented) . 25
Figure B.103 – Test setup . 26
Figure B.104 – Damping device (Detail 4) . 27
Figure B.105 – Water connection part (Detail 5) . 27
Figure B.106 – Water connection part (Detail 6) . 28

Table 101 – Symbols and units . 8
Table 102 – Nominal values
...