SIST EN IEC 63159-2-1:2022
(Main)Household electric instantaneous water heaters - Methods for measuring the performance - Part 2-1: Multifunctional electric instantaneous water heaters
Household electric instantaneous water heaters - Methods for measuring the performance - Part 2-1: Multifunctional electric instantaneous water heaters
This document applies to electrical instantaneous water heaters designed to operate as multifunctional appliances with an electric rated power > 2 kW.
This document specifies tests for the assessment of the performance.
Elektro-Durchfluss-Wassererwärmer für den Hausgebrauch – Prüfverfahren zur Messung der Gebrauchseigenschaften – Teil 2-1: Multifunktionelle Elektro-Durchfluss-Wassererwärmer
Chauffe-eau instantanés électrodomestiques - Méthodes de mesure de l’aptitude à la fonction - Partie 2-1: Chauffe-eau instantanés électriques multifonctions
L'IEC 63159-2-1:2021 s'applique aux chauffe-eau instantanés électriques conçus pour fonctionner comme des appareils multifonctions de puissance électrique assignée > 2 kW.
Le présent document spécifie les essais pour l'évaluation de l'aptitude à la fonction.
La présente Norme internationale doit être utilisée conjointement avec l'IEC 63159-1:2021.
Gospodinjski električni pretočni grelniki vode - Metode za merjenje lastnosti - 2-1. del: Večnamenski električni pretočni grelniki vode
Ta dokument se uporablja za električne pretočne grelnike vode, ki so zasnovani za delovanje kot večfunkcijske naprave z nazivno električno močjo > 2 kW.
Ta dokument določa preskuse za oceno lastnosti.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 63159-2-1:2022
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
SIST EN IEC 63159-2-1:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 63159-2-1:2022
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SIST EN IEC 63159-2-1:2022
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
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SIST EN IEC 63159-2-1:2022
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.
2
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SIST EN IEC 63159-2-1:2022
EN IEC 63159-2-1:2021 (E)
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
3
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SIST EN IEC 63159-2-1:2022
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
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.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 63159-2-1:2022
– 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
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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 for E class water heater . 12
Table 103 – Nominal values for H class water heater . 12
Table 104 – Flow pressure and flow rate for multi point appliances . 13
Table 105 – Flow pressure and flow rate for single point appliances . 13
Table 106 – Pressure difference and flow rate . 13
Table 107 – Pressure difference and flow rate . 14
Table 108 – Behaviour at switch on of the appliance at different temperature selector
settings . 15
Table 109 – Behaviour at switch on of the appliance at different settings . 15
Table 110 – Behaviour following the change of the flow rate at different temperature
selector settings . 16
Table 111 – Behaviour following the change of the flow rate at different settings . 17
Table 112 – Behaviour following interruption of the flow . 18
Table 113 – Behaviour following interruption of the flow . 18
Table 114 – Behaviour at constant temperature setting . 19
Table 115 – Behaviour following the change of the temperature selector setting at a
flow rate of 50% . 20
Table 116 – Behaviour following the change of the temperature selector setting at a
flow rate of 100% . 20
Table 117 – Behaviour at voltage limits . 21
Table 118 – Behaviour of the outlet temperature at decreasing water inlet temperature . 22
Table 119 – Behaviour of the outlet temperature following the increase of the water
inlet temperature . 22
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD ELECTRIC INSTANTANEOUS WATER HEATERS –
METHODS FOR MEASURING THE PERFORMANCE –
Part 2-1: Multifunctional electric instantaneous 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.
International Standard IEC 63159-2-1 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.
The text of this International Standard is based on the following documents:
Draft Report on voting
59C/268/FDIS 59C/272/RVD
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.
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SIST EN IEC 63159-2-1:2022
IEC 63159-2-1:2021 © IEC 2021 – 5 –
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/standardsdev/publications.
This International Standard is to be used in conjunction with IEC 63159-1:2021.
This standard supplements or modifies the corresponding clauses in IEC 63159-1. When a
particular subclause of IEC 63159-1 is not mentioned in this standard, that subclause is
applicable as far as reasonable. Where this standard states "addition", "modification" or
"replacement", the relevant requirements, test specifications or explanatory matter in
IEC 63159-1 should be adapted accordingly.
Subclauses or figures that are additional to those in IEC 63159-1 are numbered starting from
101. Additional annexes are lettered AA, BB, etc.
A list of all the parts in the IEC 63159 series, published under the general title Household
electric instantaneous water heaters – Methods for measuring the performance, can be found
on the IEC website.
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.
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HOUSEHOLD ELECTRIC INSTANTANEOUS WATER HEATERS –
METHODS FOR MEASURING THE PERFORMANCE –
Part 2-1: Multifunctional electric instantaneous water heaters
1 Scope
This clause of IEC 63159-1:2021 is applicable with the following exception:
Addition:
This document applies to electrical instantaneous water heaters designed to operate as
multifunctional appliances with an electric rated power > 2 kW.
This document specifies tests for the assessment of the performance.
2 Normative references
This clause of IEC 63159-1:2021 is applicable with the following exception:
Addition:
IEC 63159-1:2021, Household electric instantaneous water heaters – Methods for measuring
the performance – Part 1: General aspects
3 Terms and definitions
This clause of IEC 63159-1 is applicable with the following exceptions:
Addition:
3.101
setpoint value
changeable value that is allocated to the appliance or the individual components thereof
3.102
pressure drop on activation of the heating capacity
pressure drop in the instantaneous water heater, at which the heating capacity is, and remains,
activated
3.103
90 % method
stop point of the measurement when 90% of value is reached
Note 1 to entry: Usually, a physical value reaches a final (average) value in an asymptotic manner. To reach a valid
measurement result, a stop point of the measurement has to be defined. The measurement is stopped when the
value finally reaches 90 % of the difference between the (average) starting value and the (average) final value.
3.104
10 %/90 % method
range between the start and stop points
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Note 1 to entry: Usually, a physical value changes with a time delay in an asymptotic manner between the start
value and the final value. To reach a valid measurement result, a start point and a stop point have to be defined for
the measurement. The measurement is started when the physical value first reaches 10 % of the difference between
the (average) starting value and the (average) final value. The measurement is stopped when the value finally
reaches 90 % of the difference.
3.105
response time
time interval between the beginning of the changing of a value or parameter and the moment a
steady-state condition is obtained
Note 1 to entry: The 90 % method shall be used.
3.106
flow rate
rate at which water flows, expressed in l/min
3.107
heating-up duration
time interval between the opening of the withdrawal device and the obtainment of the final outlet
temperature
Note 1 to entry: The 90 % method shall be used.
3.108
pressure difference
difference between the pressure at the water inlet and the water outlet of the appliance at a
defined flow rate
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3.109
multifunctional appliances
instantaneous water heater that shall supply one or more outlets suitable for several functions,
for instance kitchen sinks, hand-washing sinks, showers and bathtubs
4 General test conditions
This clause of IEC 63159-1:2021 is applicable with the following exceptions:
4.3 General conditions
Modification:
The cold water temperature T shall be 15 °C ± 5 °C for the performance tests.
cold
4.4 Test setup
This subclause of IEC 63159-1:2021 is not applicable.
Addition:
4.101 Symbols and units
For the purposes of this document, the symbols and units of Table 101 apply.
Table 101 – Symbols and units
Symbol Unit Description
T °C The minimum setting of the temperature setting mechanism settable by user at which
min
the appliance heats.
If no user-accessible temperature selector is available, the relevant measurements
with T are not performed.
min
T °C Standard hot water temperature setpoint for various tests: 38 °C. If the temperature
38
setting mechanism settable by user does not permit an outlet temperature setting of
38 °C, a temperature as close as possible above 38 °C as possible shall be chosen.
This temperature shall be stated in the test report and shall be used for any further
measurements, instead of 38 °C.
The positions of the temperature setting mechanism shall be marked for reproducible
settings, taking into consideration the fact that T settings may depend on the
38
direction of the rotation of a knob.
If no user-accessible temperature selector is available, the temperature factory
setting is defined to be the T setting.
38
T °C The maximum setting of the temperature setting mechanism settable by the user.
max
If no user accessible temperature selector is available, the relevant measurements
with T are not performed.
max
T °C Temperature at the minimum permanent setting of the power selector settable by user
Pmin
at which the appliance heats.
If no user-accessible power selector is available, the relevant measurements with
T are not performed.
Pmin
T
°C Temperature at the maximum permanent setting of the power selector settable by
Pmax
user.
If no user-accessible power selector is available, the temperature factory setting is
defined to be the T setting.
Pmax
l/min The flow rate where the power consumption is 90 % of rated power at T and an inlet
V 38
90 % P
temperature of 15 °C.
Factor
K The correction value for V if the inlet temperature differs by more than 1 K from
V 90 % P
15 °C.
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IEC 63159-2-1:2021 © IEC 2021 – 9 –
Symbol Unit Description
l/min The flow rate related to the outlet temperature of 38 °C.
V
38
T °C Temperature from which counting of useful energy content starts.
m
T
°C Minimum (peak) temperature to be achieved during tapping.
p
T °C Cold water inlet temperature.
cold
F l/min Minimum flow rate to be reached during tapping.
P kW Minimum required instantaneous heating power to fulfil tapping.
min
T S Tapping duration.
d
P kW Minimum requited heating power of the appliance.
real
P
kW Nominal heating power of the appliance.
nom
Q kWh Nominal daily energy consumption of the appliance.
nom
Q kWh Real daily energy consumption of the appliance.
r
4.102 Time constants (measuring time)
Time constants shall be determined by means of the 10 %/90 % method.
4.103 Test setup
4.103.1 Measurement setup
The appliance shall be fixed in accordance with the installation instructions.
The measurement setup shall correspond to Figure B.101 for open-outlet ap
...
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