EN 50193-2-1:2016

SLOVENSKI STANDARD
01-julij-2016
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Electric instantaneous water heaters - Part 2-1: Methods for measuring the performance
- Multifunctional electric instantaneous water heaters
Elektro-Durchfluss-Wassererwärmer - Teil 2 1: Verfahren zur Messung der
Gebrauchseigenschaften - Multifunktionelle Elektro-Durchfluss-Wassererwärmer
Chauffe-eau électriques instantanés - Partie 2-1: Méthodes de mesure de l’aptitude à la
fonction - Chauffe-eau électriques instantanés multifonctions
Ta slovenski standard je istoveten z: EN 50193-2-1:2016
ICS:
91.140.65 Oprema za ogrevanje vode Water heating equipment
97.100.10 (OHNWULþQLJUHOQLNL Electric heaters
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50193-2-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2016
ICS 91.140.65
English Version
Electric instantaneous water heaters - Part 2-1: Methods for
measuring the performance - Multifunctional electric
instantaneous water heaters
Chauffe-eau électriques instantanés - Partie 2-1: Méthodes Elektro-Durchfluss-Wassererwärmer - Teil 2 1: Verfahren
de mesure de l'aptitude à la fonction - Chauffe-eau zur Messung der Gebrauchseigenschaften -
électriques instantanés multifonctions Multifunktionelle Elektro-Durchfluss-Wassererwärmer
This European Standard was approved by CENELEC on 2016-03-28. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50193-2-1:2016 E
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General test conditions . 7
4.4 Test setup . 8
4.101 Time constants (measuring time) . 8
4.102 Test setup . 8
4.102.1 Measurement setup . 8
4.102.2 Set points . 8
4.102.3 Measurement of flow pressure and flow rate . 8
4.102.4 Temperature measurement . 8
5 Energy efficiency . 8
6.101 Performance tests . 8
6.101.1 General . 8
6.101.2 Determination of flow rates . 8
6.101.2.1 Introduction . 8
6.101.2.2 Electronically controlled or regulated appliances . 9
6.101.2.3 Hydraulically controlled appliances . 9
6.101.2.4 Determination of the flow rate as a function of the pressure difference . 10
6.101.3 Pressure difference on activation of the heating capacity . 10
6.101.3.1 Introduction . 10
6.101.3.2 Electronically controlled or regulated appliances . 10
6.101.3.3 Hydraulically controlled appliances . 10
6.101.4 Behaviour at switch-on of the appliance . 11
6.101.4.1 Introduction . 11
6.101.4.2 Electronically controlled or regulated appliances . 11
6.101.4.3 Hydraulically controlled appliances . 12
6.101.5 Behaviour following the change of the flow rate . 12
6.101.5.1 Introduction . 12
6.101.5.2 Electronically controlled or regulated appliances . 12
6.101.5.3 Hydraulically controlled appliances . 13
6.101.6 Behaviour following interruption of the flow . 14
6.101.6.1 Introduction . 14
6.101.6.2 Electronically controlled or regulated appliances . 14
6.101.6.3 Hydraulically controlled appliances . 15
6.101.7 Behaviour at constant temperature setting . 15
6.101.7.1 Introduction . 15
6.101.7.2 Electronically controlled or regulated appliances . 15
6.101.7.3 Hydraulically controlled appliances . 16
6.101.8 Behaviour following the change of the temperature selector setting . 16
6.101.8.1 Introduction . 16
6.101.8.2 Electronically controlled appliances . 16
6.101.8.3 Hydraulically controlled appliances . 17
6.101.9 Behaviour at voltage limits . 17
7.101 Additional tests for electronic instantaneous water heaters . 18
7.101.1 General . 18
7.101.2 Behaviour of the outlet temperature at decreasing water inlet temperature . 18
7.101.3 Behavior of the outlet temperature at changing water inlet temperature . 19
Annex A (normative) Load pattern . 20
Annex B (normative) Test setup . 21
Annex ZZA (informative) Relationship between this European Standard and the energy labelling
requirements of Commission Delegated Regulation (EU) No 812/2013 aimed to be covered . 25
Annex ZZB (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EU) No 814/2013 aimed to be covered . 26
Bibliography . 27

European foreword
This document (EN 50193-2-1:2016) has been prepared by CLC/TC 59X "Performance of household and
similar electrical appliances".
The following dates are proposed:
• latest date by which this document has to be (dop) 2017-03-28
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2019-03-28
conflicting with this document have to
be withdrawn
This document is to be read in conjunction with EN 50193-1:2013.
Clauses, subclauses, notes, tables and figures which are additional to those in EN 50193-1:2013 are
numbered starting from 101.
This document has been prepared under a mandate given to CENELEC by the European Commission and
the European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZZA and ZZB, which are integral parts of this
document.
1 Scope
This clause of Part 1 is applicable with the following exception:
This European Standard applies to electrical instantaneous water heaters designed to operate as
multifunctional appliances with electric rated power >2 kW.
This European Standard specifies tests for the assessment of the performance.
2 Normative references
This clause of Part 1 is applicable with the following exception:
Addition:
EN 50193-1:2013, Electric instantaneous water heaters - Part 1: General requirements
3 Terms and definitions
This clause of Part 1 is applicable with the following exceptions:
Addition:
3.101
setpoint value
changeable value which is allocated to the appliance or the individual components thereof
3.102
flow pressure 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
usually a physical value is reaching 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, if the
value finally has reached 90% of the difference between (average) starting value and (average) final value
3.104
10%/90% method
usually a physical value is changing with a time delay in an asymptotic manner between starting value and
final value. To reach a valid measurement result, a starting point and a stop point have to be defined for the
measurement. The measurement is started, if the physical value has first reached 10% of the difference
between (average) starting value and (average) final value. The measurement is stopped, if the value finally
has reached 90% of the difference
Figure 101
3.105
response time
time interval between the beginning of the changing of a value or parameter and the moment a steady state
condition has obtained. The 90% method has to be used
3.106
volume flow rate/water flow rate
flow rate of water expressed in
...