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Gas-fired domestic appliances producing hot water - Part 4: Assessment of energy consumption of gas combined heat and power appliances (mCHP) producing hot water and electricity

This document is applicable to gas-fired mCHP appliances producing domestic hot water and electricity. The electricity is generated in a process linked to the production of useful heat.
It applies to a mCHP appliances marketed as single unit or as a package fully specified by a manufacturer that have:
-   a gas heat input not exceeding 400 kW,
-   an electrical output not exceeding 50 kW, and
-   a hot water storage capacity (if any) not exceeding 2 000 l.
EN 13203 1:2015 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a variety of uses. It also gives a system for presenting the information to the user.
The present document sets out a method for assessing the energy performance of gas fired mCHP appliances. It defines a number of daily tapping cycles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of different gas-fired appliances to be compared and matched to the needs of the user.
When the mCHP generator does not supply domestic hot water in the summer period, the present standard is not applicable. FprEN 13203 2:2018 is used for performance assessment of these generators.

Gasbeheizte Geräte für die sanitäre Warmwasserbereitung für den Hausgebrauch - Teil 4: Bewertung des Energieverbrauchs von Gasgeräten mit Kraft-Wärme-Kopplung (Mikro-KWK) zur Warmwasserbereitung und Stromerzeugung

Dieses Dokument ist anwendbar auf gasbefeuerte Geräte mit Mikro-Kraft-Wärme-Kopplung (µKWK-Geräte), die häusliches sanitäres Warmwasser und elektrische Energie bereitstellen. Die elektrische Energie wird in einem Prozess erzeugt, der mit der Bereitstellung von Nutzwärme verbunden ist.
Sie ist anzuwenden auf µKWK-Geräte, die als Einheit vermarktet werden oder für Systeme, die von einem Hersteller umfassend beschrieben sind und:
-   eine Gaswärmebelastung von 400 kW nicht überschreiten;
-   eine elektrische Leistung von 50 kW nicht überschreiten; und
-   ein Warmwasser-Speichervolumen (sofern vorhanden) von 2 000 l nicht überschreiten.
EN 13203-1:2015 legt mehrere qualitative und quantitative Leistungsstufen für die sanitäre Warmwasserbereitung für eine Auswahl von Benutzungsarten fest. Sie enthält ebenfalls ein System zur Bereitstellung von Angaben für den Anwender.
Das vorliegende Dokument legt ein Verfahren zur Bewertung des Energieverhaltens der gasbefeuerten µKWK Geräte fest. Es definiert eine Anzahl täglicher Zapfprogramme für jede häusliche Warmwasserverwendung in der Küche, zum Duschen und Baden und für Kombinationen dieser Verwendungsarten und legt die entsprechenden Prüfverfahren fest, die den Vergleich des Energieverhaltens unterschiedlicher gasbefeuerter Geräte ermöglichen und auf die Bedürfnisse des Benutzers ausgerichtet sind.
Wenn der µKWK-Generator im Sommer kein sanitäres Warmwasser liefert, ist die vorliegende Norm nicht anwendbar. Zur Bewertung der Leistung solcher Generatoren wird FprEN 13203-2:2018 angewendet.

Appareils domestiques produisant de l'eau chaude sanitaire utilisant les combustibles gazeux - Partie 4 : Evaluation de la consommation énergétique des appareils à gaz de production combinée de chaleur et d'électricité (mCHP) produisant de l'eau chaude et de l'électricité

Le présent document s’applique aux appareils de micro-cogénération utilisant des combustibles gazeux pour produire de l’eau chaude sanitaire et de l’électricité. L’électricité est produite par un procédé permettant la valorisation d’une énergie thermique.
Il s’applique aux appareils de micro-cogénération commercialisés comme une seule unité ou comme un produit combiné entièrement spécifié par le fabricant, qui ont :
-   un débit calorifique de gaz inférieur ou égal à 400 kW ;
-   une puissance électrique inférieure ou égale à 50 kW ; et
-   une capacité de stockage en eau chaude (le cas échéant) inférieure ou égale à 2 000 l.
L’EN 13203-1:2015 définit en termes qualitatifs et quantitatifs la performance en puisage d’eau chaude sanitaire pour une variété d’usages. Elle fournit également un système pour présenter les informations à l’utilisateur.
Le présent document définit une méthode pour déterminer les performances énergétiques des appareils de micro-cogénération utilisant des combustibles gazeux. Il définit plusieurs cycles de puisage journaliers pour l’usage d’eau chaude sanitaire, cuisine, douche, bain et une combinaison de ces derniers, ainsi que les modes opératoires d’essai correspondants, afin de pouvoir comparer les performances énergétiques des différents appareils utilisant les combustibles gazeux et de les adapter aux besoins de l’utilisateur.
La présente norme n’est pas applicable lorsque le micro-cogénérateur (mCHP) ne fournit pas d’eau chaude sanitaire en période estivale. Le FprEN 13203-2:2018 est utilisé pour déterminer les performances de ces générateurs.

Plinske gospodinjske naprave za pripravo tople sanitarne vode - 4. del: Ocenjevanje rabe energije plinskih naprav (mCHP) za soproizvodnjo tople vode in elektrike

General Information

Status

Not Published

Public Enquiry End Date

01-Mar-2021

ICS

91.140.65 - Water heating equipment

Technical Committee

PLN - Gas appliances for domestic use

Current Stage

4020 - Public enquire (PE) (Adopted Project)

Start Date

30-Dec-2020

Due Date

19-May-2021

Completion Date

23-Apr-2021

Directive

2009/125/EC - Directive 2005/32/EC of the European Parliament and of the Council of 6 July 2005 establishing a framework for the setting of ecodesign requirements for energy-using products and amending Council Directive 92/42/EEC and Directives 96/57/EC and 2000/55/EC of the European Parliament and of the Council

2010/30/EU - DIRECTIVE 2010/30/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 19 May 2010 on the indication by labelling and standard product information of the consumption of energy and other resources by energy-related products (recast)

811/2013 - Commission Delegated Regulation (EU) No 811/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of space heaters, combination heaters, packages of space heater, temperature control and solar device and packages of combination heater, temperature control and solar device

812/2013 - Commission Delegated Regulation (EU) No 812/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of water heaters, hot water storage tanks and packages of water heater and solar device

813/2013 - Commission Regulation (EU) No 813/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for space heaters and combination heaters

814/2013 - Commission Regulation (EU) No 814/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for water heaters and hot water storage tanks

Mandate

M/534 - [C(2015)2625] Standardisation request to the European standardisation organisations pursuant to Article 10(1) of Regulation (EU) No 1025/2012 of the European Parliament and of the Council in support of implementation of Commission Regulation (EU) No 814/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for water heaters and hot water storage tanks and Commission Delegated Regulation (EU) No 812/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of water heaters, hot water storage tanks and packages of water heater and solar device

Ref Project

prEN 13203-4 - Gas-fired domestic appliances producing hot water - Part 4: Assessment of energy consumption of gas combined heat and power appliances (mCHP) producing hot water and electricity

RELATIONS

Revised

SIST EN 13203-4:2017 - Gas-fired domestic appliances producing hot water - Part 4: Assessment of energy consumption of gas combined heat and power appliances (mCHP) producing hot water and electricity

Effective Date

01-Feb-2021

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Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 13203-4:2021
01-februar-2021
Plinske gospodinjske naprave za pripravo tople sanitarne vode - 4. del:
Ocenjevanje rabe energije plinskih naprav (mCHP) za soproizvodnjo tople vode in
elektrike
Gas-fired domestic appliances producing hot water - Part 4: Assessment of energy
consumption of gas combined heat and power appliances (mCHP) producing hot water
and electricity

Gasbeheizte Geräte für die sanitäre Warmwasserbereitung für den Hausgebrauch - Teil

4: Bewertung des Energieverbrauchs von Gasgeräten mit Kraft-Wärme-Kopplung (Mikro-

KWK) zur Warmwasserbereitung und Stromerzeugung

Appareils domestiques produisant de l'eau chaude sanitaire utilisant les combustibles

gazeux - Partie 4 : Evaluation de la consommation énergétique des appareils à gaz de

production combinée de chaleur et d'électricité (mCHP) produisant de l'eau chaude et de

l'électricité
Ta slovenski standard je istoveten z: prEN 13203-4
ICS:
91.140.65 Oprema za ogrevanje vode Water heating equipment
oSIST prEN 13203-4:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 13203-4:2021
---------------------- Page: 2 ----------------------
oSIST prEN 13203-4:2021
DRAFT
EUROPEAN STANDARD
prEN 13203-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2021
ICS 91.140.65 Will supersede EN 13203-4:2016
English Version
Gas-fired domestic appliances producing hot water - Part
4: Assessment of energy consumption of gas combined
heat and power appliances (mCHP) producing hot water
and electricity

Appareils domestiques produisant de l'eau chaude Gasbeheizte Geräte für die sanitäre

sanitaire utilisant les combustibles gazeux - Partie 4 : Warmwasserbereitung für den Hausgebrauch - Teil 4:

Évaluation de la consommation énergétique des Bewertung des Energieverbrauchs von Gasgeräten mit

appareils à gaz de production combinée de chaleur et Kraft-Wärme-Kopplung (Mikro-KWK) zur

d'électricité (mCHP) produisant de l'eau chaude et de Warmwasserbereitung und Stromerzeugung

l'électricité

This draft European Standard is submitted to CEN members for second enquiry. It has been drawn up by the Technical

Committee CEN/TC 109.

If this draft becomes a European Standard, CEN 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.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC

Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 13203-4:2021
prEN 13203-4:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 6

3 Terms and definitions ................................................................................................................................... 6

4 General test conditions ................................................................................................................................. 8

4.1 Reference conditions ..................................................................................................................................... 8

4.2 Measurement uncertainties ........................................................................................................................ 8

4.2.1 General ................................................................................................................................................................ 8

4.2.2 Steady-state conditions ................................................................................................................................. 8

4.3 Test conditions ................................................................................................................................................. 8

4.3.1 General ................................................................................................................................................................ 8

4.3.2 Test room ........................................................................................................................................................... 8

4.3.3 Water supply ..................................................................................................................................................... 8

4.3.4 Initial adjustment of the appliance ........................................................................................................... 8

4.3.5 Conditions for the determination of the maximum load profile .................................................... 8

4.3.6 Electrical supply .............................................................................................................................................. 8

4.3.7 Delivered electrical energy ......................................................................................................................... 8

5 Determination of the energy consumption and electrical energy generation of the

appliance ............................................................................................................................................................ 8

5.1 General ................................................................................................................................................................ 8

5.2 Load profiles ..................................................................................................................................................... 9

5.3 Measurement of the energy recovered by the useful water ............................................................ 9

5.4 Calculation of gas energy .............................................................................................................................. 9

5.4.1 Calculation of the daily gas energy consumption in summer mode ............................................. 9

5.4.2 Calculation of daily gas energy consumption in winter mode ........................................................ 9

5.4.3 Daily gas energy consumption seasonally weighted .......................................................................... 9

5.5 Calculation of the daily electrical energy ............................................................................................... 9

5.5.1 Calculation of the delivered electrical energy ................................................................................... 10

5.5.2 Calculation of the produced electrical energy ................................................................................... 12

5.5.3 Calculation of electrical auxiliary energy ............................................................................................ 13

5.6 5.6 Measurement of energy consumption and production in standby mode......................... 13

5.7 Measurement of energy consumption and production in standby mode ................................ 13

5.7.1 General ............................................................................................................................................................. 13

5.7.2 Calculation of daily gas energy consumption in standby mode .................................................. 14

5.7.3 Calculation of daily auxiliary energy in standby mode .................................................................. 14

5.8 Measurement of the daily auxiliary electrical energy consumption in off mode ................. 15

6 Determination of the wasted water ....................................................................................................... 15

7 Eco design Related Product Data ............................................................................................................ 15

7.1 Water heating energy efficiency ............................................................................................................. 15

7.2 Smart control factor (SFC) and smart ................................................................................................... 15

7.3 Annual fuel consumption (AFC) .............................................................................................................. 15

7.4 Annual electricity delivery (AED) .......................................................................................................... 15

7.5 Mixed water at 40°C (V40) for storage water heaters .................................................................... 16

Annex A (informative) Examples of test conditions .................................................................................... 17

Annex B (informative) Examples of test rig and measurement devices ................................................ 18

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oSIST prEN 13203-4:2021
prEN 13203-4:2021 (E)

Annex C (informative) Declaration of the Maximum Load Profile ........................................................... 19

Annex D (normative) Test points ......................................................................................................................... 20

Annex ZA (informative) Relationship between this European Standard and the ecodesign

requirements of Commission Regulation (EU) n° 814/2013 [OJEU L239 of 6

September 2013] aimed to be covered ................................................................................................. 22

Table ZA.1 — Correspondence between this European Standard and Commission
Regulation (EU) No 814/2013 of 2 August 2013 implementing Directive
2009/125/EC of the European Parliament and of the Council with regard to
ecodesign requirements for water heaters and hot water storage tanks [OJEU L285
of 31 October 2009] and Commission’s standardization request M/534/C (2015)

2625 final ......................................................................................................................................................... 22

Annex ZB (informative) Relationship between this European Standard and the energy

labelling requirements of Commission Delegated Regulation (EU) No 812/2013

[OJEU L239 of 6 September 2013] aimed to be covered ................................................................. 23

Table ZB.1 — Correspondence between this European Standard and Commission Delegated

Regulation (EU) No 812/2013 of 18 February 2013 supplementing Directive
2010/30/EU of the European Parliament and of the Council with regard to the
energy labelling of water heaters, hot water storage tanks and packages of water
heater and solar device [OJEU L153 of 18 June 2010] and Commission’s

standardization request “M/534/C (2015) 2626 final” .................................................................. 23

Annex ZC (informative) Relationship between this European Standard and the ecodesign

requirements of Commission Regulation (EU) n° 813/2013 [OJEU L239 of 6

September 2013] aimed to be covered ................................................................................................. 24

Table ZC.1 — Correspondence between this European Standard and Commission
Regulation (EU) No 813/2013 of 2 August 2013 implementing Directive
2009/125/EC of the European Parliament and of the Council with regard to
ecodesign requirements for space heaters and combination heaters [OJEU L285 of
31 October 2009] and Commission’s standardization request M/535/C (2015) 2626

final .................................................................................................................................................................... 24

Annex ZD (informative) Relationship between this European Standard and the energy

labelling requirements of Commission Delegated Regulation (EU) No 811/2013

[OJEU L239 of 6 September 2013] aimed to be covered ................................................................. 25

Table ZD.1 — Correspondence between this European Standard and Commission Delegated

Regulation (EU) No 811/2013 of 18 February 2013 supplementing Directive
2010/30/EU of the European Parliament and of the Council with regard to energy
labelling of space heaters, combination heaters, packages of space heater,
temperature control and solar device and packages of combination heater,
temperature control and solar device [OJEU L153 of 18 June 2010] and

Commission’s standardization request “M/535/C (2015) 2625 final” ..................................... 25

Bibliography ................................................................................................................................................................. 26

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oSIST prEN 13203-4:2021
prEN 13203-4:2021 (E)
European foreword

This document (prEN 13203-4:2021) has been prepared by Technical Committee CEN/TC 109 “Central

heating boilers using gaseous fuels”, the secretariat of which is held by NEN.
This document is currently submitted to the 2 Enquiry.
This document will supersede EN 13203-4:2016.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), see informative Annex ZA, B, C or D, which are an integral part of

this document.

The safety operation of the boiler is not covered by this standard. Safety is proved by means of the

essential safety requirements of the Gas Appliances Regulation n°426/2016/UE. This may be achieved

by compliance with the appropriate existing harmonized standards.

NOTE Useful standards are EN 26, EN 89, EN 15502-1, EN 15502-2-1, EN 15502-2-2 and EN 50465:2015.

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oSIST prEN 13203-4:2021
prEN 13203-4:2021 (E)
Introduction

This document refers to clauses of prEN 13203-2:2021 or adapts clauses by stating in the

corresponding clause, on the principle:

— shall be according to prEN 13203-2:2021, (clause number) with the following modification;

— shall be according to prEN 13203-2:2021, (clause number) with the following addition;

— prEN 13203-2:2021, (clause number) is replaced by the following;
— prEN 13203-2:2021, (clause number) is not applicable.
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oSIST prEN 13203-4:2021
prEN 13203-4:2021 (E)
1 Scope

This document is applicable to gas-fired mCHP appliances producing domestic hot water and electricity.

The electricity is generated in a process linked to the production of useful heat.

It applies to a mCHP appliances marketed as single unit or as a package fully specified by a

manufacturer that have:
— a gas heat input not exceeding 400 kW;
— an electrical output not exceeding 50 kW and
— a hot water storage capacity (if any) not exceeding 2000 l.

prEN 13203-1:2021 sets out in qualitative and quantitative terms the performance in delivery of

domestic hot water for a variety of uses. It also gives a system for presenting the information to the

user.

The present document sets out a method for assessing the energy performance of gas fired mCHP

appliances. It defines a number of daily tapping cycles for each domestic hot water use, kitchen, shower,

bath and a combination of these, together with corresponding test procedures, enabling the energy

performances of different gas-fired appliances to be compared and matched to the needs of the user.

When the mCHP generator does not supply domestic hot water in the summer period, the present

standard is not applicable. prEN 13203-2:2021 is used for performance assessment of these generators.

2 Normative references

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.

EN 13203-2:— , Gas-fired domestic appliances producing hot water - Part 2: Assessment of energy

consumption
3 Terms and definitions

For the purposes of this document, the terms and definitions given in prEN 13203-2:2021 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— Electropedia I.E.C. available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
mCHP appliance

appliance which is placed on the market either as a complete package or specified as a complete

package to deliver safely and effectively the heating, electrical power and the domestic hot water

service claimed, comprising as relevant:
— primary heat and power generator;
— supplementary heat generator;
Under preparation. Stage at time of publication: prEN 13203-2:2020
---------------------- Page: 8 ----------------------
oSIST prEN 13203-4:2021
prEN 13203-4:2021 (E)
— flue ducts;
— thermal store
3.2
mCHP generator
preferential heat and power generator
3.3
supplementary heat generator
non-preferential heat source providing peak load
3.4
power conditioning and control system

equipment used to change electrical voltage level and waveform, or otherwise alter or regulate the

electrical output of the primary heat and power generator to make it suitable and safe for export to

other components within or outside the appliance including controls used to operate the primary heat

and power generator such a gas valve, safety controls and internal cooling pumps
3.5
electric auxiliary energy (E )
Auxiliary

electric energy consumed by the mCHP appliance components associated with the supplementary heat

generator, thermal management and controls (e.g. pump, fan, valves, control unit)

Note 1 to entry E is expressed in kWh
Auxiliary
3.6
produced electrical energy (E )
CHP
electrical energy produced by the mCHP generator
Note 1 to entry ECHP is expressed in kWh
3.7
delivered electrical energy (E )
delivered
electrical energy delivered by the mCHP appliance to the grid
Note to entry E is expressed in kWh
delivered
3.8
electrical output CHP (P )
CHP
electrical output including electrical consumption of auxiliaries
3.9
delivered electrical output (P )
delivered
electrical output excluding electrical consumption of auxiliaries
3.10
electrical consumption of auxiliaries

difference between the electrical ouput including electrical consumption of auxiliaries (P ) and the

CHP
electrical output excluding electrical consumption of auxiliaries (P )
delivered
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oSIST prEN 13203-4:2021
prEN 13203-4:2021 (E)
4 General test conditions
4.1 Reference conditions
Shall be according to EN 13203-2:2021, 4.1 with the following addition:

After the last indent “— electrical supply voltage”: add “— (410 ± 4) V three phase.”

4.2 Measurement uncertainties
4.2.1 General
Shall be according to prEN 13203-2:2021, 4.2.1.
4.2.2 Steady-state conditions
Shall be according to prEN 13203-2:2021, 4.2.1.
4.3 Test conditions
4.3.1 General

Shall be according to prEN 13203-2:2021, 4.3.1 except the second sentence modified as follows:

"For combination mCHP generator, the tests shall be …".
4.3.2 Test room
Shall be according to prEN 13203-2:2021, 4.3.2.
4.3.3 Water supply
Shall be according to prEN 13203-2:2021, 4.3.3.
4.3.4 Initial adjustment of the appliance
Shall be according to prEN 13203-2:2021, 4.3.4.
4.3.5 Conditions for the determination of the maximum load profile
Shall be according to prEN 13203-2:2021, 4.3.5.
4.3.6 Electrical supply
Shall be according to prEN 13203-2:2021, 4.3.6.
The following Clause 4.3.7 is added:
4.3.7 Delivered electrical energy

Arrangement shall be made to enable the delivered electrical energy to be measured.

NOTE The delivered electrical energy to be measured may be dissipated by a resistor or exported to the grid.

5 Determination of the energy consumption and electrical energy generation of
the appliance
5.1 General
Shall be according to prEN 13203-2:2021, 5.1.
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oSIST prEN 13203-4:2021
prEN 13203-4:2021 (E)
5.2 Load profiles
Shall be according to prEN 13203-2:2021, 5.2.
5.3 Measurement of the energy recovered by the useful water
Shall be according to prEN 13203-2:2021, 5.3.
5.4 Calculation of gas energy
5.4.1 Calculation of the daily gas energy consumption in summer mode
Shall be according to prEN 13203-2:2021, 5.4.1.
5.4.2 Calculation of daily gas energy consumption in winter mode
Shall be according to prEN 13203-2:2021, 5.4.2 with the following modifications:
Formula (5) is replaced by the following:
gas,S
Q = (5)
gas,W
 
η ⋅ Q
CHP,Th−100 gas,S
1+⋅0,5  − 1
 Q 
ref
 
Into the key, “η ” is replaced by ” η ” as follows:
CH-nom CHP,Th-100

“η is the useful thermal efficiency at nominal heat input of the mCHP generator (100 % by

CHP,Th-100

mCHP and 100 % by the supplementary heater) at the temperature regime specified in

the product standard EN 50465:xxxx for the appliance space heating function or at the

maximum declared average temperature. The useful thermal efficiency at nominal heat

input will be determined including hydraulic circuit and storage tank if applicable. See

the Figures D.1 and D.2.”
The last 4th paragraphs are replaced by the following:

“The heat engine for a combination mCHP appliance in winter mode spends most of the demand time on

space heating, outside any night (or day) set-back periods (which require a lower room temperature

and hence heating load).

When a combination mCHP appliance switches from space heating to domestic hot water mode and

back to space heating the standby losses usually generated from the domestic hot water mode are not

lost but are instead used in the space heating mode.

That means combination heaters have lower domestic hot water heat losses in winter mode than in

summer mode.

These energy savings benefits of combination mCHP appliances have to be taken in account.”

5.4.3 Daily gas energy consumption seasonally weighted
Shall be according to prEN 13203-2:2021, 5.4.3.
5.5 Calculation of the daily electrical energy
prEN 13203-2:2021, 5.5 is replaced by the following:
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oSIST prEN 13203-4:2021
prEN 13203-4:2021 (E)
5.5.1 Calculation of the delivered electrical energy
5.5.1.1 General

The delivered electrical energy from the appliance in the summer mode (E , in kWh) shall be

delivered,24

measured during the tapping cycle test as described in 5.2 and according to the instructions (see also

Figure 1 showing the test point). It starts at the same time and finishes at the same time as the

measurement of the gas consumption.
Key
1 mCHP appliance boundary
2 mCHP generator
3 Power conditioning and controm system
4 mCHP generator supporting system
5 Auxiliaries (supplementary heat generator, fan, pump)
6 E
CHP
7 E
delivered
8 Mains
Figure 1 — Electrical measurements — Test points

NOTE Depending on the construction of the appliance E can be measured directly or indirectly. If

CHP

necessary, the E can be calculated by measuring the E and subtract the measured value of electrical

CHP Delivered
consumption of the auxiliaries (see Figure 1).
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5.5.1.2 Calculation of daily delivered electrical energy in the summer mode

The daily delivered electrical energy in the summer mode shall be calculated according to the following

formula:
E ⋅ Q
delivered,24 ref
E = (6)
delivered,S
H O
where
E is the daily delivered electrical energy in summer mode, in kWh;
delivered,S
E is the measured electrical energy during the 24 h cycling test, in kWh;
delivered,24

Q is the total delivered energy of used tapping cycle, value from Tables 1, 2, 3, 4, 5, 6 and 7, in

ref
kWh;
Q is the measured energy delivered to the water according to 5.3, in kWh.
H O
5.5.1.3 Calculation of daily delivered electrical energy in the winter mode

The daily delivered electrical energy in the winter mode shall be calculated according to the following

formula:
gas,W
EE ⋅ (7)
delivered,W delivered,S
gas,S
where
E is the daily electrical delivered energy calculated in winter mode, in kWh;
delivered,W

E is the daily electrical delivered energy calculated in summer mode according to

delivered,S
5.5.1.2, in kWh;
Q is the daily energy consumed in winter mode calculated using NCV according to
gas,W
5.4.2, in kWh;
Q is the daily energy consumed in summer mode calculated using NCV according to
gas,S
5.4.1, in kWh.
5.5.1.4 Daily electrical delivered energy seasonally weighted

The daily electrical delivered energy is weighted to take into account both summer and winter modes,

by the following formula:
D D
W S
E E ⋅+ E ⋅ (8)
delivered,p delivered,W delivered,S
DD+ DD+
WS WS
where
E is the weighted daily electrical delivered energy, in kWh;
delivered,p

E is the daily electrical delivered energy calculated in winter mode according to

delivered,W
5.5.1.3, in kWh;

E is the daily electrical delivered energy calculated in summer mode according to

delivered,S
5.5.1.2, in kWh;
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oSIST prEN 13203-4:2021
prEN 13203-4:2021 (E)
D is the number of days of winter mode, this number is equal to 200;
D is the number of days of summer mode, this number is equal to 166.
5.5.2 Calculation of the produced electrical energy
5.5.2.1 General

The produced electrical energy from the appliance in the summer mode (E , in kWh) shall be

CHP,24

measured during the tapping cycle test as described in 5.2 and according to the manufacturer

instructions (see also Figure 1 showing the test point). It starts at the same time and finishes at the

same time as the measurement of the gas consumption.
5.5.2.2 Calculation of daily produced electrical energy in the summer mode

The daily produced electrical energy in the summer mode shall be calculated according to the following

formula:
EQ⋅
CHP,24 ref
E = (9)
CHP,S
H O
where
E is the daily produced electrical energy in summer mode, in kWh;
CHP,S
E is the daily produced electrical energy during the 24 h cycling test, in kWh;
CHP,24

Qref is the total delivered energy of used tapping cycle, value from Tables 1, 2, 3, 4, 5, 6 and

7, in kWh;
Q is the measured energy recovered by the water according to 5.3, in kWh.
H O
5.5.2.3 Calculation of daily produced electrical energy in the winter mode

The daily produced electrical energy in the winter mode shall be calculated according to the following

formula:
gas,W
E E ⋅ (10)
CHP,W CHP,S
gas,S
where
E is the daily electrical produced energy calculated in winter mode, in kWh;
CHP,W
E is the daily electrical produced energy calculated in summer mode, according
CHP,S
to 5.5.2.2 in kWh;
Q is the daily energy consumed in winter mode calculated using NCV according
gas,W
to 5.4.2, in kWh;
Q is the daily energy consumed in summer mode calculated using NCV according
gas,S
to 5.4.1, in kWh.
5.5.2.4 Daily produced electrical energy seasonally weighted

The daily produced electrical energy is weighted to take into account both summer and winter modes,

by the following formula:
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oSIST prEN 13203-4:2021
prEN 13203-4:2021 (E)
W S
EE= ⋅ + E ⋅ (11)
CHP,p CHP,W CHP,S
D ++D D D
WS WS
where
E is the weighted daily electrical produced energy, in kWh;
CHP,p

E is the daily electrical produced energy calculated in winter mode according to 5.5.2.3,

...

SLOVENSKI STANDARD
oSIST prEN 13203-4:2018
01-december-2018
3OLQVNHJRVSRGLQMVNHQDSUDYH]DSULSUDYRWRSOHVDQLWDUQHYRGHGHO
2FHQMHYDQMHNROLþLQHHQHUJLMH]DVRSURL]YRGQMRWRSOHYRGHLQHOHNWULNHP&+3
Gas-fired domestic appliances producing hot water - Part 4: Assessment of energy
consumption of gas combined heat and power appliances (mCHP) producing hot water
and electricity

Gasbeheizte Geräte für die sanitäre Warmwasserbereitung für den Hausgebrauch - Teil

4: Bewertung des Energieverbrauchs von Gasgeräten mit Kraft-Wärme-Kopplung (Mikro-

KWK) zur Warmwasserbereitung und Stromerzeugung

Appareils domestiques produisant de l'eau chaude sanitaire utilisant les combustibles

gazeux - Partie 4 : Evaluation de la consommation énergétique des appareils à gaz de

production combinée de chaleur et d'électricité (mCHP) produisant de l'eau chaude et de

l'électricité
Ta slovenski standard je istoveten z: prEN 13203-4
ICS:
91.140.65 Oprema za ogrevanje vode Water heating equipment
oSIST prEN 13203-4:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 13203-4:2018
---------------------- Page: 2 ----------------------
oSIST prEN 13203-4:2018
DRAFT
EUROPEAN STANDARD
prEN 13203-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2018
ICS 91.140.65 Will supersede EN 13203-4:2016
English Version
Gas-fired domestic appliances producing hot water - Part
4: Assessment of energy consumption of gas combined
heat and power appliances (mCHP) producing hot water
and electricity

Appareils domestiques produisant de l'eau chaude Gasbeheizte Geräte für die sanitäre

sanitaire utilisant les combustibles gazeux - Partie 4 : Warmwasserbereitung für den Hausgebrauch - Teil 4:

Evaluation de la consommation énergétique des Bewertung des Energieverbrauchs von Gasgeräten mit

appareils à gaz de production combinée de chaleur et Kraft-Wärme-Kopplung (Mikro-KWK) zur

d'électricité (mCHP) produisant de l'eau chaude et de Warmwasserbereitung und Stromerzeugung

l'électricité

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 109.

If this draft becomes a European Standard, CEN 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.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC

Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

worldwide for CEN national Members.
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oSIST prEN 13203-4:2018
prEN 13203-4:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 6

3 Terms and definitions ................................................................................................................................... 6

4 General test conditions ................................................................................................................................. 7

4.1 Reference conditions ..................................................................................................................................... 7

4.2 Measurement uncertainties ........................................................................................................................ 7

4.2.1 General ................................................................................................................................................................ 7

4.2.2 Steady state conditions ................................................................................................................................. 7

4.3 Test conditions ................................................................................................................................................. 7

4.3.1 General ................................................................................................................................................................ 7