EN 303-6:2019/prA1

Heating boilers - Part 6: Heating boilers with forced draught burners - Specific requirements for the domestic hot water operation and energy performance of water heaters and combination boilers with atomizing oil burners of nominal heat input not exceeding 70 kW

This document is composed of two parts.
The first part supplements EN 303-1, EN 303-2, EN 303-4 and EN 304, hereafter called boiler standards. It specifies the supplementary requirements and tests for the construction, safety, rational use of energy, fitness for purpose, classification and marking related to the domestic hot water operation of oil-fired water heaters and combination boilers.
The domestic hot water is produced on either the instantaneous or storage principle. The domestic hot water production is integrated or coupled, the whole being marketed as a single unit.
The second part covers the energy performance of domestic hot water production of the appliances covered by the first part.
This second part sets out a method for assessing the energy performance of the appliances. It defines a number of daily tapping cycles for each domestic hot water use such as kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of combination boilers and water heaters to be compared and matched to the needs of the user.
The heat output of the appliances covered by this standard does not exceed 400 kW.
In the case of combination boilers, with or without storage tank, domestic hot water production is integrated or coupled, the whole being marketed as a single unit.
This standard only covers type testing.

Heizkessel - Teil 6: Heizkessel mit Gebläsebrennern - Spezielle Anforderungen an die trinkwasserseitige Funktion und energetische Bewertung von Wassererwärmern und von Kombi-Kesseln mit Ölzerstäubungsbrennern mit einer Nennwärmeleistung kleiner als oder gleich 70 kW

Chaudières de chauffage - Partie 6 : Chaudières avec brûleurs à air soufflé - Exigences spécifiques à la fonction eau chaude sanitaire et à la performance énergétique des préparateurs d'eau chaude et des chaudières à deux services avec brûleurs fioul à pu

Kotli za ogrevanje - 6. del: Kotli z ventilatorskimi gorilniki - Posebne zahteve za delovanje in energijske lastnosti grelnikov sanitarne vode in kombiniranih kotlov z razprševalnimi oljnimi gorilniki z nazivno močjo do vključno 70 kW - Dopolnilo A1

General Information

• Status: Not Published
• Publication Date: 02-Jul-2023
• ICS: 91.140.10 - Central heating systems
• ICS: 91.140.65 - Water heating equipment
• Technical Committee: CEN/TC 57 - Central heating boilers
• Drafting Committee: CEN/TC 57/WG 8 - Energy efficiency requirements for warm water storage tanks
• Directive: 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
• Directive: 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
• Directive: 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
• Directive: 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
• Mandate: M/535 - [C(2016)2626) Standardisation request to the European standardisation organisations to draft harmonised European standards 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 813/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to eco-design requirements for space heaters and combination heaters 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 the energy labelling of space heaters, combination heaters, packages of space heaters, temperature control and solar device and packages of combination heater, temperature control and solar device
• Ref Project: SIST EN 303-6:2019/oprA1:2022 - Heating boilers - Part 6: Heating boilers with forced draught burners - Specific requirements for the domestic hot water operation and energy performance of water heaters and combination boilers with atomizing oil burners of nominal heat input not exceeding 70 kW

Relations

• Amends: EN 303-6:2019 - Heating boilers - Part 6: Heating boilers with forced draught burners - Specific requirements for the domestic hot water operation and energy performance of water heaters and combination boilers with atomizing oil burners of nominal heat input not exceeding 70 kW
• Effective Date: 16-Dec-2020

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 303-6:2019/oprA1:2022
01-december-2022
Kotli za gretje - 6. del: Kotli z ventilatorskimi gorilniki - Posebne zahteve za

delovanje in energijske lastnosti grelnikov sanitarne vode in kombiniranih kotlov z

razprševalnimi oljnimi gorilniki z nazivno močjo do vključno 70 kW - Dopolnilo A1

Heating boilers - Part 6: Heating boilers with forced draught burners - Specific

requirements for the domestic hot water operation and energy performance of water

heaters and combination boilers with atomizing oil burners of nominal heat input not

exceeding 70 kW

Heizkessel - Teil 6: Heizkessel mit Gebläsebrennern - Spezielle Anforderungen an die

trinkwasserseitige Funktion und energetische Bewertung von Wassererwärmern und von

Kombi-Kesseln mit Ölzerstäubungsbrennern mit einer Nennwärmeleistung kleiner als
oder gleich 70 kW

Chaudières de chauffage - Partie 6 : Chaudières avec brûleurs à air soufflé - Exigences

spécifiques à la fonction eau chaude sanitaire et à la performance énergétique des

préparateurs d'eau chaude et des chaudières à deux services avec brûleurs fioul à pu

Ta slovenski standard je istoveten z: EN 303-6:2019/prA1
ICS:
27.060.30 Grelniki vode in prenosniki Boilers and heat exchangers
toplote
91.140.65 Oprema za ogrevanje vode Water heating equipment
SIST EN 303-6:2019/oprA1:2022 en,fr,de

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

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SIST EN 303-6:2019/oprA1:2022
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SIST EN 303-6:2019/oprA1:2022
DRAFT
EUROPEAN STANDARD
EN 303-6:2019
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
November 2022
ICS
English Version
Heating boilers - Part 6: Heating boilers with forced
draught burners - Specific requirements for the domestic
hot water operation and energy performance of water
heaters and combination boilers with atomizing oil
burners of nominal heat input not exceeding 70 kW

Chaudières de chauffage - Partie 6 : Chaudières avec Heizkessel - Teil 6: Heizkessel mit Gebläsebrennern -

brûleurs à air soufflé - Exigences spécifiques à la Spezielle Anforderungen an die trinkwasserseitige

fonction eau chaude sanitaire et à la performance Funktion und energetische Bewertung von

énergétique des préparateurs d'eau chaude et des Wassererwärmern und von Kombi-Kesseln mit

chaudières à deux services avec brûleurs fioul à pu Ölzerstäubungsbrennern mit einer

Nennwärmeleistung kleiner als oder gleich 70 kW

This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 57.

This draft amendment A1, if approved, will modify the European Standard EN 303-6:2019. If this draft becomes an amendment,

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of

this amendment into the relevant national standard without any alteration.

This draft amendment 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, Türkiye 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

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 303-6:2019/prA1:2022 E

worldwide for CEN national Members.
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SIST EN 303-6:2019/oprA1:2022
EN 303-6:2019/prA1:2022 (E)
Contents

European foreword ....................................................................................................................................................... 3

1 Modification in Clause 6 ................................................................................................................................ 4

2 Modification in Clause 8 ................................................................................................................................ 4

3 Modification in Clause 10 ............................................................................................................................. 5

4 Modification in annexes ................................................................................................................................ 5

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

requirements of Commission Regulation (EU) No 814/2013 [OJ L 239, 6.9.2013]

aimed to be covered ....................................................................................................................................... 6

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

labelling requirements of Commission Regulation (EU)No 812/2013 [OJ L 239,

6.9.2013] aimed to be covered ................................................................................................................... 7

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

requirements of Commission Regulation (EU) No 813/2013 [OJ L 239, 6.9.2013]

aimed to be covered ....................................................................................................................................... 8

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

labelling requirements of Commission Regulation (EU) No 811/2013 [OJ L 239,

6.9.2013] aimed to be covered ................................................................................................................... 9

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SIST EN 303-6:2019/oprA1:2022
EN 303-6:2019/prA1:2022 (E)
European foreword

This document (EN 303-6:2019/prA1:2022) has been prepared by Technical Committee CEN/TC 57

“Central heating boilers”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.

This document has been prepared under a Standardization Request given to CEN by the European

Commission and the European Free Trade Association, and supports essential requirements of EU

Directive(s) / Regulation(s).

For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, ZB, ZC and ZD, which is

an integral part of EN 303-6:2019.
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SIST EN 303-6:2019/oprA1:2022
EN 303-6:2019/prA1:2022 (E)
1 Modification in Clause 6
In 6.3.2.2.3, after the 2nd indent paragraph
Replace the paragraph and Formula (1) by the following:

It is assumed that the mean water temperature (T ) of the tank at moment t is equal to the arithmetic

0 1
mean of the inlet and outlet temperatures at that moment:
TT+
e s
T = (1)

The preliminary conditions are met if this temperature T is equal to (65 ± 2) °C.

In 6.3.2.2.3, after Formula (5)
Replace the key with the following
q are the losses of the tank for a temperature rise of 45 K, in kilowatts (kW);
a45
t2 − t1 is the period of cooling, in hours (h);

T is the mean water temperature of the tank at moment t , in degrees Celsius (°C);

0 1

T is the corrected mean water temperature of the tank at moment t , in degrees Celsius (°C);

fc 2
Tamb is the mean ambient temperature during cooling, in degrees Celsius (°C);

V is the water capacity of the tank (including the water in any integral heat exchanger), in litres (l).

This value is declared by the manufacturer and checked from the drawings.
2 Modification in Clause 8
In 8.5, after Formula (16)
Replace the key with the following
Qelec,cor is the corrected total electrical energy, in kWh;
Qelec,m is the measured total electrical energy, in kWh;
D is the measured energy delivered to the water according to 5.3, in kWh;
H2O

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

ref
In 8.6.3 after Formula (18)
Replace the key with the following

Qelec,cor,stby is the daily consumption of auxiliary energy in standby mode, in kWh;

Q is the auxiliary energy measured during the test in standby mode, in kWh;
elec,m

t is the duration of the test in hour (t = 1 h for the appliances without control cycle).

a a
8.7, after Formula (19)
Replace the key with the following
Q is the daily consumption of auxiliary energy in off mode, in kWh;
elec,cor,off
Q is the auxiliary energy measured during the test in off mode, in kWh.
elec,m,off
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SIST EN 303-6:2019/oprA1:2022
EN 303-6:2019/prA1:2022 (E)
3 Modification in Clause 10

Replace the title of Clause 10 and replace the first 5 paragraphs until first indent by the following:

10 Water heater parameters
10.1 Water heating energy efficiency

The water heating energy efficiency (η ), in %, expressed on GCV is calculated by:

— for appliances without smart control:
ref
η ⋅ 100
Q +
...