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CEN

EN 304:2017

(Main)

Heating boilers - Test code for heating boilers for atomizing oil burners

Heating boilers - Test code for heating boilers for atomizing oil burners

This European Standard applies to the determination of the performances of heating boilers and combi boilers fired by liquid fuels. The requirements for the heating performances are laid down in EN 303 1:2016 and EN 303 2:2016.
This test code includes the requirements and recommendations for carrying out and evaluating the procedure for testing boilers and also the details of the technical conditions under which the tests will be carried out.
The requirements and the performance of testing for the sanitary hot water production of combi boilers are laid down in EN 303 6.

Heizkessel - Prüfregeln für Heizkessel mit Ölzerstäubungsbrennern

Die Prüfregeln gelten für die Ermittlung der Leistung von mit flüssigen Brennstoffen befeuerten Heizkesseln und Kombikesseln. Die Anforderungen an die Heizleistungen sind in prEN 303 1:2016 und prEN 303 2:2016 festgelegt.
Die Regeln enthalten die Anforderungen und Empfehlungen für die Durchführung und Auswertung der Versuche zur Prüfung von Kesseln sowie Angaben über die technischen Bedingungen, unter denen die Prüfungen stattfinden sollen.
Die Anforderungen und die Durchführung von Prüfungen für die sanitäre Warmwasserbereitung von Kombikesseln sind in EN 303 6 festgelegt.

Chaudières de chauffage - Règles d'essai pour les chaudières pour brûleurs à fioul à pulvérisation

La présente Norme européenne s'applique à la détermination des performances des chaudières de chauffage et des chaudières à deux services fonctionnant avec des brûleurs à air soufflé. Les exigences relatives aux performances de chauffage sont établies dans le prEN 303 1:2016 et le prEN 303 2:2016.
Ces règles incluent les exigences et les recommandations relatives à la réalisation et à l'évaluation de la procédure d'essai des chaudières ainsi qu'aux détails des conditions techniques dans lesquelles seront réalisés les essais.
Les exigences et la réalisation des essais relatifs à la production d'eau chaude sanitaire par des chaudières à deux services sont établies dans le prEN 303 6.

Kotli za gretje - Preskušanje kotlov z razprševalnimi oljnimi gorilniki

Preskusna koda se uporablja za določanje zmogljivosti kotlov za gretje, kombiniranih kotlov in grelnikov vode na tekoča goriva. Zahteve so določene v standardih EN 303-1 in EN 303-2. Ta koda zajema zahteve in priporočila za izvajanje ter ocenjevanje postopka preskušanja kotlov in podrobnosti o tehničnih pogojih, pri katerih je treba izvajati preskuse.

General Information

Status
Published
Publication Date
31-Oct-2017
Withdrawal Date
30-May-2018
ICS
91.140.10 - Central heating systems
Technical Committee
CEN/TC 57 - Central heating boilers
Drafting Committee
CEN/TC 57/WG 2 - Test method for the determination of efficiency at a partial load of 30%
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
01-Nov-2017
Due Date
29-Sep-2017
Completion Date
01-Nov-2017
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
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
Mandate
M/495 - Standardisation mandate to CEN, CENELEC and ETSI under Directive 2009/125/EC relating to harmonised standards in the field of Ecodesign
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 304:2018 - Heating boilers - Test code for heating boilers for atomizing oil burners

Relations

Replaces
EN 15034:2006/AC:2008 - Heating boilers - Condensing heating boilers for fuel oil
Effective Date
08-Jun-2022
Replaces
EN 15034:2006 - Heating boilers - Condensing heating boilers for fuel oil
Effective Date
08-Jun-2022
Replaces
EN 304:1992/A2:2003 - Heating boilers - Test code for heating boilers for atomizing oil burners
Effective Date
08-Nov-2017
Replaces
EN 304:1992 - Heating boilers - Test code for heating boilers for atomizing oil burners
Effective Date
08-Nov-2017
Replaces
EN 304:1992/A1:1998 - Heating boilers - Test code for heating boilers for atomizing oil burners
Effective Date
08-Nov-2017
Revised
prEN 304 - Heating boilers - Test code for heating boilers for atomizing oil burners
Effective Date
19-Jan-2023

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SLOVENSKI STANDARD
01-januar-2018
1DGRPHãþD
SIST EN 15034:2007
SIST EN 15034:2007/AC:2008
SIST EN 304:1997
SIST EN 304:1997/A1:1999
SIST EN 304:1997/A2:2004
Kotli za gretje - Preskušanje kotlov z razprševalnimi oljnimi gorilniki
Heating boilers - Test code for heating boilers for atomizing oil burners
Heizkessel - Prüfregeln für Heizkessel mit Ölzerstäubungsbrennern
Chaudières de chauffage - Règles d'essai pour les chaudières pour brûleurs à fioul à
pulvérisation
Ta slovenski standard je istoveten z: EN 304:2017
ICS:
27.060.10 *RULOQLNLQDWHNRþHLQWUGR Liquid and solid fuel burners
JRULYR
97.100.40 *UHOQLNLQDWHNRþHJRULYR Liquid fuel heaters
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 304
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2017
EUROPÄISCHE NORM
ICS 91.140.10 Supersedes EN 15034:2006, EN 304:1992
English Version
Heating boilers - Test code for heating boilers for
atomizing oil burners
Chaudières de chauffage - Règles d'essai pour les Heizkessel - Prüfregeln für Heizkessel mit
chaudières pour brûleurs à fioul à pulvérisation Ölzerstäubungsbrennern
This European Standard was approved by CEN on 2 July 2017.

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. 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 CEN
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 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 304:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General conditions for testing . 5
5 Measurement accuracies and uncertainties . 6
6 Measurements for the heating mode . 7
6.1 General . 7
6.2 Determination of the nominal heat output . 7
6.3 Determination of the boiler efficiency at nominal heat output. 7
6.4 Performance of testing . 8
6.4.1 General test conditions . 8
6.4.2 Draught adjustment . 8
6.4.3 Establishment of steady-state conditions . 8
6.4.4 Test period . 8
6.5 Calculation . 8
6.5.1 General . 8
6.5.2 Nominal heat output . 8
6.5.3 Boiler heat input . 8
6.5.4 Boiler efficiency . 9
6.6 Determination of the waterside resistance . 9
6.7 Determination of the standby heat loss . 10
6.7.1 General . 10
6.7.2 Standby heat loss method 1 . 11
6.7.3 Standby heat loss method 2 . 12
6.8 Efficiency at 30 % of the nominal heat output . 14
6.8.1 General . 14
6.8.2 Efficiency at 30 % - Method 1 (time dependent method) . 14
6.8.3 Efficiency at 30 % - Method 2 (load dependent method) . 14
6.9 Auxiliary electricity consumption . 15
6.10 Seasonal space heating efficiency . 16
6.11 Verification of nominal condensing output . 16
6.12 Formation of condensation . 16
6.13 Functional test for the temperature sensing control type TR and temperature
sensing control type STB on the boiler . 16
6.14 Surface temperature . 20
6.15 Floor temperatures . 20
6.16 Limiting temperature of the test panels . 20
6.17 Emission values of NO and CO . 21
x
6.17.1 General . 21
6.17.2 Units . 21
6.17.3 Assemblies of a boiler with various burners . 21
7 Measurement of the sanitary water production mode . 21
8 Test report and other documents . 22
Annex A (normative) Calculations for the heating mode . 23
A.1 Volume measurement . 23
A.2 Calculation of combustion parameters . 23
A.3 Determination of air factor (𝜆𝜆) and excess air (e) . 27
A.4 Test rigs . 28
A.5 Calculation of the nominal heat output P . 29
N
A.6 Calculation of the heat input . 30
A.7 Calculation of efficiency . 30
A.8 Calculation of the heat losses q , q , q . 32
A U S
A.9 Standby heat loss (P ). 35
Stby
A.10 Calculation of the seasonal space heating energy efficiency . 37
A.11 Fuel characteristics . 38
Annex B (informative) Applicable symbols and units . 40
Annex C (informative) Criteria for the adaptation of forced draught burners using liquid
fuels to heating boilers . 43
Annex D (informative) Information for setting up and evaluation of the test rig . 45
Annex E (informative) Determination of the heat losses of the test rig . 46
Annex ZA (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EU) No [813/2013] aimed to be covered . 47
Annex ZB (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Delegated Regulation (EU) No [811/2013] aimed to be
covered . 48
Bibliography . 49

European foreword
This document (EN 304:2017) has been prepared by Technical Committee CEN/TC 57 “Central heating
boilers”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by May 2018, and conflicting national standards shall be
withdrawn at the latest by May 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 304:1992 and EN 15034:2006.
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 Annexes ZA and ZB, which are an integral part of
this document.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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 the United Kingdom.
1 Scope
This European Standard applies to the determination of the performances of heating boilers and combi
boilers fired by liquid fuels. The requirements for the heating performances are laid down in
EN 303-1:2017 and EN 303-2:2017.
This test code includes the requirements and recommendations for carrying out and evaluating the
procedure for testing boilers and
...

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