EN 303-1:2017

Heating boilers - Part 1: Heating boilers with forced draught burners - Terminology, general requirements, testing and marking

This European Standard applies to boilers used for central heating (heating boilers) with forced draught burners with a nominal heat output not exceeding 1 000 kW, which are operated either with negative pressure (natural draught boilers) or with positive pressure (pressurized boiler) in the combustion chamber, in accordance with the boiler instructions.
This European Standard specifies the necessary terminology, the requirements on the materials and testing of them, and marking requirements for heating boilers.
Particular requirements for boilers that can be used with open vented systems are contained in EN 303 4.
The requirements of this standard apply to heating boilers that are tested on an authorized test rig.
Boilers in accordance with this standard are designed for the heating of central heating installations in which the heat carrier is water, and the maximum allowable operating temperature of which is restricted to 100 °C. The maximum allowable operating pressure is 8 bar.
For boilers and water heaters (storage or continuous flow heater) this standard only applies to the parts which are necessarily subject to the operating conditions of the heating boiler (heating part).
This standard does not apply to gas boilers with atmospheric burners, boilers for solid fuels, boilers with oil vaporization burners. For these boilers there are further requirements.

Heizkessel - Teil 1: Heizkessel mit Gebläsebrennern - Begriffe, Allgemeine Anforderungen, Prüfung und Kennzeichnung

Diese Europäische Norm gilt für Kessel von Zentralheizungen (Heizkessel) mit Gebläsebrennern bis zu einer Nennwärmeleistung von 1 000 kW, die nach den Festlegungen des Kesselherstellers entweder mit Unterdruck (Naturzugkessel) oder mit Überdruck (Überdruckkessel) im Brennraum betrieben werden.
Diese Norm legt die notwendigen Begriffe sowie die Anforderungen an Werkstoffe, Prüfungen und Kennzeichnungen für Heizkessel fest.
Für Heizkessel, die in offenen Heizungsanlagen betrieben werden, gilt EN 303-4.
Die Anforderungen dieser Norm gelten für Heizkessel, die auf einem zugelassenen Prüfstand geprüft werden.
Heizkessel in Übereinstimmung mit dieser Norm sind für die Beheizung von zentralen Heizungsanlagen bestimmt, deren Wärmeträger Wasser mit einer maximal zulässigen Betriebstemperatur von 100°C ist. Der maximal zulässige Betriebsdruck ist 8 bar.
Diese Norm gilt nur für die Bauelemente von Heizkesseln und Wassererwärmern (Speicher- oder Durchlaufwassererwärmer), die den Betriebsbedingungen des Heizkessels zwangsläufig unterworfen sind (Heizungsteil).
Die Norm gilt nicht für Gasheizkessel mit atmosphärischen Brennern, Heizkessel für feste Brennstoffe und Heizkessel mit Ölverdampfungsbrennern. Für diese Kessel sind andere Anforderungen zu erfüllen.

Chaudières de chauffage - Partie 1 : Chaudières avec brûleurs à air soufflé - Terminologie, prescriptions générales, essais et marquage

La présente Norme européenne s'applique aux chaudières de chauffage central (chaudières de chauffage) équipées de brûleurs à air soufflé d'une puissance utile nominale inférieure ou égale à 1 000 kW, fonctionnant soit en dépression (chaudières à tirage naturel), soit en pression (chaudières pressurisées) dans la chambre de combustion, selon les indications du fabricant de la chaudière.
La présente norme spécifie la terminologie nécessaire, les exigences relatives aux matériaux et aux essais qui s'y rapportent, ainsi que les exigences de marquage pour les chaudières de chauffage.
Pour les chaudières qui peuvent être utilisées avec un vase d’expansion ouvert, les exigences particulières de construction sont précisées dans l'EN 303-4.
Les exigences de la présente norme s'appliquent aux chaudières de chauffage soumises à essai sur un banc d'essai agréé.
Les chaudières conformes à la présente norme sont conçues pour le chauffage d'installations de chauffage central dont le fluide caloporteur est l'eau et dont la température de fonctionnement maximale autorisée est limitée à 100 °C. La pression de service maximale autorisée est de 8 bar.
Pour les chaudières mixtes et les chauffe-eau (dispositif de chauffage à accumulation ou à production instantanée), la présente norme s'applique uniquement aux éléments qui sont nécessairement soumis aux conditions de fonctionnement de la chaudière de chauffage (partie chauffage).
La présente norme ne s'applique pas aux chaudières à gaz à brûleur atmosphérique, aux chaudières pour combustibles solides, ni aux chaudières à brûleur fioul à caléfaction. Ces chaudières sont soumises à d'autres exigences.

Kotli za gretje - 1. del: Kotli z ventilatorskimi gorilniki - Terminologija, splošne zahteve, preskušanje in označevanje

Ta evropski standard se uporablja za standardne kotle in nizkotemperaturne kotle z ventilatorskimi gorilniki z nazivno izhodno toploto, ki ne presega 1000 kW, ki delujejo bodisi z negativnim tlakom (kotli na naraven vlek) bodisi s pozitivnim tlakom (kotli pod tlakom) v zgorevalni komori, v skladu z navodili proizvajalca kotla. Ta standard določa potrebno terminologijo, zahteve glede materialov in njihovo preskušanje ter zahteve glede označevanja kotlov za gretje. Posebne zahteve za kotle, ki jih je mogoče uporabljati z odprtimi prezračevalnimi sistemi, so v standardu EN 303-4. Zahteve tega standarda veljajo za grelne kotle, ki se preskušajo na pooblaščeni napravi za preskušanje. Kotli za gretje v skladu s tem standardom so namenjeni za gretje v sistemih centralnega ogrevanja, pri čemer toploto prenaša voda. Najvišja dovoljena obratovalna temperatura je 100 °C, najvišji dovoljen obratovalni tlak pa 8 barov.  V zvezi s kotli z vgrajenim ali pritrjenim (termoakumulacijskim ali pretočnim) grelnikom vode se ta standard uporablja le za tiste dele grelnika vode, za katere obvezno veljajo obratovalni pogoji kotla za gretje (grelni del). Ta standard se ne uporablja za plinske kotle z atmosferskimi gorilniki, kotle na trda goriva, kondenzacijske kotle na nafto ali plin in kotle z oljnimi uparjalniki. Za te kotle veljajo še dodatne zahteve.

General Information

• Status: Published
• Publication Date: 05-Sep-2017
• Withdrawal Date: 30-Mar-2018
• ICS: 01.040.91 - Construction materials and building (Vocabularies)
• ICS: 91.140.10 - Central heating systems
• Technical Committee: CEN/TC 57 - Central heating boilers
• Drafting Committee: CEN/TC 57/WG 5 - Heating boilers for fuel oil
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 04-Mar-2023
• Completion Date: 04-Mar-2023
• 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: 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
• 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 303-1:2017 - Heating boilers - Part 1: Heating boilers with forced draught burners - Terminology, general requirements, testing and marking

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 303-1:1999/A1:2003 - Heating boilers - Part 1: Heating boilers with forced draught burners - Terminology, general requirements, testing and marking
• Effective Date: 13-Sep-2017
• Replaces: EN 303-1:1999 - Heating boilers - Part 1: Heating boilers with forced draught burners - Terminology, general requirements, testing and marking
• Effective Date: 01-Oct-2014

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2017
1DGRPHãþD
SIST EN 15034:2007
SIST EN 15034:2007/AC:2008
SIST EN 303-1:1999
SIST EN 303-1:1999/A1:2004
.RWOL]DJUHWMHGHO.RWOL]YHQWLODWRUVNLPLJRULOQLNL7HUPLQRORJLMDVSORãQH
]DKWHYHSUHVNXãDQMHLQR]QDþHYDQMH
Heating boilers - Part 1: Heating boilers with forced draught burners - Terminology,
general requirements, testing and marking
Heizkessel - Teil 1: Heizkessel mit Gebläsebrenner - Begriffe, Allgemeine
Anforderungen, Prüfung und Kennzeichnung
Chaudières de chauffage - Partie 1 : Chaudières avec brûleurs à air soufflé -
Terminologie, prescriptions générales, essais et marquage
Ta slovenski standard je istoveten z: EN 303-1:2017
ICS:
01.040.91 Gradbeni materiali in gradnja Construction materials and
(Slovarji) building (Vocabularies)
27.060.01 Gorilniki in grelniki vode na Burners and boilers in
splošno general
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 303-1
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2017
EUROPÄISCHE NORM
ICS 91.140.10 Supersedes EN 15034:2006, EN 303-1:1999
English Version
Heating boilers - Part 1: Heating boilers with forced
draught burners - Terminology, general requirements,
testing and marking
Chaudières de chauffage - Partie 1 : Chaudières avec Heizkessel - Teil 1: Heizkessel mit Gebläsebrennern -
brûleurs à air soufflé - Terminologie, prescriptions Begriffe, Allgemeine Anforderungen, Prüfung und
générales, essais et marquage Kennzeichnung
This European Standard was approved by CEN on 26 June 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 303-1:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions, units and symbols . 7
3.1 Terms and definitions . 7
3.2 Units and symbols . 10
3.2.1 Units . 10
3.2.2 Symbols . 11
4 Requirements . 11
4.1 Construction requirements . 11
4.1.1 General requirements . 11
4.1.2 Specific requirements . 23
4.2 Operational requirements . 25
4.2.1 General . 25
4.2.2 Verification of the nominal condensing output . 25
4.2.3 Formation of condensation . 25
4.2.4 Temperature of combustion products . 25
4.2.5 Surface temperature . 25
4.2.6 Water side resistance of the boiler . 26
4.2.7 Soundness of the boiler . 26
4.2.8 Temperature sensing control type TR and temperature sensing control type STB . 26
4.3 Electrical equipment . 26
4.3.1 Electrical safety . 26
4.3.2 Electromagnetic compatibility . 27
5 Tests . 27
5.1 General . 27
5.2 Boilers of steel or non-ferrous metal . 27
5.2.1 Tests to be carried out before production . 27
5.2.2 Factory production control (FPC) for steel boilers . 27
5.3 Boilers of cast iron or non-ferrous metals . 28
5.3.1 Test to be carried out before production . 28
5.3.2 Test during production . 28
5.4 Test for gas soundness . 29
5.5 Water side resistance measurement . 29
5.5.1 General . 29
5.5.2 Test rig for the establishment of the water side resistance . 29
5.6 Additional tests for low temperatures boilers . 31
5.6.1 Additional tests by using of corrosion resistant coatings . 31
5.6.2 Additional tests for oil-fired low temperatures boilers . 31
6 Marking . 31
6.1 Information on the boiler data plate . 31
6.2 Requirements of the data plate . 31
7 Technical documentation, scope of supply . 31
7.1 General . 31
7.2 Technical information (product fiche) and installation instructions . 31
7.3 Operating instructions . 33
7.4 Label . 33
Annex A (informative) Conformity evaluation . 34
Annex ZA (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EU) No [813/2013] aimed to be covered . 35
Annex ZB (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EU) No [811/2013] aimed to be covered . 36
Bibliography . 37

European foreword
This document (EN 303-1:2017) 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 March 2018, and conflicting national standards shall
be withdrawn at the latest by March 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 has been prepared under a mandate M/534 and M/535 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 and Annex ZB, which are integral parts
of this document.
This document supersedes EN 303-1:1999 and EN 15034:2006.
The following essential changes have been made:
a) Construction requirements were adopted from EN 15034;
b) Terminology of EU-Regulations 811/2013 and 813/2013 adopted;
c) the document was completely revised technically;
d) the document was completely revised editorially.
The following structure is intended for the European Standards for heating boilers:
— EN 303-1, Heating boilers — Part 1: Heating boilers with forced draught burners — Terminology,
general requirements, testing and marking
— EN 303-2, Heating boilers — Part 2: Heating boilers with forced draught burners — Special
requirements for boilers with atomizing oil burners
— EN 303-3, Heating boilers — Part 3: Gas fired central heating boilers — Assembly comprising a boiler
body and a forced draught burner
— EN 303-4, Heating boilers — Part 4: Heating boilers with forced draught burners — Special
requirements for boilers with forced draught oil burners with outputs up to 70 kW and a maximum
operating pressure of 3 bar — Terminology, special requirements, testing and marking
— EN 303-5, Heating boilers — Part 5: Heating boilers for solid fuels, hand and automatically fired, with
a nominal heat output of up to 300 kW — Terminology, requirements, testing and marking
— EN 304, Heating boilers — Test code for heating boilers for atomizing oil burners
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 boilers used for central heating (heating boilers) with forced
draught burners with a nominal heat output not exceeding 1 000 kW, which are operated either with
negative pressure (natural draught boilers) or with positive pressure (pressurized boiler) in the
combustion chamber, in accordance with the boiler instructions.
This European Standard specifies the necessary terminology, the requirements on the materials and
testing of them, and
...