Gas-fired central heating boilers - Part 2-1: Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW

This European Standard specifies, the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as "boilers".
Where the word boiler is used, it needs to be read as the boiler including its connecting ducts, ducts and terminals, if any.
This European Standard covers gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5, according to the classification in CEN/TR 1749:
a)   that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which may or may not give rise to condensation under certain circumstances;
f)   which are declared in the installation instructions to be either a "condensing" boiler or a "low temperature boiler" or a "standard boiler"; if no declaration is given the boiler is to be considered a "standard boiler";
g)   which are intended to be installed either indoors or outdoors in a partially protected place;
h)   which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit;
i)   which are designed for either sealed water systems or for open water systems;
j)   which are either modular boilers, or non- modular boilers.
This European Standard will be used in conjunction with the General Requirements Standard EN 15502-1.
This European Standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Directive, is given in Clause 11.
This European Standard does not cover all the requirements for:
k)   Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD);
l)   Appliances using flue dampers;
m)   Appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81;
n)   C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
o)   Appliances incorporating flexible plastic flue liners;
p)   Appliances designed to become connected to a combined flue duct system that is designed to operate under overpressure (for example Ca));
q)   Appliances incorporating a combined combustion products circuit that is designed to operate under overpressure (for example Cb));
r)   Appliances intended to be connected to a (common) flue having mechanical extraction.

Heizkessel für gasförmige Brennstoffe - Teil 2-1: Heizkessel der Bauart C und Heizkessel der Bauarten B2, B3 und B5 mit einer Nennwärmebelastung nicht größer als 1 000 kW

Diese Europäische Norm legt die allgemeinen Anforderungen und Prüfmethoden insbesondere für den Bau, die Sicherheit, die Gebrauchstauglichkeit und den Energieeinsatz sowie die Klassifizierung und Kenn-zeichnung von gasbefeuerten Heizkesseln fest, die mit atmosphärischen Brennern mit oder ohne Gebläse der mit Vormischbrenner ausgerüstet sind und nachfolgend kurz „Kessel“ genannt werden.
Wenn das Wort Kessel benutzt wird, soll es als Kessel einschließlich seiner Verbindungsstücke, Rohr und Windschutzeinrichtung, falls vorhanden, gelesen werden.
Diese Europäische Norm schließt gasgefeuerte Zentralheizungskessel der Bauarten C1 bis C9 und der Bauarten B2, B3 und B5 entsprechend der Einteilung in CEN/TR 1749:2009 ein:
a)   die eine Nennwärmebelastung (bezogen auf den Heizwert) von nicht mehr als 1 000 kW haben;
b)   die mit einem oder mehreren brennbaren Gasen der drei Gasfamilien mit den in EN 437 genannten Drücken betrieben werden;
c)   bei denen die Temperatur der Wärme leitenden Flüssigkeit unter normalen Betriebsbedingungen 105 °C nicht überschreitet;
d)   deren maximaler wasserseitiger Betriebsdruck 6 bar nicht überschreitet;
e)   bei denen sich unter bestimmten Bedingungen Kondenswasser bilden kann oder nicht bilden kann;
f)   die vom Hersteller als „Brennwertgeräte“, als „Niedertemperaturkessel“ oder als „Standardkessel“ bezeichnet werden. Wenn keine Angabe gemacht wird, wird der Kessel als Standardkessel betrachtet;
g)   die dafür vorgesehen sind entweder im Innenraum oder im Außenbereich an einer teilweise geschützten Stelle aufgestellt zu werden;
h)   die dafür vorgesehen sind, nach dem Durchlaufprinzip oder nach dem Speicherprinzip Warmwasser herzustellen, wobei das Ganze als eine Einheit vertrieben wird;
i)   die entweder für geschlossene oder offene Wassersysteme ausgelegt sind;
j)   die entweder modulierende oder nicht modulierende Kessel sind.
Diese europäische Norm beschreibt die Anforderungen für Kessel mit bekannter Bauweise. Für Kessel mit alternativer Bauweise, die eventuell nicht vollständig durch diese oder eine spezielle Norm abgedeckt werden, soll das Risiko, das mit dieser alternativen Bauweise verbunden ist, abgeschätzt werden.
Ein Beispiel für eine Bewertungsmethode, die auf Risikoanalyse beruht und die wesentlichen Anforderungen der Gasgeräterichtlinie abdeckt, wird in Abschnitt 11 beschrieben.
Diese europäische Norm behandelt nicht alle Anforderungen für:
k)   Geräte die dafür ausgelegt sind an ein Gasnetz angeschlossen zu werden wo die Qualität des verteilten Gases  über die Lebensdauer des Gerätes wahrscheinlich stark schwankt (siehe Anhang DD);
l)   Geräte, die Abgasklappen nutzen;
m)   Geräte der Arten B21, B31, B51, C21, C41, C51, C61, C71 und C81;
n)   C7 Geräte, die eine Nennwärmebelastung (auf Basis des Heizwertes) von 70 kW überschreiten;
o)   Geräte, die flexible Kunststoffabzüge beinhalten;
p)   Geräte, die dafür ausgelegt sind an ein gemeinsames Abgasrohrsystem angeschlossen zu werden, das bei Überdruck arbeiten soll (beispielsweise Ca);
q)   Geräte, die dafür ausgelegt sind an einen gemeinsamen Abgaskreislauf angeschlossen zu werden, das bei Überdruck arbeiten soll (beispielsweise Cb);
r)   Geräte, die für den Anschluss an eine (gemeinsame) mechanische Abführung der Abgase vorgesehen sind.

Chaudières de chauffage central utilisant les combustibles gazeux - Partie 2-1 : Norme spécifique pour les appareils de type C et les appareils de types B2, B3 et B5 dont le débit calorifique nominal est inférieur ou égal à 1 000 kW

La présente Norme européenne spécifie les exigences et les méthodes d’essai communes, en particulier la conception, la sécurité, l’aptitude à la fonction, l’utilisation rationnelle de l’énergie, ainsi que la classification et le marquage concernant les chaudières de chauffage central utilisant les combustibles gazeux et dotées de brûleurs atmosphériques, de brûleurs atmosphériques assistés d’un ventilateur ou de brûleurs à pré-mélange total, ci-après dénommées « chaudières ».
Lorsque le mot « chaudière » est employé, il doit être interprété comme désignant la chaudière et ses conduits de raccordement, conduits et terminaux éventuels.
La présente Norme européenne s’applique aux chaudières de types C1 et C9, et des types B2, B3 et B5, conformément au CEN/TR 1749 : 2009 :
a)   de débit calorifique nominal (sur la base du pouvoir calorifique inférieur) inférieur à 1000 kW ;
b)   utilisant un ou plusieurs combustibles gazeux appartenant aux trois familles de gaz et aux pressions indiquées dans l'EN 437 ;
c)   dont la température du fluide caloporteur ne dépasse pas 105 °C en fonctionnement normal ;
d)   dont la pression maximale de service dans le circuit d’eau ne dépasse pas 6 bar ;
e)   pouvant condenser dans certaines circonstances ;
f)   déclarées comme étant « chaudière à condensation » ou « chaudière à basse température » ou « chaudière standard » par le fabricant ; en l’absence d’information la chaudière est considérée comme « chaudière standard » ;
g)   destinées à être installées à un emplacement partiellement protégé ;
h)   destinées à produire instantanément de l'eau chaude ou capables de la stocker, l'ensemble étant commercialisé sous forme monobloc ;
i)   conçues pour un système avec circuit d’eau fermé ou ouvert ;
j)   modulaires ou non.
La présente norme fournit des exigences pour les chaudières dont la construction est connue. Pour les chaudières de construction différente susceptibles de ne pas être couvertes par la présente norme, le risque associé à cette construction différente doit être évalué.
L’Article 11 donne un exemple de méthodologie d’évaluation basée sur l’évaluation des risques qui couvre les exigences essentielles de la Directive Appareils à Gaz.
La présente Norme européenne ne s’applique pas :
k)   aux appareils destinés à être raccordés au réseau de gaz lorsque la qualité du gaz distribué peut varier de façon importante pendant la durée de vie de l’appareil (voir l’Annexe DD) ;
l)   aux appareils munis d’un registre ;
m)   aux appareils des types B21, B31, B51, C21, C41, C51, C61, C71 et C81 ;
n)   aux appareils de type C7 de débit calorifique nominal (basé sur le pouvoir calorifique inférieur) inférieur à 70 kW ;
o)   aux appareils comprenant un conduit flexible en plastique ;
p)   aux appareils destinés à être raccordés à un système d’évacuation des produits de combustion conçu pour fonctionner sous pression (par exemple Ca) ;
q)   aux appareils comprenant un circuit des produits de combustion conçu pour fonctionner sous pression (par exemple Cb) ;
r)   aux appareils destinés à être raccordés à un conduit (collectif) munis d’un dispositif d’extraction.

Plinski kotli za centralno gretje - 2-1. del: Poseben standard za tip kotlov C in tipe kotlov B2, B3 in B5 z imensko močjo do vključno 1000 kW

Ta evropski standard določa zahteve in preskusne metode, zlasti v zvezi s konstrukcijo, varnostjo, ustreznostjo namenu in racionalno porabo energije ter s klasifikacijo in označevanjem plinskih kotlov za centralno gretje z nameščenimi atmosferskimi gorilniki, atmosferskimi gorilniki z ventilatorjem ali gorilniki s popolnim vnaprejšnjim mešanjem, v nadaljevanju: »kotli«. Kjer je uporabljena beseda kotel, to pomeni kotel skupaj s povezovalnimi vodi, vodi in terminali, če so prisotni. Ta evropski standard zajema plinske kotle za centralno gretje tipov C1 do C9 in tipov B2, B3 in B5 v skladu s klasifikacijo v CEN/TR 1749:2009: a) z imensko močjo (glede na neto kurilno vrednost) do vključno 1000 kW; b) ki uporabljajo enega ali več vnetljivih plinov iz treh družin plinov pri tlakih, navedenih v standardu EN 437; c) pri katerih temperatura tekočine za prenos toplote pri običajnem delovanju ne presega 105 °C; d) pri katerih največji obratovalni tlak v vodnem omrežju ne presega 6 barov; e) ki lahko pod določenimi pogoji povzročijo kondenzacijo; f) ki so v navodilih za namestitev deklarirani kot »kondenzacijski kotli« ali »nizkotemperaturni kotli« ali »standardni kotli«; če ni navedene deklaracije, se kotel šteje kot »standardni kotel«; g) namenjene notranji vgradnji ali zunanji vgradnji v delno zaščitenih prostorih; h) ki lahko vključujejo tudi funkcijo ogrevanja vode po takojšnjem principu ali po principu shranjevanja, pri čemer se trži kot ena enota; i) izdelane za zaprte vodne sisteme ali odprte vodne sisteme; j) ki so lahko modularni kotli ali ne nemodularni kotli. Ta evropski standard podaja zahteve za kotle z znanimi konstrukcijami. V zvezi s kotli z drugačnimi konstrukcijami, ki morda niso v celoti zajeti v tem standardu, je treba oceniti tveganje, povezano z drugačno konstrukcijo. Primer metodologije ocenjevanja, ki temelji na oceni tveganja in zajema osnovne zahteve direktive o plinskih napravah, je podan v točki 11. Ta evropski standard ne obravnava vseh zahtev za: k) naprave za povezavo s plinskimi omrežji, v katerih bo kakovost distribuiranega plina med življenjsko dobo naprave verjetno znatno nihala (glej dodatek DD); l) naprave, ki uporabljajo dimniške lopute; m) naprave tipov B21, B31, B51, C21, C41, C51, C61, C71 in C81; n) naprave C7, ki imajo imensko moč (glede na neto kurilno vrednost) večjo od 70 kW; o) naprave z gibljivimi plastičnimi izpušnimi tuljavami; p) naprave, namenjene povezavi s sistemom kombiniranih izpušnih vodov za delovanje pod nadpritiskom (na primer Ca)); q) naprave, ki imajo sistem kombiniranega odvoda izpušnega voda, ki deluje pod nadpritiskom (na primer Cb)); r) naprave, ki so namenjene povezavi z (običajnim) dimnikom, ki ima mehansko ekstrakcijo.

General Information

Status
Withdrawn
Publication Date
23-Oct-2012
Withdrawal Date
13-Dec-2016
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
14-Dec-2016

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Heizkessel für gasförmige Brennstoffe - Teil 2-1: Heizkessel der Bauart C und Heizkessel der Bauarten B2, B3 und B5 mit einer Nennwärmebelastung nicht größer als 1 000 kWChaudières de chauffage utilisant les combustibles gazeux - Partie 2-1: Norme spécifique pour les appareils de type C et les appareils de types B2, B3 et B5 dont le débit calorifique nominal est inférieur ou égal à 1 000 kWGas-fired central heating boilers - Part 2-1: Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW97.100.20Plinski grelnikiGas heaters91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:EN 15502-2-1:2012SIST EN 15502-2-1:2013en,fr,de01-januar-2013SIST EN 15502-2-1:2013SLOVENSKI

STANDARDSIST EN 483:2001/A2:2002/AC:2006SIST EN 483:2001/A4:2008SIST EN 483:2001/A2:2002SIST EN 15420:2011SIST EN 483:20011DGRPHãþD

SIST EN 15502-2-1:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15502-2-1

October 2012 ICS 27.060.30; 91.140.10 Supersedes EN 15420:2010, EN 483:1999English Version

Gas-fired central heating boilers - Part 2-1: Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW

Chaudières de chauffage utilisant les combustibles gazeux - Partie 2-1: Norme spécifique pour les appareils de type C et les appareils de types B2, B3 et B5 dont le débit calorifique nominal est inférieur ou égal à 1 000 kW

Heizkessel für gasförmige Brennstoffe - Teil 2-1: Heizkessel der Bauart C und Heizkessel der Bauarten B2, B3 und B5 mit einer Nennwärmebelastung nicht größer als 1 000 kW This European Standard was approved by CEN on 18 August 2012.

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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15502-2-1:2012: ESIST EN 15502-2-1:2013

EN 15502-2-1:2012 (E) 2 Contents Page Foreword ................................................................................................................................................. 4Introduction ............................................................................................................................................. 61Scope .......................................................................................................................................... 82Normative references ................................................................................................................ 93Terms, definitions and symbols ............................................................................................103.1Terms and definitions .............................................................................................................103.2Symbols ....................................................................................................................................124Classification ...........................................................................................................................125Construction ............................................................................................................................125.1General .....................................................................................................................................125.2Conversion to different gases ................................................................................................125.3Materials ...................................................................................................................................125.4Method of construction...........................................................................................................145.5Burners .....................................................................................................................................185.6Pressure test points ................................................................................................................185.7Requirements for the application of control and safety devices .......................................185.101Additional requirements for modular boilers .......................................................................206Electrical safety .......................................................................................................................207Controls ....................................................................................................................................208Operational requirements .......................................................................................................208.1General .....................................................................................................................................208.2Soundness ...............................................................................................................................228.3Hydraulic resistance ...............................................................................................................268.4Heat inputs and heat output ...................................................................................................268.5Limiting temperatures .............................................................................................................268.6Ignition, cross lighting, flame stability ..................................................................................278.7Reduction of the gas pressure ...............................................................................................318.8Defective closure of the gas valve immediately upstream of the main burner ................318.9Pre-purge ..................................................................................................................................318.10Functioning of a permanent ignition burner when the fan stops during the standby time348.11Adjustment, control and safety devices ...............................................................................348.12Carbon monoxide ....................................................................................................................388.13NOx ............................................................................................................................................408.14Special provisions for boilers intended to be installed in a partially protected place .....418.15Formation of condensate .......................................................................................................418.16Temperature of combustion products ..................................................................................418.101Mechanical resistance and stability of ducts, terminal and fitting pieces ........................428.102Requirements for plastic in the combustion product evacuation ducts, terminals and fitting pieces for boilers ..........................................................................................................448.103Requirements for elastomeric seals and elastomeric sealants in the combustion product evacuation ducts, terminals and fitting pieces ......................................................509Useful efficiencies ...................................................................................................................5410Electric auxiliary energy .........................................................................................................5511Risk assessment .....................................................................................................................5512Marking and instructions ........................................................................................................5512.1Boiler marking .........................................................................................................................5512.2Instructions ..............................................................................................................................55SIST EN 15502-2-1:2013

EN 15502-2-1:2012 (E) 3 12.3Presentation .............................................................................................................................5812.4Supplementary marking and instructions in the case of boilers to be installed in partially protected places .......................................................................................................58101Figures ......................................................................................................................................58102Listing of tables and numbers ...............................................................................................70103Annexes ....................................................................................................................................71Annex AA (informative)

Standards replaced by this standard in combination with part 1 ...........72Annex BB (normative)

Test apparatus for type C2 boilers ...............................................................74Annex CC (normative)

Test methods to determine the effects of long-term thermal load, long-term condensate exposure, condensing/ non- condensing cycling and resistance to UV radiation ...................................................................................................................................75Annex DD (informative)

Variations in gas quality ..............................................................................76DD.1 Introduction ..............................................................................................................................76DD.2 Considerations if boilers are intend to be used with larger variations in the gas quality77DD.2.1Specification of the acceptable variations............................................................................77DD.2.2Impact of the claimed range around a set value for the normal distributed gases ..........78DD.2.3Impact of the declared values ................................................................................................79DD.2.4Relation between the RG, the DLG and the ELG ..................................................................79DD.2.5Self adapting appliances ........................................................................................................80Annex ZA (informative)

Clauses of this European Standard addressing essential requirements or provisions of EU Directive 2009/142/EC,

"Directive relating to appliances burning gaseous fuels (codified version)" (GAD) ..............................................................................81Annex ZB (informative)

Clauses of this European Standard addressing the methods for the verification of the efficiency of the EU Directive 92/42/EEC, relating to the efficiency of new hot boilers with an output of 4 – 400 kW.......................................................................84Bibliography ..........................................................................................................................................85 SIST EN 15502-2-1:2013

EN 15502-2-1:2012 (E) 4 Foreword This document (EN 15502-2-1:2012) has been prepared by Technical Committee CEN/TC 109 “Central heating boilers using gaseous fuels”, the secretariat of which is held by NEN. 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 April 2013, and conflicting national standards shall be withdrawn at the latest by October 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 483:1999 and EN 15420:2010. This document has been prepared under mandates M89/6 and M/066, 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 integral parts of this document. It supports essential requirements as meant in article 3 of EU Directive 2009/142/EC, relating to appliances burning gaseous fuels and the verification methods valid for production and measurements, as meant in article 5.2 of EU Directive 92/42/EEC, relating to the efficiency requirements for new hot water boilers fired with liquid or gaseous fuels, with an output of 4 - 400 kW. Changes in this standard: Many minor changes are introduced due to the harmonisation between the various standards. This includes the definitions that are used. Some definitions are modified as some standards mentioned the same words with a different meaning. The user is advised to compare the text he is used to (including the definitions) with the current version.

Most aspects were already introduced for some boiler types, but are now valid for a larger group of boilers. a) Examples of modifications due to harmonisation: 1) Requirements for materials used for the flue function (8.101, 8.102, 8,103); 2) The soundness of the combustion circuit (8.2.2); b) New or generally reworded requirements: 1) Air proving (5.4.8, 5.4.9, 8.11.101); 2) Adjustment of gas air ration controllers (8.11.101); 3) Risk assessment (11); 4) Auxiliary energy use (10); SIST EN 15502-2-1:2013

EN 15502-2-1:2012 (E) 5 5) Variation in gas quality (Annex CC); 6) The water trap requirements for condensing boilers (5.4.13); 7)

Requirements for boiler cascades (8.101). EN 15502 is composed of the following parts:  EN 15502-1, Gas-fired heating boilers — Part 1: General requirements and tests;  EN 15502-2-1, Gas-fired central heating boilers — Part 2-1: Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW (the present document);

 prEN 15502-2-2, Gas-fired central heating boilers — Part 2-2: Specific standard for type B1 appliances of a nominal heat input not exceeding 70 kW. 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 15502-2-1:2013

EN 15502-2-1:2012 (E) 6 Introduction A gas-fired heating boiler is an appliance using gas as fuel designed to heat water with the purpose of providing heat to a building (or portion of a building) from one point to multiple rooms using heat emitters such as radiators and convectors to transmit the heat from the water to the room. The boiler may also be used to provide domestic hot water via an indirect hot water storage tank. The basic function of gas-fired heating boiler is to generate heat by direct heat transfer in a heat exchanger, from the combustion gasses to the water. The boiler may include in one design more than one function. It may include for example: a) a sanitary hot water function; b) a function to supply the combustion air from the outside of the building; c) a function to dispose the combustion products to the outside of the building. The boiler design may be supplied to the market in more than one part. If the boiler is supplied to the market in multiple parts, the boiler is the assembly of various parts according to the installation instructions. Boilers may be designed to be connected to specific parts of a building. Especially, connection to a chimney and the means of combustion air supply are relevant. This European Standard was established to deal with aspects related to: d) safety; e) rational use of energy; f) fitness for purpose.

Matters related to quality assurance systems, tests during production, and certificates of conformity of auxiliary devices are not dealt with in this series of European Standards. Relationship between this document and EN 15502-1, Gas-fired heating boilers  Part 1: General requirements and tests: This European Standard is to be used in conjunction with EN 15502-1:2012 and follows the numbering structure of EN 15502-1:2012. This European Standard refers to clauses of EN 15502-1:2012 or adapts clauses by stating in the corresponding clause:  shall be according to EN 15502-1:2012, (clause number) with the following modification  shall be according to EN 15502-1:2012, (clause number) with the following addition  EN 15502-1:2012, (clause number) is replaced by the following;  EN 15502-1:2012, (clause number) is not applicable. This European Standard adds clauses or subclauses to the structure of EN 15502-1:2012 which are particular to this standard. It should be noted that these clauses and subclauses are not indicated as SIST EN 15502-2-1:2013

EN 15502-2-1:2012 (E) 7 an addition. Clauses, subclauses and annexes which are additional to those in

EN 15502-1:2012 are numbered starting from 101, or designated as Annex AA, BB, CC, etc. Annex AA lists those existing standards which are replaced by this standard in combination with EN 15502-1. After the DOW (3 years after publication of both EN 15502-1 and EN 15502-2-1 in the OJEU) the standards specified in Annex AA, for the appliance types covered in EN 15502-2-1, are withdrawn. Annex AA lists those existing appliance types for which CEN/TC109 standards are intended to be replaced by EN 15502-2-2. The standards listed in Annex AA are to be used until EN 15502-2-2 specifies that the standards are withdrawn for the appliance types indicated.

SIST EN 15502-2-1:2013

EN 15502-2-1:2012 (E) 8 1 Scope This European Standard specifies, the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”. Where the word boiler is used, it needs to be read as the boiler including its connecting ducts, ducts and terminals, if any. This European Standard covers gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5, according to the classification in CEN/TR 1749:2009: a) that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW; b) that use one or more combustible gases of the three gas families at the pressures stated in EN 437; c) where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation; d) where the maximum operating pressure in the water circuit does not exceed 6 bar; e) which may or may not give rise to condensation under certain circumstances; f) which are declared in the installation instructions to be either a “condensing” boiler or a "low temperature boiler" or a “standard boiler”; if no declaration is given the boiler is to be considered a “standard boiler”; g) which are intended to be installed either indoors or outdoors in a partially protected place; h) which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit; i) which are designed for either sealed water systems or for open water systems; j) which are either modular boilers, or non- modular boilers. This European Standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed. An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Directive, is given in Clause 11. This European Standard does not cover all the requirements for: k) Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD); l) Appliances using flue dampers;

m) Appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81; n) C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW; o) Appliances incorporating flexible plastic flue liners; p) Appliances designed to become connected to a combined flue duct system that is designed to operate under overpressure (for example Ca)); SIST EN 15502-2-1:2013

EN 15502-2-1:2012 (E) 9 q) Appliances incorporating a combined combustion products circuit that is designed to operate under overpressure (for example Cb)); r) Appliances intended to be connected to a (common) flue having mechanical extraction.2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. In this standard the normative references of Part 1 are valid. Furthermore the following normative references are valid. EN 437:2003+A1:2009, Test gases  Test pressures  Appliance categories EN 513:1999, Unplasticized polyvinylchloride (PVC-U) profiles for the fabrication of windows and doors  Determination of the resistance to artificial weathering EN 573-1:2004, Aluminium and aluminium alloys  Chemical composition and form of wrought products  Part 1: Numerical designation system CEN/TR 1749:2009, European scheme for the classification of gas appliances according to the method of evacuation of the combustion products (types) EN 1856-1:2009, Chimneys

Requirements for metal chimneys
Part 1: System chimney products EN 1856-2:2009, Chimneys
Requirements for metal chimneys

Part 2: Metal flue liners and connecting flue pipes EN 10088-1:2005, Stainless steels  Part 1: List of stainless steels EN 13216-1:2004, Chimneys

Test methods for system chimneys

Part 1: General test methods EN 13501-1:2007, Fire classification of construction products and building elements

Part 1: Classification using data from reaction to fire tests EN 14241-1:2005, Chimneys

Elastomeric seals and elastomeric sealants

Material requirements and test methods  Part 1: Seals in flue liners EN 14471:2005, Chimneys

System chimneys with plastic flue liners

Requirements and test methods EN 15502-1:2012, Gas-fired heating boilers  Part 1: General requirements and tests EN ISO 178:2010, Plastics

Determination of flexural properties (ISO 178:2010) EN ISO 179-1:2010, Plastics
Determination of Charpy impact properties

Part 1: Non-instrumented impact test (ISO 179-1:2010) EN ISO 527-1:1996, Plastics

Determination of tensile properties

Part 1: General principles (ISO 527-1:1993 including Corr 1:1994) EN ISO 527-2:1996, Plastics

Determination of tensile properties

Part 2: Test conditions for moulding and extrusion plastics (ISO 527-2:1993 including Corr 1:1994) EN ISO 1183-1:2004, Plastics  Methods for determining the density of non-cellular plastics  Part 1: Immersion method, liquid pyknometer method and titration method (ISO 1183-1:2004) SIST EN 15502-2-1:2013

EN 15502-2-1:2012 (E) 10 EN ISO 1183-2:2004, Plastics  Methods for determining the density of non-cellular plastics  Part 2: Density gradient column method (ISO 1183-2:2004) EN ISO 1183-3:1999, Plastics  Methods for determining the density of non-cellular plastics  Part 3: Gas pyknometer method (ISO 1183-3:1999) EN ISO 9969:2007, Thermoplastics pipes

Determination of ring stiffness (ISO 9969:2007) ISO 37:2005, Rubber, vulcanized or thermoplastic

Determination of tensile stress-strain properties ISO 188:2011, Rubber, vulcanized or thermoplastic

Accelerated ageing and heat resistance tests ISO 815-1:2008, Rubber, vulcanized or thermoplastic

Determination of compression set  Part 1: At ambient or elevated temperatures ISO 815-2:2008, Rubber, vulcanized or thermoplastic

Determination of compression set  Part 2: At low temperatures ISO 1817:2011, Rubber, vulcanized or thermoplastic

Determination of the effect of liquids ISO 2781:20081), Rubber, vulcanized or thermoplastic

Determination of density ISO 6914:2008, Rubber, vulcanized or thermoplastic

Determination of ageing characteristics by measurement of stress relaxation in tension ISO 7619-1:2010, Rubber, vulcanized or thermoplastic

Determination of indentation hardness  Part 1: Durometer method (Shore hardness) ISO 7619-2:2010, Rubber, vulcanized or thermoplastic

Determination of indentation hardness  Part 2: IRHD pocket meter method 3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in EN 15502-1:2012, EN 437:2003+A1:2009 and the following apply. They are numbered in accordance with the specific groups they belong to.

3.1.3.101 ducts support accessory used to fix, or transfer the load of, air supply and combustion products evacuation ducts to structural elements (building, etc.) 3.1.3.102 overheat combustion products temperature maximum temperature of the combustion products in case of overheat, at the exit of the boiler where it is intended to be connected to a duct, flue or chimney 3.1.3.103 nominal working combustion products temperature maximum temperature of the combustion products in case of normal functioning, at the exit of the boiler where it is intended to be connected to a duct, flue or chimney

1) This document is impacted by the following amendment: ISO 2781:2008/Amd 1:2010, Precision data. SIST EN 15502-2-1:2013

EN 15502-2-1:2012 (E) 11 Note 1 to entry: Normal functioning is considered to reflect the situation of running the boiler at inlet/outlet temperatures of 70/90 °C, or just at the point that the control thermostat is switching. 3.1.3.104 condensing operation mode of flue system operation mode where, under normal operation conditions, condensate is produced in the combustion products circuit 3.1.3.105 terminal part of the combustion circuit fitted external to the building which has the function of the air supply inlet and/or combustion products outlet of the appliance

3.1.3.106 fitting piece device which allows the fitting of: a) the air supply and combustion products evacuation ducts to a single shared duct for type C2 boilers; b) the air supply and combustion products evacuation ducts to two ducts of a shared duct system for type C4 boilers; c) type C6 boilers to a system for air supply and combustion products evacuation that is approved and marketed independently from the boiler; d) the combustion products evacuation duct to a chimney that is part of the building for type C8 boilers; e) the air supply duct to a chimney that is part of the building for type C9 boilers; f) type B2 boilers to a system for combustion products evacuation that is approved and marketed independently from the boiler; g) the combustion products evacuation duct to a shared duct system for type B3 boilers 3.1.3.107 terminal guard device that protects the terminal from mechanical damage from outside influences 3.1.3.108 secondary flue part of the flue of a type C7 boiler between the draught diverter/air inlet in the roof space loft and the combustion products outlet above the roof 3.1.3.109 roof space loft ventilated part of a building between the uppermost inhabitable space of the building and the roof 3.1.3.110 modular boiler boiler consisting of an assembly of two or more generally identical modules, each of which consists of a heat exchanger, burner, control and safety devices Note 1 to entry: The assembly has a single flue outlet and a common gas connection, common electricity supply connection and common flow and return water temperature connections. Each module is capable of independent operation. SIST EN 15502-2-1:2013

EN 15502-2-1:2012 (E) 12 3.1.3.111 combustion chamber enclosure inside which combustion of the air-gas mixture takes place 3.1.3.112 completely surrounded combustion circuit combustion circuit where the air supply circuit completely surrounds the combustion gas carrying part of the combustion circuit 3.1.3.113 separate combustion and air supply circuits combustion circuit where the air supply circuit does not completely surroun

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