Gas-fired central heating boilers - Part 2-2: Specific standard for type B1 appliances of a nominal heat input not exceeding 70 kW

EN 15502-2-2 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 and are hereafter referred to as “boilers”. Where the word boiler is used, this is to be read as the boiler including its connecting ducts, ducts and terminals, if any. This European Standard covers gas-fired central heating boilers type B11, B11BS, B12, B12BS, B13, B13BS 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 70 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 are declared in the technical instructions to be either a “low temperature boiler” or a “standard boiler”. If no declaration is given the boiler is to be considered a “standard boiler”; f) which are intended to be installed either indoors or in a partially protected place; g) which are either not intended to produce hot water, or are intended to produce hot water either by the instantaneous or storage principle, the whole being marketed as a single unit. h) which are designed for either sealed water systems or for open water systems. This European Standard is to be used in conjunction with the General Requirements Standard EN 15502-1. For applications within the scope of the PED further requirements may be necessary (e.g. situations where the maximum allowable temperature exceeds 110 °C, or where volume times maximum allowable pressure is over 50 bar x litres). This 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 shall 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 standard does not cover all the requirements for: i) 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 of EN 15502-2-1:2012); j) appliances using flue dampers; k) appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW; l) appliances of the types A, B14, B2, B3, B4, B5 and C; m) appliances intended to be connected to a (common) flue having mechanical extraction; n) appliances with gas/air ratio control; o) modular boilers; p) boilers which can give rise to condensation under certain circumstances; q) boilers intended to be installed in a room with a foreseeable negative pressure relative to the pressure in the flue system.

Heizkessel für gasförmige Brennstoffe - Teil 2-2: Heizkessel der Bauart B1 mit einer Nennwärmebelastung nicht größer als 70 kW

Diese Europäische Norm legt die Anforderungen und Prüfverfahren insbesondere für den Bau, die Sicherheit, die Gebrauchstauglichkeit und den Energieeinsatz sowie die Einteilung und Kennzeichnung von gasbefeuerten Zentralheizungskesseln fest, die mit atmosphärischen Brennern mit oder ohne Ventilator ausgerüstet sind und nachfolgend kurz „Kessel“ genannt werden.
Wenn das Wort Kessel benutzt wird, muss es als Kessel einschließlich seiner Verbindungsstücke, Rohr und Windschutzeinrichtung, falls vorhanden, gelesen werden.
Diese Europäische Norm schließt gasbefeuerte Zentralheizungskessel der Bauarten B11, B11BS, B12, B12BS, B13 und B13BS entsprechend der Einteilung in CEN/TR 1749:2009 ein,
a)   die eine Nennwärmebelastung (bezogen auf den unteren Heizwert) von nicht mehr als 70 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 wärmeleitenden Flüssigkeit unter normalen Betriebsbedingungen 105 °C nicht überschreitet,
d)   deren maximaler Betriebsdruck im Wasserkreislauf 6 bar nicht überschreitet,
e)   die vom Hersteller entweder als „Niedertemperaturkessel“ oder als „Standardkessel“ bezeichnet werden. Wenn keine Angabe gemacht wird, wird der Kessel als „Standardkessel“ betrachtet,
f)   die dafür vorgesehen sind, entweder in Gebäuden oder an einer teilweise geschützten Stelle aufgestellt zu werden,
g)   die dafür vorgesehen sind, nach dem Durchlaufprinzip oder nach dem Speicherprinzip Warmwasser herzustellen, wobei das Ganze als eine Einheit vertrieben wird,
h)   die entweder für geschlossene oder offene Wassersysteme ausgelegt sind.
Diese Europäische Norm ist in Verbindung mit der Norm EN 15502-1 für allgemeine Anforderungen anzuwenden.
Für Anwendungen innerhalb des Anwendungsbereiches der Druckgeräterichtlinie (DGRL, en: PED) können weitere Anforderungen erforderlich werden (z. B. Situationen, bei denen die höchstzulässige Temperatur 110 °C überschreitet, oder wenn der Wert Volumen mal höchstzulässiger Druck über 50 bar  Liter liegt).
Diese Norm enthält Anforderungen für Kessel mit bekannten Bauweisen. Bei Kesseln mit alternativen Bauweisen, die eventuell nicht vollständig durch diese Norm abgedeckt werden, muss 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, ist in Abschnitt 11 angegeben.
Diese Norm behandelt nicht alle Anforderungen für:
a)   Geräte, die dafür ausgelegt sind, an ein Gasnetz angeschlossen zu werden, bei dem die Qualität des verteilten Gases über die Lebensdauer des Gerätes wahrscheinlich stark schwankt (siehe EN 15502 2 1:2012, Anhang DD);
b)   Geräte, die Abgasklappen benutzen;
c)   Geräte, die eine Nennwärmebelastung (auf Basis des Heizwerts) nicht über 70 kW haben.
d)   Geräte der Bauarten A, B14, B2, B3, B4, B5 und C;
e)   Geräte, die an eine (gemeinsame) Abgasanlage mit mechanischer Abgasabführung anzuschließen sind;
f)   Geräte mit Brenngas/Luft-Regelung;
g)   Modulierende Brenner;
h)   Kessel, bei denen bei bestimmten Bedingungen es zur Kondensation führen kann;
i)   Kessel, die für die Innenaufstellung vorgesehen sind mit einem negativen Druck im Vergleich zum Druck im Abgassystem.
ANMERKUNG   Negativer Druck im Vergleich zum Druck im Abgassystem kann zum Beispiel durch mechanische oder thermische Lüftung in luftdichten Gebäuden hervorgerufen werden.

Chaudières de chauffage central utilisant les combustibles gazeux - Partie 2-2: Norme spécifique pour les appareils de type B1 dont le débit calorifique nominal est inférieur ou égal à 70 kW

La présente Norme européenne spécifie les exigences et les méthodes d’essai concernant les chaudières de chauffage central utilisant les combustibles gazeux et dotées de brûleurs atmosphériques ou de brûleurs atmosphériques assistés d’un ventilateur, ci-après dénommées « chaudières », en particulier leur conception, leur sécurité, leur aptitude à la fonction, leur utilisation rationnelle de l’énergie, ainsi que leur classification et leur marquage.
Lorsque le terme « chaudière » est employé, il sous-entend la chaudière ainsi que ses conduits de raccordement, conduits et terminaux, le cas échéant.
La présente Norme européenne couvre les chaudières de chauffage central utilisant les combustibles gazeux de types B11, B11BS, B12, B12BS, B13 et B13BS conformément à la classification du CEN/TR 1749:2009 :
a)   dont le débit calorifique nominal (basé sur le pouvoir calorifique inférieur) est inférieur ou égal à 70 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)   déclarées comme étant des « chaudières à basse température » ou des « chaudières standard » dans la notice d'installation. Si aucune déclaration n'est faite, la chaudière doit être considérée comme une « chaudière standard » ;
f)   destinées à être installées à l'intérieur ou à un emplacement partiellement protégé ;
g)   non destinées à produire de l'eau chaude, ou destinées à produire instantanément de l'eau chaude ou capables de la stocker, l'ensemble étant commercialisé sous forme monobloc ;
h)   conçues pour des circuits d'eau fermés ou ouverts.
La présente Norme européenne doit être utilisée conjointement avec les exigences générales de la norme EN 15502-1.
Pour les utilisations entrant dans le domaine d'application de la Directive 97/23/CE pour les équipements sous pression, des exigences supplémentaires peuvent être nécessaires (par exemple dans des situations où la température admissible maximale dépasse 110 °C, ou lorsque le produit volume par pression maximale admissible est supérieur à 50 bar x litre).
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 et couvrant les exigences essentielles de la Directive 2009/142/CE pour les appareils à gaz.
La présente norme ne couvre pas toutes les exigences concernant :
i)   les appareils destinés à être raccordés à des réseaux de distribution de gaz où la qualité du gaz distribué est susceptible de varier considérablement tout au long de la durée de vie de l'appareil (voir Annexe DD de l'EN 15502-2-1:2012) ;
j)   les appareils utilisant des registres de tirage ;
k)   les appareils de débit calorifique nominal (sur la base du pouvoir calorifique inférieur) supérieur à 70 kW ;
l)   les appareils de types A, B14, B2, B3, B4, B5 et C ;
m)   les appareils destinés à être raccordés à une cheminée (commune) à extraction mécanique ;
n)   les appareils munis d’un dispositif de contrôle du rapport air/gaz ;
o)   les appareils modulants ;
p)   les appareils pouvant donner lieu à condensation sous certaines conditions ;
q)   les appareils destinés à être raccordés à un système d’évacuation des produits de combustion conçu pour fonctionner sous pression ;

Plinski kotli za centralno gretje - 2-2. del: Posebne zahteve za tip kotlov B1 z imensko močjo do vključno 70 kW

Standard EN 15502-2-2 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, 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 B11, B11BS, B12, B12BS, B13 in B13BS v skladu s klasifikacijo v standardu CEN/TR 1749:2009: a) z nazivno močjo (glede na neto kurilno vrednost) do 70 kW; b) ki uporabljajo enega ali več gorljivih plinov iz treh družin plinov pri tlakih, navedenih v standardu EN 437; c) kadar temperatura tekočine za prenos toplote ne presega 105 °C med običajnim delovanjem; d) kadar najvišji obratovalni tlak v vodnem omrežju ne presega 6 barov; e) ki so v tehničnih navodilih deklarirani kot »nizkotemperaturni kotli« ali »standardni kotli«. Če ni navedene deklaracije, se kotel šteje za »standardni kotel«, f) ki je namenjen vgradnji v zaprt ali delno zaščiten prostor; g) ki ni namenjen ogrevanju vode ali je namenjen ogrevanju vode po takojšnjem principu ali principu shranjevanja, pri čemer se trži kot ena enota; h) izdelan za zaprte ali odprte vodne sisteme. Ta evropski standard je treba uporabljati v povezavi s splošnimi zahtevami standarda EN 15502-1. Za uporabe znotraj področja uporabe direktive o tlačni opremi so lahko potrebne dodatne zahteve (npr. v primerih, kadar najvišja dovoljena temperatura presega 110 °C ali kadar prostornina krat najvišji dovoljeni tlak presega 50 barov x litri). Ta standard določa 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 standard ne obravnava vseh zahtev za: i) naprave za povezavo s plinskimi omrežji, v katerih bo kakovost distribuiranega plina med življenjsko dobo naprave verjetno znatno nihala (glej dodatek DD standarda EN 15502-2-1:2012); j) naprave, ki uporabljajo dimniške lopute; k) naprave, ki imajo nazivno moč (glede na neto kurilno vrednost) večjo od 70 kW; l) naprave tipov A, B14, B2, B3, B4, B5 in C; m) naprave, ki so namenjene povezavi z (običajnim) dimnikom, ki ima mehansko ekstrakcijo; n) naprave z nadzorom razmerja med plinom/zrakom; o) modularne kotle; p) kotle, ki lahko pod določenimi pogoji povzročijo kondenzacijo; q) kotle, namenjene vgradnji v prostor s predvidljivim negativnim tlakom glede na tlak v dimniškem sistemu.

General Information

Status
Published
Public Enquiry End Date
19-Jan-2013
Publication Date
02-Sep-2014
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
14-Aug-2014
Due Date
19-Oct-2014
Completion Date
03-Sep-2014

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Heizkessel für gasförmige Brennstoffe - Teil 2-2: Heizkessel der Bauart B1 mit einer Nennwärmebelastung nicht größer als 70 kWGas-fired central heating boilers - Part 2-2: Specific standard for type B1 appliances of a nominal heat input not exceeding 70 kW97.100.20Plinski grelnikiGas heaters91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:EN 15502-2-2:2014SIST EN 15502-2-2:2014en,fr,de01-oktober-2014SIST EN 15502-2-2:2014SLOVENSKI

STANDARDSIST EN 297:1997/A6:2004SIST EN 297:1997/A5:1999SIST EN 677:1999SIST EN 625:1997SIST EN 297:1997/A4:2005SIST EN 297:1997/A2:1997SIST EN 297:1997SIST EN 297:1997/A3:1997SIST EN 297:1997/A2:1997/AC:20061DGRPHãþD

SIST EN 15502-2-2:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15502-2-2

July 2014 ICS 27.060.30; 91.140.10 Supersedes EN 15417:2006, EN 297:1994, EN 625:1995, EN 677:1998English Version

Gas-fired central heating boilers - Part 2-2: Specific standard for type B1 appliances

Chaudières de chauffage central utilisant les combustibles gazeux - Partie 2-2: Norme spécifique pour les appareils de type B1

Heizkessel für gasförmige Brennstoffe - Teil 2-2: Heizkessel der Bauart B1 This European Standard was approved by CEN on 28 May 2014.

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
CEN-CENELEC Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15502-2-2:2014 ESIST EN 15502-2-2:2014

EN 15502-2-2:2014 (E) 2 Contents Page Foreword ..............................................................................................................................................................5 Introduction .........................................................................................................................................................6 1 Scope ......................................................................................................................................................8 2 Normative references ............................................................................................................................9 3 Terms, definitions and symbols ...........................................................................................................9 3.1 Terms and definitions ...........................................................................................................................9 3.2 Symbols ............................................................................................................................................... 10 4 Classification ....................................................................................................................................... 10 5 Construction ........................................................................................................................................ 10 5.1 General ................................................................................................................................................. 10 5.2 Conversion to different gases ........................................................................................................... 10 5.3 Materials .............................................................................................................................................. 10 5.3.1 General ................................................................................................................................................. 10 5.3.2 Materials and thicknesses of walls or tubes with water side operating pressure for boilers of pressure class-3 ............................................................................................................................. 10 5.3.3 Domestic water connections ............................................................................................................. 10 5.3.4 Thermal insulation .............................................................................................................................. 11 5.4 Method of construction ...................................................................................................................... 11 5.4.1 Design .................................................................................................................................................. 11 5.4.2 Checking the state of operation ........................................................................................................ 11 5.4.3 Use and servicing ............................................................................................................................... 11 5.4.4 Connections to the gas and water pipes .......................................................................................... 11 5.4.5 Soundness ........................................................................................................................................... 11 5.4.6 Supply of combustion air and evacuation of the combustion products ...................................... 11 5.4.7 Dampers ............................................................................................................................................... 11 5.4.8 Air proving for type B12 and B13 boilers ............................................................................................ 11 5.4.9 Gas/air ratio controls for type B12 and B13 boilers ........................................................................... 11 5.4.10 Fan for type B12 and B13 boilers ......................................................................................................... 12 5.4.11 Drainage ............................................................................................................................................... 12 5.4.12 Operational safety in the event of failure of the auxiliary energy .................................................. 12 5.4.13 Special provision for Low Temperature Boilers and Condensing Boilers ................................... 12 5.5 Burners ................................................................................................................................................ 12 5.6 Pressure test points ........................................................................................................................... 12 5.7 Requirements for the application of control and safety devices ................................................... 12 5.7.101 Combustion products discharge safety device ............................................................................... 12 6 Electrical safety................................................................................................................................... 12 7 Controls ............................................................................................................................................... 13 7.101 Combustion Products Safety Discharge Device ............................................................................. 13 7.101.1 Construction requirements ................................................................................................................ 13 7.101.2 Performance ........................................................................................................................................ 13 8 Operational requirements .................................................................................................................. 14 8.1 General ................................................................................................................................................. 14 8.1.1 Characteristics of the reference and limit gases ............................................................................. 14 8.1.2 General test conditions ...................................................................................................................... 14 8.2 Soundness ........................................................................................................................................... 15 SIST EN 15502-2-2:2014

EN 15502-2-2:2014 (E) 3 8.2.1 Soundness of the gas circuit ............................................................................................................. 15 8.2.2 Soundness of the combustion circuit ............................................................................................... 15 8.2.3 Soundness of the water circuit .......................................................................................................... 16 8.2.4 Soundness of the domestic water circuit ......................................................................................... 16 8.3 Hydraulic resistance ........................................................................................................................... 16 8.4 Heat inputs and heat output ............................................................................................................... 16 8.5 Limiting temperatures ......................................................................................................................... 16 8.5.1 General ................................................................................................................................................. 16 8.5.2 Limiting temperatures of the adjusting, control and safety devices ............................................. 16 8.5.3 Limiting temperatures of the side walls, the front and the top....................................................... 16 8.5.4 Limiting temperatures of the test panels and the floor ................................................................... 16 8.6 Ignition, cross lighting, flame stability .............................................................................................. 17 8.6.1 General ................................................................................................................................................. 17 8.6.2 Limit conditions ................................................................................................................................... 17 8.6.3 Special conditions ............................................................................................................................... 17 8.6.4 Reduction of the gas rate of the ignition burner .............................................................................. 17 8.6.101 Resistance to draught for type B boilers .......................................................................................... 17 8.7 Reduction of the gas pressure ........................................................................................................... 18 8.8 Defective closure of the gas valve immediately upstream of the main burner............................. 18 8.9 Pre-purge .............................................................................................................................................. 18 8.9.101 General ................................................................................................................................................. 18 8.9.102 Verification of the protected nature of a combustion chamber ...................................................... 19 8.10 Functioning of a permanent ignition burner when the fan stops during the standby time ......... 20 8.11 Adjustment, control and safety devices ........................................................................................... 20 8.11.101 Air proving device for type B12 and B13 boilers ........................................................................ 20 8.11.102 Combustion products discharge safety device ........................................................................ 21 8.12 Carbon monoxide ................................................................................................................................ 22 8.12.101 Supplementary test for natural draught boilers ....................................................................... 23 8.13 NOx ........................................................................................................................................................ 23 8.14 Special provisions for boilers intended to be installed in a partially protected place ................. 23 8.14.101 Resistance to draught for boilers intended to be installed in a partially protected place ...................................................................................................................................................... 23 8.15 Formation of condensate.................................................................................................................... 24 8.16 Temperature of combustion products .............................................................................................. 24 8.101 Occurrence of the formation of condensate in the flue system ..................................................... 24 8.101.1 Potential condensation in the flue ..................................................................................................... 24 8.101.2 Non-condensation in the flue ............................................................................................................. 25 9 Useful efficiencies ............................................................................................................................... 25 9.1 General ................................................................................................................................................. 25 9.2 Useful efficiency at the nominal heat input ...................................................................................... 26 9.2.1 Requirements ....................................................................................................................................... 26 9.2.2 Tests ..................................................................................................................................................... 26 9.3 Useful efficiency at part load.............................................................................................................. 26 9.4 Losses of combination boilers .......................................................................................................... 26 10 Electric auxiliary energy ..................................................................................................................... 26 11 Risk assessment ................................................................................................................................. 26 12 Marking and instructions .................................................................................................................... 26 12.1 Boiler marking ..................................................................................................................................... 26 12.1.1 Data plate.............................................................................................................................................. 26 12.1.2 Supplementary markings.................................................................................................................... 26 12.1.3 Packaging ............................................................................................................................................. 26 12.1.4 Warnings on the boiler and the packaging ....................................................................................... 26 12.1.5 Other information ................................................................................................................................ 27 12.2 Instructions .......................................................................................................................................... 27 12.2.1 Technical instructions ........................................................................................................................ 27 SIST EN 15502-2-2:2014

EN 15502-2-2:2014 (E) 4 12.2.2 User’s instructions ............................................................................................................................. 28 12.2.3 Conversion instruction ...................................................................................................................... 28 12.3 Presentation ........................................................................................................................................ 28 12.4 Supplementary marking and instructions in the case of boilers to be installed in partially protected places ................................................................................................................................. 28 101 Figures ................................................................................................................................................. 29 102 Listing of tables and numbers ........................................................................................................... 35 103 Annexes ............................................................................................................................................... 35 Annex I (informative)

Compilation of the test conditions for the various gas families ........................... 37 Annex V (informative)

Standards replaced by this standard in combination with EN 15502-1 .............. 40 Annex 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) ......................................................................................... 42 Annex 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 kW – 400 kW ........................................................................... 45 Bibliography ..................................................................................................................................................... 46

SIST EN 15502-2-2:2014

EN 15502-2-2:2014 (E) 5 Foreword This document (EN 15502-2-2:2014) 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 January 2015 and conflicting national standards shall be withdrawn at the latest by July 2017. 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 will supersede EN 297:1994, EN 625:1995, EN 677:1998 and EN 15417:2006 three years after publication of this standard. 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. 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. The EN 15502 series of standards is composed of the following parts: a) EN 15502-1, Gas-fired heating boilers — Part 1: General requirements and tests; b) 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; c) EN 15502-2-2, Gas-fired central heating boilers — Part 2-2: Specific standard for type B1 appliances (the present document). NOTE This is intended to have no additional requirements in the parts 2 for the ERP. This is intended to include the requirements for this directive into the generic standard (EN 15502–1) covering all appliances. According to the CEN-CENELEC Internal Regulations, the national standards organizations 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 15502-2-2:2014

EN 15502-2-2:2014 (E) 6 Introduction A gas-fired heating boiler is an appliance using gaseous 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 instantaneous heat exchanger or 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 gases 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 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 technical instructions. Boilers may be designed to be connected to specific parts of a building. Especially connection to a chimney may be relevant. This European standard was established to deal with aspects related to: c)

safety; d)
rational use of energy; e)

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 Relation between this standard and EN 15502-1: This European Standard will 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 an addition. Clauses, subclauses and annexes which are additional to those in EN 15502-1:2012 are numbered starting from 101, respectively are designated as Annex AA, BB, CC, etc. SIST EN 15502-2-2:2014

EN 15502-2-2:2014 (E) 7 Annex V lists for which types existing standards are replaced by this standard in combination with EN 15502-1. SIST EN 15502-2-2:2014

EN 15502-2-2:2014 (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 and are hereafter referred to as “boilers”. Where the word boiler is used, this is to be read as the boiler including its connecting ducts, ducts and terminals, if any. This European Standard covers gas-fired central heating boilers type B11, B11BS, B12, B12BS, B13, B13BS 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 70 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 are declared in the technical instructions to be either a “low temperature boiler” or a “standard boiler”. If no declaration is given the boiler is to be considered a “standard boiler”; f) which are intended to be installed either indoors or in a partially protected place; g) which are either not intended to produce hot water, or are intended to produce hot water either by the instantaneous or storage principle, the whole being marketed as a single unit. h) which are designed for either sealed water systems or for open water systems. This European Standard is to be used in conjunction with the General Requirements Standard EN 15502-1. For applications within the scope of the PED further requirements may be necessary (e.g. situations where the maximum allowable temperature exceeds 110 °C, or where volume times maximum allowable pressure is over 50 bar x litres). This 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 shall 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 standard does not cover all the requirements for: i) 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 of EN 15502-2-1:2012); j) appliances using flue dampers; k) appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW; l) appliances of the types A, B14, B2, B3, B4, B5 and C; m) appliances intended to be connected to a (common) flue having mechanical extraction; SIST EN 15502-2-2:2014

EN 15502-2-2:2014 (E) 9 n) appliances with gas/air ratio control; o) modular boilers; p) boilers which can give rise to condensation under certain circumstances; q) boilers intended to be installed in a room with a foreseeable negative pressure relative to the pressure in the flue system. NOTE Negative pressure relative to the pressure in the flue system can for example be caused by mechanical or thermal ventilation in airtight buildings. 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. EN 437:2003+A1:2009, Test gases — Test pressures — Appliance categories EN 14459:2007, Control functions in electronic systems for gas burners and gas burning appliances — Methods for classification and assessment EN 15502-1:2012, Gas-fired heating boilers — Part 1: General requirements and tests EN 60730-2-9, Automatic electrical controls for household and similar use — Part 2-9: Particular requirements for temperature sensing controls (IEC 60730-2-9) 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. NOTE They are numbered in accordance with the specific groups they belong to. 3.1.3.101 draught diverter device, placed in the combustion products circuit of a boiler, that is intended to maintain the quality of combustion within certain limits and to keep the combustion stable under certain conditions of updraught and downdraught 3.1.4.101 combustion products discharge safety device device that at least causes safety shutdown of the main burner when there is an unacceptable spillage of combustion products at the draught diverter 3.1.12.101 minimum adjustable

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