Gas fired central heating boilers - Type B boilers of nominal heat input exceeding 300 kW, but 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”.
This European Standard applies to boilers of type B, as listed in 4.2:
3   that use one or more combustible gases of the three gas families at the pressures stated in Tables 16 and 17;
3   that have a nominal heat input (on the basis of net calorific value) exceeding 300 kW, but not exceeding 1  000 kW, including modular boilers;
3   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
3   where the maximum operating pressure in the water circuit does not exceed 6 bar;
3   that can give rise to condensation under certain circumstances;
3   of the standard and low-temperature types.
This European Standard applies to boilers designed for sealed water systems or for open water systems.
This European Standard does not contain all the requirements necessary for boilers:
3   intended to be installed in the open or in living rooms;
3   permanently fitted with more than one flue outlet;
3   where the combustion circuit is sealed with respect to the room where the boiler is installed;
3   of the condensing type;
3   intended to be connected to a common flue having mechanical extraction;
3   fitted with a forced draught burner in accordance with EN 676 (see EN 303-7);
3   producing hot water for domestic purposes.
This standard only covers type testing.
Matters related to quality assurance systems, tests during production, and certificates of conformity of auxiliary devices are not dealt with in this European Standard.

Heizkessel für gasförmige Brennstoffe - Heizkessel des Typs B mit einer Nennwärmebelastung größer als 300 kW aber gleich oder kleiner als 1 000 kW

Diese Norm behandelt die Anforderungen und die Prüfmethoden im Hinblick auf die Konstruktion, die Sicherheit, die Gebrauchstauglichkeit und den wirtschaftlichen Einsatz von Energie sowie die Klassifizierung und die Kennzeichnung von gasbeheizten Zentralheizungskesseln mit atmosphärischen Brennern, mit gebläseunterstützten atmosphärischen Brennern oder mit voll vorgemischten Brennern, die im weiteren Verlauf als "Kessel" bezeichnet werden.
Diese Norm behandelt, wie in 4.2 aufgelistet, Kessel der Bauart B:
-   die ein oder mehrere Brenngase der drei Gasfamilien bei den in den Tabellen 16 und 17 angegebenen Drücken verwenden;
-   die Nennwärmebelastung (bezogen auf den Heizwert) über 300 kW, aber nicht über 1 000 kW (einschließlich der Kombikessel) haben;
-   bei denen die Temperatur der Wärme übertragenden Flüssigkeit beim üblichen Betrieb 105 °C nicht überschreitet;
-   bei denen der höchste Betriebsdruck im Wasserkreislauf 6 bar nicht überschreitet;
-   bei denen unter bestimmten Umständen Kondensation eintreten kann
-   und der üblichen Bauart und der  Bauart Niedertemperaturkessel.
Diese europäische Norm gilt sowohl für Kessel mit geschlossenem als auch mit offenem Wasserkreislauf
Diese europäische Norm enthält nicht alle für Kessel erforderlichen Anforderungen:
-   die im Freien oder in Wohnräumen aufgestellt werden;
-   die dauerhaft mit mehr als einem Abgasstutzen ausgerüstet sind;
-   bei denen der Verbrennungskreis in Hinblick auf den Aufstellungsraum des Kessels abgedichtet ist;
-   der Bauart "Brennwertkessel";
-   die an eine gemeinsame Abgasanlage mit mechanischer Abgasabführung anzuschließen sind;
-   die in Übereinstimmung mit EN 676 (siehe prEN 303-7) mit einem Gebläsebrenner ausgerüstet sind;
-   die Warmwasser für den sanitären Bedarf erzeugen.
Diese Norm gilt nur für Typprüfungen.

Chaudieres de chauffage central utilisant les combustibles gazeux - Chaudieres de type B dont le débit calorifique nominal est supérieur a 300 kW mais inférieur ou égal a 1 000 kW

La présente Norme européenne prescrit les spécifications et les techniques d’essais relatives a la construction, la sécurité, l’aptitude a la fonction et l’utilisation rationnelle de l’énergie ainsi que la classification et le marquage des chaudieres de chauffage central équipées de bruleurs atmosphériques avec ou sans ventilateur ou de bruleurs a pré-mélange total utilisant les combustibles gazeux, appelées ci-apres « chaudieres ».
La présente Norme européenne s’applique aux chaudieres de Type B comme indiqué en 4.2 :
-   utilisant un ou plusieurs des gaz correspondant aux trois familles de gaz et aux pressions indiquées dans les Tableaux 16 et 17 ;
-   de débit calorifique nominal (sur le pouvoir calorifique inférieur) supérieur a 300 kW, mais inférieur ou égal a 1 000 kW y compris les chaudieres modulaires ;
-   dont la température du fluide caloporteur ne dépasse pas 105 °C en fonctionnement normal ;
-   dont la pression maximale de service d’eau ne dépasse pas 6 bar ;
-   qui peuvent donner lieu a condensation dans certaines conditions ;
-   de type standard et basse température.
Cette Norme européenne s’applique aux chaudieres destinées a etre montées sur des systemes de chauffage a eau chaude fermés ou ouverts.
La présente Norme européenne ne contient pas toutes les exigences nécessaires pour les chaudieres :
-   destinées a etre installées en plein air ou dans des locaux d’habitation ;
-   comportant de façon permanente plus d’une buse de raccordement au conduit d’évacuation des produits de combustion ;
-   dont le circuit de combustion est étanche par rapport au local ou la chaudiere est installée ;
-   a condensation ;
-   destinées a etre raccordées a une cheminée commune a extraction mécanique ;
-   équipées de bruleurs a air soufflé conformes a l’EN 676 (par exemple EN 303-7) ;
-   produisant de l’eau chaude sanitaire pour usages domestiques.
Cette Norme européenne couvre uniquement les essais de type.

Plinski kotli za centralno gretje - Tip kotlov B z imensko močjo nad 300 kW do vključno 1000 kW

General Information

Status
Published
Publication Date
31-Jan-2007
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Feb-2007
Due Date
01-Feb-2007
Completion Date
01-Feb-2007

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Heizkessel für gasförmige Brennstoffe - Heizkessel des Typs B mit einer Nennwärmebelastung größer als 300 kW aber gleich oder kleiner als 1 000 kWChaudieres de chauffage central utilisant les combustibles gazeux - Chaudieres de type B dont le débit calorifique nominal est supérieur a 300 kW mais inférieur ou égal a 1 000 kWGas fired central heating boilers - Type B boilers of nominal heat input exceeding 300 kW, but not exceeding 1 000 kW97.100.20Plinski grelnikiGas heaters91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:EN 13836:2006SIST EN 13836:2007en,fr,de01-februar-2007SIST EN 13836:2007SLOVENSKI

STANDARD
SIST EN 13836:2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13836August 2006ICS 91.140.65 English VersionGas fired central heating boilers - Type B boilers of nominal heatinput exceeding 300 kW, but not exceeding 1 000 kWChaudières de chauffage central utilisant les combustiblesgazeux - Chaudières de type B dont le débit calorifiquenominal est supérieur à 300 kW mais inférieur ou égal à 1000 kWHeizkessel für gasförmige Brennstoffe - Heizkessel desTyps B mit einer Nennwärmebelastung größer als 300 kWaber gleich oder kleiner als 1 000 kWThis European Standard was approved by CEN on 20 April 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13836:2006: ESIST EN 13836:2007

EN 13836:2006 (E) 2 Contents Page Foreword.............................................................................................................................................................6 1 Scope......................................................................................................................................................7 2 Normative references............................................................................................................................8 3 Terms and definitions...........................................................................................................................9 3.1 Combustible gases...............................................................................................................................9 3.2 Constituent parts of the boiler...........................................................................................................11 3.2.1 Gas supply...........................................................................................................................................11 3.2.2 Combustion circuit..............................................................................................................................12 3.2.3 Adjusting, control and safety devices..............................................................................................13 3.3 Operation of the boiler........................................................................................................................16 3.3.1 Gas rates..............................................................................................................................................16 3.3.2 Outputs.................................................................................................................................................17 3.3.4 Gas combustion..................................................................................................................................17 3.3.5 Times....................................................................................................................................................18 3.3.10 Locking out..........................................................................................................................................19 4 Classification of boilers......................................................................................................................19 4.1 Gases and categories.........................................................................................................................19 4.2 Classification according to the mode of evacuation of the combustion products......................20 4.2.1 General.................................................................................................................................................20 4.2.2 Type B...................................................................................................................................................20 4.3 Classification according to operating conditions)...........................................................................21 4.3.1 Standard boiler....................................................................................................................................21 4.3.2 Low-temperature boiler......................................................................................................................21 4.3.3 Gas condensing boiler).......................................................................................................................21 4.4 Modular boiler......................................................................................................................................21 5 Constructional requirements.............................................................................................................21 5.1 General.................................................................................................................................................21 5.2 Conversion to different gases............................................................................................................21 5.3 Materials and method of construction..............................................................................................22 5.3.1 General.................................................................................................................................................22 5.3.2 Materials and thicknesses of walls or tubes under water pressure..............................................22 5.3.3 Thermal insulation..............................................................................................................................32 5.4 Design...................................................................................................................................................33 5.4.1 General.................................................................................................................................................33 5.4.2 Modular boilers....................................................................................................................................33 5.5 Use and servicing................................................................................................................................33 5.6 Connections to the gas and water pipes..........................................................................................34 5.6.1 General.................................................................................................................................................34 5.6.2 Connections to the gas pipe..............................................................................................................34 5.6.3 Connections to the central heating circuit.......................................................................................34 5.7 Soundness...........................................................................................................................................34 5.7.1 Soundness of the gas circuit.............................................................................................................34 5.7.2 Soundness of the combustion circuit...............................................................................................34 5.8 Supply of combustion air and the evacuation of the combustion products................................35 5.8.1 Control dampers in the air or combustion products circuit...........................................................35 5.8.2 Fan........................................................................................................................................................35 5.8.3 Air proving...........................................................................................................................................35 5.8.4 Gas/air ratio controls..........................................................................................................................35 5.8.5 Condensate discharge........................................................................................................................36 SIST EN 13836:2007

EN 13836:2006 (E) 3 5.9 Checking the state of operation........................................................................................................36 5.10 Drainage...............................................................................................................................................36 5.11 Electrical equipment...........................................................................................................................37 5.12 Operational safety in the event of failure of the auxiliary energy..................................................37 5.13 Adjusting, control and safety devices..............................................................................................37 5.13.1 General.................................................................................................................................................37 5.13.2 Adjusters and range rating devices..................................................................................................37 5.13.3 Gas circuit............................................................................................................................................38 5.13.4 Gas pressure regulator.......................................................................................................................39 5.13.5 Ignition devices...................................................................................................................................40 5.13.6 Flame supervision systems...............................................................................................................40 5.13.7 Thermostats and water temperature limiting devices.....................................................................41 5.13.8 Device for monitoring the evacuation of combustion products....................................................42 5.14 Burners................................................................................................................................................42 5.15 Pressure test points............................................................................................................................42 5.16 Chemical composition of the condensate for low-temperature boilers........................................43 6 Operational requirements..................................................................................................................43 6.1 General.................................................................................................................................................43 6.2 Soundness...........................................................................................................................................43 6.2.1 Soundness of the gas circuit.............................................................................................................43 6.2.2 Soundness of the combustion circuit and correct evacuation of the combustion products.....43 6.2.3 Soundness of the water circuit..........................................................................................................43 6.3 Nominal, maximum and minimum heat inputs, and nominal output.............................................43 6.3.1 Nominal heat input or maximum and minimum heat inputs..........................................................43 6.3.2 Adjustment of the heat input by the downstream pressure...........................................................44 6.3.3 Minimum ignition rate.........................................................................................................................44 6.3.4 Nominal output....................................................................................................................................44 6.3.5 Gas pressure regulator.......................................................................................................................44 6.4 Safety of operation..............................................................................................................................44 6.4.1 Limiting temperatures........................................................................................................................44 6.4.2 lgnition — Cross-lighting — Flame stability....................................................................................45 6.4.3 Pre-purge.............................................................................................................................................46 6.5 Adjusting, control and safety devices..............................................................................................47 6.5.1 General.................................................................................................................................................47 6.5.2 Ignition devices...................................................................................................................................47 6.5.3 Flame supervision devices................................................................................................................48 6.5.4 Ignition burner and ignition rates......................................................................................................50 6.5.5 Air proving...........................................................................................................................................50 6.5.6 Gas pressure switches.......................................................................................................................51 6.5.7 Control thermostat and safety temperature limiter.........................................................................52 6.5.8 Device for monitoring the evacuation of combustion products....................................................52 6.5.9 Condensate discharge blockage.......................................................................................................53 6.6 Combustion.........................................................................................................................................53 6.6.1 Carbon monoxide................................................................................................................................53 6.6.2 Other pollutants..................................................................................................................................53 6.7 Useful efficiencies...............................................................................................................................54 6.7.1 Useful efficiency at the nominal heat input......................................................................................54 6.7.2 Useful efficiency at part load.............................................................................................................54 6.8 Criteria for condensation in the flue.................................................................................................55 6.9 Resistance of materials to pressure.................................................................................................55 6.9.1 General.................................................................................................................................................55 6.9.2 Boilers of sheet steel or non-ferrous metals...................................................................................55 6.9.3 Boilers of cast iron and cast materials.............................................................................................55 6.10 Hydraulic resistance...........................................................................................................................56 6.11 Combustion air and flue dampers.....................................................................................................56 6.12 Condensation in a standard boiler....................................................................................................56 SIST EN 13836:2007

EN 13836:2006 (E) 4 7 Test methods.......................................................................................................................................56 7.1 General.................................................................................................................................................56 7.1.1 Characteristics of the reference and limit gases.............................................................................56 7.1.2 General test conditions......................................................................................................................62 7.2 Soundness...........................................................................................................................................66 7.2.1 Soundness of the gas circuit.............................................................................................................66 7.2.2 Soundness of the combustion circuit and correct evacuation of the combustion products.....66 7.2.3 Soundness of the water circuit..........................................................................................................66 7.3 Nominal, maximum and minimum heat inputs and nominal output..............................................67 7.3.1 The nominal heat input or the maximum and minimum heat inputs.............................................67 7.3.2 Adjustment of the heat input by the downstream pressure...........................................................68 7.3.3 Minimum ignition rate.........................................................................................................................68 7.3.4 Nominal output....................................................................................................................................68 7.3.5 Gas regulator.......................................................................................................................................68 7.4 Safety of operation..............................................................................................................................69 7.4.1 Limiting temperatures.........................................................................................................................69 7.4.2 Ignition — Cross-lighting — Flame stability.....................................................................................69 7.4.3 Pre-purge..............................................................................................................................................71 7.5 Adjusting, control and safety devices..............................................................................................72 7.5.1 General.................................................................................................................................................72 7.5.2 Ignition devices...................................................................................................................................72 7.5.3 Flame supervision device...................................................................................................................73 7.5.4 Ignition burner and ignition rates......................................................................................................75 7.5.5 Air proving...........................................................................................................................................75 7.5.6 Gas pressure switches.......................................................................................................................77 7.5.7 Control thermostat and safety temperature limiter.........................................................................77 7.5.8 Device for monitoring the evacuation of combustion products....................................................79 7.5.9 Condensate discharge blockage.......................................................................................................79 7.6 Combustion..........................................................................................................................................80 7.6.1 Carbon monoxide................................................................................................................................80 7.6.2 Other pollutants...................................................................................................................................83 7.7 Useful efficiencies...............................................................................................................................86 7.7.1 Useful efficiency at the nominal heat input......................................................................................86 7.7.2 Useful efficiency at part load.............................................................................................................87 7.8 Criteria for condensation in the flue.................................................................................................92 7.8.1 Determination of flue losses..............................................................................................................92 7.8.2 Minimum temperature of the combustion products........................................................................93 7.9 Resistance of materials to pressure.................................................................................................93 7.9.1 General.................................................................................................................................................93 7.9.2 Boilers of sheet steel or non-ferrous metals....................................................................................93 7.9.3 Boilers of cast iron and cast materials.............................................................................................93 7.10 Hydraulic resistance...........................................................................................................................94 7.11 Combustion air and flue dampers.....................................................................................................94 7.12 Condensation in a standard boiler....................................................................................................94 8 Marking and instructions....................................................................................................................95 8.1 Marking of the boiler...........................................................................................................................95 8.1.1 General.................................................................................................................................................95 8.1.2 Data plate.............................................................................................................................................95 8.1.3 Supplementary marking.....................................................................................................................96 8.1.4 Packaging.............................................................................................................................................97 8.1.5 Warnings on the boiler and on the packaging.................................................................................98 8.1.6 Other information................................................................................................................................98 8.2 Instructions..........................................................................................................................................98 8.2.1 Technical instructions for the installer.............................................................................................98 8.2.2 Use and maintenance instructions for the user...............................................................................99 8.2.3 Conversion instructions...................................................................................................................100 8.3 Presentation.......................................................................................................................................100 Annex A (informative)

National situations...................................................................................................112 SIST EN 13836:2007

EN 13836:2006 (E) 5 Annex B (informative)

Special national conditions.....................................................................................118 Annex C (informative)

A-deviations..............................................................................................................119 Annex D (informative)

Practical method of calibrating the test rig to enable the heat loss Dp to be determined.........................................................................................................................................120 Annex E (informative)

Main symbols and abbreviations used within this European Standard.............121 Annex F (informative)

Compilations of test conditions used within this European Standard...............122 Annex G (informative)

Valving.......................................................................................................................125 Annex H (informative)

Determination of the heat losses from the test rig of the indirect method and the contributions of the circulating pump of the test rig......................................................128 Annex I (informative)

Means of determining the ignition time at full rate................................................129 Annex J (informative)

Example of calculation of the weighting factors for a boiler with several rates....................................................................................................................................................130 Annex K (informative)

Calculation of conversions of NOx.........................................................................132 Annex L (informative)

Use of test gases......................................................................................................133 Annex ZA (informative)

Clauses of this European Standard addressing essential requirements or provisions of EU Directives.............................................................................................................134 Bibliography...................................................................................................................................................138

SIST EN 13836:2007

EN 13836:2006 (E) 6 Foreword This European Standard (EN 13836:2006) 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 February 2007, and conflicting national standards shall be withdrawn at the latest by February 2007. It was established to deal with aspects related to:  safety;  rational use of energy;  fitness for purpose. Other types of boilers are dealt with in separate standards. This European Standard 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 Directives 90/396/EEC “Approximation of the laws of Member States concerning gas appliances” and 92/42/EEC “Efficiency requirements for new hot water boilers fired with liquid or gaseous fuels” see informative Annex ZA, which is an integral part of this European Standard. This standard covers only type testing. Boilers within the scope of this E

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