SIST EN 676:2004+A2:2008
(Main)Automatic forced draught burners for gaseous fuels
Automatic forced draught burners for gaseous fuels
This European Standard specifies the terminology, the general requirements for the construction and operation of automatic forced draught gas burners and also the provision of control and safety devices, and the test procedure for these burners.
This standard is applicable to
- automatic gas burners with a combustion air fan (hereinafter called "burners") as described in 3.1.2 and gas line components, intended for use in appliances of different types, and that are operated with gaseous fuels;
- total pre mixed burners and nozzle mixed burners.
The standard is applicable to
- single burners with a single combustion chamber;
- single fuel and dual fuel burners when operating only on gas;
- gas function of dual-fuel burners designed to operate simultaneously on gaseous and liquid fuels.
This European Standard deals with all significant machine hazards, hazardous situations and events relevant to burners, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer, see Annex J.
This European Standard specifies the requirements to be met by the manufacturer to ensure the safety during commissioning, start-up, operation, shut-down and maintenance.
This European Standard does not deal with hazards due to specific applications.
This European Standard is not applicable to automatic forced draught gas burners which are manufactured before the date of its publication as EN.
This European Standard does not apply to burners specifically designed for use in industrial processes carried out on industrial premises.
This European Standard deals also with the additional requirements for the burners in the scope with pressurised parts and /or firing pressurised bodies, see Annex K.
Automatische Brenner mit Gebläse für gasförmige Brennstoffe
Die vorliegende Europäische Norm legt die Terminologie für und die allgemeinen Anforderungen an die Konstruktion und den Betrieb von automatischen Gasbrennern mit Gebläse und die Bereitstellung von Steuerungs- und Sicherheitseinrichtungen fest sowie das Prüfverfahren für diese Brenner.
Diese Norm gilt für
automatische Gasbrenner mit einem Verbrennungsluftgebläse (im Folgenden als 'Brenner' bezeichnet), wie in 3.1.2 beschrieben, und gasseitige Ausrüstungsteile, die für die Verwendung in unterschiedlichen Gerätetypen vorgesehen sind und die mit gasförmigen Brennstoffen betrieben werden;
Vormischbrenner und Düsenbrenner.
Diese Norm gilt für
Einzelbrenner mit einem einzigen Feuerraum;
Brenner und Zweistoffbrenner für den ausschließlichen Betrieb mit Gas;
den Gasbetrieb von Zweistoffbrennern, die für den gleichzeitigen Betrieb mit gasförmigen und flüssigen Brennstoffen konstruiert sind.
Die vorliegende Europäische Norm behandelt sämtliche signifikanten maschinenbezogenen Gefährdungen, Gefährdungssituationen und Ereignisse im Hinblick auf Brenner, wenn diese zweckentsprechend sowie unter zweckentfremdeten Bedingungen verwendet werden, die durch den Hersteller vernünftigerweise vorhersehbar sind, siehe Anhang J.
Die vorliegende Europäische Norm legt die durch den Hersteller zu erfüllenden Anforderungen fest, die für die Sicherheit während der Inbetriebnahme, beim Einschalten, Betrieb und Abschalten sowie bei der Wartung erforderlich sind.
Die vorliegende Europäische Norm behandelt keine Gefährdungen infolge besonderer Verwendungsweisen.
Die vorliegende Europäische Norm gilt nicht für automatische Gasbrenner mit Gebläse, die vor dem Erscheinungsdatum der Norm hergestellt wurden.
Diese Europäische Norm gilt nicht für Brenner, die speziell für den Einsatz in industriellen Prozessen ausgelegt sind, die in industriellen Anlagen erfolgen.
Brûleurs automatiques à air soufflé pour combustibles gazeux
La présente Norme européenne prescrit la terminologie, les exigences générales concernant la construction et le fonctionnement des brûleurs automatiques à gaz à air soufflé ainsi que les dispositions pour leur équipement et dispositifs de régulation et de sécurité et les méthodes d’essais pour ces brûleurs."
La présente Norme européenne est applicable :
!aux brûleurs automatiques à gaz avec ventilateur d’air de combustion (dénommés ci-après «brûleurs») comme décrit au 3.1.2 et les composants de la ligne gaz, destinés à être utilisés sur des appareils de différents types et qui fonctionnent avec des combustibles gazeux ;"
aux brûleurs à pré-mélange total et aux brûleurs à mélange au nez.
La présente Norme européenne est aussi applicable :
!aux brûleurs individuels alimentant une seule chambre de combustion ;"
aux brûleurs mono et bi combustible pour leur fonctionnement exclusif au gaz ;
!à la fonction gaz des brûleurs bi-combustibles conçus pour fonctionner simultanément aux combustibles liquides et gazeux."
La présente norme traite des risques significatifs des machines, des situations et événements dangereux relatifs aux brûleurs lorsqu’ils sont utilisés comme prévu et dans les conditions anormales qui sont raisonnablement prévisibles par le fabricant, voir l’Annexe J.
La présente norme spécifie les exigences à satisfaire par le fabricant afin d’assurer le sécurité lors de la réception, de la mise en route, de l’utilisation, de l’arrêt et de l’entretien.
La présente norme ne traite pas des risques issus des applications spécifiques.
La présente norme n’est pas applicable aux brûleurs qui sont fabriqués avant la date de publication du présent document par le CEN."
La présente norme ne s’applique pas aux brûleurs spécialement conçus pour une utilisation dans un processus industriel réalisé sur un site industriel.
Samodejni plinski ventilatorski gorilniki (vključno z dopolnilom A2)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 676:2004+A2:2008
01-november-2008
6DPRGHMQLSOLQVNLYHQWLODWRUVNLJRULOQLNL YNOMXþQR]GRSROQLORP$
Automatic forced draught burners for gaseous fuels
Automatische Brenner mit Gebläse für gasförmige Brennstoffe
Brûleurs automatiques à air soufflé pour combustibles gazeux
Ta slovenski standard je istoveten z: EN 676:2003+A2:2008
ICS:
27.060.20 Plinski gorilniki Gas fuel burners
SIST EN 676:2004+A2:2008 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 676:2004+A2:2008
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SIST EN 676:2004+A2:2008
EUROPEAN STANDARD
EN 676:2003+A2
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2008
ICS 27.060.20 Supersedes EN 676:2003
English Version
Automatic forced draught burners for gaseous fuels
Brûleurs automatiques à air soufflé pour combustibles Automatische Brenner mit Gebläse für gasförmige
gazeux Brennstoffe
This European Standard was approved by CEN on 3 April 2003 and includes Amendment 1 approved by CEN on 1 April 2008 and
Amendment 2 approved by CEN on 1 April 2008.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 676:2003+A2:2008: E
worldwide for CEN national Members.
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SIST EN 676:2004+A2:2008
EN 676:2003+A2:2008 (E)
Contents
Foreword.4
1 Scope .6
2 Normative references .6
3 Terms and definitions .9
3.1 General terms and definitions.9
3.2 Specific terms and definitions.10
4 !Constructional and operational requirements – safety requirements and/or protective
measures".16
4.1 Conversion to different gases .16
4.2 Construction.16
4.3 Equipment .18
4.4 Functional and operational requirements.24
4.5 !Machine safety requirements and/or protective measures .31
5 Test methods.32
5.1 General.32
5.2 Functional tests .36
5.3 Operation .37
5.4 Tests to be carried out on the working and test diagrams .38
5.5 Combustion.42
5.6 Start-up .43
5.7 Obtaining the heat input .43
5.8 Electrical safety.44
5.9 !Verification of safety and /or protective measures.44
6 Marking, labelling and packaging .44
6.1 General.44
6.2 Data plate.45
6.3 Other marking .45
6.4 Instructions for installation, adjustment, maintenance and operation.46
6.5 Marking on the packaging .47
Annex A (informative) Determination of the combustion characteristics - carbon monoxide and
nitrogen oxides .60
Annex B (informative) Examples of control box sequencing .62
Annex C (informative) Test gases.63
C.1 General.63
C.2 Conditions for preparation of the test gases.63
C.3 Practical application of the test gases .64
Annex D (informative) Gas connections conditions in common use in the various countries .67
Annex E (informative) Tests .68
E.1 Supplementary testing .68
E.2 Drawing review.68
E.3 Individual test and inspection .68
E.4 Test report .69
Annex F (informative) Use of alternative gas lines and test documentation .70
F.1 Use of alternative gas lines .70
F.2 Test documentation.70
Annex G (informative) Correction of the influence of combustion air temperature and humidity on NO -
x
emissions .71
Annex H (informative) Check of the air proving device.72
2
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SIST EN 676:2004+A2:2008
EN 676:2003+A2:2008 (E)
Annex I (informative) !Additional recommendations for specific applications".73
I.1 !General .73
I.2 Pre-heating of the combustion air .73
I.3 Continuous working of the air ventilator .73
I.4 Variable excess of combustion air .73
I.5 Burner with start gas flame .73
I.6 Air filtering.74
Annex J (normative) !Machine related hazards – safety requirements and/or protective measures .75
J.1 General.75
J.2 List of significant hazards .75
J.3 Safety requirements and /or protective measures.75
J.4 Verification of machine safety requirements and/or protective measures .78
J.5 Information for use .78
Annex K (normative) #Additional requirements for burners with pressurised parts and burners firing
pressurised bodies as defined in Pressure Equipment Directive (PED) 97/23/EC .79
K.1 General.79
K.2 Design.79
K.3 Materials .79
K.4 Pressurised parts .79
K.5 Gas line components .80
K.6 Gas pressure governor .81
K.7 High gas pressure over load protection device .81
K.8 Automatic safety shut-off valve .81
K.9 Air proving device .81
K.10 Automatic burner control system .81
K.11 Means for draining and venting .81
K.12 General functions requirements .82
K.13 External safety limiter .83
K.14 Design according to EN 50156-1.83
K.15 Consideration: safety life cycle.84
K.16 Tests of pressurised parts.85
K.17 Other marking .86
K.18 Instructions for installation, adjustment, maintenance and operation.86
Annex ZA (informative) A-deviations .87
Annex ZB (informative) Clauses of this European Standard addressing essential requirements or other
provisions of EU Directives.88
Annex ZC (informative) #Relationship between this European Standard and the essential safety
requirements of the Pressure Equipment (PED) Directive 97/23/EC$ .91
Annex ZD (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC Machinery Directive" .98
Annex ZE (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC Machinery Directive" .99
Bibliography.100
3
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SIST EN 676:2004+A2:2008
EN 676:2003+A2:2008 (E)
Foreword
This document (EN 676:2003+A2:2008) has been prepared by Technical Committee CEN/TC 131 “Gas burners
using fans”, the secretariat of which is held by DIN.
This document shall be given the status of a national standard, either by publication of an identical text or by
endorsement, at the latest by December 2008 and conflicting national standards shall be withdrawn at the latest by
June 2010.
This document includes Amendment 1, approved by CEN on 2008-04-01 and Amendment 2, approved by CEN on
2008-04-01.
This document supersedes #EN 676:2003$.
The start and finish of text introduced or altered by amendment is indicated in the text by tags ! " and # $.
This document has been prepared under a mandate given to CEN by the European Commission and the European
Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative #Annexes ZB, ZC, ZD and ZE$, which are integral parts
of this document.
!deleted text"
According to edition 1996 the following fundamental changes are given:
revisions for special applications;
implementation of NO -classes and forming of arithmetic average values for determining the NO -values;
x x
implementation of appliance categories for forced draught burners.
#Following a request from CEN/TC 131, CEN has agreed to defer the date of withdrawal of EN 676:2003 for a
transition period of 2 years.$
#Annexes A, B, C, D, E, F, G, H, I, ZA, ZB, ZC, ZD and ZE are informative.$
!Annexes J and K are normative."
This document includes a Bibliography.
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, 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.
4
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SIST EN 676:2004+A2:2008
EN 676:2003+A2:2008 (E)
Introduction
This European Standard is primarily intended for automatic forced draught gas burners having a combustion air
fan, operated with gaseous fuels, and intended to be marketed as a complete assembly.
EN 437 sets out a system of classification of appliances into categories defined according to the gases and
pressures for which they are designed.
Such a system of classification, when applied to forced draught burners, can lead to difficulties in defining the
precise category to which a particular burner should be allocated. For example many burners are designed to
operate on a wide range of fuel gases with little or no modification other than adjustment of air supply.
The technical committee responsible for the standard decided that the following appliance categories for forced
draught burners should apply:
single categories: I for natural gas and I for liquefied petroleum gas;
2R 3R
dual category: II for natural and liquefied petroleum gas.
2R /3R
All the burners of this standard marked with these categories are commissioned on site and the measured values
are recorded in a commissioning report.
However it should be noted that the Gas Appliance Directive requires the specification of the type of gas and the
supply pressure used as well as the burner category.
Forced draught gas burners according to this standard are often used in industrial applications. The safety
principles are the same as for forced draught gas burners used for household/commercial applications. Industrial
forced draught gas burners however should operate safely in their industrial environment and the risks involved can
differ from those for household applications. These industrial forced draught gas burners can be characterized by
the ability to withstand industrial environmental influences, like moisture, high temperature, electrical and magnetic
phenomena, vibrations, etc.
Principal requirements for installation and construction of gas burners and industrial thermal processing are
covered by EN 746-family.
Special requirements for forced draught burners for industrial premises will be given as a note with the addition
"Industrial application".
Further information and application limitation for EN 676 forced draught burners which are used for industrial
application are given in informative annex I.
!This document is a type C standard as stated in EN ISO 12100-1 and EN ISO 12100-2.
The machinery concerned and the extent to which hazards, hazardous situations and hazardous events are
covered are indicated in the scope of this document.
When provisions of this type C standard are different from those which are stated in type A or B standards, the
provisions of this type C standard take precedence over the provisions of the other standard, for machines that
have been designed and built according to the provisions of this type C standard."
5
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SIST EN 676:2004+A2:2008
EN 676:2003+A2:2008 (E)
1 Scope
!This European Standard specifies the terminology, the general requirements for the construction and operation
of automatic forced draught gas burners and also the provision of control and safety devices, and the test
procedure for these burners."
This standard is applicable to
!automatic gas burners with a combustion air fan (hereinafter called "burners") as described in 3.1.2 and
gas line components, intended for use in appliances of different types, and that are operated with gaseous
fuels;"
total pre-mixed burners and nozzle mixed burners.
The standard is applicable to
!single burners with a single combustion chamber;"
single-fuel and dual-fuel burners when operating only on gas;
!gas function of dual-fuel burners designed to operate simultaneously on gaseous and liquid fuels."
!This European Standard deals with all significant machine hazards, hazardous situations and events relevant to
burners, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the
manufacturer, see Annex J.
This European Standard specifies the requirements to be met by the manufacturer to ensure the safety during
commissioning, start-up, operation, shut-down and maintenance.
This European Standard does not deal with hazards due to specific applications.
This European Standard is not applicable to automatic forced draught gas burners which are manufactured before
the date of its publication as EN."
#This European Standard does not apply to burners specifically designed for use in industrial processes carried
out on industrial premises.
This European Standard deals also with the additional requirements for the burners in the scope with pressurised
parts and /or firing pressurised bodies, see Annex K.$
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
#EN 88-1, Pressure regulators and associated safety devices for gas appliances — Part 1: Pressure regulators
for inlet pressures up to and including 500 mbar
EN 88-2 Pressure regulators and associated safety devices for gas appliances — Part 2: Pressure regulators for
inlet pressures above 500 mbar up to and including 5 bar$
EN 161, Automatic shut-off valves for gas burners and gas appliances
EN 267, Forced draught oil burners — Definitions, requirements, testing, marking
6
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SIST EN 676:2004+A2:2008
EN 676:2003+A2:2008 (E)
!EN 294, Safety of machinery — Safety distance to prevent danger zones from being reached by the upper
limbs"
EN 298, Automatic gas burner control systems for gas burners and gas burning appliances with or without fans
EN 334, Gas pressure regulators for inlet pressures up to 100 bar
!EN 953, Safety of machinery — Guards - General requirements for the design and construction of fixed and
movable guards
EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design and
selection"
EN 1092-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated
— Part 1: Steel flanges
EN 1092-2, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated
— Part 2: Cast iron flanges
!EN 1092-3", Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated — Part 3: Copper alloy flanges
EN 1643, Valve proving systems for automatic shut-off valves for gas burners and gas appliances
EN 1854, Pressure sensing devices for gas burners and gas burning appliances
#EN 10204, Metallic products — Types of inspection documents$
EN 10208-1, Steel pipes for pipelines for combustible fluids — Technical delivery conditions — Part 1: Pipes of
requirement class A
EN 10208-2, Steel pipes for pipelines for combustible fluids — Technical delivery conditions — Part 2: Pipes of
requirement class B
EN 10216-1, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy
steel tubes with specified room temperature properties
EN 10217-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel
tubes with specified room temperature properties
EN 12067-1, Gas/air ratio controls for gas burners and gas burning appliances — Part 1: Pneumatic types
!EN 12067-2", Gas/air ratio controls for gas burners and gas burning appliances — Part 2: Electronic types
!EN 15036-1:2006, Heating boilers — Test regulations for airborne noise emissions from heat generators —
Part 1: Airborne noise emissions from heat generators"
#EN 50156-1:2004, Electrical equipment for furnaces and ancillary equipment — Part 1: Requirements for
application design and installation$
!deleted text"
!EN 60335-2-102:2007, Household and similar electrical appliances — Safety — Part 2-102: Particular
requirements for gas, oil and solid-fuel burning appliances having electrical connections
(IEC 60335-2-102:2004, modified)"
EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)
!deleted text"
7
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SIST EN 676:2004+A2:2008
EN 676:2003+A2:2008 (E)
!EN 60730-1, Automatic electrical controls for household and similar use — Part 1: General requirements
(IEC 60730-1:1999, modified + A1:2003, modified)
EN 61310-1, Safety of machinery — Indication, marking and actuating — Part 1: Requirements for visual, auditory
and tactile signals (IEC 61310-1:1995 + Corrigendum 1995)"
!EN 10220", Seamless and welded steel tubes — Dimensions and masses per unit length
!EN ISO 228-1", Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions,
tolerances and designation (ISO 228-1:2000)
EN ISO 3166-1, Codes for the representation of names of countries and their subdivisions — Part 1: Country codes
!(ISO 3166-1:2006)"
!EN ISO 4871, Acoustics — Declaration and verification of noise emission values of machinery and equipment
(ISO 4871:1996)"
#EN ISO 9606-2, Qualification test of welders — Fusion welding — Part 2: Aluminium and aluminium alloys
(ISO 9606- 2:2004)
EN ISO 9606-3, Approval testing of welders — Fusion welding — Part 3: Copper and copper alloys (ISO 9606-
3:1999)
EN ISO 9606-4, Approval testing of welders — Fusion welding — Part 4: Nickel and nickel alloys
(ISO 9606-4:1999)
EN ISO 9606-5, Approval testing of welders — Fusion welding — Part 5: Titanium and titanium alloys, zirconium
and zirconium alloys (ISO 9606-5:2000)$
!EN ISO 12100-1, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic
terminology, methodology (ISO 12100-1:2003)
EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical
principles (ISO 12100-2:2003)
EN ISO 13849-1, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for
design (ISO 13849-1:2006)"
#EN ISO 15609-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 1: Arc welding (ISO 15609-1:2004)
EN ISO 15609-2, Specification and qualification of welding procedures for metallic materials — Welding procedure
specification — Part 2: Gas welding (ISO 15609-2:2001)
EN ISO 15609-3, Specification and qualification of welding procedures for metallic materials — Welding procedure
specification — Part 3: Electron beam welding (ISO 15609-3:2004)
EN ISO 15609-4, Specification and qualification of welding procedures for metallic materials — Welding procedure
specification — Part 4: Laser beam welding (ISO 15609-4:2004)
EN ISO 15609-5, Specification and qualification of welding procedures for metallic materials — Welding procedure
specification — Part 5: Resistance welding (ISO 15609-5:2004)
EN ISO 15612, Specification and qualification of welding procedures for metallic materials — Qualification by
adoption of a standard we
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