Forced draught burners for liquid fuels

This European Standard specifies the terminology, the general requirements for the construction and operation of forced draught oil burners and also the provision of control and safety devices, and the test procedure for these burners.
This European Standard applies to forced draught oil burners supplied with:
―   fuel based on first raffinates and their mixtures with biogenous liquid fuels having a viscosity at the burner inlet of 1,6 mm2/s (cSt) up to 6 mm2/s (cSt) at 20 °C; and
―   higher boiling petroleum based first raffinates (viscosity greater than 6 mm2/s), that require preheating for proper atomization.
This European Standard is applicable to:
―   single burners fitted to a single combustion chamber;
―   single burners fitted to an appliance with additional requirements;
NOTE   When additional requirements apply which are not identified or specified in this standard, the specification of the required safety measures and/or protective devices and compliance with them is outside the scope of this standard.
―   single-fuel and dual-fuel burners when operating on oil only;
―   the oil 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, see Annex J.
This European Standard also deals with the additional requirements for the burners in the scope with pressurized parts and/or firing pressurized bodies, see Annex K.
This European Standard specifies the requirements to ensure the safety during commissioning, start-up, operation, shut-down and maintenance.
This European Standard deals also with forced draught burners intended to be used with biogenous liquid fuels, mixtures.
This European Standard deals also with burners equipped to increase the total appliance efficiency; see Annex M.

Gebläsebrenner für flüssige Brennstoffe

In dieser Europäischen Norm sind die Terminologie für und die allgemeinen Anforderungen an die Konstruk-tion und den Betrieb von Ölbrennern mit Gebläse und die Bereitstellung von Steuerungs- und Sicherheits-einrichtungen festgelegt sowie das Prüfverfahren für diese Brenner.
Diese Europäische Norm ist auf automatische Ölbrenner mit Gebläse anwendbar, die vorgesehen sind für:
-   einen Brennstoff, dessen Viskosität am Brennereintritt bei 20 °C 1,6 mm2/s (cSt) bis 6 mm2/s (cSt) beträgt; und
-   höher siedende Fraktionen aus der ersten Raffination von Erdöl (Viskosität größer als 6 mm2/s), wofür eine Vorwärmung erforderlich ist, um eine ordnungsmäßige Zerstäubung zu erreichen.
Diese Europäische Norm ist anwendbar auf:
-   Einzelbrenner mit einem einzigen Feuerraum;
-   Einzelbrenner, die mit Geräten zusammengebaut werden, wobei dann die Anforderungen der für diese Geräte zutreffenden Norm zusätzlich beachtet werden müssen;
-   Ein- und Zweistoffbrenner, wenn sie nur mit Öl betrieben werden;
-   mit Öl betriebene Zweistoffbrenner, die so ausgelegt sind, dass sie gleichzeitig gasförmige und flüssige Brennstoffe verbrennen können; in diesem Fall gelten für die gasförmigen Brennstoffe auch die Anforderungen von EN 676.
Die vorliegende Europäische Norm behandelt sämtliche signifikanten maschinenbezogenen Gefährdungen, Gefährdungssituationen und Gefährdungsereignisse im Hinblick auf Brenner, wenn diese zweckentsprechend sowie unter zweckentfremdeten Bedingungen verwendet werden, die durch den Hersteller vernünftigerweise vorhersehbar sind, siehe Anhang J.
Diese Europäische Norm behandelt darüber hinaus die zusätzlichen Anforderungen für Brenner mit druckbeaufschlagten Teilen und/oder für Brenner, die Druckgeräte befeuern, siehe Anhang K.
Diese Europäische Norm legt die durch den Hersteller zu erfüllenden Anforderungen fest, die für die Sicher-heit während Inbetriebnahme, Anlauf, Betrieb und Abschaltung sowie Wartung erforderlich sind.
Diese Europäische Norm behandelt keine Gefährdungen infolge besonderer Anwendungen.
Diese Europäische Norm gilt nicht für automatische Ölbrenner mit Gebläse, die vor dem Erscheinungsdatum der Europäischen Norm hergestellt wurden.
Diese Europäische Norm behandelt auch Ölbrenner mit Gebläse, die für die Verwendung mit biogenen Brennstoffgemischen vorgesehen sind.
Diese Europäische Norm behandelt auch Brenner mit Ausrüstung für die Steigerung der Gesamt-Geräte-effizienz; siehe Anhang M.

Brûleurs à air soufflé pour combustibles liquides

La présente Norme européenne spécifie la terminologie, les exigences générales concernant la conception et le fonctionnement des brûleurs à fioul à air soufflé et également les dispositions concernant les dispositifs de régulation et de sécurité ainsi que la procédure d'essai concernant ces brûleurs.
La présente Norme européenne s'applique aux brûleurs à fioul à air soufflé alimentés par :
―   du combustible à base de premiers raffinats et leurs mélanges avec des combustibles liquides biogènes présentant une viscosité à l'entrée du brûleur comprise entre 1,6 mm2/s (cSt) et 6 mm2/s (cSt) à 20 °C et
―   des premiers raffinats à base de pétrole à point d'ébullition élevé (viscosité supérieure à 6 mm2/s), qui nécessitent un préchauffage pour une atomisation appropriée.
La présente Norme européenne peut être appliquée à :
―   des brûleurs individuels montés sur une seule chambre de combustion ;
―   des brûleurs individuels montés sur un appareil présentant des exigences supplémentaires ;
NOTE   Si des exigences supplémentaires non identifiées ou spécifiées dans la présente norme s'appliquent, la spécification des mesures de sécurité et/ou des dispositifs de protection requis et leur respect ne relèvent pas du domaine d'application de la présente norme.
―   des brûleurs mono et bicombustible lorsqu'ils fonctionnent avec du fioul uniquement ;
―   la fonction fioul des brûleurs biocombustibles conçus pour fonctionner simultanément avec des combustibles gazeux et liquides.
La présente Norme européenne traite de tous les risques significatifs des machines, des situations et des événements dangereux liés aux brûleurs, lorsque ces derniers sont utilisés comme prévu et dans des conditions anormales qui peuvent être raisonnablement prévues ; voir l'Annexe J.
La présente Norme européenne traite également des exigences supplémentaires concernant les brûleurs relevant du domaine d'application et comportant des parties sous pression et/ou installés sur des corps de chauffe fonctionnant sous pression ; voir l'Annexe K.
La présente Norme européenne spécifie les exigences à satisfaire pour garantir la sécurité au cours d'une mise en service, d'un démarrage, d'un fonctionnement, d'un arrêt et d'une maintenance.
La présente Norme européenne traite aussi des brûleurs à air soufflé destinés à être utilisés avec des combustibles liquides biogènes et des mélanges des liquides biogènes.
La présente Norme européenne traite également des équipements de brûleurs destinés à augmenter le rendement total de l'appareil ; voir l'Annexe M.

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General Information

Status
Not Published
Current Stage
4098 - Decision to abandon - Enquiry
Completion Date
16-Dec-2014

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SLOVENSKI STANDARD
oSIST prEN 267:2012
01-maj-2012
9HQWLODWRUVNLJRULOQLNL]DWHNRþDJRULYD
Forced draught burners for liquid fuels
Gebläsebrenner für flüssige Brennstoffe
Brûleurs à air soufflé pour combustibles liquides
Ta slovenski standard je istoveten z: prEN 267 rev
ICS:
27.060.10 *RULOQLNLQDWHNRþHLQWUGR Liquid and solid fuel burners
JRULYR
oSIST prEN 267:2012 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 267:2012
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oSIST prEN 267:2012
EUROPEAN STANDARD
DRAFT
prEN 267 rev
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2012
ICS 27.060.10 Will supersede EN 267:2009+A1:2011
English Version
Forced draught burners for liquid fuels

Brûleurs à air soufflé pour combustibles liquides Gebläsebrenner für flüssige Brennstoffe

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 47.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to

provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and

shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 267 rev:2012: E

worldwide for CEN national Members.
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oSIST prEN 267:2012
prEN 267:2012 (E)
Contents Page

Foreword ..............................................................................................................................................................5

Introduction .........................................................................................................................................................6

1 Scope ......................................................................................................................................................7

2 Normative references ............................................................................................................................7

3 Terms and definitions ........................................................................................................................ 11

3.1 General definitions ............................................................................................................................. 11

3.2 Fuel mass flow rate and performance .............................................................................................. 11

3.3 Combustion chamber, burner head and test rig ............................................................................. 12

3.4 Composition of the gaseous combustion products ....................................................................... 13

3.5 Adjusting, control and safety devices .............................................................................................. 14

3.6 Sequencing .......................................................................................................................................... 15

3.7 Diagrams .............................................................................................................................................. 17

4 Classification, constructional and operational requirements – safety requirements and/or

protective measures ........................................................................................................................... 17

4.1 Types of atomisation .......................................................................................................................... 17

4.2 Methods of control of automatic or semi-automatic oil burners ................................................... 17

4.3 Means of ignition ................................................................................................................................ 18

4.4 Construction ........................................................................................................................................ 18

4.5 Equipment ........................................................................................................................................... 20

4.6 Functional and operational requirements ........................................................................................ 26

4.7 Reset of burners firing into the open air shall only be done according a).Working diagram

and test diagram ................................................................................................................................. 30

4.8 Combustion products quality ............................................................................................................ 32

4.9 Machine safety requirements and/or protective measures ............................................................ 35

5 Testing ................................................................................................................................................. 35

5.1 General ................................................................................................................................................. 35

5.2 Test room ............................................................................................................................................. 36

5.3 Test rig ................................................................................................................................................. 36

5.4 Measuring equipment ......................................................................................................................... 41

5.5 Measuring accuracy ........................................................................................................................... 43

5.6 Test conditions ................................................................................................................................... 43

5.7 Test programme .................................................................................................................................. 44

5.8 Replacement of individual parts and equivalent components ...................................................... 51

6 Marking and labelling ......................................................................................................................... 51

6.1 General ................................................................................................................................................. 51

6.2 Data plate ............................................................................................................................................. 52

6.3 Other marking ..................................................................................................................................... 52

6.4 Instructions for installation, adjustment, maintenance and operation ......................................... 52

6.5 Packaging ............................................................................................................................................ 53

Annex A (normative) Smoke number .............................................................................................................. 54

A.1 Apparatus ............................................................................................................................................ 54

A.2 Smoke measuring ............................................................................................................................... 54

A.3 Determination of the smoke number ................................................................................................ 54

Annex B (normative) Emission measurements and corrections ................................................................. 55

B.1 Emission measurements ................................................................................................................... 55

B.2 Correction of the influence of combustion air temperature and humidity on NOx-

emissions ............................................................................................................................................ 55

B.3 Correction of the influence of the nitrogen content of fuel oil in case of NO -emissions .......... 55

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Annex C (informative) Conversion factors ...................................................................................................... 57

Annex D (normative) FID measuring method for recording the unburned hydrocarbons ......................... 58

D.1 Measuring system ............................................................................................................................... 58

D.2 Starting ................................................................................................................................................. 58

Annex E (informative) Conformity evaluation ................................................................................................. 59

E.1 Test laboratories and test samples, procedure ............................................................................... 59

E.2 Types of test and test documents for oil burners ............................................................................ 59

Annex F (informative) Examples for equipping of burners ........................................................................... 62

F.1 Burners ≤≤≤≤ 100 kg/h .............................................................................................................................. 62

F.2 Burners > 100 kg/h .............................................................................................................................. 64

Annex G (informative) Other fuels .................................................................................................................... 66

Annex H (informative) Specific additional requirements and limitations for use of EN 267 burners

for industrial applications .................................................................................................................. 67

H.1 Pre-heating of the combustion air ..................................................................................................... 67

H.2 Continuous working of the forced draught fan ................................................................................ 67

H.3 Variable excess of combustion air .................................................................................................... 67

H.4 Burner with spark ignition .................................................................................................................. 67

H.5 Air filtering ........................................................................................................................................... 67

H.6 Electrical equipment and EMC-compatibility ................................................................................... 67

Annex I (informative) Check of the air proving device ................................................................................... 68

Annex J (normative) Machine related hazards - additional safety requirements and/or protective

measures .............................................................................................................................................. 69

J.1 General ................................................................................................................................................. 69

J.2 List of significant hazards .................................................................................................................. 69

J.3 Safety requirements and /or protective measures ........................................................................... 69

J.4 Verification of machine safety requirements and/or protective measures ................................... 72

J.5 Information for use .............................................................................................................................. 73

Annex K (normative) Additional requirements for burners with pressurised parts and burners

firing pressurised bodies as defined in the Pressure Equipment Directive (PED) 97/23/EC ...... 74

K.1 General ................................................................................................................................................. 74

K.2 Design ................................................................................................................................................... 74

K.3 void ....................................................................................................................................................... 74

K.4 Pressurised parts ................................................................................................................................ 74

K.5 Electrical safety and fuel line components....................................................................................... 75

K.6 Air proving device ............................................................................................................................... 76

K.7 Automatic burner control unit ............................................................................................................ 76

K.8 General functions requirements ........................................................................................................ 76

K.9 Protection of the oil and air supply ................................................................................................... 76

K.10 External safety limiter ......................................................................................................................... 76

K.11 Design according to Annex L in conjunction with EN 60204-1 ...................................................... 77

K.12 Consideration: Safety life cycle ......................................................................................................... 78

K.13 Tests of pressurised parts ................................................................................................................. 79

K.14 Marking ................................................................................................................................................. 80

K.15 Instructions for installation, adjustment, maintenance and operation .......................................... 80

Annex L (normative) Electrical requirements – modifications to EN 60204-1 ............................................. 82

L.1 Scope .................................................................................................................................................... 82

L.2 Normative references .......................................................................................................................... 82

L.3 Definitions ............................................................................................................................................ 82

L.4 General requirements ......................................................................................................................... 83

L.5 Incoming supply conductor terminations and devices for disconnecting and switching off ..... 86

L.6 Protection against electric shock ...................................................................................................... 86

L.7 Protection of equipment ..................................................................................................................... 86

L.8 Equipotential bonding......................................................................................................................... 86

L.9 Control circuits and control functions .............................................................................................. 87

L.10 Operator interface and machine-mounted control devices- ........................................................... 96

L.11 Electrical equipment (Controlgear: location, mounting, and enclosures) .................................... 96

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L.12 Conductors and cables ...................................................................................................................... 97

L.13 Wiring practices .................................................................................................................................. 97

L.14 Electric motors and associated equipment ..................................................................................... 97

L.15 Accessories and lighting ................................................................................................................... 97

L.16 Marking, warning signs and reference designations ...................................................................... 97

L.17 Technical documentation .................................................................................................................. 97

L.18 Verification .......................................................................................................................................... 98

Annex M (normative) Burner equipped to increase the efficiency ............................................................. 99

Annex N (informative) Electrical interfaces for burners ............................................................................ 100

Annex O (informative) Environmental checklist EN 267 ............................................................................. 104

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of EU Directive 2006/42/EC Machinery Directive .................................................. 105

Annex ZB (informative) Relationship between this European Standard and the Essential

Requirements of EU Directive 97/23/EC Pressure Equipment Directive (PED) .......................... 106

Bibliography ................................................................................................................................................... 113

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oSIST prEN 267:2012
prEN 267:2012 (E)
Foreword

This document (prEN 267:2012) has been prepared by Technical Committee CEN/TC 47 “Atomizing oil

burners and their components - Function - Safety - Testing”, the secretariat of which is held by DIN.

This document is currently submitted to the CEN Enquiry.
This document will supersede EN 267:2009+A1:2009.

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 Annex ZA and ZB, which is an integral part of this

document.

According to EN 267:2009 and its amendment A1 the following fundamental changes are given:

Based on ISO 22968 where different to EN 267 such as
Flow rate from 100 kg / h to 30 kg/h
Update of definitions
Electrical interfaces for burners
Modification
Test and working diagram NO emission calculation

Substitution of EN 50156-1 by EN 60204-1 to include international available requirements for

the electrical safety of machines

Annex J is adapted to the new ISO EN 12100 which is substituting EN 1050 which is currently

referenced to in table J.1
New functions / requirements
remote reset
environmental aspects (environmental checklist)
increase of burner efficiency
Terminology for burner load control
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oSIST prEN 267:2012
prEN 267:2012 (E)
Introduction

This European Standard is primarily intended for automatic forced draught oil burners having a combustion air

fan, operated with liquid fuels, and intended to be marketed as a complete assembly.

Forced draught oil burners according to this European Standard are often used in industrial applications. The

safety principles are the same as for forced draught oil burners used for household/commercial applications.

Industrial forced draught oil burners however need to operate safely in their industrial environment and the

risks involved can differ from those for household applications. These industrial forced draught oil burners can

be characterised by the ability to withstand industrial environmental influences, like moisture, high temperature,

electrical and magnetic phenomena, vibrations, etc.

Special requirements for forced draught burners for industrial premises will be given as a note with the

addition "Industrial application".

Further information and application limitations for forced draught burners, which are used for industrial

application, are given in informative Annex H.

Principal requirements for installation of oil burners for industrial thermal processing are covered by EN 746-1

to -8.
This document is a type C standard as stated in EN ISO 12100.

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.

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oSIST prEN 267:2012
prEN 267:2012 (E)
1 Scope

This European Standard specifies the terminology, the general requirements for the construction and

operation of forced draught oil burners and also the provision of control and safety devices, and the test

procedure for these burners.

This European Standard applies to automatic forced draught oil burners supplied with:

 a fuel having a viscosity at the burner inlet of 1,6 mm²/s (cSt) up to 6 mm²/s (cSt) at 20 °C; and

 higher boiling petroleum based first raffinates (viscosity greater than 6 mm /s), that require preheating for

proper atomisation.
This European Standard is applicable to:
 single burners fitted to a single combustion chamber;

 single burners fitted to an appliance with additional requirements, then the relevant standard of this

appliance shall be taken into account;
 single-fuel and dual-fuel burners when operating on oil only;

 the oil function of dual-fuel burners designed to operate simultaneously on gaseous and liquid fuels, in

which case the requirements of EN 676 will also apply in respect of the gaseous fuel function.

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 also deals with the additional requirements for the burners in the scope with

pressurised parts and/or firing pressurised bodies, see Annex K.

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 oil burners which are manufactured

before the date of its publication as European Standard.

This European Standard deals also with forced draught burners intended to be used with biogenous fuels,

mixtures.

This European Standard deals also with burners equipped to increase the total appliance efficiency; see

Annex M.
2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references only the edition cited applies. For undated references the latest edition of the referenced document

(including any amendments) applies.
EN 230, Automatic burner control systems for oil burners
EN 287-1, Qualification test of welders — Fusion welding — Part 1: Steels
EN 676:2003+A2:2008, Automatic forced draught burners for gaseous fuels
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oSIST prEN 267:2012
prEN 267:2012 (E)

EN 953, Safety of machinery — Guards — General requirements for the design and construction of fixed and

movable guards
EN 1044, Brazing — Filler metals

EN 1057, Copper and copper alloys — Seamless, round copper tubes for water and gas in sanitary and

heating applications

EN 1088:1995+A2:2008, 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 1254-1, Copper and copper alloys — Plumbing fittings — Part 1: Fittings with ends for capillary soldering

or capillary brazing to copper tubes

EN 1254-4, Copper and copper alloys — Plumbing fittings — Part 4: Fittings combining other end connections

with capillary or compression ends
EN 1854, Pressure sensing devices for gas burners and gas burning appliances
EN 10204, Metallic products — Types of inspection documents

EN 10220, Seamless and welded steel tubes — Dimensions and masses per unit length

EN 10305-1, Steel tubes for precision applications — Technical delivery conditions — Part 1: Seamless cold

drawn tubes

EN 10305-2, Steel tubes for precision applications — Technical delivery conditions — Part 2: Welded cold

drawn tubes

EN 10305-3, Steel tubes for precision applications — Technical delivery conditions — Part 3: Welded cold

sized tubes

EN 10305-4, Steel tubes for precision applications — Technical delivery conditions — Part 4: Seamless cold

drawn tubes for hydraulic and pneumatic power systems

EN 10305-5, Steel tubes for precision applications — Technical delivery conditions — Part 5: Welded and cold

sized square and rectangular tubes

EN 10305-6, Steel tubes for precision applications — Technical delivery conditions — Part 6: Welded cold

drawn tubes for hydraulic and pneumatic power systems

EN 13611:2007, Safety and control devices for gas burners and gas burning appliances — General

requirements

EN 15035, Heating boilers — Special requirements for oil fired room sealed units up to 70 kW

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
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oSIST prEN 267:2012
prEN 267:2012 (E)

EN 60204-1: 2009 Safety of machinery - Electrical equipment of machines - Part 1: General requirements

(IEC 60204-1:2005, A1:2008, modified)

EN 60335-2-102:2005, 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)

EN 60730-1, Automatic electrical controls for household and similar use — Part 1: General requirements

(IEC 60730-1:1999, modified)

EN 61310-1, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual,

auditory and tactile signals (IEC 61310-1:2007)

EN 62061 Safety of machinery - Functional safety of safety-related electrical, electronic and programmable

electronic control systems (IEC 62061:2005)

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 1127, Stainless steel
...

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