ДСТУ EN 303-5:2014
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EN 303-5:2012
en: Heating boilers - Part 5: Heating boilers for solid fuels, manually andautomatically stoked, nominal heat output of up to 500 kW - Terminology,requirements, testing and marking
uk:
Supersedes EN 303-5:1999
English Version
Heating boilers - Part 5: Heating boilers for solid fuels, manuallyand automatically stoked, nominal heat output of up to 500 kW -Terminology, requirements, testing and marking
This European Standard was approved by CEN on 10 May 2012.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, 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.
Management Centre: Avenue Marnix 17, B-1000 Brussels
Contents Page
Foreword 5
Introduction 7
1 Scope 8
1.1 General 8
1.2 Fuels 8
1.2.1 Biogenic fuels 9
1.2.2 Fossil fuels 9
1.2.3 Other solid fuels 9
2 Normative references 9
3 Terms and definitions 12
4 Requirements 17
4.1 General requirements 17
4.2 Construction requirements 18
4.2.1 Production documentation 18
4.2.2 Heating boilers made of steel and non-ferrous materials 19
4.2.3 Boilers made of cast materials 24
4.2.4 Design requirements 25
4.3 Safety requirements 28
4.3.1 General 28
4.3.2 Manual stoking 28
4.3.3 Safety against back burning for automatic stoked boilers 28
4.3.4 Safety against fuel overload of the boiler or interruption in fuel supply 32
4.3.5 Safety against lack of air supply or insufficient combustion 32
4.3.6 Surface temperatures 32
4.3.7 Leakage of the combustion system 32
4.3.8 Temperature control and limiting devices 33
4.3.9 Heating boiler accessories 34
4.4 Performance requirements 35
4.4.1 General 35
4.4.2 Boiler efficiency 35
4.4.3 Flue gas temperature 36
4.4.4 Draught 36
4.4.5 Combustion period 36
4.4.6 Minimum heat output 36
4.4.7 Emission limits 37
5 Test 38
5.1 Test conditions 38
5.1.1 General 38
5.1.2 Choice of boiler and fittings to be tested 39
5.1.3 Condition of the boiler 39
5.1.4 Type test 39
5.2 Measuring instruments and methods 39
5.3 Test fuel 40
5.4 Pressure test for boilers of sheet or sheet metal of non-ferrous metal 42
5.4.1 Tests to be carried out before production 42
5.4.2 Test during production 42
5.5 Pressure test for boilers of cast iron or non-ferrous metals 42
5.5.1 Test to be carried out before production 42
5.5.2 Test during production 43
5.6 Test for gas side soundness 44
5.7 Conducting the boiler performance test 44
5.7.1 General 44
5.7.2 Setting up the test rig 45
5.7.3 Measured quantities 45
5.7.4 Test method and test duration 46
5.8 Determination of the heat output and the efficiency of the boiler 47
5.8.1 Method for the measurement of the heat output 47
5.8.2 Determining the nominal heat output 47
5.8.3 Determining the minimum heat output 47
5.8.4 Determination of the boiler efficiency (direct method) 48
5.8.5 Electrical consumption 48
5.9 Determination of the emission values 48
5.9.1 Heating boiler with manual stoking 48
5.9.2 Heating boiler with automatic stoking 48
5.9.3 Determination of the emissions at minimum heat output 48
5.10 Calculation 49
5.10.1 Boiler heat output 49
5.10.2 The heat input 49
5.10.3 Boiler efficiency 49
5.10.4 Emissions 49
5.11 Determination of the waterside resistance 50
5.12 Surface temperature 50
5.13 Function check of the temperature controller and safety temperature limiter at the boiler 50
5.14 Function test for the rapidly disconnect able firing system 51
5.15 Function test on the device for dissipating excess heat (partly or non disconnectable firing system) 51
5.16 Check of the safety and risk assessment 51
5.16.1 General 51
5.16.2 Safety test of consequences of fuel overload and effect of a blockage of the fuel supply 53
5.16.3 Loss of combustion air supply 53
5.16.4 Resistance to thermal conductance 53
5.16.5 Additional tests for alternative verification of the safety against back burning 53
6 Test report and other documents 54
7 Marking 55
7.1 General 55
7.2 Information on the boiler plate 55
7.3 Boiler plate requirements 55
8 Technical documentation, supplied with boiler 55
8.1 General 55
8.2 Technical information and installation instructions 55
8.3 Operating instructions 57
Annex A (informative) Manual measurement of particles in the gas flow, gravimetric determination of particle load with filter systems 58
Annex В? (normative) Design criteria for solutions to prevent back burning 61
Annex C (informative) A-deviations 66
C.1 General 66
C.2 Deviations from Austria: 66
C.2.1 General 66
C.2.2 Boiler efficiency for nominal heat output and minimum heat output 66
C.2.3 Emission limits 67
C.3 Deviations from CROATIA 68
C.4 Deviations from DENMARK 69
C.4.1 Subclause 4.4.2 Boiler Efficiency 69
C.4.2 Subclause 4.4.7 Emission Limits 69
C.4.3 Subclause 5.1 Test Base 70
Deviations from Germany 70
.1 Clause 4.4.7 Emission limits 70
.2 Clause 5.9 72
Deviations from Switzerland 72
Deviations from United Kingdom 73
Deviations for Italy 77
Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC Machinery Directive 79
Bibliography 81
Foreword
This document (EN 303-5:2012) has been prepared by Technical Committee / 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 December 2012, and conflicting national standards shall be withdrawn at the latest by December 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 303-5:1999.
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 Ell Directive(s), see informative Annex ZA, which is an integral part of this document.
In comparison with EN 303-5:1999, the following technical changes were made:
a) the scope was extended to a nominal heat output of the heating boilers for < 500 kW;
b) usable fuel to non-wood biomass and further solid fuels were extended;
c) requirements for materials, weld joints and wall thicknesses were revised;
d) risk analysis was implemented;
e) general and electrical safety requirements were revised;
f) emission class 1 and 2 were deleted and new emission class 4 and 5 were added;
g) tests were revised and new tests for safety requirements were added;
h) Annexes were re-structured;
i) Consideration was given to the essential requirements of the Machinery Directive 2006/42/EC.
The following structure is intended for the European Standards for heating boilers:
—? EN 303-1, Heating boilers — Part 1: Heating boilers with forced draught burners — Terminology, general requirements, testing and marking
—? EN 303-2, Heating boilers — Part 2: Heating boilers with forced draught burners — Special requirements for boilers with atomizing oil burners
—? EN 303-3, Heating boilers — Part 3: Gas-fired central heating boilers — Assembly comprising a boiler body and a forced draught burner
—? EN 303-4, Heating boilers — Part 4: Heating boilers with forced draught burners — Special requirements for boilers with forced draught oil burners with outputs up to 70 kW and a maximum operating pressure of 3 bar — Terminology, special requirements, testing and marking
—? EN 303-5, Heating boilers — Part 5: Heating boilers for solid fuels, manually and automatically stoked, nominal heat output of up to 500 kW — Terminology, requirements, testing and marking
—? EN 303-6, Heating boilers — Part 6: Heating boilers with forced draught burners — Specific requirements for the domestic hot water operation of combination boilers with atomizing oil burners of nominal heat input not exceeding 70 kW
—? EN 303-7, Heating boilers — Part 7: Gas-fired central heating boilers equipped with a forced draught burner of nominal heat output not exceeding 1 000 kW
—? EN 304, Heating boilers — Test code for heating boilers for atomizing oil burners.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Introduction
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.
This standard deals with boilers which are within the Scope Machinery Directive and boilers that are outs