SIST EN 50465:2015
(Main)Gas appliances - Combined heat and power appliance of nominal heat input inferior or equal to 70 kW
Gas appliances - Combined heat and power appliance of nominal heat input inferior or equal to 70 kW
This European Standard specifies the requirements and test methods for the construction, safety, fitness
for purpose, rational use of energy and the marking of a micro combined heat and power appliance;
(hereafter referred to as “mCHP appliance”).
This European Standard applies to mCHP appliances of types B22, B23, B32, B33, B52, B53, C1, C3, C42, C43
C52, C53, C62, C63, C82, C83 and C9 based on the classifications of CEN/TR 1749:
– that use one or more supplied gases of the three gas families at the pressures stated in EN 437,
– where the temperature of the heat transfer fluid of the heating system (heating water circuit) does
not exceed 105 ºC during normal operation,
– where the maximum operating pressure in the
- heating water circuit does not exceed 6 bar,
- domestic hot water circuit (if installed) does not exceed 10 bar,
– which are either intended to be installed indoors or outdoors in a partially protected place,
– which are intended to produce hot water either by the instantaneous or storage principle,
– which have a maximum heat input (based on net calorific value) not exceeding 70 kW,
– which are designed for sealed or open water systems.
NOTE 1 For applications where the maximum allowable water temperature exceeds 110 ºC or where volume multiplied by
maximum allowable pressure exceeds 50 bar litres, further requirements may be necessary to comply with the essential
requirements of Directive 97/23/EC (Pressure Equipment Directive (PED)).
NOTE 2 For mCHP appliances with constructions that might not be fully covered by this European Standard or by another specific
standard, the risk associated with the alternative construction will be assessed.
NOTE 3 prEN 13203-4 will specify the assessment of energy consumption for domestic hot water production of gas combined
heat and power appliances (mCHP).
This European Standard does not contain the requirements necessary for appliance capable of producing
electrical energy without using the thermal energy.
This European Standard does not cover all the requirements for mCHP appliances that are intended to be
connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the
lifetime of the appliance (see Annex DD).
Gasgeräte - Geräte zur Kraft-Wärme-Kopplung mit einer Nennwärmebelastung kleiner oder gleich 70 kW
Dieser Entwurf legt die Anforderungen und Prüfmethoden für den Bau, die Sicherheit, die Gebrauchstauglichkeit und den rationellen Energieeinsatz und die Kennzeichnung von Mikro-Kraft-Wärme-Kopplungsanlagen (ab hier als µKWK-Anlage bezeichnet).
Dieser Entwurf gilt bei µKWK-Anlagen der Typen B22, B23, B32, B33, B52, B53, C1, C3, C4, C5, C6, und C8, wie in CEN/TR 1749 spezifiziert,
– die ein oder mehr Verbrennungsgase der drei Gasfamilien bei den in EN 437 angegebenen Drücken verwenden
– bei welchen die Temperatur des Wärmetauschermediums 105 °C bei Nennbetrieb nicht überschreitet.
– bei welchen der maximale Betriebsdruck im
• Heizwasserkreislauf 6 bar nicht überschreitet,
• häuslichen Warmwasserkreislauf (falls installiert) maximal 10 bar beträgt.
– die unter bestimmten Umständen Kondensation hervorrufen können;
– die vom Hersteller als Brennwertgerät bezeichnet werden;
– die vorgesehen sind für den Einbau in teilweise geschützte Räume;
– die vorgesehen sind um Warmwasser entweder durch Durchlauf- oder Speicherprinzip zu erzeugen;
– die eine maximale Wärmebelastung (bezogen auf Brennwert)von 70 kW nicht überschreiten;
– die für abgedichtete oder offene Wassersysteme konstruiert sind;
ANMERKUNG 1 Anwendungen, deren maximal erlaubte Temperatur 110 °C überschreitet, oder bei denen das Volumen multipliziert mit dem maximal erlaubten Druck 50 bar•liter übersteigt, können weitere Anforderungen nach sich ziehen, um den notwendigen Anforderungen der Direktive 97/23/EC (Pressure Equipment Directive (PED)) zu genügen.
ANMERKUNG 2 Für µKWK-Geräte mit einer Bauart, die nicht vollständig durch diese Norm oder eine andere spezielle Norm abgedeckt sind, muss das Risiko durch die alternative Bauart abgeschätzt werden.
Dieser Entwurf gilt nur für Typenprüfungen.
Dieser Entwurf enthält keine Anforderungen an Geräte, die elektrische Energie ohne Nutzung der thermischen Energie erzeugen.
Appareils fonctionnant au gaz - Appareils produisant de la chaleur et de l’électricité combinées dont le débit calorifique nominal est inférieur ou égal à 70 kW
La présente Norme européenne spécifie les exigences et méthodes d’essai relatives à la construction, la sécurité, l’aptitude aux conditions d’emploi, l’utilisation rationnelle de l’énergie et le marquage des appareils produisant de la chaleur et de l’électricité combinées (ici appelés « appareils mCHP »).
La présente Norme européenne s’applique aux appareils mCHP de types B22, B23, B32, B33, B52, B53, C1, C3, C4, C5, C6 et C8 selon le CEN/TR 1749
utilisant un ou plusieurs gaz combustibles composant les trois familles de gaz, aux pressions établies dans l’EN 437,
dont la température du fluide caloporteur ne dépasse pas 105 ºC en fonctionnement normal,
dont la pression de fonctionnement maximale dans le :
circuit d’eau de chauffage ne dépasse pas 6 bar,
circuit d’eau chaude sanitaire (si installé) est de 10 bar au maximum,
pouvant générer de la condensation dans certaines circonstances,
étant déclarés par le fabricant comme étant des « appareils à condensation »,
dont l’installation est prévue dans un endroit partiellement protégé,
destinés à produire de l'eau chaude instantanée ou par accumulation,
dont le débit calorifique maximal (en fonction du pouvoir calorifique inférieur) ne dépasse pas 70 kW,
étant conçus pour les systèmes à circuit d’eau fermé ou ouvert.
Plinske naprave - Kombinirane ogrevalne in pogonske naprave z imensko močjo do vključno 70 kW
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50465:2015
01-junij-2015
1DGRPHãþD
SIST EN 50465:2009
3OLQVNHQDSUDYH.RPELQLUDQHRJUHYDOQHLQSRJRQVNHQDSUDYH]LPHQVNRPRþMR
GRYNOMXþQRN:
Gas appliances - Combined heat and power appliance of nominal heat input inferior or
equal to 70 kW
Gasgeräte - Geräte zur Kraft-Wärme-Kopplung mit einer Nennwärmebelastung kleiner
oder gleich 70 kW
Appareils fonctionnant au gaz - Appareils produisant de la chaleur et de l’électricité
combinées dont le débit calorifique nominal est inférieur ou égal à 70 kW
Ta slovenski standard je istoveten z: EN 50465:2015
ICS:
27.070 Gorilne celice Fuel cells
97.100.99 Grelniki, ki uporabljajo druge Heaters using other sources
vire energije of energy
SIST EN 50465:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 50465:2015
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SIST EN 50465:2015
EUROPEAN STANDARD EN 50465
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2015
ICS 27.070; 97.100.20 Supersedes EN 50465:2008
English Version
Gas appliances - Combined heat and power appliance of
nominal heat input inferior or equal to 70 kW
Appareils à gaz - Appareils produisant de la chaleur et de Gasgeräte - Geräte zur Kraft-Wärme-Kopplung mit einer
l'électricité combinées dont le débit calorifique nominal est Nennwärmebelastung kleiner oder gleich 70 kW
inférieur ou égal à 70 kW
This European Standard was approved by CENELEC on 29 October 2014. CEN and CENELEC 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 and CENELEC 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 and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre
has the same status as the official versions.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, Turkey and United Kingdom
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 All rights of exploitation in any form and by any means reserved worldwide for CEN national Members and for
CEN/CENELEC CENELEC Members.
Ref. No. EN 50465:2015 E
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SIST EN 50465:2015
EN 50465:2015 – 2 –
Contents
Foreword . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 11
4 Classification . 26
4.1 Gases/Categories . 26
4.2 Mode of air supply and evacuation of combustion products . 26
4.3 Maximum water side operating pressure . 28
4.4 Expansion system . 28
5 Constructional requirements . 28
5.1 General construction . 28
5.2 Use and servicing . 30
5.3 Connections to the gas and water pipes . 30
5.4 Soundness . 31
5.5 Supply of air and evacuation of combustion products . 32
5.6 Requirements for a fan incorporated in a mCHP appliance . 33
5.7 Gas/air ratio controls . 33
5.8 Air proving . 34
5.9 Checking the state of operation . 35
5.10 Operational safety in the event of failure of the energy supply for the control systems . 35
5.11 Drainage . 35
5.12 Conversion to different gases . 35
5.13 Materials and thickness. 36
5.14 Thermal insulation . 42
5.15 Durability against corrosion of metallic combustion product circuits . 42
5.16 Requirements for valves as parts of the gas circuit . 43
5.17 Combustion products evacuation duct . 44
5.18 Design . 44
5.19 Gas carrying circuit . 45
5.20 Electrical equipment . 47
5.21 Requirements for adjusting, control and safety devices . 48
5.22 Burners . 54
6 Operational requirements . 54
6.1 General requirements . 54
6.2 Soundness . 55
6.3 Heat input and heat and electrical output . 58
6.4 Safety of operation (temperature / limit gas) . 58
6.5 Start / Release and adjusting, control and safety devices (if applicable) . 63
6.6 Efficiency . 68
6.7 Operation . 68
6.8 Combustion . 68
6.9 Resistance of materials to pressure . 69
6.10 Hydraulic resistance . 70
6.11 Formation of condensate . 70
6.12 Designation and measurement of reference temperatures of flue systems . 70
6.13 Mechanical resistance and stability of ducts, terminal and fitting pieces . 71
6.14 Requirements for plastic in the combustion product evacuation ducts, terminals and fitting
pieces for mCHP appliances . 71
6.15 Requirements for elastomeric seals and elastomeric sealants in the combustion product
evacuation ducts, terminals and fitting pieces . 75
6.16 Special provisions for mCHP appliances intended to be installed in a partially protected
place . 77
7 Test methods . 77
7.1 General test conditions . 77
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SIST EN 50465:2015
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7.2 Soundness . 86
7.3 Heat input and heat and electrical output . 90
7.4 Safety of operation . 92
7.5 Start / Release and adjusting, control and safety devices . 107
7.6 Efficiency . 112
7.7 Operation . 120
7.8 Combustion . 120
7.9 Resistance of the materials to pressure . 126
7.10 Hydraulic resistance . 126
7.11 Formation of condensate . 127
7.12 Designation and measurement of reference temperatures of flue systems . 128
7.13 Mechanical resistance and stability of ducts, terminal and fitting pieces . 128
7.14 Requirements for plastic in the combustion product evacuation ducts, terminals and fitting
pieces for mCHP appliances . 129
7.15 Tests for elastomeric seals and elastomeric sealants in the combustion product
evacuation ducts, terminals and fitting pieces . 132
7.16 Special provisions for mCHP appliances intended to be installed in a partially protected
place . 134
8 EMC / electrical requirements . 134
8.1 Relevant for the Gas safety . 134
8.2 Relevant for the Electrical safety related to the grid with indirect effect to gas safety . 134
8.3 Relevant for the EMC . 134
9 Marking, installation and operating instructions . 135
9.1 mCHP appliance marking . 135
9.2 Installation instructions . 138
9.3 Operating instructions (i.e. users’ instructions) . 141
9.4 Conversion instructions . 142
9.5 Presentation . 142
Annex A (informative) Different gas connections in common use in the various countries . 143
Annex B (informative) Classification of type B and type C mCHP appliances . 144
Annex C (informative) Composition of the gas circuit . 149
Annex D (informative) Practical method of calibrating the test rig to enable the heat loss D to
p
be determined . 151
Annex E (informative) A-deviations . 152
Annex F (informative) Main symbols and abbreviations used . 153
Annex G (informative) Examples for marking . 154
Annex H (informative) Calculation of conversions of NO . 155
x
Annex I (informative) Test rig for the measurement of the stand-by heat losses . 156
Annex CC (normative) Test methods to determine the effects of long-term thermal load, long-
term condensate exposure, condensing/ non- condensing cycling and resistance to UV
radiation . 158
Annex DD (informative) Variations in gas quality . 159
Annex EE (informative) Calculation of the efficiency for ErP . 164
Annex ZZ (informative) Coverage of Essential Requirements of EU Directives . 167
Bibliography . 170
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SIST EN 50465:2015
EN 50465:2015 – 4 –
Figures
Figure 1 – Typical set-up for a fuel cell mCHP appliance . 15
Figure 2 – Typical set-up for a Stirling engine mCHP appliance . 15
Figure 3 – Typical set-up for an internal combustion engine mCHP appliance . 16
Figure 4 – Example of a sampling probe for the measurement of the products of combustion . 79
Figure 5 – Example of the location of the probe for a C type appliance . 80
Figure 6 – Test rig for the soundness of the gas carrying circuit . 85
Figure 7 – Test rig for the soundness of components (pressure drop method) . 86
Figure 8 – Test rig for thermostats: short cut circulation . 94
Figure 9 – Test rig for thermostats with heat exchanger . 95
Figure 10 – Test rig for type C appliances, equipped with horizontal wind protection device at a
1
vertical wall . 99
Figure 11 – Test rig for type C appliances for installation in buildings with tilted roof . 100
1
Figure 12 – Test rig for type C and C appliances for installation in flat roofed buildings . 101
3 9
Figure 13 – Test rig for type C and C appliances for installation in buildings with tilted roof . 102
3 9
Figure 14 – Measuring points for the stand-by heat losses . 114
Figure 15 – Test rig for the determination of hydraulic resistance . 127
Figure B.1 – Type B . 144
2
Figure B.2 – Type B . 144
3
Figure B.3 – Type C . 145
1
Figure B.4 – Type C . 145
3
Figure B.5 – Type C . 146
4
Figure B.6 – Type C . 146
5
Figure B.7 – Type C . 147
6
Figure B.8 – Type C . 147
8
Figure B.9 – Type C . 148
9
Figure C.1 – Automatic gas shut off valves in the gas supply line for mCHP appliances . 149
Figure C.2 – Automatic gas shut off valves in the gas supply line for permanent or alternating mCHP
appliances . 150
Figure I.1 – Test rig . 156
Figure DD.1 – The relation between the (extreme) limit gases (ELG), the reference gas (RG) and the
normal distribution gas (NDG) the appliance is designed for. The current standard assumes
that the normal distribution is close to the reference gas . 160
Figure DD.2 – The relation between the (extreme)limit gases (ELG), the reference gas (RG), the
distribution limit gases (DLG),and the normal distribution gas(NDG) the appliance is designed
for. The DLG are to be considered if the normal distribution gas may vary to a large extent over
the lifetime of the appliance. 162
Figure EE.1 – Equivalent heating efficiency and linear extrapolation from = 0,75/CC. . 165
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SIST EN 50465:2015
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Tables
Table 1 – Mechanical properties and chemical compositions of carbon and stainless steels . 37
Table 2 – Minimum requirements for cast iron. 37
Table 3 – Parts in aluminium and aluminium alloys . 38
Table 4 – Parts in copper or copper alloys . 38
Table 5 – Minimum thicknesses for rolled parts . 38
Table 6 – Nominal minimum thicknesses of mCHP appliance sections . 38
Table 7 – Weld joints and welding processes . 39
Table 8 – Metallic combustion products circuit material specifications . 43
Table 9 – Composition of the gas circuit . 47
Table 10 – Maximum admissible leakage rates . 56
Table 11 – NO classes . 69
x
Table 12 – Criteria for testing long-term resistance to thermal load . 72
Table 13 – Criteria for testing long-term resistance to condensate exposure . 73
Table 14 – Criteria for testing resistance to condensing/non-condensing cycling . 74
Table 15 – Group sizes of internal flue diameters . 74
Table 16 – Criteria for testing long-term resistance to thermal load . 75
Table 17 – Criteria for testing-long term resistance to condensate exposure . 76
Table 18 – Weighting factor for weighting in the calculation* . 116
Table 19 – (CO ) concentration of the combustion products, in percent . 120
2 N
Table 20 – Weighting factors . 124
Table 21 – Weighting factors . 125
Table 22 – Exposure time in weeks at raised temperatures . 130
Table 23 – Composition of test condensate for corrosion . 130
Table 24 – Condensate composition, related to construction classes . 132
Table 25 – Supplementary markings . 137
Table A.1 – Gas connections conditions in common use in the various countries . 143
Table F.1 – Main symbols and abbreviations used . 153
Table G.1 – Category(ies), direct and indirect country(ies) of destination . 154
Table G.2 – Example 1: Possibilities for the second gas family . 154
Table G.3 – Example 2: Possibilities for the third gas family . 154
Table H.1 – Conversion of the emission value of NO for second family gases . 155
x
Table H.2 – Conversion of the emission value of NOx for third family gases . 155
Table EE.1 – Energy outputs and primary energy inputs. . 164
Table ZZ.1 – Clauses of this European Standard addressing essential requirements or other
provisions of EC Directives . 167
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SIST EN 50465:2015
EN 50465:2015 – 6 –
Foreword
This document (EN 50465:2015) has been prepared by CEN/CLC Joint Working Group FCGA, "Fuel cell
gas appliances".
The following dates are fixed:
• latest date by which this document has to be
(dop) 2015-10-29
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards conflicting
(dow) 2017-10-29
with this document have to be withdrawn
This document supersedes EN 50465:2008.
EN 50465:2015 includes the following significant technical changes with respect to EN 50465:2008:
– inclusion of requirements for „Stirling Engine“ and „Internal Combustion Engine“;
– modification of requirements for fuel cell heating appliances to reflect experience since the first
edition;
– partly adaptation to EN 15502-1 and EN 15502-2-1, especially to reflect the new requirements for air
proving devices;
– introduction of additional types of combustion air and flue duct systems;
– modification of the total efficiency calculation;
– modifications of NO weighting and calculation.
X
Micro-cogeneration is also known as micro combined heat and power [mCHP]. mCHP is an efficient way
to deliver heating, cooling and electricity. It is based on the simultaneous production of electrical and
thermal energy, both of which are used. The central and most fundamental principle of mCHP is that in
order to maximize the many benefits that arise from it, systems should be based according to the heat
demand of the application.
A fuel cell, Stirling engine and internal combustion engine are just some of the significant technologies to
be the thermal heart of a mCHP appliance.
mCHP appliances that are already established in the market are used to provide central heating and
domestic hot water in residential buildings.
Due to the development of new technology other solutions than those described in this European
Standard are possible if these solutions provide at least an equivalent level of safety.
Matters related to quality assurance systems, tests during production, and certificates of conformity of
auxiliary devices are not dealt with in this European Standard.
Due to the change in scope to include technologies in addition to fuel cells, the title of this European
Standard has been changed from “fuel cell gas heating appliance” into “combined heat and power
appliance”.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
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SIST EN 50465:2015
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This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.The essential requirements of EC Directive 2009/142/EC relating to "rational use of energy" is
defined by the maximum quantity of energy recovered (thermal and electrical energy output) from the gas
energy input.
__________
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SIST EN 50465:2015
EN 50465:2015 – 8 –
1 Scope
This European Standard specifies the requirements and test methods for the construction, safety, fitness
for purpose, rational use of energy and the marking of a micro combined heat and power appliance;
(hereafter referred to as “mCHP appliance”).
This European Standa
...
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