EN 12975:2022

SLOVENSKI STANDARD
01-julij-2022
Nadomešča:
SIST EN 12975-1:2006+A1:2011
Sprejemniki sončne energije - Splošne zahteve
Solar collectors - General requirements
Kollektoren - Allgemeine Anforderungen
Capteurs solaires - Exigences générales
Ta slovenski standard je istoveten z: EN 12975:2022
ICS:
27.160 Sončna energija Solar energy engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12975
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2022
EUROPÄISCHE NORM
ICS 27.160 Supersedes EN 12975-1:2006+A1:2010
English Version
Solar collectors - General requirements
Capteurs solaires - Exigences générales Sonnenkollektoren - Allgemeine Anforderungen
This European Standard was approved by CEN on 31 January 2022.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12975:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols and abbreviations . 6
5 Requirements . 6
5.1 General. 6
5.2 Tests . 7
5.3 Documentation . 7
5.4 Performance indicators . 7
5.5 Recommended tests . 7
5.5.1 Pressure drop . 7
5.5.2 Fire safety . 7
6 Documentation and labelling . 8
6.1 Drawings and data sheets . 8
6.2 Labelling . 8
6.3 Installation instruction . 8
Annex A (normative) Conversion of test results according to earlier standards . 10
A.1 Conversion of test results . 10
A.2 Reference table for EN ISO 9806:2013 and EN 12975-2:2006 . 10
A.3 Performance parameters of collectors tested under EN ISO 9806:2013 . 11
A.4 Performance parameters for collectors tested under EN 12975-2:2006 . 12
Annex B (normative) Solar collector performance rating . 13
B.1 Gross Yield calculation . 13
B.1.1 Introduction . 13
B.1.2 Gross Thermal Yield GTY(ϑ ,Loc) . 13
op
B.1.3 Gross Electric Yield GEY(ϑ ,Loc) . 13
op
B.1.4 Gross Solar Yield GSY(ϑ ,Loc) . 14
op
B.2 European climatic reference conditions . 14
Annex C (normative) Solar collector families and design tolerances . 19
C.1 Collector families . 19
C.1.1 General. 19
C.1.2 General family concept . 19
C.1.3 Size families . 19
C.1.4 Collector glass thickness families . 20
C.2 Design tolerances . 20
C.2.1 General . 20
C.2.2 Coloured frames . 20
C.2.3 Riser distances . 20
C.2.4 Header tube diameters . 20
Annex D (normative) Solar collector retesting guideline . 21
Annex E (normative) Reaction to fire testing . 22
E.1 General . 22
E.2 Standard EN 13823 (Single burning item test) . 22
E.3 Standard EN ISO 11925-2 (Single flame source test) . 22
E.4 Field of direct application. 22
Annex F (normative) External fire exposure to roofs testing . 23
F.1 General . 23
F.2 Field of direct application. 23
Bibliography . 24

European foreword
This document (EN 12975:2022) has been prepared by Technical Committee CEN/TC 312 “Thermal
solar systems and components”, the secretariat of which is held by NQIS/ELOT.
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 September 2022, and conflicting national standards
shall be withdrawn at the latest by December 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12975-1:2006+A1:2010.
In comparison with the previous edition, the following technical modifications have been made:
— the references to the underlying testing standard EN ISO 9806 were updated;
— the gross yield concept is introduced;
— the concept for families of similar collectors is introduced.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
1 Scope
This document is applicable to all types of fluid heating solar collectors. This document specifies
performance requirements for fluid heating solar collectors with respect to durability, reliability, safety
and thermal performance.
This document deals with the solar collector and not with assemblies. This document is not applicable
to those devices in which a thermal storage unit is an integral part to such an extent that the collection
process cannot be separated from the storage process for making the collector thermal performance
measurements.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 ISO 9488, Solar energy - Vocabulary (ISO 9488)
EN ISO 9806:2017, Solar energy - Solar thermal collectors - Test methods (ISO 9806:2017)
EN 13501-1:2018, Fire classification of construction products and building elements - Part 1:
Classification using data from reaction to fire tests
EN 13501-5, Fire classification of construction products and building elements - Part 5: Classification
using data from external fire exposure to roofs tests
EN 13823, Reaction to fire tests for building products - Building products excluding floorings exposed to
the thermal attack by a single burning item
EN ISO 11925-2, Reaction to fire tests - Ignitability of products subjected to direct impingement of flame -
Part 2: Single-flame source test (ISO 11925-2)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 9488, EN ISO 9806 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
Gross Thermal Yield
GTY(ϑ ,Loc)
op
thermal energy yield of a collector for the operating temperature ϑ and the ambient conditions Loc
op
3.2
Gross Electric Yield
GEY(ϑ ,Loc)
op
electric energy yield of a collector for the operating temperature ϑ and the ambient conditions Loc
op
3.3
Gross Solar Yield
GSY(ϑ ,Loc)
op
total energy yield of a collector for the operating temperature ϑ and the ambient conditions Loc
op
4 Symbols and abbreviations
For the purposes of this document, the following symbols and abbreviations apply.
...