EN 12975-1:2006

SLOVENSKI STANDARD
01-maj-2006
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Thermal solar systems and components - Solar collectors - Part 1: General
Requirements
Thermische Solaranlagen und ihre Bauteile - Kollektoren - Teil 1: Allgemeine
Anforderungen
Installations solaires thermiques et leurs composants - Capteurs solaires - Partie 1 :
Exigences générales
Ta slovenski standard je istoveten z: EN 12975-1:2006
ICS:
27.160 6RQþQDHQHUJLMD Solar energy engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 12975-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2006
ICS 27.160 Supersedes EN 12975-1:2000
English Version
Thermal solar systems and components - Solar collectors - Part
1: General Requirements
Installations solaires thermiques et leurs composants - Thermische Solaranlagen und ihre Bauteile - Kollektoren -
Capteurs solaires - Partie 1 : Exigences générales Teil 1: Allgemeine Anforderungen
This European Standard was approved by CEN on 6 February 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, 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
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12975-1:2006: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Introduction.4
1 Scope.5
2 Normative references.5
3 Terms and definitions.5
4 Symbols and units .5
5 Durability and reliability.5
5.1 Materials and design.5
5.2 Required tests.5
5.3 Pass criteria.6
5.3.1 General.6
5.3.2 Internal pressure for absorber .7
5.3.3 High temperature resistance.7
5.3.4 Exposure.7
5.3.5 External thermal shock.7
5.3.6 Internal thermal shock.7
5.3.7 Rain penetration.7
5.3.8 Mechanical load test.7
5.3.9 Thermal performance.8
5.3.10 Freeze resistance test.8
5.4 Procedure.8
6 Safety.8
7 Collector identification.8

7.1 Drawings and data sheet.8
7.2 Labelling.9
7.3 Installer instruction manual.9
Annex A (informative) Description of solar collectors materials and manufacture .10
A.1 General.10
A.2 Absorbers.10
A.3 Transparent covers.11
A.4 Insulation materials.11
A.5 Reflectors.11

A.6 Diffusion barriers.11
Annex B (informative) Environmental protection .12
B.1 Heat transfer fluid.12
B.2 Insulation materials.12
B.3 Recycling of the collector materials.12
Annex C (informative) Tests to be repeated in collector design modifications.13
Bibliography.14

Foreword
This European Standard (EN 12975-1:2006) has been prepared by Technical Committee CEN/TC 312
“Thermal solar systems and components”, the secretariat of which is held by 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 2006, and conflicting national standards shall be
withdrawn at the latest by September 2006.
This European Standard supersedes EN 12975-1:2000.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, 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.
Introduction
In respect of potential adverse effects on the quality of water intended for human consumption, caused by the
product covered by this standard, it is pointed out that:
a) This standard provides no information as to whether the product may be used without restriction
in any of the Member States of the EU or EFTA;

b) It should be noted that, while awaiting the adoption of verifiable European criteria, existing
national regulations concerning the use and/or the characteristics of this product remain in force.
1 Scope
This European Standard specifies requirements on durability (including mechanical strength), reliability and
safety for liquid heating solar collectors. It also includes provisions for evaluation of conformity to these
requirements.
It is not applicable to those collectors in which the thermal storage unit is an integral part of the collector to
such an extent, that the collection process cannot be separated from the storage process for the purpose of
making measurements of these two processes. It is not applicable to tracking concentrating solar collectors.
Collectors that are custom-built (built in, roof integrated collectors that do not comprise factory made modules
and are assembled directly on the place of installation) cannot be tested in their actual form for durability,
reliability and thermal performance according to this standard. Instead, a module with the same structure as
the ready collector is tested. The module gross area in the case of custom built collectors should be at least 2
m . The test is valid only for larger collectors, than the tested module.
For collectors the national and European Guidelines for Structural Planning and overhead glazing are not valid.
Therefore this standard should be applied for the design of the static of the collector.
2 Normative references
The following referenced documents are indispensable for the application of this European Standard. For
dated references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

EN 12975-2:2006, Thermal solar systems and components – Solar collectors – Part 2: Test methods
EN ISO 9488, Solar energy – Vocabulary (ISO 9488:1999)
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN ISO 9488 apply.
4 Symbols and units
For the purposes of this European Standard, the symbols and units given in EN ISO 9488 and
EN 12975-2:2006 apply.
5 Durability and reliability
5.1 Materials and design
Information about the materials and manufacture of solar collectors, including the materials they are
manufactured of and their resistance to all influences which they might meet in service, retaining their
operational ability are given in Annex A.
5.2 Required tests
The collector shall be subjected to the following series of tests:
a) Internal pressure for absorber (see 5.2 of EN 12975-2:2006);
b) High temperature resistance (see 5.3 of EN 12975-2:2006);
c) Exposure (see 5.4 of EN 12975-2:2006);
d) External thermal shock. May be combined with the high temperature resistance or exposure test (see
5.5 of EN 12975-2:2006);
e) Internal thermal shock. May be combined with the high temperature resistance or exposure test (see
5.6 of EN 12975-2:2006);
f) Rain penetration, only for glazed collectors (see 5.7 of EN 12975-2:2006);
g) Mechanical load (see 5.9 of EN 12975-2:2006);
h) Thermal performance (see Clause 6 of EN 12975-2:2006);
i) Freeze resistance, only in the cases specified in 5.8 of EN 12975-2:2006;
j) Stagnation temperature (see Annex C of EN 12975-2:2006). May be combined with the high
temperature resistance or exposure test.
k) Final inspection (see 5.11 of EN 12975-2:2006).
The optional test for impact resistance (see 5.10 of EN 12975-2:2006) shall be carried out if requested. The
result shall be recorded.
NOTE Regarding the durability and reliability of elastic materials it is recommended to refer to ISO 9808 and ISO 9553.
5.3 Pass criteria
5.3.1 General
The pass criteria for the reliability tests are given for each test in 5.3.2 to 5.3.10. The term "no major failure",
denotes that none of the following occurs:
- Absorber leakage or such deformation that permanent contact between absorber and cover is
established;
- Breaking or permanent deformation of cover or cover fixing;
- Breaking or permanent deformation of collector fixing points or collector box;
- Vacuum loss, such that vacuum or subatmospheric collectors shall be classified according to the
definition in EN ISO 9488 (only applicable for vacuum and subatmospheric collectors);
- Accumulation of humidity in form of condensate on the inside of the transparent cover of the
collector exceeding 10 % of the aperture area.
NOTE The evaluation of accumulation of humidity for application of the pass criteria should be applied only on the
following tests :
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