1、BS EN 12976-2:2017Thermal solar systems andcomponents Factory madesystemsPart 2: Test methodsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 12976-2:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12976-2:2017. It supe
2、rsedes BS EN 12976-2:2006 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RHE/25, Solar Heating.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the neces
3、sary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 86105 5 ICS 27.160 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was
4、 published under the authority of the Standards Policy and Strategy Committee on 31 January 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 12976-2:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12976-2 January 2017 ICS 27.160 Supersedes EN 12976-2:2006
5、English Version Thermal solar systems and components - Factory made systems - Part 2: Test methods Installations solaires thermiques et leurs composants -Installations prfabriques en usine - Partie 2 : Mthodes dessai Thermische Solaranlagen und ihre Bauteile - Vorgefertigte Anlagen - Teil 2: Prfverf
6、ahren This European Standard was approved by CEN on 15 April 2016. 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
7、 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
8、 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, Former Yugoslav Republic of Mac
9、edonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALIS
10、ATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12976-2:2017 EBS EN 12976-2:2017EN 12976-2:2017 (E) 2 Contents Page European
11、 foreword . 6 Introduction 8 1 Scope . 10 2 Normative references . 10 3 Terms and definitions 10 4 Symbols and abbreviations 10 5 Testing 11 5.1 Freeze resistance 11 5.1.1 General . 11 5.1.2 Systems using antifreeze fluid . 11 5.1.3 Drain-back systems . 11 5.1.4 Drain-down systems . 12 5.1.5 Freeze
12、protection and combined control functions 12 5.1.6 Other systems 12 5.2 Over temperature protection 13 5.2.1 Purpose 13 5.2.2 Apparatus 13 5.2.3 Procedure 13 5.2.4 Reporting requirements 14 5.3 Pressure resistance . 14 5.3.1 Purpose 14 5.3.2 Apparatus 14 5.3.3 Safety precaution . 15 5.3.4 Procedure
13、15 5.3.5 Reporting requirements 16 5.4 Water contamination 16 5.5 Testing the resistance against mechanical load . 17 5.5.1 Purpose 17 5.5.2 Apparatus 17 5.5.3 Safety precaution . 17 5.5.4 Calculation procedure for the mechanical load 18 5.5.5 Procedure 20 5.5.6 Reporting requirements 20 5.6 Lightni
14、ng protection . 21 5.7 Safety equipment 21 5.7.1 Safety valves . 21 5.7.2 Safety lines and expansion lines . 22 5.7.3 Blow-off lines . 22 5.8 Labelling 22 5.9 Thermal performance characterization 22 5.9.1 Introduction . 22 5.9.2 Test procedure 23 5.9.3 Prediction of yearly performance indicators . 2
15、4 5.10 Ability of solar-plus-supplementary systems to cover the load 31 BS EN 12976-2:2017EN 12976-2:2017 (E) 3 5.10.1 General . 31 5.10.2 Boundary conditions for auxiliary heating . 31 5.10.3 Boundary conditions for daily load 32 5.10.4 Determination of the ability to cover the maximum daily load b
16、y means of testing the system 33 5.10.5 Determination of the ability to cover the maximum daily load by means of numerical simulations 33 5.10.6 Determination of the ability to cover the daily load defined by the European load profiles by means of numerical simulations . 33 5.10.7 Requirements for m
17、ixed water at 40 C . 34 5.11 Reverse flow protection . 36 5.12 Electrical safety . 36 Annex A (normative) Thermal performance presentation sheet 37 Annex B (normative) Reference conditions for performance prediction . 39 B.1 General . 39 B.2 Pipe diameter and insulation thickness . 42 B.3 Calculatio
18、n of cold water temperature at reference location 43 B.4 Additional set of reference conditions for annual performance calculations 44 B.5 Reference conditions for the performance of the auxiliary heater 47 Annex C (informative) Assessment of the ability of solar DHW systems to resist the extreme cl
19、imatic conditions . 48 C.1 Indoor and outdoor test procedure for assessment of the frost resistance of solar DWH systems with outdoor storage tank or system using heat transfer fluid with the risk of freezing . 48 C.1.1 Objective and applicability 48 C.1.2 Apparatus and mounting of the system 48 C.1
20、.3 Test procedure 49 C.1.4 Test conditions Determination of the test conditions for freezing period . 50 C.1.5 Results 50 C.2 Indoor test procedure for assessment of the reliability of solar DWH systems in respect of overheating protection 51 C.2.1 Objective and applicability 51 C.2.2 Apparatus and
21、mounting of the system 51 C.2.3 Test procedure 53 C.2.4 Test conditions 53 C.2.5 Results 55 Annex D (informative) Ageing test for thermostatic valves . 57 D.1 General . 57 D.2 Test arrangement . 57 D.3 Test Procedure 58 D.4 Results 59 Annex E (informative) Lightning protection test for solar heating
22、 systems 60 E.1 Field of application. 60 E.2 Purpose 60 E.3 Requirements . 60 E.4 Apparatus 61 E.5 Test procedure 61 E.5.1 Test conditions 61 E.5.2 Solar heating system installation 61 E.5.3 Separation distance St. 61 BS EN 12976-2:2017EN 12976-2:2017 (E) 4 E.5.4 Size of the bonding cable or strip .
23、 61 E.5.5 Bridging between tank and supports . 61 E.5.6 Bridging between collectors and supports . 62 E.5.7 Bridging between collectors and tank 62 E.5.8 Connecting terminal with Lightning Protection System (LPS) 62 E.5.9 Metal sheets covering parts of the solar heating system . 62 E.5.10 Heating ef
24、fects due to lightning currents 62 E.5.11 Mechanical durability due to lightning mechanical loads . 62 E.6 Report . 62 E.7 Conclusions. 62 Annex F (informative) Lightning Protection testing sheet . 63 Annex G (normative) Reporting format in the framework of the EU Regulations CDR 811, 812 and 814 da
25、ted 2013 67 Annex ZA (informative) Relationship between this European Standard and the energy labelling requirements of Commission Delegated Regulation (EU) No 811/2013 aimed to be covered 68 Annex ZB (informative) Relationship between this European Standard and the energy labelling requirements of
26、Commission Delegated Regulation (EU) No 812/2013 aimed to be covered 70 Annex ZC (informative) Relationship between this European Standard and the ecodesign requirements of Commission Regulation (EU) No 814/2013 aimed to be covered . 73 Bibliography . 75 Tables Table 1 Division for factory made and
27、custom built solar heating systems . 9 Table 2 Selection of the performance test method . 23 Table 3 Parameter a values for different load volumes 23 Table 4 Daily heat demand for load profiles . 28 Table 5 Adjustment factors . 30 Table 6 Load profile selection 30 Table A.1 Presentation of the syste
28、m performance indicators for solar-plus-supplementary systems . 37 Table A.2 Presentation of the system performance indicators for solar-only and solar preheat systems 38 Table B.1 Reference conditions for performance presentation . 40 Table B.2 Pipe diameter and insulation thickness for forced-circ
29、ulation systems 42 Table B.3 Pipe diameter and insulation thickness for thermosiphon systems 42 Table B.4 Data for calculation of the cold water temperature at the reference locations 43 Table B.5 Reference conditions for performance presentation limited to the deviations from Table B.1 . 44 Table B
30、.6 Monthly and average annual reference outside air temperatures for two climate zones in C . 46 BS EN 12976-2:2017EN 12976-2:2017 (E) 5 Table B.7 Monthly and average annual reference solar irradiation for two climate zones in kWh/m . 46 Table B.8 Specifications of the average and colder climate hou
31、rly data file according to Meteonorm 46 Table B.9 Reference conditions the performance of the auxiliary heater, limited to the deviations from Table B.1 47 Table C.1 Test conditions 50 Table F.1 Size of bonding cable . 63 Table F.2 Size of metal cover sheets 63 Table F.3 Lightning protection testing
32、 sheet . 64 Table ZA.1 Correspondence between this European Standard and Commission Delegated Regulation (EU) No 811/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to energy labelling of space heaters, combination heaters, packag
33、es of space heaters, temperature control and solar device and packages of combination heater, temperature control and solar device and Commissions standardisation request M/535/C(2015) 2626 . 69 Table ZB.1 Correspondence between this European Standard and Commission Delegated Regulation (EU) No 812/
34、2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to energy labelling of water heaters, hot water storage tanks and packages of water heater and solar device and Commissions standardisation request M/534/C(2015) 2625 . 70 Table ZC.1
35、 Correspondence between this European Standard and Commission Regulation (EU) No 814/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for water heaters and hot water storage tanks and Commissions standardisat
36、ion request M/534/C(2015) 2625 74 Figures Figure 1 Dimensions of the system to be measured . 18 Figure 2 Force orthogonal to surface of system Side view 19 Figure 3 Energy balance for one-store solar-plus-supplementary systems (example) . 25 Figure 4 Energy balance for solar-only systems . 26 Figure
37、 5 Energy balance for solar preheat systems 27 Figure A.1 Thermal performance presentation sheet 37 Figure C.1 Scheme of the test set-up . 52 Figure D.1 Test arrangement for thermostatic valve test . 58 BS EN 12976-2:2017EN 12976-2:2017 (E) 6 European foreword This document (EN 12976-2:2017) has bee
38、n 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 July 2017, and confli
39、cting national standards shall be withdrawn at the latest by July 2017. 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
40、supersedes EN 12976-2:2006. 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 Annexes ZA, ZB or ZC, which are
41、an integral part of this document. Most significant changes in EN 12976-1:2017 and EN 12976-2:2017 since the 2006 editions of both parts: The first edition of the EN 12976 series was published in 2000. The standard series provided an important basis for the assessment of the performance as well as t
42、he reliability and durability of Factory made solar thermal systems. In the past 15 years or so, several important technological developments and changes of the framework conditions, such as e.g. the aspect of requiring “Energy Labelling”, the EN 12976 series underwent several important changes. The
43、 following modifications are the most important ones that have been implemented in this new edition of EN 12976-2: main changes related to ErP and the new mechanical load test; Annex ZA (new): harmonisation with Regulation (EC) No 811/2013; Annex ZB (new): harmonisation with Regulation (EC) No 812/2
44、013: Annex ZC (new): harmonisation with Regulation (EC) No 814/2013. It is worth to notice that, based on these changes and developments, the need for the elaboration of a future strategy of the structure of the EN 12976 series is foreseen. EN 12976, Thermal solar systems and components Factory made
45、 systems, is currently composed with the following parts: Part 1: General requirements; Part 2: Test methods. BS EN 12976-2:2017EN 12976-2:2017 (E) 7 According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this Europea
46、n Standard: 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, Serbia, Slovakia
47、, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12976-2:2017EN 12976-2:2017 (E) 8 Introduction Drinking water quality: In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard: a) this
48、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 characteristi
49、cs of this product remain in force. Factory Made and Custom Built solar heating systems: The standards EN 12976-1, EN 12976-2, EN 12977-1, EN 12977-2, EN 12977-3, EN 12977-4 and EN 12977-5 distinguish two categories of solar heating systems: Factory Made solar heating systems and Custom Built solar heating systems. The classification of a system as Factory Made or Custom Built is a choice of the final supplier, in accordance with the following definitions: Factory Made solar heating
