Thermal solar systems and components - Custom built systems - Part 1: General requirements for solar water heaters and combisystems

This European Standard specifies requirements on durability, reliability and safety of small and large custom built solar heating and cooling systems with liquid heat transfer medium in the collector loop for residential buildings and similar applications.
This document also contains requirements on the design process of large custom built systems.

Thermische Solaranlagen und ihre Bauteile - Kundenspezifisch gefertigte Anlagen - Teil 1: Allgemeine Anforderungen an Solaranlagen zur Trinkwassererwärmung und solare Kombianlagen

Diese Europäische Norm legt Anforderungen an die Beständigkeit, Zuverlässigkeit und Sicherheit von kleinen und großen kundenspezifisch gefertigten thermischen Solaranlagen für Heizung und Kühlung mit einem flüssigen Wärmeträgermedium im Kollektorkreis fest, die für den Einsatz in Wohngebäuden und Gebäuden ähnlicher Nutzung vorgesehen sind.
Diese Europäische Norm enthält darüber hinaus Anforderungen an den Entwurf großer kundenspezifisch gefertigter Anlagen.

Installations solaires thermiques et leurs composants - Installations assemblées à façon - Partie 1 : Exigences générales pour chauffe-eau solaires et installations solaires combinées

La présente Norme européenne spécifie les exigences de durabilité, de fiabilité et de sécurité des petites et grandes installations de chauffage et de refroidissement solaires assemblées à façon, à liquide caloporteur dans la boucle de captage, destinées aux bâtiments résidentiels et applications similaires.
La présente Norme européenne contient également des exigences relatives au processus de conception des grandes installations assemblées à façon.

Toplotni sončni sistemi in sestavni deli - Neserijsko izdelani sistemi - 1. del: Splošne zahteve za sončne grelnike vode in kombinirane sisteme

Ta evropski standard določa zahteve za trajnost, zanesljivost in varnost majhnih in velikih neserijsko izdelanih sončnih ogrevalnih in hladilnih sistemov s tekočim sredstvom za prenos toplote v zanki kolektorja za stanovanjske zgradbe in podobne uporabe.
Dokument vsebuje tudi zahteve v zvezi s procesom načrtovanja velikih neserijsko izdelanih sistemov.

General Information

Status
Published
Publication Date
03-Apr-2018
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
04-Apr-2018
Completion Date
04-Apr-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Thermische Solaranlagen und ihre Bauteile - Kundenspezifisch gefertigte Anlagen - Teil 1: Allgemeine Anforderungen an Solaranlagen zur Trinkwassererwärmung und solare KombianlagenInstallations solaires thermiques et leurs composants - Installations assemblées à façon - Partie 1 : Exigences générales pour chauffe-eau solaires et installations solaires combinéesThermal solar systems and components - Custom built systems - Part 1: General requirements for solar water heaters and combisystems91.140.65Oprema za ogrevanje vodeWater heating equipment91.140.10Sistemi centralnega ogrevanjaCentral heating systems27.160Solar energy engineeringICS:Ta slovenski standard je istoveten z:EN 12977-1:2018SIST EN 12977-1:2018en,fr,de01-september-2018SIST EN 12977-1:2018SLOVENSKI

STANDARDSIST EN 12977-1:20121DGRPHãþD
SIST EN 12977-1:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12977-1
April
t r s z ICS
t yä s x râ
{ sä s v rä s râ
{ sä s v rä x w Supersedes EN
s t { y yæ sã t r s tEnglish Version
Thermal solar systems and components æ Custom built systems æ Part

sã General requirements for solar water heaters and combisystems Installations solaires thermiques et leurs composants æInstallations assemblées à façon æ Partie

s ã Exigences générales pour chauffeæeau solaires et installations solaires combinées

Thermische Solaranlagen und ihre Bauteile æ Kundenspezifisch gefertigte Anlagen æ Teil

sã Allgemeine Anforderungen an Solaranlagen zur Trinkwassererwärmung und solare Kombianlagen This European Standard was approved by CEN on

t { October
t r s yä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels

t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s t { y yæ sã t r s z ESIST EN 12977-1:2018

EN 12977-1:2018 (E) 2 Contents Page European foreword ....................................................................................................................................................... 4 Introduction .................................................................................................................................................................... 5 Table 1 — Division for factory made and custom built solar heating systems ....................................... 6 1 Scope .................................................................................................................................................................... 7 2 Normative references .................................................................................................................................... 7 3 Terms and definitions ................................................................................................................................... 8 4 Symbols and abbreviations ...................................................................................................................... 10 5 System classification ................................................................................................................................... 10 5.1 Small custom built systems ...................................................................................................................... 10 Table 2 — Classes of small custom built systems according to their purpose ..................................... 10 5.2 Large custom built systems ...................................................................................................................... 10 Table 3 — Classification of large systems .......................................................................................................... 11 6 Requirements ................................................................................................................................................ 11 6.1 Introduction ................................................................................................................................................... 11 6.2 General ............................................................................................................................................................. 11 6.2.1 Suitability for drinking water .................................................................................................................. 11 6.2.2 Water contamination .................................................................................................................................. 11 6.2.3 Freeze resistance .......................................................................................................................................... 11 6.2.4 High-temperature protection .................................................................................................................. 11 6.2.5 Reverse circulation prevention .............................................................................................................. 12 6.2.6 Pressure resistance ..................................................................................................................................... 12 6.2.7 Electrical safety ............................................................................................................................................. 12 6.3 Materials .......................................................................................................................................................... 12 6.4 Components and pipework ...................................................................................................................... 12 6.4.1 Collector and collector array ................................................................................................................... 12 6.4.2 Supporting frame ......................................................................................................................................... 13 6.4.3 Collector and other loops .......................................................................................................................... 13 6.4.4 Circulation pumps ........................................................................................................................................ 13 6.4.5 Expansion vessels ........................................................................................................................................ 13 6.4.6 Heat exchangers ........................................................................................................................................... 14 6.4.7 Water store(s) ............................................................................................................................................... 14 6.4.8 Pipework ......................................................................................................................................................... 14 6.4.9 Thermal insulation ...................................................................................................................................... 15 6.4.10 Control equipment ....................................................................................................................................... 15 6.5 Safety equipment and indicators............................................................................................................ 15 6.5.1 Safety valves ................................................................................................................................................... 15 6.5.2 Safety lines and expansion lines ............................................................................................................. 15 6.5.3 Blow-off lines ................................................................................................................................................. 16 6.5.4 Store isolation valve .................................................................................................................................... 16 6.5.5 Indicators ........................................................................................................................................................ 16 6.6 Installation ..................................................................................................................................................... 16 6.6.1 Roof tightness ................................................................................................................................................ 16 6.6.2 Lightning ......................................................................................................................................................... 16 6.6.3 Snow and wind loads .................................................................................................................................. 16 SIST EN 12977-1:2018

EN 12977-1:2018 (E) 3 6.7 Initial operation and commissioning .................................................................................................... 16 6.8 Documentation .............................................................................................................................................. 17 6.8.1 General ............................................................................................................................................................. 17 6.8.2 Assortment file for small systems .......................................................................................................... 17 6.8.3 Documentation for small systems .......................................................................................................... 17 6.8.4 Documentation for large systems ........................................................................................................... 18 6.9 System performance .................................................................................................................................... 19 6.10 Water wastage ............................................................................................................................................... 19 Annex A (informative)

Implementation for Ecodesign and Energy labelling ...................................... 20 A.1 Standing loss ................................................................................................................................................... 20 A.2 Nominal store volume ................................................................................................................................. 20 A.3 Volume of the non-solar heat storage ................................................................................................... 20 Annex ZA (informative)

Relationship between this European Standard and the energy labelling requirements of Commission Delegated Regulation (EC) No 811/2013 aimed to be covered ..................................................................................................................................... 21 Table ZA.1 — Correspondence between this European Standard and Commission Delegated Regulation (EC) No 811/2013 of 18th 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, packages of space heaters, temperature control and solar device and packages of combination heater, temperature control and solar device and Commission’s standardization request 'M/535/C(2015) 2626' ............................................................................................................................... 21 Annex ZB (informative)

Relationship between this European Standard and the energy labelling requirements of Commission Delegated Regulation (EC) No 812/2013 aimed to be covered ..................................................................................................................................... 22 Table ZB.1 — Correspondence between this European Standard and Commission Delegated Regulation (EC) No 812/2013 of 18th 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 Commission’s standardization request 'M/534/C(2015) 2625' ................ 22 Annex ZC (informative)

Relationship between this European Standard and the ecodesign requirements of Commission Regulation (EC) No 814/2013 aimed to be covered ............. 23 Table ZC.1 — Correspondence between this European Standard and Commission Regulation (EU/EC) No 814/2013 of 2nd 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 Commission’s standardization request 'M/534/C(2015) 2625' ................................................. 23 Bibliography ................................................................................................................................................................. 24

SIST EN 12977-1:2018

EN 12977-1:2018 (E) 4 European foreword This document (EN 12977-1:2018) 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 October 2018, and conflicting national standards shall be withdrawn at the latest by October 2018. 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 12977-1:2012. This document has been prepared under the Mandate M/534 “Standardisation request to the European standardisation organisations pursuant to Article 10(1) of Regulation (EU) No 1025/2012 of the European Parliament and of the Council in support of implementation of 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 Commission Delegated Regulation (EU) No 812/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of water heaters, hot water storage tanks and packages of water heater and solar device” which was given to CEN by the European Commission and the European Free Trade Association. For relationship with EU Directive(s), see informative Annex ZA, ZB and ZC, which are integral parts of this document. EN 12977 is currently composed with the following parts: — Thermal solar systems and components — Custom built systems — Part 1: General requirements for solar water heaters and combisystems; — Thermal solar systems and components — Custom built systems — Part 2: Test methods for solar water heaters and combisystems; — Thermal solar systems and components — Custom built systems — Part 3: Performance test methods for solar water heater stores; — Thermal solar systems and components — Custom built systems — Part 4: Performance test methods for solar combistores; — Thermal solar systems and components — Custom built systems — Part 5: Performance test methods for control equipment. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom SIST EN 12977-1:2018

EN 12977-1:2018 (E) 5 Introduction a) Drinking water quality In respect of potential adverse effects on the quality of drinking water intended for human consumption caused by the product covered by this document, it should be noted that 1) this document provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA, 2) while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. b) Factory made and custom built solar heating systems EN 12976-1, EN 12976-2, FprEN 12977-1, EN 12977-2, EN 12977-3, EN 12977-4 and EN 12977-5 distinguish two categories of solar heating systems: 1) factory made solar heating systems; and 2) 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. 3) Factory made solar heating systems are batch products with one trade name, sold as complete and ready to install kits, with fixed configurations. Systems of this category are considered as a single product and assessed as a whole. If a factory made solar heating system is modified by changing its configuration or by changing one or more of its components, the modified system is considered as a new system. Requirements and test methods for factory made solar heating systems are given in EN 12976-1 and EN 12976-2. 4) Custom built solar heating systems are either uniquely built or assembled by choosing from an assortment of components. Systems of this category are regarded as a set of components. The components are separately tested and test results are integrated to an assessment of the whole system. Requirements for custom built solar heating systems are given in EN 12977-1, test methods are specified in EN 12977-1, EN 12977-2, EN 12977-3, EN 12977-4 and EN 12977-5. Custom built solar heating systems are subdivided into two categories: i) large custom built systems are uniquely designed for a specific situation. In general, they are designed by HVAC engineers, manufacturers or other experts; ii) small custom built systems offered by a company are described in a so-called assortment file, in which all components and possible system configurations, marketed by the company, are specified. Each possible combination of a system configuration with components from the assortment is considered as one custom built system. Table 1 shows the division for different system types. SIST EN 12977-1:2018

EN 12977-1:2018 (E) 6 Table 1 — Division for factory made and custom built solar heating systems Factory made solar heating systems (EN 12976-1 and EN 12976-2) Custom built solar heating systems (EN 12977-1, EN 12977-2, EN 12977-3, EN 12977-4 and EN 12977-5) Integral collector-storage systems for domestic hot water preparation Forced circulation systems for hot water preparation and/or space heating/cooling, assembled using components and configurations described in a documentation file (mostly small systems) Thermosiphon systems for domestic hot water preparation Forced circulation systems as batch product with fixed configuration for domestic hot water preparation Uniquely designed and assembled systems for hot water preparation and/or space heating/cooling (mostly large systems) NOTE 1 Forced circulation systems can be classified either as factory made or as custom built, depending on the market approach chosen by the final supplier. NOTE 2 Both factory made and custom built systems for domestic hot water preparation are performance tested under the same set of basic reference conditions as specified in EN 12976-2:2017, Annex B and in EN 12977-2:2018, Annex A. In practice, the installation conditions may differ from these reference conditions. NOTE 3 Solar heating systems for both heating and cooling can so far not be performance tested; if the cooling option is not considered, then the solar heating system can be performance tested as a space heating system. SIST EN 12977-1:2018

EN 12977-1:2018 (E) 7 1 Scope This European Standard specifies requirements on durability, reliability and safety of small and large custom built solar heating and cooling systems with liquid heat transfer medium in the collector loop for residential buildings and similar applications. This European Standard also contains requirements on the design process of large custom built systems. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 253, District heating pipes — Preinsulated bonded pipe systems for directly buried hot water networks — Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene EN 307, Heat exchangers - Guidelines to prepare installation, operating and maintenance instructions required to maintain the performance of each type of heat exchangers EN 806-1, Specifications for installations inside buildings conveying water for human consumption - Part 1: General EN 806-2, Specification for installations inside buildings conveying water for human consumption - Part 2: Design EN 809, Pumps and pump units for liquids — Common safety requirements EN 16297-1, Pumps - Rotodynamic pumps - Glandless circulators - Part 1: General requirements and procedures for testing and calculation of energy efficiency index (EEI) EN 1489, Building valves - Pressure safety valves - Tests and requirements EN 1490, Building valves - Combined temperature and pressure relief valves - Tests and requirements EN 1991-1-3, Eurocode 1 - Actions on structures - Part 1-3: General actions - Snow loads EN 1991-1-4, Eurocode 1: Actions on structures - Part 1-4: General actions - Wind actions EN 1993-1-1, Eurocode 3: Design of steel structures - Part 1-1: General rules and rules for buildings EN 1999-1-1, Eurocode 9: Design of aluminium structures — Part 1-1: General structural rules EN 12975-1:2006+A1:2010, Thermal solar systems and components - Solar collectors - Part 1: General requirements EN 12976-1:2017, Thermal solar systems and components - Factory made systems - Part 1: General requirements EN 12977-2:2018, Thermal solar systems and components — Custom built systems — Part 2: Test methods for solar water heaters and combisystems EN 12977-5:2018, Thermal solar systems and components — Custom built systems — Part 5: Performance test methods for control equipment SIST EN 12977-1:2018

EN 12977-1:2018 (E) 8 EN 60335-1, Household and similar electrical appliances — Safety — Part 1: General requirements (IEC 60335-1) EN 60335-2-21, Household and similar electrical appliances - Safety - Part 2-21: Particular requirements for storage water heaters (IEC 60335-2-21) EN ISO 9806:2017, Solar energy - Solar thermal collectors - Test methods (ISO 9806:2017) EN ISO 9488:1999, Solar energy - Vocabulary (ISO 9488:1999) ISO 9459-1:1993, Solar heating — Domestic water heating systems — Part 1: Performance rating procedure using indoor test methods ISO/TR 10217, Solar energy — Water heating systems — Guide to material selection with regard to internal corrosion 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12975-1:2006+A1:2010, EN 12976-1:2017 and EN ISO 9488:1999 and the following apply. 3.1 assortment complete list of components (collectors, stores, controllers, pumps, etc.), which a company offers for its solar heating systems Note 1 to entry: For the purpose of this document, the assortment is restricted to components used for small custom built solar heating systems marketed by a company. 3.2 assortment file technical documentation file for small custom built systems of a company, which includes: — the complete assortment for small custom built systems; — the complete description of all system configurations; — the complete description of all marketed combinations of system configurations and components including the component dimensions and number of units; — further technical information 3.3 blow-off line connecting line between the outlet of the safety valve and the environment (preferably an open vessel at atmospheric pressure) 3.4 collector array group of collectors that are closely connected in series, in parallel or in combination of both modes, with one hydraulic input and one hydraulic output SIST EN 12977-1:2018

EN 12977-1:2018 (E) 9 3.5 control equipment controllers, sensors, pumps, actuators, etc. used for controlling a solar heating system; this system includes optional auxiliary heaters and other parts of the space heating system, for heat generation and distribution Note 1 to entry: Requirements and test methods for control equipment are given in EN 12977-5:2018. 3.6 expansion line connecting line between the collectors and the pressure expansion vessel connecting line between the collector array and the open expansion vessel 3.7 flow rate circulation rate 3.8 large custom built system solar heating system for the purpose of hot water preparation and/or space heating/cooling, which is designed for a specific situation by combining various components to a unique system Note 1 to entry: In general, the collector area is greater than 30 m2 and the store volume is greater than 3 m3. 3.9 safety line connecting line between the collector array and the safety valve connecting line between the collector array and the open expansion vessel 3.10 safety valve temperature and/or pressure limiting valve 3.11 small custom built system modular solar heating system of the remote storage type for the purpose of hot water preparation and/or space heating and/or cooling Note 1 to entry: The system has a well-identified configuration (see 3.13). It is assembled from components chosen from the market and described in an assortment file prepared by a company. Note 2 to entry: In general, the assortment file includes the possible system configurations, the assortment of components and their possible combinations and dimensions. The “company” can be the manufacturer of all or of parts of the components in the assortment; this company can also be only a consulting engineer who just produces the technical documentation and purchases the components from suppliers. Note 3 to entry: In general, the collector area is greater than 1 m2 and less than 30 m2 and the store volume is less than 3 m3. SIST EN 12977-1:2018

EN 12977-1:2018 (E) 10 Note 4 to entry: The system can be tested by experimentally testing the components and predicting the system performance for different combinations of components by computer simulation. 3.12 solar combisystem solar heating system for water heating and space heating 3.13 system configuration characteristics of a solar heating system including its hydraulic scheme (hydraulic connections between the collector array, the store(s) and other components) and its control concept Note 1 to entry: Systems differing by any other parameter, by the type or dimensions of the used components or the controller settings are considered to have the same configuration. 3.14 water wastage amount of water not warm enough to count in the tapping (cooled down water standing in pipes and fittings, which are mounted at or close to the hot water store or that are located within the domestic hot water distribution network and in the draw-off piping) 4 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviations apply. (UA) sb,s,a stand-by heat loss capacity rate of the store, in Watts per Kelvin; Vn nominal volume of the store, in litres 5 System classification 5.1 Small custom built systems Small custom built systems are classified as described in ISO 9459-1:1993, Clause 5. According to the purpose of these systems, the additional classification in Table 2 applies. Table 2 — Classes of small custom built systems according to their purpose Class Purpose A domestic hot water preparation only B space heating only C domestic hot water preparation and space heating D others (e.g. including cooling, swimming pool heating) 5.2 Large custom built systems Large custom built systems are classified in accordance with Table 3. SIST EN 12977-1:2018

EN 12977-1:2018 (E) 11 Table 3 — Classification of large systems Class Purpose A A system in which the store(s) and the

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