CEN/TS 12977-1:2010

SLOVENSKI STANDARD
01-september-2010
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SIST ENV 12977-1:2002
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Thermal solar systems and components - Custom built systems - Part 1: General
requirements for solar water heaters and combisystems
Thermische Solaranlagen und ihre Bauteile - Kundenspezifisch gefertigte Anlagen - Teil
1: Allgemeine Anforderungen
Installations solaires thermiques et leurs composants - Installations assemblées à façon -
Partie 1: Exigences générales pour chauffe-eau solaires et installations mixtes
Ta slovenski standard je istoveten z: CEN/TS 12977-1:2010
ICS:
27.160 6RQþQDHQHUJLMD Solar energy engineering
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
91.140.65 Oprema za ogrevanje vode Water heating equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 12977-1
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
April 2010
ICS 27.160 Supersedes ENV 12977-1:2001
English Version
Thermal solar systems and components - Custom built systems
- Part 1: General requirements for solar water heaters and
combisystems
Installations solaires thermiques et leurs composants - Thermische Solaranlagen und ihre Bauteile -
Installations assemblées à façon - Partie 1: Exigences Kundenspezifisch gefertigte Anlagen - Teil 1: Allgemeine
générales pour chauffe-eau solaires et installations mixtes Anforderungen an Solaranlagen zur Trinkwassererwärmung
und solare Kombianlagen
This Technical Specification (CEN/TS) was approved by CEN on 9 September 2008 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 12977-1:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction .5
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
5.2 Large custom built systems . 10
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 . 15
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
6.7 Initial operation and commissioning . 17
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 . 18
6.8.4 Documentation for large systems . 18
6.9 System performance . 19
6.10 Water wastage . 19
Bibliography . 20

Tables
Table 1 — Division for factory made and custom built solar heating systems . 6
Table 2 — Classes of small custom built systems according to their purpose . 10
Table 3 — Classification of large systems . 11

Foreword
This document (CEN/TS 12977-1:2010) has been prepared by Technical Committee CEN/TC 312 “Thermal
solar systems and components”, the secretariat of which is held by ELOT.
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 supersedes ENV 12977-1:2001.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.
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.
a) Factory Made and Custom Built solar heating systems
EN 12976-1, EN 12976-2 and CEN/TS 12977-1 and -2, EN 12977-3, CEN/TS 12977-4 and -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 to 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 CEN/TS 12977-1, test
methods are specified in CEN/TS 12977-1 and -2, EN 12977-3, CEN/TS 12977-4 and -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)
...