prEN 12976-2

Thermal solar systems and components - Factory made systems - Part 2: Test methods

This European Standard specifies test methods for validating the requirements for Factory Made Thermal Solar Heating Systems as specified in prEN 12976-1. The standard also includes two test methods for thermal performance characterization by means of whole system testing.

Thermische Solaranlagen und ihre Bauteile - Vorgefertigte Anlagen - Teil 2: Prüfverfahren

Diese Europäische Norm legt Verfahren für die Prüfung der Erfüllung der Anforderungen für vorgefertigte thermische Solaranlagen fest, wie sie in prEN 12976-1 angegeben sind. Die Norm enthält auch zwei Prüfverfahren zur Charakterisierung der Wärmeleistung durch Prüfung der Gesamtanlage.

Installations solaires thermiques et leurs composants - Installations préfabriquées en usine - Partie 2: Méthodes d’essai

La présente Norme européenne spécifie des méthodes d’essai permettant de valider les exigences
applicables aux installations de chauffage solaire thermique préfabriquées en usine, telles que spécifiées
dans le prEN 12976-1. La norme comprend également deux méthodes d’essai pour la caractérisation des
performances thermiques de l’installation dans son ensemble.

Toplotni sončni sistemi in sestavni deli - Industrijsko izdelani sistemi - 2. del: Preskusne metode

General Information

• Status: Not Published
• Publication Date: 25-Nov-2013
• Withdrawal Date: 25-May-2014
• ICS: 27.160 - Solar energy engineering
• Technical Committee: CEN/TC 312 - Thermal solar systems and components
• Drafting Committee: CEN/TC 312/WG 2 - Factory made systems
• Current Stage: 4098 - Decision to abandon - Enquiry
• Start Date: 08-Apr-2013
• Completion Date: 08-Apr-2013
• Ref Project: oSIST prEN 12976-2:2012 - Thermal solar systems and components - Factory made systems - Part 2: Test methods

Relations

• Revises: EN 12976-2:2006 - Thermal solar systems and components - Factory made systems - Part 2: Test methods
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2012
7RSORWQLVRQþQLVLVWHPLLQVHVWDYQLGHOL,QGXVWULMVNRL]GHODQLVLVWHPLGHO
3UHVNXVQHPHWRGH
Thermal solar systems and components - Factory made systems - Part 2: Test methods
Thermische Solaranlagen und ihre Bauteile - Vorgefertigte Anlagen - Teil 2:
Prüfverfahren
Installations solaires thermiques et leurs composants - Installations préfabriquées en
usine - Partie 2: Méthodes d’essai
Ta slovenski standard je istoveten z: prEN 12976-2
ICS:
27.160 6RQþQDHQHUJLMD Solar energy engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2012
ICS 27.160 Will supersede EN 12976-2:2006
English Version
Thermal solar systems and components - Factory made
systems - Part 2: Test methods
Installations solaires thermiques et leurs composants - Thermische Solaranlagen und ihre Bauteile - Vorgefertigte
Installations préfabriquées en usine - Partie 2: Méthodes Anlagen - Teil 2: Prüfverfahren
d'essai
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 312.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12976-2:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction .5
1 Scope .7
2 Normative references .7
3 Terms and definitions .7
4 Symbols and abbreviations .7
5 Testing .8
5.1 Freeze resistance .8
5.1.1 General .8
5.1.2 Systems using antifreeze fluid .8
5.1.3 Drain-back systems .8
5.1.4 Drain-down systems .9
5.1.5 Freeze protection and control functions combined .9
5.1.6 Other systems .9
5.2 Over temperature protection . 10
5.2.1 Purpose . 10
5.2.2 Apparatus . 10
5.2.3 Procedure . 10
5.2.4 Reporting requirements . 11
5.3 Pressure resistance . 11
5.3.1 Purpose . 11
5.3.2 Apparatus . 11
5.3.3 Safety precaution . 11
5.3.4 Procedure . 12
5.3.5 Reporting requirements . 12
5.4 Water contamination . 13
5.5 Lightning protection . 13
5.6 Safety equipment . 13
5.6.1 Safety valves . 13
5.6.2 Safety lines and expansion lines . 13
5.6.3 Blow-off lines . 13
5.7 Labelling . 13
5.8 Thermal performance characterisation . 14
5.8.1 Introduction . 14
5.8.2 Test procedure . 14
5.8.3 Prediction of yearly performance indicators . 15
5.9 Ability of solar-plus-supplementary systems to cover the load . 19
5.9.1 General . 19
5.9.2 Boundary conditions for auxiliary heating . 19
5.9.3 Boundary conditions for daily load . 20
5.9.4 Determination of the ability to cover the maximum daily load by means of testing the
system . 20
5.9.5 Determination of the ability to cover the maximum daily load by means of numerical
simulations . 21
5.10 Reverse flow protection . 21
5.11 Electrical safety. 21
Annex A (normative) Thermal performance presentation sheet . 22
Annex B (normative) Reference conditions for performance prediction . 24
B.1 General . 24
B.2 Pipe diameter and insulation thickness . 26
B.3 Calculation of cold water temperature at reference location. 27
Annex C (informative) Extreme climate test procedure for the assessment of the frost resistance
of solar DHW systems with outdoor storage tank or systems using heat transfer fluid with
the risk of freezing . 29
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 . 29
C.1.1 Objective and applicability . 29
C.1.2 Apparatus and mounting of the system . 29
C.1.3 Test procedure . 30
 Test conditions — . 31
C.1.4 Determination of the test conditions for freezing period . 31
C.1.5 Results . 31
C.2 Indoor test procedure for assessment of the reliability of solar DWH systems in respect
of overheating protection . 32
C.2.1 Objective and applicability . 32
C.2.2 Apparatus and mounting of the system . 32
C.2.3 Test procedure . 34
C.2.4 Test conditions . 35
C.2.5 Results . 36
Annex D (informative) Ageing test for thermostatic valves . 38
D.1 General . 38
D.2 Test arrangement . 38
D.3 Test Procedure . 39
D.4 Results . 39
Annex E (informative) Lightning protection test for solar heating systems . 40
E.1 Field of application . 40
E.2 Purpose . 40
E.3 Requirements . 40
E.4 Apparatus .
...