Thermal solar systems and components - Custom built systems - Part 5: Performance test methods for control equipment

This European Standard specifies performance test methods for control equipment. Furthermore, this document contains requirements on accuracy, durability and reliability of control equipment.
The tests described in this document are limited to electrically activated components delivered with or for the system by the final supplier. For the purposes of this document controller and control equipment for solar heating systems and auxiliary heaters, if part of the system, are restricted to the following:
a)   Controllers as:
1)   system clocks, timers and counters;
2)   differential thermostats;
3)   multi-function controllers.
b)   Sensors as:
1)   temperature sensors;
2)   irradiance sensors (for short wave radiation);
3)   pressure sensors;
4)   level sensors;
5)   flow meters;
6)   heat meters.
c)   Actuators as:
1)   pumps;
2)   solenoid and motor valves;
3)   relays.
d)   Combinations of controllers, sensors and actuators listed above.
An additional objective of the procedures described in this document is to verify control algorithms and, together with the accuracy of sensors, to determine control parameters. In addition to verifying the functioning of a controller, its equipment and actuators, the determined parameters may be used for numerical system simulations.
Typically, electrical anodes are not part of the control equipment and are not controlled by the control equipment. However, because they are electrical appliances, electrical anodes are included in this document.
This document is valid for control equipment of solar heating systems for the purpose of hot water preparation and/or space heating. If the solar system is connected to or part of a conventional heating system, the validity is extended to the entire system. In combination with the standards EN 12976-1, EN 12976-2 as well as EN 12977-1, EN 12977-2, EN 12977-3 and EN 12977-4, this document is valid for
e) factory made solar heating systems,
f) small custom built solar heating systems,
g) large custom built solar heating systems,
h)   auxiliary heater equipment used in connection with e), f) and g).

Thermische Solaranlagen und ihre Bauteile - Kundenspezifisch gefertigte Anlagen - Teil 5: Prüfmethoden für die Regeleinrichtungen

Diese Europäische Norm legt Prüfverfahren für die Beschreibung der Leistung von Regeleinrichtungen fest. Darüber hinaus enthält dieses Dokument Anforderungen an die Genauigkeit, die Dauerhaftigkeit und die Zuverlässigkeit von Regeleinrichtungen.
Die in diesem Dokument beschriebenen Prüfungen sind auf die vom Endlieferanten mit der oder für die Anlage gelieferten elektrisch betriebenen Bauteile begrenzt. Für die Anwendung dieses Dokuments sind Regler, Reglerzubehör und Regeleinrichtungen für thermische Solaranlagen und Zusatzheizgeräten, sofern diese Bestandteil der Anlage sind, auf folgende beschränkt:
a) Regler:
1) Systemuhren, Zeitgeber und Zähler;
2) Differenzthermostate;
3) Multifunktionsregler.
b) Messfühler:
1) Temperaturfühler;
2) Sensoren für die Bestrahlungsstärke (für kurzwellige Strahlung);
3) Drucksensoren;
4) Niveausensoren;
5) Durchflussmesser;
6) Wärmemengenzähler.
c) Stellglieder:
1) Pumpen;
2) Magnet- und Motorventile;
3) Relais.
d) Kombinationen der vorstehend aufgeführten Regler, Messfühler und Stellglieder.
Ein weiteres Ziel der in diesem Dokument beschriebenen Verfahren besteht darin, die Regelalgorithmen zu verifizieren und in Verbindung mit den Fehlergrenzen der Messfühlerdie Regelparameter zu bestimmen. Zusätzlich zur Verifizierung der Funktionsweise eines Reglers sowie des dazugehörigen Reglerzubehörs und der Stellglieder können die ermittelten Parameter für numerische Anlagensimulationen verwendet werden.
Elektrische Anoden sind üblicherweise nicht Bestandteil der Regeleinrichtungen und werden von diesen auch nicht geregelt oder gesteuert. Da es sich bei elektrischen Anoden jedoch um elektrische Einrichtungen handelt, werden sie in diesem Dokument mit einbezogen.
Dieses Dokument gilt für Regeleinrichtungen von thermischen Solaranlagen, die zur Trinkwassererwärmung und/oder Raumheizung dienen. Für den Fall, dass die Solaranlage an eine konventionelle Heizungsanlage angeschlossen oder Bestandteil einer solchen ist, wird die Gültigkeit dieses Dokuments auf die gesamte
EN 12977-1:2018, EN 12977-2:2018, EN 12977-3:2018 und EN 12977-4:2018 gilt dieses Dokument für
e) vorgefertigte thermische Solaranlagen,
f) kleine kundenspezifisch gefertigte thermische Solaranlagen,
g) große kundenspezifisch gefertigte thermische Solaranlagen,
h) Zusatzheizeinrichtungen, die in Verbindung mit e), f) und g) eingesetzt werden.

Installations solaires thermiques et leurs composants - Installations assemblées à façon - Partie 5 : Méthodes d'essai de performances pour systèmes de régulation

présente Norme européenne spécifie les méthodes d’essai de performances des systèmes de régulation. Par ailleurs, le présent document comporte des exigences relatives à la précision, à la durabilité et à la fiabilité des systèmes de régulation.
Les essais décrits sont limités aux composants fonctionnant à l’électricité fournis avec ou pour l’installation par le fournisseur final. Pour les besoins du présent document, le régulateur et les systèmes de régulation des installations de chauffage solaire et des appareils de chauffage d’appoint, s’ils sont intégrés à l’installation, se limitent aux éléments suivants :
a) Régulateurs tels que :
1) les horloges, temporisateurs et compteurs de l’installation ;
2) les thermostats différentiels ;
3) les régulateurs multifonctionnels.
b) Capteurs tels que :
1) les capteurs de température ;
2) les capteurs d’éclairement énergétique (pour le rayonnement à onde courte) ;
3) les capteurs de pression ;
4) les capteurs de niveau ;
5) les débitmètres ;
6) les compteurs de chaleur.
c) Actionneurs tels que :
1) les pompes ;
2) les électrovannes et vannes motorisées ;
3) les relais.
d) Les combinaisons des régulateurs, des capteurs et des actionneurs énumérés ci-dessus.
Les modes opératoires décrits dans le présent document ont également pour objet de vérifier les algorithmes de régulation et, avec la précision des capteurs, de déterminer les paramètres de régulation. Outre les résultats de la vérification du fonctionnement d’un régulateur, de ses équipements et actionneurs, les paramètres déterminés peuvent être utilisés pour des simulations numériques de l’installation.
Les anodes électriques types ne font pas partie du système de régulation et ne sont pas contrôlées par le système de régulation. Cependant, du fait qu’elles constituent un appareil électrique, les anodes électriques sont incluses dans le présent document.
Le présent document s’applique aux systèmes de régulation des installations de chauffage solaire destinées à la production d’eau chaude et/ou au chauffage des locaux. Si l’installation solaire est raccordée à ou fait partie d’une installation de chauffage conventionnelle, la validité est élargie à toute l’installation. En combinaison avec les EN 12976-1:2017, EN 12976-2:2017 ainsi que les normes EN 12977-1:2018, EN 12977-2:2018, EN 12977-3:2018 et EN 12977-4:2018, le présent document est valable pour :
e) les installations de chauffage solaire de série ;
f) les petites installations de chauffage solaire assemblées à façon ;
g) les grandes installations de chauffage solaire assemblées à façon ; et
h) les appareils de chauffage d’appoint utilisés en liaison avec e), f) et g).

Toplotni sončni sistemi in sestavni deli - Neserijsko izdelani sistemi - 5. del: Preskusne metode delovanja kontrolnih naprav

Ta evropski standard določa preskusne metode delovanja kontrolnih naprav. Ta dokument nadalje vsebuje zahteve glede natančnosti, trajnosti in zanesljivosti kontrolnih naprav.
Preskusi, opisani v tem dokumentu, so omejeni na električne sestavne dele, ki jih končni dobavitelj dobavi s sistemom ali zanj. Za namene tega dokumenta so krmilniki in kontrolne naprave za sončne ogrevalne sisteme in pomožne grelnike, če so del sistema, omejeni na:
a) krmilnike, kot so:
1) sistemske ure, časovniki in števci;
2) diferenčni termostati;
3) večfunkcijski krmilniki;
b) senzorji, kot so:
1) temperaturni senzorji;
2) senzorji za obsevanost (za kratkovalovno sevanje);
3) tlačni senzorji;
4) nivojski senzorji;
5) merilniki pretoka;
6) merilniki toplote;
c) pogone, kot so:
1) črpalke;
2) elektromagnetni in motorni ventili;
3) releji;
d) kombinacije krmilnikov, tipal in pogonov, navedenih zgoraj.
Postopki, opisani v tem dokumentu, so namenjeni tudi za preverjanje kontrolnih algoritmov in, skupaj z natančnostjo senzorjev, za določanje kontrolnih parametrov. Določeni parametri se poleg uporabe za preverjanje delovanja krmilnika, njegove opreme in aktivatorjev lahko uporabljajo za numerične simulacije sistema.
Električne anode običajno niso del kontrolnih naprav, pri čemer jih te naprave ne upravljajo. Ker pa so anode električne naprave, so vseeno vključene v ta dokument.
Ta dokument je veljaven za kontrolno opremo sončnih ogrevalnih sistemov za namen priprave vroče vode in/ali ogrevanje prostorov. Če je sončni sistem povezan z običajnim ogrevalnim sistemom ali je del njega, se veljavnost razširi na celoten sistem. V kombinaciji s standardi EN 12976-1, EN 12976-2 ter EN 12977-1, EN 12977-2, EN 12977-3 in EN 12977-4 ta dokument velja za
e) tovarniško izdelane sončne ogrevalne sisteme,
f) majhne neserijsko izdelane sončne ogrevalne sisteme,
g) velike neserijsko izdelane sončne ogrevalne sisteme,
h) pomožno grelno opremo, uporabljeno v povezavi s sistemi e), f) in g).

General Information

Status
Published
Public Enquiry End Date
19-Sep-2017
Publication Date
20-Aug-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
17-Apr-2018
Due Date
22-Jun-2018
Completion Date
21-Aug-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 5: Prüfmethoden für die RegeleinrichtungenInstallations solaires thermiques et leurs composants - Installations assemblées à façon - Partie 5 : Méthodes d'essai de performances pour systèmes de régulationThermal solar systems and components - Custom built systems - Part 5: Performance test methods for control equipment91.140.65Oprema za ogrevanje vodeWater heating equipment91.140.10Sistemi centralnega ogrevanjaCentral heating systems27.160Solar energy engineeringICS:Ta slovenski standard je istoveten z:EN 12977-5:2018SIST EN 12977-5:2018en,fr,de01-september-2018SIST EN 12977-5:2018SLOVENSKI

STANDARDSIST EN 12977-5:20121DGRPHãþD
SIST EN 12977-5:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12977-5
April
t r s z ICS
t yä s x r Supersedes EN
s t { y yæ wã t r s tEnglish Version
Thermal solar systems and components æ Custom built systems æ Part

wã Performance test methods for control equipment Installations solaires thermiques et leurs composants æInstallations assemblées à façon æ Partie

w ã Méthodes d 5essai de performances pour systèmes de régulation Thermische Solaranlagen und ihre Bauteile æ Kundenspezifisch gefertigte Anlagen æ Teil

wã Prüfmethoden für die Regeleinrichtungen 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 wã t r s z ESIST EN 12977-5:2018

EN 12977-5:2018 (E) 2 Contents Page European foreword ....................................................................................................................................................... 5 Introduction .................................................................................................................................................................... 6 1 Scope .................................................................................................................................................................... 7 2 Normative references .................................................................................................................................... 8 3 Terms and definitions ................................................................................................................................... 9 4 Symbols and abbreviations ...................................................................................................................... 10 5 Controller classification (including equipment classification) ................................................... 10 5.1 Controller ........................................................................................................................................................ 10 5.2 Sensor ............................................................................................................................................................... 11 5.3 Actuator ........................................................................................................................................................... 11 6 Requirements ................................................................................................................................................ 12 6.1 General requirements ................................................................................................................................ 12 6.1.1 Basic principles ............................................................................................................................................. 12 6.1.2 Electrical safety ............................................................................................................................................. 12 6.1.3 Freeze damage protection ........................................................................................................................ 12 6.1.4 Scald protection ............................................................................................................................................ 12 6.1.5 High temperature protection for materials and components ..................................................... 12 6.1.6 Lightning ......................................................................................................................................................... 13 6.2 Controllers, system clocks, timers and counters .............................................................................. 13 6.2.1 General ............................................................................................................................................................. 13 6.2.2 Accuracy requirements for controllers ................................................................................................ 13 6.2.3 Accuracy requirements for system clocks, timers and counters ................................................ 13 6.3 Sensors ............................................................................................................................................................. 13 6.3.1 Temperature sensors ................................................................................................................................. 13 6.3.2 Irradiance sensors ....................................................................................................................................... 14 6.3.3 Other sensors ................................................................................................................................................. 15 6.4 Indicators ........................................................................................................................................................ 16 6.5 Actuators ......................................................................................................................................................... 16 6.5.1 Circulation pumps ........................................................................................................................................ 16 6.5.2 Solenoid and motor valves ........................................................................................................................ 16 6.5.3 Relays ............................................................................................................................................................... 17 6.6 Initial operation and commissioning .................................................................................................... 17 6.7 Documentation .............................................................................................................................................. 17 7 Testing of sensors ........................................................................................................................................ 18 7.1 General ............................................................................................................................................................. 18 7.2 Testing of temperature sensors .............................................................................................................. 18 7.2.1 General ............................................................................................................................................................. 18 7.2.2 Test equipment ............................................................................................................................................. 18 7.2.3 Installation of sensors ................................................................................................................................ 19 7.2.4 Testing the high-temperature resistance of temperature sensors ............................................ 19 7.2.5 Testing of the accuracy of temperature sensors ............................................................................... 20 7.3 Testing of solar irradiance sensors ....................................................................................................... 22 7.3.1 General ............................................................................................................................................................. 22 7.3.2 Test equipment ............................................................................................................................................. 22 SIST EN 12977-5:2018

EN 12977-5:2018 (E) 3 7.3.3 Installation of sensors ................................................................................................................................. 23 7.3.4 Testing sensor resistance against extreme operating conditions .............................................. 23 7.3.5 Testing of the accuracy of solar irradiance sensors ......................................................................... 25 7.4 Testing of further sensors and measuring equipment ................................................................... 26 8 Testing of system clocks, timers and counters .................................................................................. 26 8.1 General ............................................................................................................................................................. 26 8.2 Test equipment .............................................................................................................................................. 26 8.3 Installation of system clocks, timers and counters .......................................................................... 27 8.4 Test procedure .............................................................................................................................................. 27 8.5 Data processing and evaluation .............................................................................................................. 28 8.5.1 General ............................................................................................................................................................. 28 8.5.2 System clocks and timers ........................................................................................................................... 28 8.5.3 Counters ........................................................................................................................................................... 28 9 Function testing of simple differential thermostats ........................................................................ 28 9.1 General ............................................................................................................................................................. 28 9.2 Test equipment .............................................................................................................................................. 28 9.2.1 General ............................................................................................................................................................. 28 9.2.2 Simulation box approach ........................................................................................................................... 28 9.2.3 Tempering device/temperature calibrators or calibration baths approach ......................... 29 9.2.4 Input/output emulator approach ........................................................................................................... 29 9.3 Installation of differential thermostats and/or sensors ................................................................ 30 9.3.1 General ............................................................................................................................................................. 30 9.3.2 Differential thermostats............................................................................................................................. 30 9.3.3 Sensors ............................................................................................................................................................. 30 9.4 Test procedure .............................................................................................................................................. 30 9.4.1 General ............................................................................................................................................................. 30 9.4.2 Test procedure, simulation box approach........................................................................................... 30 9.4.3 Test procedure using tempering devices, temperature calibrators or calibration baths .................................................................................................................................................................. 31 10 Function testing of multi-function controllers .................................................................................. 32 10.1 General ............................................................................................................................................................. 32 10.2 Principle of multi-function controller testing .................................................................................... 32 10.3 Intellectual property of the manufacturer .......................................................................................... 33 10.4 Test facility for multi-function controller testing ............................................................................. 33 10.4.1 General ............................................................................................................................................................. 33 10.4.2 Requirements for simulation of temperature sensors ................................................................... 33 10.4.3 Requirements on recording of controller response ........................................................................ 33 10.4.4 Test facility with input/output emulator ............................................................................................. 34 10.5 Preliminary steps when using a test facility provided with an input/output emulator ..... 35 10.5.1 General ............................................................................................................................................................. 35 10.5.2 Adaptation of the input/output emulator and testing/measuring devices ............................ 35 10.5.3 Wiring of controller, input/output emulator and test site computer ....................................... 36 10.5.4 Setting of controller parameters ............................................................................................................. 36 10.5.5 Calibration of the input/output emulator ........................................................................................... 36 10.6 Test procedure .............................................................................................................................................. 37 10.6.1 General ............................................................................................................................................................. 37 10.6.2 Test sequences ............................................................................................................................................... 37 10.7 Data acquisition and processing ............................................................................................................. 39 10.7.1 General ............................................................................................................................................................. 39 10.7.2 Data acquisition ............................................................................................................................................ 39 10.7.3 Data processing ............................................................................................................................................. 39 SIST EN 12977-5:2018

EN 12977-5:2018 (E) 4 11 Testing of actuators and additional control equipment ................................................................ 40 11.1 General ............................................................................................................................................................. 40 11.2 Determination of the electric power consumption of actuators and further components .................................................................................................................................................... 40 11.3 Measuring the electric power of pumps with varying power consumption ........................... 40 12 Documentation .............................................................................................................................................. 40 12.1 General ............................................................................................................................................................. 40 12.2 General information .................................................................................................................................... 40 12.3 Marking ............................................................................................................................................................ 41 12.4 Information for the installer, assembly and installation ............................................................... 41 12.5 Information for the user, operation and maintenance................................................................... 41 13 Test report ...................................................................................................................................................... 42 Annex A (informative)

Testing the electrical supply voltage dependence of control equipment ....................................................................................................................................................... 43 A.1 General ............................................................................................................................................................. 43 A.2 Test equipment ............................................................................................................................................. 43 A.3 Test procedure .............................................................................................................................................. 43 A.4 Data processing ............................................................................................................................................. 44 Bibliography ................................................................................................................................................................. 45

SIST EN 12977-5:2018

EN 12977-5:2018 (E) 5 European foreword This document (EN 12977-5:2018) 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 12977-5:2012. 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. 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 12977-5:2018

EN 12977-5:2018 (E) 6 Introduction One purpose of this document is to define how to check that a controller is behaving as it is intended when in combination with associated equipment (e.g. sensors, pumps and other actuators). In addition, function testing of differential thermostats and so-called “multi-function” controllers are described in order to determine switch on and switch off temperature differentials as well as control algorithms where dependent on temperature differences, temperature levels or operating conditions of the system. For all functions and operations, it should be tested and documented, whether the controller and control equipment comply with the manufacturer's guidance. In addition, the capability for all sensors to resist extreme operating conditions and to determine any significant drift in accuracy caused by this should be tested. The energy consumption of the controller and the associated control equipment should be documented, e.g. actuators. If the electrical supply is different from the mains supply this should be documented, e.g. PV powered pumps. Performance predictions for the associated system that the control equipment belongs to are considered. For the determination of the component parameters according to the CTSS method, as specified in EN 12977-2:2018, a detailed investigation of all relevant algorithms, features and parameters controlling the system is relevant. The most widely used control equipment for solar heating systems is described in EN 12977-5:2018. For control equipment not widely used in solar heating systems or auxiliary heaters, if part of the system, accompanying standards should be applied if available. In respect of potential adverse effects to human health or life (e.g. drinking water quality) caused by the products covered by EN 12977-5:2018 it should be noted that: — 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; — while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. EN 12976-1:2017, EN 12976-2:2017 as well as EN 12977-1:2018, EN 12977-2:2018, EN 12977-3:2018, and EN 12977-4:2018 distinguish two categories of solar heating systems: 1) factory made solar heating systems; 2) custom built solar heating systems. As defined in EN 12977-1:2018, the classification of a system as factory made or custom built is a choice of the final supplier. Custom built solar heating systems are subdivided into two categories: a) large custom built systems are uniquely designed for a specific situation; b) 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; SIST EN 12977-5:2018

EN 12977-5:2018 (E) 7 1 Scope This European Standard specifies performance test methods for control equipment. Furthermore, this document contains requirements on accuracy, durability and reliability of control equipment. The tests described in this document are limited to electrically activated components delivered with or for the system by the final supplier. For the purposes of this document controller and control equipment for solar heating systems and auxiliary heaters, if part of the system, are restricted to the following: a) Controllers as: 1) system clocks, timers and counters; 2) differential thermostats; 3) multi-function controllers. b) Sensors as: 1) temperature sensors; 2) irradiance sensors (for short wave radiation); 3) pressure sensors; 4) level sensors; 5) flow meters; 6) heat meters. c) Actuators as: 1) pumps; 2) solenoid and motor valves; 3) relays. d) Combinations of controllers, sensors and actuators listed above. An additional objective of the procedures described in this document is to verify control algorithms and, together with the accuracy of sensors, to determine control parameters. In addition to verifying the functioning of a controller, its equipment and actuators, the determined parameters may be used for numerical system simulations. Typically, electrical anodes are not part of the control equipment and are not controlled by the control equipment. However, because they are electrical appliances, electrical anodes are included in this document. SIST EN 12977-5:2018

EN 12977-5:2018 (E) 8 This document is valid for control equipment of solar heating systems for the purpose of hot water preparation and/or space heating. If the solar system is connected to or part of a conventional heating system, the validity is extended to the entire system. In combination with the standards EN 12976-1:2017, EN 12976-2:2017 as well as EN 12977-1:2018, EN 12977-2:2018, EN 12977-3:2018 and EN 12977-4:2018, this document is valid for: e) factory made solar heating systems, f) small custom built solar heating systems, g) large custom built solar heating systems, h) auxiliary heater equipment used in connection with e), f) and g). 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 12976-1:2017, Thermal solar systems and components - Factory made systems - Part 1: General requirements EN 12977-1:2018, Thermal solar systems and components — Custom built systems — Part 1: General requirements for solar water heaters and combisystems EN 16297 (all parts), Pumps - Rotodynamic pumps - Glandless circulators EN 60255 (all parts), Measuring relays and protection equipment (IEC 60255, all parts) 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 60730 (all parts), Automatic electrical controls for household and similar use (IEC 60730, all parts) EN 62305-3, Protection against lightning - Part 3: Physical damage to structures and life hazard EN ISO 4413, Hydraulic fluid power - General rules and safety requirements for systems and their components (ISO 4413:2010) EN ISO 9488:1999, Solar energy - Vocabulary (ISO 9488:1999) EN ISO 9806, Solar energy - Solar thermal collectors - Test methods (ISO 9806:2013) ISO 9060, Solar energy — Specification and classification of instruments for measuring hemispherical solar and direct solar radiation ISO 15218, Pneumatic fluid power — 3/2 solenoid valves — Mounting interface surfaces SIST EN 12977-5:2018

EN 12977-5:2018 (E) 9 3 Terms and
...

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