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EN 442-2:2014

(Main)

Radiators and convectors - Part 2: Test methods and rating

Radiators and convectors - Part 2: Test methods and rating

This European Standard defines procedures for determining the standard thermal outputs and other characteristics of radiators and convectors installed in a permanent manner in construction works, fed with water or steam at temperatures below 120 °C, supplied by a remote energy source.
This European Standard specifies the laboratory arrangements and testing methods to be adopted, the admissible tolerances, the criteria for selecting the samples to be tested and for verifying the conformity of the current production with the samples tested at the initial test.
This European Standard also defines the additional common data that the manufacturer shall provide with the product in order to ensure the correct application of the products.
This European Standard does not apply to fan assisted radiators, fan assisted convectors and trench convectors and to independent heating appliances.

Radiatoren und Konvektoren - Teil 2: Prüfverfahren und Leistungsangabe

Diese Europäische Norm legt die Verfahren zur Bestimmung der Norm-Wärmeleistungen und anderer Merkmale von Heizkörpern und Konvektoren für den dauerhaften Einbau in Bauwerken zum Betrieb mit Wasser oder Dampf unter 120 °C aus einer externen Wärmequelle fest.
Diese Europäische Norm bestimmt die von den Prüflaboren zu treffenden Vorkehrungen und die anzuwendenden Prüfverfahren und legt außerdem die zulässigen Abweichungen, die Kriterien für die Auswahl der Prüflinge und den Nachweis der Übereinstimmung der Werte aus der laufenden Fertigung mit den Ergebnissen des Prüflings aus der Erstprüfung fest.
Diese Europäische Norm legt auch die zusätzlichen einheitlichen Angaben fest, die der Hersteller mit dem Produkt zur Verfügung stellen muss, um die richtige Verwendung der Produkte sicherzustellen.
Diese Norm gilt nicht für gebläseunterstützte Heizkörper, gebläseunterstützte Konvektoren und Unterflur-konvektoren und für selbstständige Heizkörper.

Radiateurs et convecteurs - Partie 2 : Méthodes d’essai et d’évaluation

La présente Norme européenne définit les procédures de détermination des puissances thermiques nominales et autres caractéristiques des radiateurs et convecteurs destinés à être installés de façon durable dans les ouvrages de construction, alimentés avec de l'eau ou de la vapeur à des températures inférieures à 120 °C, fournie par une source d'énergie extérieure.
La présente Norme européenne spécifie les dispositifs de laboratoire et les méthodes d'essai à adopter, les tolérances admissibles, ainsi que les critères pour la sélection des échantillons à soumettre à essai et pour la vérification de la conformité de la production courante avec les échantillons initialement soumis à essai.
La présente Norme européenne définit également les données additionnelles usuelles que le fabricant doit fournir avec son produit afin d'assurer une utilisation correcte des produits.
La présente Norme européenne ne s'applique pas aux radiateurs et convecteurs avec ventilateurs, aux convecteurs encastrés dans le sol et aux dispositifs de chauffage indépendants.

Končni prenosniki toplote in konvektorji - 2. del: Preskusne metode in vrednotenje

Ta del standarda EN 442 določa postopke za ugotavljanje standardnega toplotnega oddajanja in drugih lastnosti kovinskih radiatorjev in konvektorjev, trajno nameščenih v zgradbe, ki se iz oddaljenega vira toplote polnijo z vodo ali paro pri temperaturi pod 120 ° C.
Ta evropski standard določa ureditev laboratorijev in zahtevane preskusne metode, dopustne tolerance, merila za izbor preskusnih vzorcev in za preverjanje skladnosti trenutne proizvodnje z vzorci, presušenimi ob prvem preskusu.
Ta evropski standard opredeljuje tudi dodatne skupne podatke, ki jih mora proizvajalec zagotoviti za pravilno uporabo izdelkov.
Ta evropski standard ne velja za radiatorje z ventilatorji, konvektorje z radiatorji in talne konvektorje ter samostojne ogrevalne naprave.

General Information

Status
Published
Publication Date
09-Dec-2014
ICS
91.140.10 - Central heating systems
Technical Committee
CEN/TC 130 - Space heating appliances without integral heat sources
Drafting Committee
CEN/TC 130/WG 11 - Radiators
Current Stage
9093 - Decision to confirm - Review Enquiry
Completion Date
04-Jun-2020
Directive
305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
89/106/EEC - Construction products
Mandate
M/129 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on space heating appliances
Ref Project
SIST EN 442-2:2015 - Radiators and convectors - Part 2: Test methods and rating

Relations

Replaces
EN 442-2:1996/A2:2003 - Radiators and convectors - Part 2: Test Methods and rating
Effective Date
17-Dec-2014
Replaces
EN 442-2:1996/A1:2000 - Radiators and convectors - Part 2: Test methods and rating
Effective Date
17-Dec-2014
Replaces
EN 442-2:1996 - Radiators and convectors - Part 2: Test methods and rating
Effective Date
06-Jun-2012

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SLOVENSKI STANDARD
01-marec-2015
1DGRPHãþD
SIST EN 442-2:1997
SIST EN 442-2:1997/A1:2002
SIST EN 442-2:1997/A2:2004
.RQþQLSUHQRVQLNLWRSORWHLQNRQYHNWRUMLGHO3UHVNXVQHPHWRGHLQYUHGQRWHQMH
Radiators and convectors - Part 2: Test methods and rating
Heizkörper und Konvektoren - Teil 2: Prüfverfahren und Leistungsangabe
Radiateurs et convecteurs - Partie 2 : Méthodes d'essai et d'évaluation
Ta slovenski standard je istoveten z: EN 442-2:2014
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 442-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2014
ICS 91.140.10 Supersedes EN 442-2:1996
English Version
Radiators and convectors - Part 2: Test methods and rating
Radiateurs et convecteurs - Partie 2 : Méthodes d'essai et Radiatoren und Konvektoren - Teil 2: Prüfverfahren und
d'évaluation Leistungsangabe
This European Standard was approved by CEN on 11 October 2014.

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 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 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 Macedonia, 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 442-2:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms, definitions, symbols and units .6
3.1 Terms and definitions .6
3.2 Symbols and units of measurement . 11
4 Selection of heating appliances to be tested . 12
4.1 Classification . 12
4.2 Selection of models to be tested for determining the thermal outputs of a type . 12
4.2.1 Selection of models to be tested when the variable characteristic dimension is the overall

height and the cross-section of the variable part is constant . 12
4.2.2 Selection of models to be tested when the variable characteristic dimension for the type

is other than the overall height . 13
4.3 Testing samples submission and identification . 14
4.4 Supplementary test. 17
5 Equipment of laboratory and test methods . 17
5.1 Principle . 17
5.2 Apparatus . 17
5.2.1 Test system . 17
5.2.2 Reference test installation . 17
5.2.3 Master radiators . 20
5.2.4 Verification of test installation repeatability and reproducibility . 24
5.2.5 Accuracy of measuring instruments and devices . 29
5.2.6 Calibration of measuring instruments . 30
5.3 Preparation for thermal output test . 30
5.4 Test methods . 30
5.4.1 General . 30
5.4.2 Weighing method . 31
5.4.3 Electric method . 31
5.4.4 Measurements and calculations . 31
5.4.5 Determination of the characteristic equation . 34
5.5 Presentation of results . 35
5.5.1 Standard thermal output of a model . 35
5.5.2 Determination of the catalogue outputs of a type made at variable water flow rate . 36
6 Test report . 36
Annex A (normative) Master radiators dimensional verification . 39
Annex B (informative) Determination of pressure drop . 46
B.1 Introduction . 46
B.2 Pressure drop equation of a type. 47
B.2.1 General . 47
B.2.2 Pressure drop characteristic equation of a model . 47
B.3 Test method . 47
B.3.1 Test circuit . 47
B.3.2 Pressure tappings. 47
B.4 Test procedure — Setting up . 48
B.5 Measurements of differential pressures using an inverted U tube manometer . 48
B.5.1 Techniques of measurement . 48
B.5.2 Surface tension effect . 48
B.5.3 Leakage . 48
B.5.4 Air pockets in connecting piping . 48
B.5.5 Blocked pressure holes . 48
B.5.6 Level of inlet and outlet connections . 49
B.5.7 Damping (throttling) of excessive movement (oscillation) of inverted U tube manometer
liquid . 49
Annex C (normative) Least squares regression for a model . 53
Annex D (normative) Analysis of test results by the method of least squares multiple regression . 54
Annex E (normative) Specimen of the test report . 56
Annex F (informative) Apparatus and method for checking the bulk temperature measuring
devices . 60
Annex G (informative) Examples of typical appliances according to Table 4 . 62
Annex H (normative) Determination of the Φ values of the master radiators primary set . 71
M
Annex I (normative) Traceability of the thermal output measurement of radiators and convectors . 72
I.1 General . 72
I.2 Thermal output traceability . 72
I.2.1 Reference test installations . 72
I.2.2 Approved test installations . 73
I.3 Handling of the Master radiator sets . 73
Annex J (normative) Calibration Procedure. 74
J.1 General . 74
J.2 RRT Organizational course . 74
J.3 Test procedure and submission of results . 75
J.4 Test analysis and assessment . 75
Annex K (normative) Pretreatment and paint testing method . 77
Bibliography . 78

Foreword
This document (EN 442-2:2014) has been prepared by Technical Committee CEN/TC 130 “Space heating
appliances without integral heat sources”, the secretariat of which is held by UNI.
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 June 2015, and conflicting national standards shall be withdrawn at
the latest by June 2015.
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 EN 442-2:1996.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
The most significant changes that have been made in this new edition of EN 442-2 are the following ones:
— some new definitions have been added;
— the straight or curved towel or bathroom radiator have been included;
— different surface treatments have been included;
— a new normative Annex J "Calibration Procedure" has been added;
— a new normative Annex K "Pretreatment and paint testing method" has been added.
This European Standard comes from an output
...

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