prEN 442-2
(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 of heating
appliances fed with water or steam at temperatures below 120 °C, supplied by a remote heat 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 to the
trade in order to ensure the correct application of the products.
This European Standard does not apply to independent heating appliances.
Heizkörper und Konvektoren - Teil 2: Prüfverfahren und Leistungsangabe
Diese Europäische Norm legt die Verfahren zur Bestimmung der Norm-Wärmeleistungen von Heizkörpern und Konvektoren zum Betrieb mit Wasser oder Dampf unter 120 °C aus einer getrennten Wärmequelle fest.
Diese Europäische Norm bestimmt die von den Prüflaboratorien zu treffenden Vorkehrungen und die anzuwendenden Prüfverfahren. 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.
Diese Europäische Norm legt auch zusätzliche, einheitliche Angaben fest, die der Hersteller dem Markt zur Verfügung stellen muss, um die richtige Verwendung der Produkte sicherzustellen.
Diese Europäische Norm gilt nicht für selbständige Heizgeräte.
Radiateurs et convecteurs - Partie 2: Méthodes d'essai et d'évaluation
La présente Norme européenne définit les procédures de détermination des puissances thermiques
nominales des appareils de chauffage alimentés avec de l'eau ou de la vapeur à des températures inférieures
à 120 °C, fournie par une source de chaleur 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
stipuler dans sa documentation commerciale afin d'assurer une utilisation correcte des produits.
La présente Norme européenne ne s'applique pas aux dispositifs de chauffage indépendants.
Ogrevala in konvektorji - 2. del: Preskusne metode in vrednotenje rezultatov
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2011
Ogrevala in konvektorji - 2. del: Preskusne metode in vrednotenje rezultatov
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: prEN 442-2
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
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2010
ICS 91.140.10 Will supersede EN 442-2:1996
English Version
Radiators and convectors - Part 2: Test methods and rating
Radiateurs et convecteurs - Partie 2: Méthodes d'essai et Heizkörper und Konvektoren - Teil 2: Prüfverfahren und
d'évaluation Leistungsangabe
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 130.
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 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
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 442-2 rev:2010: E
worldwide for CEN national Members.
Contents Page
Foreword . 4
Introduction . 5
1 Scope . 5
2 Normative references . 5
3 Definitions . 6
4 Symbols and units of measurement . 8
5 Selection of heating appliances to be tested . 10
5.1 Classification . 10
5.2 Selection of models to be tested for determining the thermal outputs of a type . 10
5.3 Testing samples submission and identification . 12
5.4 Supplementary test . 16
6 Laboratory arrangements and test methods . 16
6.1 Principle . 16
6.2 Apparatus . 16
6.2.1 Test system . 16
6.2.2 Reference test installation . 16
6.2.3 Master radiators . 18
6.2.4 Verification of test installation repeatability and reproducibility . 23
6.2.5 Accuracy of measuring instruments and devices . 28
6.2.6 Calibration of measuring instruments . 28
6.3 Preparation for thermal output test. 28
6.4 Test methods . 29
6.4.1 General . 29
6.4.2 Weighing method . 29
6.4.3 Electric method . 29
6.4.4 Measurements and calculations . 29
6.4.5 Determination of the characteristic equation . 32
6.5 Presentation of results . 32
6.5.1 Standard thermal output of a model . 32
6.5.2 Determination of the catalogue outputs of a type made at variable water flow rate. . 33
7 Test report . 33
Annex A (normative) Master radiators dimensional verification . 35
Annex B (informative) Determination of pressure drop . 40
B.1 Pressure drop equation of a type . 40
B.1.1 Pressure drop characteristic equation of a model . 41
B.2 Test method . 41
B.2.1 Test circuit . 41
B.2.2 Pressure tappings . 41
B.3 Test procedure . 41
B.3.1 Setting up . 41
B.4 Measurements of differential pressures using an inverted U tube manometer . 41
B.4.1 Techniques of measurement . 42
B.4.2 Surface tension effect . 42
B.4.3 Leakage . 42
B.4.4 Air pockets in connecting piping . 42
B.4.5 Blocked pressure holes . 42
B.4.6 Level of inlet and outlet connections. 42
B.4.7 Damping (throttling) of excessive movement (oscillation) of inverted U tube manometer
liquid . 42
Annex C (normative) Least squares regression for a model . 46
Annex D (normative) Analysis of test results by the method of least squares multiple regression . 47
Annex E (normative) Specimen of the test report . 49
Annex F (informative) Apparatus and method for checking the bulk temperature measuring
devices . 52
Annex G (informative) Examples of typical appliances according to table 4 . 54
Annex H (normative) Determination of the ΦM values of the master radiators primary set . 64
Annex J (normative) Traceability of the thermal output measurement of radiators and convectors . 65
J.1 Scope . 65
J.2 Thermal output traceability . 65
J.2.1 Reference test installations . 65
J.2.2 Approved test installations . 66
J.3 Handling of the Master radiator sets . 66
Annex K (normative) Calibration Procedure . 67
K.1 RRT Organizational course. . 67
K.2 Test procedure and submission of results . 67
K.3 Test analysis and assessment . 68
Annex L (normative) Pretreatment and paint testing method . 70
Foreword
This document (prEN 442-2:2010) 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 document is currently submitted to the CEN Enquiry.
This document will supersede EN 442-2:1996, EN 442-2:1996/A1:2000, EN 442-2:1996/A2:2003.
This European Standard comes from an output of the project SMT4 - CT97 - 2127 funded by the European
Commission DGXII-RDT.
Introduction
This European Standard results from the recognition that the heating appliances falling into the field of
application hereinafter stated are traded on the basis of their thermal output.
To evaluate and compare different appliances it is therefore necessary to refer to a single stipulated value,
hereinafter called the standard thermal outputs.
The standard thermal outputs are defined value taken from the characteristic equation.
The pre-requisites of the standard thermal outputs, as defined by this European Standard, are the following:
to be representative of the actual output of the appliance in different operating conditions;
to be reproducible within the tolerances defined by this European Standard, taking into account the state
of measuring techniques;
to be representative of the thermal output, obtainable under the same test conditions, of any identical
sample taken out of the current production (within the tolerances defined by this European Standard taking
into account the state of measuring techniques and methods of manufacture).
This European Standard for radiators and convectors consists of the following Parts:
Part 1: Technical specifications and requirements
Part 2: Test methods and rating
Part 3: Evaluation of conformity
1 Scope
This European Standard defines procedures for determining the standard thermal outputs of heating
appliances fed with water or steam at temperatures below 120 °C, supplied by a remote heat source.
This European Standard specifies the laboratory arrangements and testing methods to
...
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