oSIST prEN 442-1:2011

Radiators and convectors - Part 1: Technical specifications and requirements

This European Standard defines the technical specifications and requirements of radiators and convectors
to be installed in central heating systems in residential buildings.
Radiators and convectors are components for installation in a permanent manner in construction works.
This European Standard covers radiators and convectors fed with water or steam at temperatures below
120 °C, supplied by a remote heat source.
This European Standard does not apply to independent heating appliances.
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.

Heizkörper und Konvektoren - Teil 1: Technische Spezifikationen und Anforderungen

Diese Europäische Norm definiert die technischen Spezifikationen und Anforderungen an Heizkörper und Konvektoren, die zum Einbau in Zentralheizungsanlagen in Wohngebäuden bestimmt sind.
Heizkörper und Konvektoren sind Komponenten zum dauerhaften Einbau in Bauwerken.
Diese Europäische Norm gilt für Heizkörper und Konvektoren zum Betrieb mit Wasser oder Dampf, bei Temperaturen unter 120 °C, die aus einer getrennten Wärmequelle versorgt werden.
Diese Europäische Norm gilt nicht für selbständige Heizgeräte.
Diese Europäische Norm legt auch die zusätzlichen, einheitlichen Angaben fest, die der Hersteller dem Markt zur Verfügung stellen muss, um die richtige Verwendung der Produkte sicherzustellen.

Radiateurs et convecteurs - Partie 1: Spécifications et exigences techniques

La présente Norme européenne définit les spécifications techniques et les exigences requises pour les
radiateurs et convecteurs destinés à être installés dans les systèmes de chauffage central des bâtiments
résidentiels.
Les radiateurs et convecteurs sont des éléments destinés à être installés de façon durable dans les ouvrages
de construction.
La présente Norme européenne couvre les radiateurs et convecteurs 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 ne s'applique pas aux dispositifs de chauffage indépendants.
La présente Norme européenne définit également les données additionnelles usuelles que le constructeur doit
fournir à la profession pour assurer une mise en oeuvre correcte des produits.

Ogrevala in konvektorji - 1. del: Tehnične specifikacije in zahteve

General Information

• Status: Not Published
• Public Enquiry End Date: 30-Mar-2011
• ICS: 91.140.10 - Central heating systems
• Technical Committee: OGS - Heating for buildings
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 27-Sep-2016
• Due Date: 02-Oct-2016
• Completion Date: 27-Sep-2016
• 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
• Directive: 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: prEN 442-1 rev - Radiators and convectors - Part 1: Technical specifications and requirements

Relations

• Merged Into: SIST EN 442-1:2015 - Radiators and convectors - Part 1: Technical specifications and requirements
• Effective Date: 07-Mar-2023
• Revised: SIST EN 442-1:1997/A1:2004 - Radiators and convectors - Part 1: Technical specifications and requirements
• Effective Date: 18-Jan-2023
• Revised: SIST EN 442-1:1997 - Radiators and convectors - Part 1: Technical specifications and requirements
• Effective Date: 08-Jun-2022
• Revised: SIST EN 442-1:1997/A1:2004 - Radiators and convectors - Part 1: Technical specifications and requirements
• Effective Date: 18-Oct-2010
• Revised: SIST EN 442-1:1997 - Radiators and convectors - Part 1: Technical specifications and requirements
• Effective Date: 22-Dec-2008
• Child: SIST EN 442-1:2015 - Radiators and convectors - Part 1: Technical specifications and requirements
• Effective Date: 13-Jun-2012

Overview

The oSIST prEN 442-1:2011 is a European Standard developed by CEN (European Committee for Standardization) focusing on radiators and convectors used in central heating systems for residential buildings. This standard defines technical specifications and requirements for products installed permanently in construction works, operating with water or steam temperatures below 120 °C, supplied by a remote heat source.

Key goals of oSIST prEN 442-1:2011 include ensuring safety, reliability, and performance consistency of heating appliances, while providing manufacturers and trade operators with common data for correct product application. It is part of a multipart series including testing methods and conformity evaluation.

Key Topics

• Scope and Coverage

  • Applies to radiators and convectors used in central heating systems of residential buildings.
  • Covers components installed permanently and excludes independent heating appliances.
  • Focus on products fed with water or steam below 120 °C.

• Material Specifications and Construction

  • Materials include low carbon steel for steel radiators, grey cast iron, cast aluminium, extruded aluminium, and tubular components.
  • Minimum wall thickness requirements established for each material type (e.g., steel radiators ≥1.11 mm, cast iron ≥2.5 mm).
  • Supports use of additional materials meeting equivalent strength, stability, and fire reaction criteria.

• Pretreatment and Surface Coating

  • Protective coatings must provide corrosion resistance after 100 hours of humidity exposure.
  • Paint finishes should withstand minor impact damage as per ISO 2409 standards.
  • Surface treatments must comply with applicable chemical regulations (e.g., REACH).

• Dimensional Tolerances and Pressure Testing

  • Strict dimensional tolerances aligned with manufacturer drawings and EN 442-2:2010.
  • Leak testing at minimum 1.3 times maximum operating pressure (≥520 kPa).
  • Burst strength testing ensures deformation without rupture at higher pressures.

• Thermal Performance and Output

  • Thermal output measured under standardized testing methods per prEN 442-2.
  • Tests define characteristic equations for thermal output and water content for product design use.
  • Manufacturers must implement dimensional quality control to maintain consistency.

• Marking and Labelling

  • Clear identification codes and technical data essential for traceability and appropriate use.
  • Information includes thermal output, dimensions, maximum operating pressure, and temperature ratings.

Applications

This standard is critical for:

• Manufacturers
  Ensuring all radiators and convectors meet minimum safety, dimensional, and performance requirements before market release.

• Heating System Designers and Engineers
  Selecting compliant and reliable radiators or convectors for residential central heating projects based on standardized technical data.

• Trade and Distributors
  Understanding product specifications to provide accurate information and guarantee correct application and installation.

• Regulatory Compliance Specialists
  Verifying adherence to EU Construction Products Directive requirements through specified attestation and CE marking processes.

Related Standards

oSIST prEN 442-1:2011 forms part of a comprehensive framework covering radiators and convectors:

• prEN 442-2:2010 – Testing and rating methods for thermal output and performance verification.
• prEN 442-3:2010 – Evaluation of conformity and quality assurance processes.
• EN 13501-1 – Fire classification of construction products related to reaction to fire testing.
• EN 10130 & EN 10131 – Material standards for steel used in radiator manufacturing.
• EN 573-3 – Chemical composition requirements for aluminium alloys in heating products.
• ISO 2409 – Paints and varnishes cross-cut test for coating durability.

---

By adhering to oSIST prEN 442-1:2011, manufacturers and users ensure the production and application of radiators and convectors meet stringent European safety and performance standards, supporting efficient and safe residential heating systems with reliable thermal outputs and durable construction.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2011
2JUHYDODLQNRQYHNWRUMLGHO7HKQLþQHVSHFLILNDFLMHLQ]DKWHYH
Radiators and convectors - Part 1: Technical specifications and requirements
Heizkörper und Konvektoren - Teil 1: Technische Spezifikationen und Anforderungen
Radiateurs et convecteurs - Partie 1: Spécifications et exigences techniques
Ta slovenski standard je istoveten z: prEN 442-1 rev
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 442-1:1995
English Version
Radiators and convectors - Part 1: Technical specifications and
requirements
Radiateurs et convecteurs - Partie 1: Spécifications et Heizkörper und Konvektoren - Teil 1: Technische
exigences techniques Spezifikationen und Anforderungen
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 442-1 rev:2010: E
worldwide for CEN national Members.

prEN 442-1:2010 (E)
Contents Page
Foreword . 3
Introduction . 4
1 Scope . 4
2 Normative references . 4
3 Definitions, symbols and units of measurement . 5
4 Pretreatment and paint . 5
5 Dimensional tolerances and pressure tightness . 5
5.1 Material specification and wall thickness of wet heating surface . 5
5.1.1 Steel radiators (radiators manufactured from steel sheet or coil) . 5
5.1.2 Cast-iron radiators . 5
5.1.3 Cast aluminium radiators . 5
5.1.4 Extruded aluminium radiators . 6
5.1.5 Tubular radiators . 6
5.1.6 Finned tube convectors . 6
5.1.7 Reaction to fire . 6
5.1.8 Other materials . 6
5.2 Leak testing . 6
5.3 Strength pressure testing . 7
5.4 Surface defects . 7
6 Thermal output . 7
6.1 Test method and laboratory . 7
6.2 Aim of the test programme . 7
6.3 Test data . 7
6.4 Test report . 7
6.5 Dimensional control by the manufacturer . 7
7 Catalogue data . 8
7.1 General . 8
7.2 Identification code of the heating appliance . 8
7.3 Thermal output . 8
7.4 Dimensions . 8
7.4.1 Radiators. 8
7.4.2 Convectors . 9
7.5 Maximum operating pressure . 9
7.6 Maximum operating temperature . 9
7.7 Catalogue reference data . 9
8 Marking and labelling . 9
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the
EU Construction Products Directive . 10
ZA.1 Scope and relevant characteristics . 10
ZA.2 Procedures for attestation of conformity of radiators and convectors . 11
ZA.2.1 System of attestation of conformity . 11
ZA.2.2 Declaration of conformity . 12
ZA.3 CE marking . 12
Bibliography . 14

prEN 442-1:2010 (E)
Foreword
This document (prEN 442-1:2010) 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- 1:1995, EN 442-1:1995/A1:2003.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.

prEN 442-1:2010 (E)
Introduction
This European Standard of radiators and convectors consists of the following Parts:
- Part 1: Technical specifications and requirements;
- Part 2: Testing and rating methods;
- Part 3: Evaluation of conformity.
1 Scope
This European Standard defines the technical specifications and requirements of radiators and convectors
to be installed in central heating systems in residential buildings.
Radiators and convectors are components for installation in a permanent manner in construction works.
This European Standard covers radiators and convectors fed with water or steam at temperatures below
120 °C, supplied by a remote heat source.
This European Standard does not apply to independent heating appliances.
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.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

prEN 442-2: 2010 Radiators and convectors - Part 2: Testing and rating methods
prEN 442-3:2010 Radiators and convectors – Part 3: Evaluation of conformity.
EN 573-3 Wrought aluminium and aluminium alloys - Chemical composition and forms of
products - Part 3: Chemical composition
EN 10130 Cold rolled low carbon steel flat products for cold forming; Technical delivery
conditions
EN 10131  Cold rolled unwanted low carbon and high yield strength steel flat products for cold
forming on dimensions shape
ISO 31-4: 1978 Quantities and units - Part 4: Heat
ISO 185: 1988 Grey cast iron - Classification
ISO 2409: 1992 Paints and varnishes - Cross-cut test
ISO EN 17025 General criteria for the operation of testing laboratories
EN 13501-1 Fire classification of construction products and building elements – Part 1:
Classification using test data from reaction to fire tests

prEN 442-1:2010 (E)
3 Definitions, symbols and units of measurement
See EN 442-2:
4 Pretreatment and paint
The pretreatment, paint processes and other surface finishing (chrome, polish etc.) used, shall provide a
protective coating to all external surfaces in contact with the air which shall as minimum requirement:
- give protection against corrosion in normal storage and installation conditions, as demonstrated by
absence of surface corrosion after 100 h humidity test according to EN 442-2 Annex L.
- for paint only, be resistant to minor impact damage according to ISO 2409. The test result shall be within
the first three steps (0-1-2) of table 1 of ISO 2409: 2007

The surface treatments shall not contain any chemical substances the use of which is not allowed in
building products
The compliance with the relevant Directive shall be stated by the manufacturer of the radiator/convector.

5 Dimensional tolerances and pressure tightness
The dimensional tolerances shall not be greater than those in the manufacturer's drawings. In any case
they shall not be greater than those given in table 3 of EN 442-2:

5.1 Material specification and wall thickness of wet heating surface
The following values for material thickness for steel radiators, tubular radiators and finned tube convectors
shall be measured before pressing or fabrication. Wall thickness of cast-iron, cast aluminium or extruded
aluminium radiators refers to the nominal drawing dimensions minus all admissible tolerances.

5.1.1 Steel radiators (radiators manufactured from steel sheet or coil)
The wet heating surface materials of steel radiators shall be low carbon steel sheet, which is free from
scale or rust and which complies with EN 10130 grade DC 01 and with EN 10131.
The thickness of the steel used for wet surfaces shall not be less than 1,11 mm.
The compliance with this requirement shall be verified by measurement.

5.1.2 Cast-iron radiators
Cast-iron radiators shall be manufactured from grey cast-iron complying with ISO 185.
The wet wall thickness shall not be less than 2,5 mm.
The minimum wall thickness shall be ensured by periodical controls of the casting equipment and daily
random production checks.
Compliance with this requirement shall be verified by measurement.

5.1.3 Cast aluminium radiators
2)
Cast aluminium alloy radiators shall be manufactured from alloy EN AB 46000 and EN AB46100 :

Also in relation to Regulation (EC) No 1907/2006 (REACH)
prEN 442-1:2010 (E)
The wet wall thickness shall not be less than 1,5 mm.
The minimum wall thickness shall be ensured by periodical controls of the casting equipment and daily
random production checks.
Compliance with this requirement shall be verified by measurement.

5.1.4 Extruded aluminium radiators
Extruded aluminium alloy radiators shall be manufactured from wrought aluminium alloy EN AW-6060 of
the EN 573-3 corresponding to the alloy AIMgSi.
The wet wall thickness shall not be less than 1,1 mm.
The minimum wall thickness shall be ensured by periodical controls of the extruder and daily random
production checks.
Compliance with this requirement shall be verified by measurement.

5.1.5 Tubular radiators
The material specification and gauge of tubes used in manufacture will be dependent on the tube size and
profile and on the process of assembly.
They shall nevertheless be sufficient to satisfy the genera
...