prEN 1264-5

SLOVENSKI STANDARD
oSIST prEN 1264-5:2020
01-januar-2020
Ploskovni sistemi za ogrevanje in hlajenje z vodo - 5. del: Grelne in hladilne
površine, vgrajene v tla, strop ali stene - Določevanje oddaje toplote
Water based surface embedded heating and cooling systems - Part 5: Heating and

cooling surfaces embedded in floors, ceilings and walls - Determination of the thermal

Raumflächenintegrierte Heiz- und Kühlsysteme mit Wasserdurchströmung - Teil 5: Heiz-

Systèmes de surfaces chauffantes et rafraîchissantes hydrauliques intégrées - Partie 5 :

Surfaces chauffantes et rafraîchissantes intégrées dans les sols, les plafonds et les murs

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Systèmes de surfaces chauffantes et rafraîchissantes Raumflächenintegrierte Heiz- und Kühlsysteme mit

hydrauliques intégrées - Partie 5 : Surfaces chauffantes Wasserdurchströmung - Teil 5: Heiz- und Kühlflächen

et rafraîchissantes intégrées dans les sols, les plafonds in Fußböden, Decken und Wänden - Bestimmung der

et les murs - Détermination de l'émission thermique Wärmeleistung und der Kühlleistung

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

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

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1264-5:2020 E

European foreword ....................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Calculation method ......................................................................................................................................... 6

5 Test report ......................................................................................................................................................... 6

Annex A (normative) Figures and tables ............................................................................................................. 8

Annex B (informative) Explanations concerning the specification of the heat exchange

coefficients of Table A.1 ............................................................................................................................. 10

Bibliography ................................................................................................................................................................. 11

This document (prEN 1264-5:2020) 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, Water based surface embedded heating and cooling systems, consists of the following

— Part 2: Floor heating: Methods for the determination of the thermal output using calculations and

— Part 5: Determination of the thermal output for wall and ceiling heating and for floor, wall and ceiling

EN 1264 is based on the realization that in the field of commercial trade the thermal output of heating

and cooling systems represents the basis of rating. In order to be able to evaluate and compare different

heating and cooling systems, it is, therefore, necessary to refer to values determined using one single,

unambiguously defined method. The basis for doing so are the test methods for the determination of the

thermal output of floor heating systems specified in EN 1264-2. In analogy to EN 442-2, Radiators and

convectors — Part 2: Test methods and rating, this test method provides characteristic partial load curves

under defined boundary conditions as well as the characteristic output of the system represented by the

standard thermal output together with the associated standard temperature difference between the

EN 1264 covers surface embedded heating and cooling systems installed in buildings, residential and

non-residential (e.g. office, public, commercial and industrial buildings) and focuses on systems installed

EN 1264 applies to water based heating and cooling systems embedded into the enclosure surfaces of the

room to be heated or to be cooled. It also applies as appropriate to the use of other heating media instead

EN 1264 applies to identify standardized product characteristics by calculation and testing the thermal

output of heating for technical specifications and certification. For the design, construction and operation

The systems covered in EN 1264 are adjoined to the structural base of the enclosure surfaces of the

building, mounted directly or with fixing supports. It does not cover ceiling systems mounted in a

suspended ceiling with a designed open air gap between the system and the building structure which

allows the thermally induced circulation of the air. The thermal output of these systems can be

EN 1264-5 deals with the recalculation of values determined in EN 1264-2 for the system in question. It

enables the conversion of the calculation and measurement results of EN 1264-2 into results for other

surface orientations in the room, i.e. for ceiling and wall heating, as well as for the application as cooling

surfaces, i.e. for floor, ceiling and wall cooling. The test results of EN 1264-2 are the basis of all calculation,

whether or not the system in question is used for heating or cooling application.

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For