EN 14037-2:2013

Free hanging heating and cooling surfaces for water with a temperature below 120 °C - Part 2: Test method for thermal output of ceiling mounted radiant panels

This European Standard describes the test method and the test installation for determining the thermal output of ceiling mounted radiant panels according to the specifications of prEN 14037-1:2011, 3.3.1.

An der Decke frei abgehängte Heiz- und Kühlflächen für Wasser mit einer Temperatur unter 120 °C - Teil 2: Prüfverfahren für die Wärmeleistung von Deckenstrahlplatten

Diese Europäische Norm legt die Prüfverfahren und die Prüfeinrichtung zur Bestimmung der Wärmeleistung von Deckenstrahlplatten gemäß den Angaben in prEN 14037-1, Abschnitt 3.3.1, fest.

Panneaux rayonnants de chauffage et de rafraîchissement alimentés avec une eau à une température inférieure à 120 °C - Partie 2: Méthodes d'essai pour la détermination de la puissance thermique des panneaux rayonnants de plafond

La présente Norme européenne définit la méthode d'essai ainsi que l'installation d'essai pour la détermination de la puissance thermique des panneaux rayonnants de plafond selon les spécifications du Paragraphe 3.3.1 de l’EN  14037-1.

Stropne sevalne plošče za ogrevanje in hlajenje površin za vodo s temperaturo pod 120° C - 2. del: Preskusna metoda toplotne moči stropnih sevalnih plošč

General Information

• Status: Not Published
• Publication Date: 28-Jul-2013
• Withdrawal Date: 30-Jan-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 7 - Pre-fabricated heating panels, definitions, testing and methods for determining heat outputs
• Current Stage: 5098 - Decision to abandon - Formal Approval
• Start Date: 02-Jul-2014
• Completion Date: 14-Apr-2025
• Ref Project: kSIST FprEN 14037-2:2013 - Free hanging heating and cooling surfaces for water with a temperature below 120°C - Part 2: Test method for thermal output of ceiling mounted radiant panels

Relations

• Revises: EN 14037-2:2003 - Ceiling mounted radiant panels supplied with water at temperature below 120 °C - Part 2: Test method for thermal output
• Effective Date: 18-Jan-2023

Overview

EN 14037-2:2013 is a European Standard developed by CEN that specifies the test method for determining the thermal output of ceiling mounted radiant panels. These panels operate with water temperatures below 120 °C. This standard forms part two of the EN 14037 series, focusing specifically on the testing procedure and installation setup for accurate measurement of thermal output, aligning with the technical requirements established in EN 14037-1.

With increasing demand for energy-efficient heating and cooling systems, ceiling mounted radiant panels offer a versatile solution in modern building climate control. EN 14037-2:2013 facilitates uniform, reliable, and replicable testing conditions for these panels, ensuring comparability between different manufacturers and products across Europe.

Key Topics

• Scope and Purpose
  Defines a standardized test method to quantify the thermal output of free-hanging ceiling mounted radiant panels using water below 120 °C.

• Test Booth Specifications
  Describes a controlled test environment-a closed booth with chilled surrounding surfaces to simulate realistic operational conditions. The booth dimensions are precisely defined (4 m x 4 m x 3 m), with smooth matte-coated inside surfaces having a minimum emissivity of 0.9. Air infiltration minimization and temperature uniformity of the booth surfaces are mandatory to ensure test accuracy.

• Measurement Techniques
  The core method involves measuring the mass flow and enthalpy difference between the inlet and outlet water using a weighing method. Temperature sensors are strategically placed for measuring air temperature (protected against radiation), surface temperatures, and reference room temperature - notably using a globe thermometer suspended centrally below the radiant panel.

• Master Panels
  Utilizes standardized “master panels” as reference models within the testing system, ensuring repeatability and reproducibility of measurements across laboratories. These panels have specifically defined dimensions, materials, and hydraulic configurations.

• Test Procedure and Reporting
  Details the process steps from sample selection, arrangement within the booth, test conditions (flow rates, temperatures, steady-state operation), to data collection and the formulation of characteristic equations describing thermal output. The standard also requires comprehensive documentation via a formalized test report template for traceability.

Applications

• Product Certification and Comparison
  Manufacturers of ceiling mounted radiant heating and cooling panels use EN 14037-2:2013 to certify their products’ thermal performance according to European norms, facilitating market access and customer confidence.

• Building Design and HVAC Engineering
  Engineers and architects rely on the standardized thermal output values determined by this test method to design efficient HVAC systems, optimize energy consumption, and ensure comfort in residential, commercial, and industrial buildings.

• Research and Development
  Testing in line with EN 14037-2 supports R&D efforts aimed at improving radiant panel designs, materials, and integration with low-temperature water systems, contributing to advances in sustainable heating and cooling technologies.

Related Standards

• EN 14037-1: Technical specifications and requirements for free-hanging heating and cooling surfaces using water below 120 °C.

• EN 14037-3: Rating method and evaluation of radiant thermal output of ceiling mounted panels using standardized data.

• EN 14037-4: Test method for cooling capacity of ceiling mounted radiant panels.

• EN 14037-5: Test method for thermal output of open or closed heated ceiling surfaces.

• prEN 442-2: Radiators and convectors – Part 2: test methods and ratings.

• EN ISO/IEC 17025: General requirements for the competence of testing and calibration laboratories, ensuring reliable test results.

Summary

EN 14037-2:2013 provides a clear and comprehensive framework for measuring the thermal output of ceiling mounted radiant panels operated with water below 120 °C. By standardizing test conditions, measurement techniques, and reporting requirements, it enables consistent product evaluation and supports efficient, reliable heating and cooling system design. Adherence to this standard is essential for manufacturers, testing laboratories, and HVAC professionals aiming to meet European market standards and advance energy-efficient climate control technologies.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 14037-2:2012
01-januar-2012
6WURSQHVHYDOQHSORãþH]DRJUHYDQMHLQKODMHQMHSRYUãLQ]DYRGRVWHPSHUDWXUR
SRGƒ&GHO3UHVNXVQDPHWRGDWRSORWQHPRþLVWURSQLKVHYDOQLKSORãþ
Free hanging heating and cooling surfaces for water with a temperature below 120°C -
Part 2: Test method for thermal output of ceiling mounted radiant panels
An der Decke frei abgehängte Heiz- und Kühlflächen für Wasser mit einer Temperatur
unter 120°C - Teil 2: Prüfverfahren für die Wärmeleistung von Deckenstrahlplatten
Panneaux rayonnants de plafond alimentés en eau à une température inférieure à 120°C
- Partie 2: Méthodes d'essai pour la détermination de la puissance thermique
Ta slovenski standard je istoveten z: prEN 14037-2
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
91.140.65 Oprema za ogrevanje vode Water heating equipment
oSIST prEN 14037-2:2012 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 14037-2:2012
oSIST prEN 14037-2:2012
EUROPEAN STANDARD
DRAFT
prEN 14037-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2011
ICS 91.140.10 Will supersede EN 14037-2:2003
English Version
Free hanging heating and cooling surfaces for water with a
temperature below 120°C - Part 2: Test method for thermal
output of ceiling mounted radiant panels
Panneaux rayonnants de chauffage et de rafraîchissement An der Decke frei abgehängte Heiz- und Kühlflächen für
alimentés avec une eau à une température inférieure à 120 Wasser mit einer Temperatur unter 120 °C - Teil 2:
°C - Partie 2: Méthodes d'essai pour la détermination de la Prüfverfahren für die Wärmeleistung von
puissance thermique des panneaux rayonnants de plafond Deckenstrahlplatten
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
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14037-2:2011: E
worldwide for CEN national Members.

oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
Contents
Foreword . 4
Introduction . 5
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Testing of thermal output . 5
5 Test booth . 6
5.1 Dimensions of the test booth . 7
5.2 Emissivity of the inside surrounding surfaces . 8
5.3 Tightness of the test booth . 8
5.4 Cooling system . 8
5.5 Temperature measuring points . 8
5.5.1 Reference room temperature . 8
5.5.2 Air temperature . 9
5.5.3 Surface temperature of the inside surfaces . 10
6 Master Panels . 11
6.1 General . 11
6.2 Determination of the value ΦΦΦΦ of master panels (Primary set) . 11
M,s
6.3 Construction details . 11
6.3.1 Dimensions . 11
6.3.2 Material . 11
6.3.3 Construction . 11
6.3.4 Dimensional verification . 11
6.4 Verification of test installation, repeatability and reproducibility . 17
7 Test methods . 18
7.1 General . 18
7.2 Weighing method . 18
7.3 Measurement of the inlet and outlet temperatures . 19
7.4 Measurement of the control temperatures . 19
7.5 Uncertainty of the measured thermal output . 19
7.6 Air pressure . 19
8 Carrying out the measurement . 20
8.1 Dimensions and construction of the test samples . 20
8.2 Selection of the models to be tested for determining the thermal output of a type . 20
8.3 Manufacturer documents for the test samples . 20
8.4 Arrangement of the sample in the test booth . 20
8.5 Upper insulation of the test sample . 22
8.6 Connection of the test sample to the measuring circuit . 22
8.7 Tests . 22
8.8 Mass flow . 23
8.9 Test temperatures . 23
8.10 Steady state conditions . 23
8.11 Correction due to the air pressure . 23
8.12 Result of measurement – Characteristic equation . 23
9 Test report . 24
9.1 General . 24
9.2 Data . 24
Annex A (normative) Dimensional verification of master panels . 25
A.1 Determination ΦΦΦΦ  -values of the master panels (primary set) . 25
M,s
A.2 Dimensional verification and manufacturing certification for master panel 1 . 25
oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
A.3 Dimensional verification and manufacturing certification for master panel 2 . 27
Annex B (informative) Temperature measuring device . 30
Annex C (normative) Least squares regression for a model . 31
Annex D (informative) Specimen of the test report for heating capacity . 32
Bibliography . 35

oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
Foreword
This document (prEN 14037-2:2011) 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 14037-2:2003.
The main changes are:
- the title has been changed,
- a new Master panel 2 has been added,
- the chapter 9 "Test Report" has been reworked.
oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
Introduction
This European Standard results from the recognition that the ceiling mounted heating and cooling surfaces falling
into the field of application hereinafter stated are traded of the basis of their thermal and cooling output. For evalu-
ating and comparing different ceiling mounted radiant panels it is therefore necessary to refer to a single stipulated
value.
The European Standard EN 14037, Free hanging heating and cooling surfaces for water with a temperature below
120°C consists of the following parts:
- Part 1: Technical specifications and requirements
- Part 2: Test method for thermal output of ceiling mounted radiant panels
- Part 3: Rating method and evaluation of radiant thermal output of ceiling mounted radiant panels
- Part 4: Test method for cooling capacity of ceiling mounted radiant panels
- Part 5: Test method for thermal output of open or closed heated ceiling surfaces

1 Scope
This European Standard describes the test method and the test installation for determining the thermal output of
ceiling mounted radiant panels according to the specifications of prEN 14037-1, clause 3.3.1.
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, Radiators and convectors – Part 2: Test methods and rating
prEN 14037-1, Free hanging heating and cooling surfaces for water with a temperature below 120°C - Part 1:
Technical specifications and requirements
prEN 14037-3, Free hanging heating and cooling surfaces for water with a temperature below 120°C – Part 3: Rat-
ing method and evaluation of radiant thermal output of ceiling mounted radiant panels
EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories
(ISO/IEC 17025:1999)
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in prEN 14037-1 apply.
4 Testing of thermal output
The test is carried out in a testing system, which consists of a closed booth with controlled temperatures of the in-
side surfaces plus a set of two master panels built according to clause 6.
oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
The method for measuring the thermal output consists of the measurement of mass flow and enthalpy difference
between inlet and outlet (by weighing method). Other measurement methods shall guarantee in minimum the pre-
cision obtained by weighing method.
All laboratories that make tests according this standard have to make comparable measurements with the other
laboratories (according to clause 6 of this standard).
5 Test booth
The booth for testing ceiling mounted radiant panels shall be constructed in a way that all six surrounding surfaces
can be chilled.
Figure 1 shows the schematic lay-out of a test booth with a six-wall cooling. The walls are defined as follows:
Wall 1: the wall parallel to the inlet header
Wall 2: the wall to the right of wall 1
Wall 3: the wall opposite of wall 1
Wall 4: the wall to the left of wall 1
Wall 5: the floor
Wall 6: the ceiling
oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
Key
C Cooling circuit connection
I Inlet cooling water
O Outlet cooling water
A Cooling water accumulator
P Circulating pump
H After heater
1.6 Designation of the surrounding inside surfaces
Figure 1 — Example of the hydraulic system of a test booth
5.1 Dimensions of the test booth
The test booth has to have the following inside dimensions:
Length: (4 ± 0,02) m
Width: (4 ± 0,02) m
Height: (3 ± 0,02) m
oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
5.2 Emissivity of the inside surrounding surfaces
Walls, ceiling and floor shall have smooth inside surfaces covered with a coat of mat paint having a degree of
emissivity of minimum 0,9.
5.3 Tightness of the test booth
The test booth construction shall be sufficiently tight to prevent air infiltration.
5.4 Cooling system
The cooling system is to be carried out in order, that the difference between the 6 chilled surrounding inside sur-
faces of the test booth and the average temperature of all 6 surfaces is not higher than 0,5 K. The temperature dif-
ference between inlet and outlet shall not be higher then 0,5 K. That condition shall be maintained at the tests for
the determination of the characteristic equation.
5.5 Temperature measuring points
5.5.1 Reference room temperature
The reference room temperature is measured on at a height of 0,75 m above the floor of the test booth by means of
a globe thermometer (see Figure 2). The measuring point is situated on the vertical axis through the central point of
the ceiling mounted radiant panel.

Dimensions in millimetres
Key
1 Temperature measuring point
Figure 2 — Globe thermometer
Temperature sensor with blackened light metal sphere (diameter 150 mm, emissivity 0,9). The measuring point is
arranged in the centre of the sphere. The penetration of the temperature sensor through the surface of the sphere
runs horizontally and is air tight. The hollow sphere is attached to the temperature sensor.
oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
5.5.2 Air temperature
The air temperature is measured with sensors protected against radiation (see Figure 3).
The measuring points are situated on 2 vertical axes at 3 different heights as shown in Figure 4.

Dimensions in millimetres
Key
1 Temperature measuring point
H Height of the measuring point
Figure 3 — Example of a measuring point protected against radiation
oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
Dimensions in millimetres
Key
1 Air temperature measuring points
2 Reference room temperature measuring point
3 Ceiling mounted radiant panel
4 Axes of air temperature measuring points
Figure 4 — Arrangement of measuring points for the reference room temperature and for air temperature

5.5.3 Surface temperature of the inside surfaces
The surface temperatures of the inside walls is calculated as average value of the inlet and outlet water tempera-
ture of each single surface wall.
oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
6 Master Panels
The master panels which are part of the testing system consist of a model with a full direct heating surface with a
width of 1190 mm (master panel 1) and of a model with 3 tubes and a radiant sheet as indirect heating surface with
a width of 300 mm.
6.1 General
The purpose of the master panels is the following:
a) to verify if the reproducibility of test values among test laboratories is within the limits set by this European
Standard;
b) to establish a common basis for all test installations to verify that the repeatability of test values in each test
installation is within the limits set by this European Standard.
To verify the reproducibility among test installations built according to prEN 14037-2 a single set of master panels
constructed and verified according to prEN 14037-2 will be circulated among test installations to determine the
relevant Φ and Φ values. This single set of master panels is named "primary set".
M,s O,s
Each laboratory shall equip itself with the master panel 2 constructed and verified according to prEN 14037-2. This
panel named "secondary set" shall be used to verify the repeatability of the test installation.
6.2 Determination of the value ΦΦΦΦ of master panels (Primary set)
M,s
The method of determination the value Φ of the master panel is contained in prEN 14037-2, annex A.
M,s
6.3 Construction details
6.3.1 Dimensions
The main dimensions of the two master panels are given in the drawings Figures 5 to 10.
6.3.2 Material
The master panels shall be constructed from the materials St 37 stated in the drawings Figures 5 to 10.
6.3.3 Construction
Master panels shall be constructed according to the specifications contained in prEN 14037-2.
6.3.4 Dimensional verification
Master panels shall be dimensionally verified according to the procedure contained in prEN 14037-2 annex A and a
complete report as requested by prEN 14037-2 shall be prepared and kept available for any further check.

oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
Dimensions in millimetres
Key
a Detail B (see Figure 6)
1 Female screw socket 1”
2 L-profile 50 x 30 x 5
length 1120
3 Rectangular tube 70 x 11 x 2
Figure 5 — Master panel 1, projection and main dimensions
oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
Dimensions in millimetres
water circulation
Key
x Welding
Figure 6 — Master panel 1, details of headers, water circulation
oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
Dimensions in millimetres
Key
1 radiant sheet s = 1,25 mm Detail X lead through of tube register through front
2 front sheet s = 2,00 mm  sheet
3 tube register, rectangular tube Detail Y bores in the front sheet for hole -weldings
25 x 25 x 2, EN 10219-2 (30 x)
4 rectangular tube 45 x 45 x 2,5, EN 10219-2
5 eye for suspension welded
∅ ext. 32,5 mm; ∅ int. 22,5 mm; material ∅ 6 mm
6 header connection 1“ female
7 point welding front sheet / radiant sheet (at inner side)
Figure 7 — Master-panel 2, Isometric view

oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
Dimensions in millimetres
Key
1 radiant sheet s = 1,25 mm
2 front sheet s = 2,00 mm
3 tube register, rectangular tube
25 x 25 x 2, EN 10219-2
4 rectangular tube 45 x 45 x 2,5, EN 10219-2
5 eye for suspension welded
∅ ext. 32,5 mm; ∅ int. 22,5 mm; material ∅ 6 mm
6 header connection 1“ female
Figure 8 — Master-panel 2, projection and main dimensions

oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
Dimensions in millimetres
a) detail front sheet
b) detail radiant sheet                       c) detail connection tube
Key
1radiant sheet s = 1,25 mm 6 header connection 1“ female
2 front sheet s = 2,00 mm 7 socket welded
3 tube register, rectangular tube 25 x 25 x 2, EN 10219-2 8 baffle 100 % tide welded
4 rectangular tube 45 x 45 x 2,5, EN 10219-2 9 register tube welded
10 point welding front sheet / radiant sheet
5 eye for suspension welded ∅ ext. 32,5 mm; ∅ int. 22,5 mm;
material ∅ 6 mm
Figure 9 — Master-panel 2, Details of radiant sheet, front sheet and connecting tube

oSIST prEN 14037-2:2012
prEN 14037-2:2011 (E)
Dimensions in millimetres
Figure 10 — Master-panel 2, Detail of radiant sheet

6.4 Verification of test installation, repeatability and reproducibility
All test installations shall be verified for:
 constructional conformity: The laboratory shall state the conformity according to prEN 14037-2. Any statement
concerning thermal outputs shall be accompanied by a statement indicating the test conditions in which the
stated outputs have been obtained;
 repeatability: The repeatability precision shall be within an allowed tolerance s when testing a single master
panel in the same test installation at short or long intervals. The testing laboratory will use its own master panel
(secondary set) to determine the repeatability tolerance s of the test installation. Using this master panel, heat
output tests shall be carried out in accordance with clauses 7 and 8. The latest test for repeatability shall not
have taken place longer than 6 month before a thermal heat output test. The repeatability shall be tested every
12 month in minimum. To prove the repeatability precision of a test laboratory, the results of five consecutive
tests at the starting of the test installation shall be within a tolerance range s = 20 W according to 8.9;
 reproducibility: The reproducibility shall be proved by using the primary set of master panels. The test results
(carried out in accordance with 8.9) shall be within the tolerance s = ± 20 W of the Φ -value of each master
m M,s
panel.
The test laboratories have to proof the reproducibility in pe
...