CEN/TR 13582:2021

SLOVENSKI STANDARD
01-april-2021
Nadomešča:
SIST CR 13582:2001
Vgradnja merilnikov toplote - Smernice za izbiro, vgradnjo in delovanje merilnikov
toplote
Installation of thermal energy meters - Guidelines for the selection, installation and
operation of thermal energy meters
Installation von thermischen Energiemessgeräten - Richtlinien für Auswahl, Installation
und Betrieb von thermischen Energiemessgeräten
Compteur d’énergie thermique installation - Lignes directrices pour la sélection,
l’installation et le fonctionnement des compteurs d’énergie thermique
Ta slovenski standard je istoveten z: CEN/TR 13582:2021
ICS:
17.200.10 Toplota. Kalorimetrija Heat. Calorimetry
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TR 13582
TECHNICAL REPORT
RAPPORT TECHNIQUE
January 2021
TECHNISCHER BERICHT
ICS 17.200.10
English Version
Installation of thermal energy meters - Guidelines for the
selection, installation and operation of thermal energy
meters
Compteur d'énergie thermique installation - Lignes Installation von thermischen Energiemessgeräten -
directrices pour la sélection, l'installation et le Richtlinien für Auswahl, Installation und Betrieb von
fonctionnement des compteurs d'énergie thermique thermischen Energiemessgeräten

This Technical Report was approved by CEN on 4 January 2021. It has been drawn up by the Technical Committee CEN/TC 176.

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
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 13582:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Selecting a metering device for thermal energy . 7
4.1 General. 7
4.2 Metrological characteristics . 8
4.3 Environmental classifications . 8
5 Dimensioning . 9
5.1 General. 9
5.2 Determining the thermal energy power . 9
5.3 Thermal energy load . 9
5.4 Thermal energy power for water heating . 10
5.5 Thermal energy power for ventilation and air conditioning systems . 11
5.6 Thermal energy power for cooling systems . 11
5.7 Thermal energy power for engineering purposes . 11
6 Determining the flow rate . 12
6.1 Principles of thermodynamics . 12
7 Selecting a flow sensor for a thermal energy meter . 13
8 Checking the flow sensor design after commissioning . 14
8.1 General. 14
8.2 Operating conditions . 14
8.3 Flow sensors . 15
8.4 Temperature sensors . 20
8.5 Calculators . 23
9 Arranging of meters for thermal energy . 24
9.1 General. 24
9.2 Environment . 24
9.3 Flow sensors . 25
9.4 Temperature sensors . 28
9.5 Calculators . 32
10 Installing thermal energy meters . 33
10.1 General. 33
10.2 Mechanics . 33
10.3 Connecting to pipes . 33
10.4 Electrical connections . 33
10.5 Commissioning . 34
11 Monitoring operation . 34
11.1 General. 34
11.2 Measuring cooling supply using water or anti-freeze mixtures as medium . 34
11.3 Requirements for the system arrangement of cooling measurements . 39
12 Other liquids than water . 42
12.1 Introduction . 42
12.2 Physical impact . 42
12.3 Flow measurement . 44
12.4 Temperature difference measurement . 49
12.5 Calculator . 49
Bibliography . 50

European foreword
This document (CEN/TR 13582:2021) has been prepared by Technical Committee CEN/TC 176 “Thermal
energy meters”, the secretariat of which is held by SIS.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

Introduction
Metering devices for thermal energy (heat and cooling meters) are only working correctly and
consistently if the system design considers the minimum and maximum ratings for temperature,
temperature difference and flow rate according to the approved ranges. The metering device should be
selected for the approved legal range and the application area. The thermal energy meter should be
installed according to the valid requirements. During commissioning the thermal energy meter is checked
for both correct installation and full functionality and afterwards sealed against unauthorized opening.
According to the European harmonized standard EN 1434-6 a commissioning is obligatory to ensure that
the metering device accurately measures the planned or predicted consumption.
Installing the metering devices or their sub-assemblies incorrectly (e.g. an incorrect combination of
temperature sensors with non-approved pockets) does not guarantee the measuring accuracy. Hence,
the measurement deviations may exceed the permissible error limits. National calibration laws state that
the metering point operator should ensure that the metering device is set up, connected, handled and
maintained correctly to guarantee the measuring accuracy. Incorrect measurements result in bills that
cannot be used in business transactions.
The metering point operator is in district heating networks responsible for a proper installation and
commissioning of the metering devices. The metering point operator can also delegate this task to a
service company. The building owner or the building owner’s representative (e.g. a metering service
company) is in sub metering applications responsible for a proper installation and commissioning of the
metering devices.
The EN 1434 standards provide technical principles and practical advice in selecting, installing and
commissioning of thermal energy meters. However, because a standard cannot cover all areas
completely, this report shall assist users of thermal energy meters.
1 Scope
The EN 1434 standards provide technical principles and practical advice in selecting, installing and
commissioning of thermal energy meters. However, because a standard cannot cover all areas
completely, this document assists users of thermal energy meters.
2 Normative references
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
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1434-1, Thermal energy meters - Part 1: General requirements
EN 1434-2, Thermal energy meters - Part 2: Constructional requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1434-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
DH (network)
district heating system, DC: district cooling system
3.2
meter: thermal energy meter
heat meter or cooling meter
3.3
water
domestic water
3.4
hot water
domestic hot water
3.5
fluid additive
fluid used to supplement a shortage of the heat transfer medium due to leaks
3.6
fluid
heat transfer medium in a DH/DC system
3.7
MID
Measurement Instrument Directive 2014/32/EU
4 Selecting a metering device for thermal energy
4.1 General
A thermal energy meter consists of the following three parts: a flow sensor, a temperature sensor pair
and a calculator (see Figure 1).
These sub-assemblies can be defined as complete instruments, combined instrume
...