Air conditioners, liquid chilling packages and heat pumps for space heating and cooling and process chillers, with electrically driven compressors - Part 3: Test methods

1.1   Es gilt der Anwendungsbereich von EN 14511-1.
1.2   Diese Europäische Norm legt die Prüfverfahren für die Bemessung und Leistung von Luftkondi-tionierern, Flüssigkeitskühlsätzen und Wärmepumpen, die Luft, Wasser oder Sole als Wärmeträger nutzen und mit elektrisch angetriebenen Verdichtern betrieben werden, für die Raumbeheizung und -kühlung fest. Diese Prüfverfahren gelten auch für die Bemessung und Leistung von Prozess-Kühlern.
Sie legt weiterhin ein Verfahren zur Prüfung und Angabe von Wärmerückgewinnungsleistungen, systemreduzierten Leistungen sowie der Leistung von Einzelgeräten von Multi-Split-Systemen für die Aufstellung im Innenraum, soweit zutreffend, fest.
Diese Europäische Norm bietet außerdem die Möglichkeit, die Leistung von Multi-Split-Systemen und modularen Multi-Split-Systemen mit Wärmerückgewinnung durch getrennte Leistungsbemessung von Geräten für die Aufstellung im Innenraum und Geräten für die Außenaufstellung (Innen- und Außengeräte) zu bemessen.

Luftkonditionierer, Flüssigkeitskühlsätze und Wärmepumpen für die Raumbeheizung und -kühlung und Prozess-Kühler mit elektrisch angetriebenen Verdichtern - Teil 3: Prüfverfahren

1.1   Es gilt der Anwendungsbereich von FprEN 14511-1:2022.
1.2   Dieses Dokument legt die Prüfverfahren für die Bemessung und Leistung von Luftkonditionierern, Flüssigkeitskühlsätzen und Wärmepumpen, die Luft, Wasser oder Sole als Wärmeträger nutzen und mit elektrisch angetriebenen Verdichtern betrieben werden, für die Raumbeheizung und -kühlung fest. Diese Prüfverfahren gelten auch für die Bemessung und Leistung von Prozess-Kühlern.
Sie legt weiterhin ein Verfahren zur Prüfung und Angabe von Wärmerückgewinnungsleistungen, systemreduzierten Leistungen sowie der Leistung von Einzelgeräten von Multi-Split-Systemen für die Aufstellung im Innenraum, soweit zutreffend, fest.
Dieses Dokument bietet außerdem die Möglichkeit, die Leistung von Multi-Split-Systemen und modularen Multi-Split-Systemen mit Wärmerückgewinnung durch getrennte Leistungsbemessung von Geräten für die Aufstellung im Innenraum und Geräten für die Außenaufstellung (Innen- und Außengeräte) zu bemessen.

Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur pour le chauffage et le refroidissement des locaux et refroidisseurs industriels avec compresseur entraîné par moteur électrique - Partie 3 : Méthodes d'essai

1.1   Le domaine d'application de l’EN 14511-1:2022 est applicable.
1.2   Le présent document spécifie les méthodes d'essai pour la détermination des caractéristiques et des performances des climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur utilisant l'air, l'eau ou l'eau glycolée comme fluide caloporteur, avec compresseur entraîné par moteur électrique, lorsqu'ils sont utilisés pour le chauffage et le refroidissement des locaux. Ces méthodes d'essai s'appliquent également à la détermination des caractéristiques de performance des refroidisseurs industriels.
Elle spécifie aussi la méthode d'essai et le contenu du rapport pour les puissances calorifiques de récupération, les puissances réduites de système et la puissance individuelle des unités intérieures des systèmes multisplits, le cas échéant.
Le présent document permet également de déterminer les caractéristiques des systèmes multisplits et des systèmes multisplits modulaires à récupération de chaleur en considérant les unités intérieures et extérieures séparément.

Klimatske naprave, enote za hlajenje kapljevine, toplotne črpalke za ogrevanje in hlajenje prostora ter procesne hladilne naprave z električnimi kompresorji - 3. del: Preskusne metode

General Information

Status
Published
Public Enquiry End Date
02-May-2021
Publication Date
18-Sep-2022
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
14-Sep-2022
Due Date
19-Nov-2022
Completion Date
19-Sep-2022

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SLOVENSKI STANDARD
SIST EN 14511-3:2022
01-november-2022
Nadomešča:
SIST EN 14511-3:2018

Klimatske naprave, enote za hlajenje kapljevine, toplotne črpalke za ogrevanje in

hlajenje prostora ter procesne hladilne naprave z električnimi kompresorji - 3. del:

Preskusne metode

Air conditioners, liquid chilling packages and heat pumps for space heating and cooling

and process chillers, with electrically driven compressors - Part 3: Test methods

Luftkonditionierer, Flüssigkeitskühlsätze und Wärmepumpen für die Raumbeheizung und

-kühlung und Prozess-Kühler mit elektrisch angetriebenen Verdichtern - Teil 3:
Prüfverfahren

Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur pour le chauffage et

le refroidissement des locaux et refroidisseurs industriels avec compresseur entraîné par

moteur électrique - Partie 3 : Méthodes d'essai
Ta slovenski standard je istoveten z: EN 14511-3:2022
ICS:
23.120 Zračniki. Vetrniki. Klimatske Ventilators. Fans. Air-
naprave conditioners
27.080 Toplotne črpalke Heat pumps
91.140.30 Prezračevalni in klimatski Ventilation and air-
sistemi conditioning systems
SIST EN 14511-3:2022 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN 14511-3:2022
---------------------- Page: 2 ----------------------
SIST EN 14511-3:2022
EN 14511-3
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2022
EUROPÄISCHE NORM
ICS 27.080; 91.140.30 Supersedes EN 14511-3:2018
English Version
Air conditioners, liquid chilling packages and heat pumps
for space heating and cooling and process chillers, with
electrically driven compressors - Part 3: Test methods

Climatiseurs, groupes refroidisseurs de liquide et Luftkonditionierer, Flüssigkeitskühlsätze und

pompes à chaleur pour le chauffage et le Wärmepumpen für die Raumbeheizung und -kühlung

refroidissement des locaux et refroidisseurs industriels und Prozess-Kühler mit elektrisch angetriebenen

avec compresseur entraîné par moteur électrique - Verdichtern - Teil 3: Prüfverfahren

Partie 3 : Méthodes d'essai
This European Standard was approved by CEN on 10 July 2022.

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. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye 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

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14511-3:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 14511-3:2022
EN 14511-3:2022 (E)
Contents Page

European foreword ....................................................................................................................................................... 6

1 Scope .................................................................................................................................................................... 8

2 Normative references .................................................................................................................................... 8

3 Terms and definitions ................................................................................................................................... 8

4 Tests for determination of capacities ...................................................................................................... 8

4.1 Basic principles and methods ..................................................................................................................... 8

4.1.1 Air-to-air and water(brine)-to-air units ................................................................................................. 8

4.1.2 Air-to-water(brine) and water(brine)-to-water(brine) units ........................................................ 9

4.1.3 Capacity correction......................................................................................................................................... 9

4.1.4 Effective power input .................................................................................................................................. 12

4.1.5 Units on a distribution network of pressured water ...................................................................... 13

4.1.6 Units for use with remote condenser .................................................................................................... 13

4.2 Test apparatus............................................................................................................................................... 14

4.2.1 Arrangement of the test apparatus........................................................................................................ 14

4.2.2 Installation and connection of the test object.................................................................................... 14

4.3 Uncertainties of measurement ................................................................................................................ 17

4.4 Test procedure .............................................................................................................................................. 19

4.4.1 Settings ............................................................................................................................................................. 19

4.4.2 Output measurement for water (brine)-to-water (brine) and water (brine)-to-air

units .................................................................................................................................................................. 23

4.4.3 Output measurement for cooling capacity of air-to-water (brine) and air-to-air units ..... 23

4.4.4 Output measurement for heating capacity of air-to-air and air-to-water units .................... 24

4.4.5 Permissible deviations ............................................................................................................................... 29

4.5 Test results ..................................................................................................................................................... 32

4.5.1 Data to be recorded ..................................................................................................................................... 32

4.5.2 Cooling capacity and heat recovery capacity calculation .............................................................. 35

4.5.3 Heating capacity calculation .................................................................................................................... 35

4.5.4 Effective power input calculation........................................................................................................... 35

4.5.5 EER and COP calculation ............................................................................................................................ 35

5 Electrical consumptions for single duct and double duct units .................................................. 36

5.1 Determination of power consumption due to standby mode ...................................................... 36

5.2 Determination of power consumption in off-mode ......................................................................... 36

5.3 Electricity consumption ............................................................................................................................. 36

6 Air flow rate measurement of ducted units ........................................................................................ 36

7 Heat recovery test for air-cooled multisplit system ........................................................................ 37

7.1 Test installation ............................................................................................................................................ 37

7.1.1 General ............................................................................................................................................................. 37

7.1.2 Three-room calorimeter method ........................................................................................................... 37

7.1.3 Three-room air-enthalpy method .......................................................................................................... 37

7.1.4 Two-room air-enthalpy method ............................................................................................................. 37

7.2 Test procedure .............................................................................................................................................. 37

7.3 Test results ..................................................................................................................................................... 37

8 Test report ...................................................................................................................................................... 38

---------------------- Page: 4 ----------------------
SIST EN 14511-3:2022
EN 14511-3:2022 (E)

8.1 General information .................................................................................................................................... 38

8.2 Additional information ............................................................................................................................... 38

8.3 Rating test results ......................................................................................................................................... 38

Annex A (normative) Calorimeter test method .............................................................................................. 40

A.1 General ............................................................................................................................................................. 40

A.2 Calibrated room-type calorimeter ......................................................................................................... 42

A.3 Balanced ambient room-type calorimeter .......................................................................................... 43

A.4 Calculations-cooling capacities ............................................................................................................... 43

A.4.1 General ............................................................................................................................................................. 43

A.4.2 Total cooling capacity on the indoor-side ........................................................................................... 44

A.4.3 Total cooling capacity of liquid (water)-cooled equipment deducted from the

condenser side ............................................................................................................................................... 45

A.4.4 Latent cooling capacity (room dehumidifying capacity) ................................................................ 45

A.4.5 Sensible cooling capacity ........................................................................................................................... 45

A.4.6 Sensible heat ratio ........................................................................................................................................ 45

A.5 Calculation-heating capacities ................................................................................................................. 46

A.5.1 General ............................................................................................................................................................. 46

A.5.2 Determination of the heating capacity by measurements in the indoor-side room ............ 46

A.5.3 Determination of the heating capacity by measurements in the outdoor-side room ......... 46

A.5.4 Total heating capacity of liquid (water)-to-air unit deducted from the water side ............. 47

Annex B (normative) Indoor air enthalpy method ........................................................................................ 48

B.1 General ............................................................................................................................................................. 48

B.2 Test installation ............................................................................................................................................ 48

B.2.1 General ............................................................................................................................................................. 48

B.2.2 Air outlet section ........................................................................................................................................... 49

B.2.3 Air inlet section ............................................................................................................................................. 49

B.2.4 Discharge chamber design for non-ducted units .............................................................................. 49

B.2.5 Duct requirements for ducted units ...................................................................................................... 54

B.2.5.1 Air outlet duct ................................................................................................................................................ 54

B.2.5.2 Air inlet duct ................................................................................................................................................... 55

B.3 Calculations-cooling capacities ............................................................................................................... 55

B.4 Calculations-heating capacities ............................................................................................................... 56

Annex C (informative) Recommendations for reducing the indoor air enthalpy method

uncertainty ...................................................................................................................................................... 57

C.1 General ............................................................................................................................................................. 57

C.2 Uncertainty of measurement .................................................................................................................... 57

C.2.1 General ............................................................................................................................................................. 57

C.2.2 Guidance on temperature measurement ............................................................................................. 57

---------------------- Page: 5 ----------------------
SIST EN 14511-3:2022
EN 14511-3:2022 (E)

C.3 Air leakage tests ........................................................................................................................................... 62

C.4 Zero latent capacity confirmation .......................................................................................................... 64

C.5 Thermal loses from ducts, chambers and plenums ......................................................................... 64

Annex D (normative) Liquid enthalpy test method ...................................................................................... 65

D.1 General ............................................................................................................................................................. 65

D.2 Calculations-heating capacities .............................................................................................................. 65

D.3 Calculations-cooling capacities ............................................................................................................... 65

Annex E (informative) Test installation and measurements for the liquid enthalpy method ...... 66

E.1 General ............................................................................................................................................................. 66

E.2 Connecting the unit ..................................................................................................................................... 66

E.3 Liquid temperature measuring points ................................................................................................. 66

E.4 Pressure measuring points ....................................................................................................................... 68

E.5 Liquid flow rate measurement ................................................................................................................ 69

Annex F (normative) Determination of the liquid pump efficiency ........................................................ 70

F.1 General ............................................................................................................................................................. 70

F.2 Hydraulic power of the liquid pump ..................................................................................................... 70

F.2.1 The liquid pump is an integral part of the unit ................................................................................. 70

F.2.2 The liquid pump is not an integral part of the unit .......................................................................... 70

F.3 Efficiency of integrated pumps ................................................................................................................ 70

F.3.1 Glandless circulators .................................................................................................................................. 70

F.3.2 Dry motor pumps ......................................................................................................................................... 71

F.4 Efficiency of non-integrated pumps ...................................................................................................... 73

Annex G (informative) Rating of indoor and outdoor units of multisplit and modular heat

recovery multisplit systems ..................................................................................................................... 74

G.1 General ............................................................................................................................................................. 74

G.2 Terms and definitions ................................................................................................................................ 74

G.3 Rating of indoor units ................................................................................................................................. 75

G.3.1 General ............................................................................................................................................................. 75

G.3.2 Air flow rate measurement ....................................................................................................................... 75

G.3.3 Measurement of the power input of indoor units ............................................................................ 75

G.4 Rating of outdoor units .............................................................................................................................. 75

G.4.1 General ............................................................................................................................................................. 75

G.4.2 Test procedure .............................................................................................................................................. 75

Annex H (informative) Symbols used in annexes .......................................................................................... 77

Annex I (normative) Air flow rate measurement .......................................................................................... 79

I.1 General ............................................................................................................................................................. 79

I.2 Test installation ............................................................................................................................................ 79

I.3 Test conditions .............................................................................................................................................. 79

I.4 Air flow measurement ................................................................................................................................ 79

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SIST EN 14511-3:2022
EN 14511-3:2022 (E)

Annex J (informative) Conformance criteria ................................................................................................... 80

J.1 Water(brine)-to-water(brine) units ...................................................................................................... 80

J.2 Calorimeter room method ......................................................................................................................... 80

J.3 Heat recovery of multisplit systems ...................................................................................................... 80

Annex K (informative) Individual unit tests .................................................................................................... 81

K.1 General ............................................................................................................................................................. 81

K.1.1 Methods ............................................................................................................................................................ 81

K.1.2 Calorimeter method..................................................................................................................................... 81

K.1.3 Air-enthalpy method ................................................................................................................................... 81

K.2 Test results ...................................................................................................................................................... 81

K.3 Published results .......................................................................................................................................... 81

Annex ZA (informative) Relationship between this European Standard and the ecodesign

requirements of Commission Regulation (EU) No 206/2012 [OJEU L 72/7-27,

10.3.2012] aimed to be covered .............................................................................................................. 82

Annex ZB (informative) Relationship between this European Standard and the energy

labelling requirements of Commission Delegated Regulation (EU) No 626/2011

[OJEU L 178/1-72, 6.7.2011] aimed to be covered ........................................................................... 85

Annex ZC (informative) Relationship between this European Standard and the ecodesign

requirements of Commission Regulation (EU) No 2016/2281 [OJEU L346/1-50,

20.12.2016] aimed to be covered ........................................................................................................... 87

Bibliography ................................................................................................................................................................. 88

---------------------- Page: 7 ----------------------
SIST EN 14511-3:2022
EN 14511-3:2022 (E)
European foreword

This document (EN 14511-3:2022) has been prepared by Technical Committee CEN/TC 113 “Heat

pumps and air conditioning units”, the secretariat of which is held by UNE.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by March 2023, and conflicting national standards shall be

withdrawn at the latest by March 2023.

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.

This document supersedes EN 14511-3:2018.
The main changes compared with EN 14511-3:2018 are as follows:
— update of the flowchart with steps procedure;
— addition of new annexes for the liquid enthalpy test method;

— addition of a new Annex ZC on the relationship with Commission Regulation (EU) No 2016/2281.

This document has been prepared in the frame of:

— Commission Regulation (EU) No 206/2012 of 6 March 2012 implementing Directive 2009/125/EC

of the European Parliament and of the Council with regard to ecodesign requirements for air

conditioners and comfort fans;

— Commission Delegated Regulation (EU) No 626/2011 of 4 May 2011 supplementing Directive

2010/30/EU of the European Parliament and of the Council with regard to energy labelling of air

conditioners;

— Commission Regulation (EU) No 813/2013 of 2 August 2013 implementing Directive 2009/125/EC

of the European Parliament and of the Council with regard to ecodesign requirements for space

heaters and combination heaters;

— Commission Delegated Regulation (EU) No 811/2013 of 18 February 2013 supplementing Directive

2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of

space heaters, combination heaters, packages of space heater, temperature control and solar device

and packages of combination heater, temperature control and solar device;

— Commission Regulation (EU) 2015/1095 of 5 May 2015 implementing Directive 2009/125/EC of the

European Parliament and of the Council with regard to ecodesign requirements for professional

refrigerated storage cabinets, blast cabinets, condensing units and process chillers;

— Commission Regulation (EU) 2016/2281 of 30 November 2016 implementing Directive

2009/125/EC of the European Parliament and of the Council establishing a framework for the setting

of ecodesign requirements for energy-related products, with regard to ecodesign requirements for

air heating products, cooling products, high temperature process chillers and fan coil units.

---------------------- Page: 8 ----------------------
SIST EN 14511-3:2022
EN 14511-3:2022 (E)

This document has been prepared under a Standardization Request given to CEN by the European

Commission and the European Free Trade Association, and supports essential requirements of EU

Regulation(s).

For relationship with EU Regulation(s), see informative Annex ZA, ZB or ZC, which is an integral part of

this document.

EN 14511, Air conditioners, liquid chilling packages and heat pumps for space heating and cooling and

process chillers, with electrically driven compressors, currently comprises the following parts:

— Part 1: Terms and definitions;
— Part 2: Test conditions;
— Part 3: Test methods;
— Part 4: Requirements.

Any feedback and questions on this document should be directed to the users’ national standards body.

A complete listing of these bodies can be found on the CEN website.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: 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, Türkiye and the United

Kingdom.
---------------------- Page: 9 ----------------------
SIST EN 14511-3:2022
EN 14511-3:2022 (E)
1 Scope
1.1 The scope of EN 14511-1:2022 is applicable.

1.2 This document specifies the test methods for the rating and performance of air conditioners, liquid

chilling packages and heat pumps using either air, water or brine as heat transfer media, with electrically

driven compressors when used for space heating and cooling. These test methods also apply for the rating

and performance of process chillers.

It also specifies the method of testing and reporting for heat recovery capacities, system reduced

capacities and the capacity of individual indoor units of multisplit systems, where applicable.

This document also makes possible to rate multisplit and modular heat recovery m
...

SLOVENSKI STANDARD
oSIST prEN 14511-3:2021
01-april-2021

Klimatske naprave, enote za hlajenje kapljevine, toplotne črpalke za ogrevanje in

hlajenje prostora ter procesne hladilne naprave z električnimi kompresorji - 3. del:

Preskusne metode

Air conditioners, liquid chilling packages and heat pumps for space heating and cooling

and process chillers, with electrically driven compressors - Part 3: Test methods

Luftkonditionierer, Flüssigkeitskühlsätze und Wärmepumpen für die Raumbeheizung und

-kühlung und Prozess-Kühler mit elektrisch angetriebenen Verdichtern - Teil 3:
Prüfverfahren

Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur pour le chauffage et

le refroidissement des locaux et refroidisseurs industriels avec compresseur entraîné par

moteur électrique - Partie 3 : Méthodes d'essai
Ta slovenski standard je istoveten z: prEN 14511-3
ICS:
23.120 Zračniki. Vetrniki. Klimatske Ventilators. Fans. Air-
naprave conditioners
27.080 Toplotne črpalke Heat pumps
91.140.30 Prezračevalni in klimatski Ventilation and air-
sistemi conditioning systems
oSIST prEN 14511-3:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN 14511-3:2021
---------------------- Page: 2 ----------------------
oSIST prEN 14511-3:2021
DRAFT
EUROPEAN STANDARD
prEN 14511-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2021
ICS Will supersede EN 14511-3:2018
English Version
Air conditioners, liquid chilling packages and heat pumps
for space heating and cooling and process chillers, with
electrically driven compressors - Part 3: Test methods

Climatiseurs, groupes refroidisseurs de liquide et Luftkonditionierer, Flüssigkeitskühlsätze und

pompes à chaleur pour le chauffage et le Wärmepumpen für die Raumbeheizung und -kühlung

refroidissement des locaux et refroidisseurs industriels und Prozess-Kühler mit elektrisch angetriebenen

avec compresseur entraîné par moteur électrique - Verdichtern - Teil 3: Prüfverfahren

Partie 3 : Méthodes d'essai

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

CEN/TC 113.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey 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
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. prEN 14511-3:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 14511-3:2021
prEN 14511-3:2021 (E)
Contents

European foreword ....................................................................................................................................................... 6

1 Scope .................................................................................................................................................................... 7

2 Normative references .................................................................................................................................... 7

3 Terms and definitions ................................................................................................................................... 7

4 Tests for determination of capacities ...................................................................................................... 7

4.1 Basic principles and methods ..................................................................................................................... 7

4.1.1 Ait-to-air and water(brine)-to-air units ................................................................................................. 7

4.1.2 Air-to-water(brine) and water(brine)-to-water(brine) units ........................................................ 8

4.1.3 Capacity correction......................................................................................................................................... 8

4.1.4 Effective power input .................................................................................................................................. 10

4.1.5 Units on a distribution network of pressured water ...................................................................... 12

4.1.6 Units for use with remote condenser .................................................................................................... 12

4.2 Test apparatus............................................................................................................................................... 12

4.2.1 Arrangement of the test apparatus........................................................................................................ 12

4.2.2 Installation and connection of the test object.................................................................................... 13

4.3 Uncertainties of measurement ................................................................................................................ 15

4.4 Test procedure .............................................................................................................................................. 17

4.4.1 Settings ............................................................................................................................................................. 17

4.4.2 Output measurement for water (brine)-to-water (brine) and water (brine)-to-air

units .................................................................................................................................................................. 21

4.4.3 Output measurement for cooling capacity of air-to-water (brine) and air-to-air units ..... 22

4.4.4 Output measurement for heating capacity of air-to-air and air-to-water units .................... 22

4.5 Test results ..................................................................................................................................................... 27

4.5.1 Data to be recorded ..................................................................................................................................... 27

4.5.2 Cooling capacity and heat recovery capacity calculation .............................................................. 30

4.5.3 Heating capacity calculation .................................................................................................................... 30

4.5.4 Effective power input calculation........................................................................................................... 31

4.5.5 COP and EER calculation ............................................................................................................................ 31

5 Electrical consumptions for single duct and double duct units .................................................. 31

5.1 Determination of power consumption due to standby mode ...................................................... 31

5.2 Determination of power consumption in off-mode ......................................................................... 32

5.3 Electricity consumption ............................................................................................................................. 32

6 Air flow rate measurement of ducted units ........................................................................................ 32

7 Heat recovery test for air-cooled multisplit system ........................................................................ 32

7.1 Test installation ............................................................................................................................................ 32

7.1.1 General ............................................................................................................................................................. 32

7.1.2 Three-room calorimeter method ........................................................................................................... 33

7.1.3 Three-room air-enthalpy method .......................................................................................................... 33

7.1.4 Two-room air-enthalpy method ............................................................................................................. 33

7.2 Test procedure .............................................................................................................................................. 33

7.3 Test results ..................................................................................................................................................... 33

8 Test report ...................................................................................................................................................... 34

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8.1 General information .................................................................................................................................... 34

8.2 Additional information ............................................................................................................................... 34

8.3 Rating test results ......................................................................................................................................... 34

Annex A (normative) Calorimeter test method .............................................................................................. 36

A.1 General ............................................................................................................................................................. 36

A.2 Calibrated room-type calorimeter ......................................................................................................... 38

A.3 Balanced ambient room-type calorimeter .......................................................................................... 39

A.4 Calculations-cooling capacities ............................................................................................................... 39

A.4.1 General ............................................................................................................................................................. 39

A.4.2 Total cooling capacity on the indoor-side ........................................................................................... 40

A.4.3 Total cooling capacity of liquid (water)-cooled equipment deducted from the

condenser side ............................................................................................................................................... 41

A.4.4 Latent cooling capacity (room dehumidifying capacity) ................................................................ 41

A.4.5 Sensible cooling capacity ........................................................................................................................... 41

A.4.6 Sensible heat ratio ........................................................................................................................................ 41

A.5 Calculation-heating capacities ................................................................................................................. 42

A.5.1 General ............................................................................................................................................................. 42

A.5.2 Determination of the heating capacity by measurements in the indoor-side room ............ 42

A.5.3 Determination of the heating capacity by measurements in the outdoor-side room ......... 42

A.5.4 Total heating capacity of liquid (water)-to-air unit deducted from the water side ............. 43

Annex B (normative) Indoor air enthalpy method ........................................................................................ 44

B.1 General ............................................................................................................................................................. 44

B.2 Test installation ............................................................................................................................................ 44

B.2.1 General ............................................................................................................................................................. 44

B.2.2 Air outlet section ........................................................................................................................................... 45

B.2.3 Air inlet section ............................................................................................................................................. 45

B.2.4 Discharge chamber design for non-ducted units .............................................................................. 45

B.2.5 Duct requirements for ducted units ...................................................................................................... 49

B.2.5.1 Air outlet duct ................................................................................................................................................ 49

B.2.5.2 Air inlet duct ................................................................................................................................................... 49

B.3 Calculations-cooling capacities ............................................................................................................... 49

B.4 Calculations-heating capacities ............................................................................................................... 51

Annex C (informative) Recommendations for reducing the indoor air enthalpy method

uncertainty ...................................................................................................................................................... 52

C.1 General ............................................................................................................................................................. 52

C.2 Uncertainty of measurement .................................................................................................................... 52

C.2.1 General ............................................................................................................................................................. 52

C.2.2 Guidance on temperature measurement ............................................................................................. 52

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C.2.2.1 General ............................................................................................................................................................. 52

C.2.2.2 Measuring device ......................................................................................................................................... 53

C.2.2.3 Dry and wet bulb sensors .......................................................................................................................... 56

C.2.2.4 Calibration and zero point check ........................................................................................................... 57

C.2.2.5 Twin sensors approach .............................................................................................................................. 57

C.3 Air leakage tests ........................................................................................................................................... 57

C.4 Zero latent capacity confirmation .......................................................................................................... 59

C.5 Thermal loses from ducts, chambers and plenums ......................................................................... 59

Annex D (normative) Liquid enthalpy test method ...................................................................................... 60

D.1 General ............................................................................................................................................................. 60

D.2 Calculations-heating capacities .............................................................................................................. 60

D.3 Calculations-cooling capacities ............................................................................................................... 61

Annex E (informative) Test installation and measurements for the liquid enthapy method ....... 62

E.1 General ............................................................................................................................................................. 62

E.2 Connecting the unit ..................................................................................................................................... 62

E.3 Liquid temperature measuring points ................................................................................................. 62

E.4 Pressure measuring points ....................................................................................................................... 64

E.5 Liquid flow rate measurement ................................................................................................................ 65

Annex F (normative) Determination of the liquid pump efficiency ........................................................ 66

F.1 General ............................................................................................................................................................. 66

F.2 Hydraulic power of the liquid pump ..................................................................................................... 66

F.2.1 The liquid pump is an integral part of the unit ................................................................................. 66

F.2.2 The liquid pump is not an integral part of the unit .......................................................................... 66

F.3 Efficiency of integrated pumps ................................................................................................................ 66

F.3.1 Glandless circulators .................................................................................................................................. 66

F.3.2 Dry motor pumps ......................................................................................................................................... 67

F.4 Efficiency of non-integrated pumps ...................................................................................................... 69

Annex G (informative) Rating of indoor and outdoor units of multisplit and modular heat

recovery multisplit systems ..................................................................................................................... 70

G.1 General ............................................................................................................................................................. 70

G.2 Terms and definitions ................................................................................................................................ 70

G.3 Rating of indoor units ................................................................................................................................. 71

G.3.1 General ............................................................................................................................................................. 71

G.3.2 Air flow rate measurement ....................................................................................................................... 71

G.3.3 Measurement of the power input of indoor units ............................................................................ 71

G.4 Rating of outdoor units .............................................................................................................................. 71

G.4.1 General ............................................................................................................................................................. 71

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G.4.2 Test procedure .............................................................................................................................................. 71

Annex H (informative) Symbols used in annexes ........................................................................................... 72

Annex I (normative) Air flow rate measurement ........................................................................................... 74

I.1 General ............................................................................................................................................................. 74

I.2 Test installation ............................................................................................................................................ 74

I.3 Test conditions .............................................................................................................................................. 74

I.4 Air flow measurement ................................................................................................................................ 74

Annex J (informative) Conformance criteria ................................................................................................... 75

J.1 Water(brine)-to-water(brine) units ...................................................................................................... 75

J.2 Calorimeter room method ......................................................................................................................... 75

J.3 Heat recovery of multisplit systems ...................................................................................................... 75

Annex K (informative) Individual unit tests .................................................................................................... 76

K.1 General ............................................................................................................................................................. 76

K.1.1 Methods ............................................................................................................................................................ 76

K.1.2 Calorimeter method..................................................................................................................................... 76

K.1.3 Air-enthalpy method ................................................................................................................................... 76

K.2 Test results ...................................................................................................................................................... 76

K.3 Published results .......................................................................................................................................... 76

Annex ZA (informative) Relationship between this European Standard and the

requirements of Commission regulation (EC) No 206/2012 aimed to be covered .............. 77

Annex ZB (informative) Relationship between this European Standard and the energy

labelling requirements of Commission Delegated Regulation (EU) No 626/2011

aimed to be covered ..................................................................................................................................... 80

Annex ZC (informative) Relationship between this European and the ecodesign

requirements of Commission Regulation (EU) No 2015/1095 aimed to be covered........... 82

Annex ZD (informative) Relationship between this European and the ecodesign

requirements of Commission Regulation (EU) No 2016/2281 aimed to be covered........... 84

Bibliography ................................................................................................................................................................. 86

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prEN 14511-3:2021 (E)
European foreword

This document (prEN 14511-3:2021) has been prepared by Technical Committee CEN/TC 113 “Heat

pumps and air conditioning units”, the secretariat of which is held by UNE.
This document is currently submitted to the Enquiry.
This document will supersede EN 14511-3:2018.
This document has been prepared in the frame of:

— the Commission Regulation (EU) No 206/2012 implementing Directive 2009/125/EC with regard to

ecodesign requirements for air conditioners;

— the Commission Regulation (EU) n° 626/2011 supplementing Directive 2010/30/EU with regard to

energy labelling for air conditioners;

— the Commission Regulation (EU) No 813/2013 implementing Directive 2009/125/EC with regard to

ecodesign requirements for air-to-water and water-to-water heat pump space heaters;

— the Commission Regulation (EU) n° 811/2013 supplementing Directive 2010/30/EU with regard to

energy labelling for air-to-water and water-to-water heat pump space heaters;

— the Commission Regulation (EU) n° 2015/1095 implementing Directive 2009/125/EC of the

European Parliament and of the Council with regard to ecodesign requirements for process chillers;

— Commission Regulation (EU) 2016/2281 implementing Directive 2009/125/EC of the European

Parliament and of the Council with regard to ecodesign requirements for air heating products,

cooling products, high temperature process chillers and fan coil units.

EN 14511, Air conditioners, liquid chilling packages and heat pumps for space heating and cooling and

process chillers, with electrically driven compressors currently comprises the following parts:

— Part 1: Terms and definitions
— Part 2: Test conditions
— Part 3: Test methods
— Part 4: Requirements
The main changes with respect to the previous edition are:
— update of the test procedure;
— addition of a new subclause on COP and EER calculation;

— update of the annexes on indoor air enthalpy test method and liquid enthalpy test method.

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(s), see informative Annex ZA, B, C or D, which is an integral part of this

document.
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oSIST prEN 14511-3:2021
prEN 14511-3:2021 (E)
1 Scope
1.1 The scope of prEN 14511-1:2021 is applicable.

1.2 This document specifies the test methods for the rating and performance of air conditioners, liquid

chilling packages and heat pumps using either air, water or brine as heat transfer media, with electrically

driven compressors when used for space heating and cooling. These test methods also apply for the rating

and performance of process chillers.

It also specifies the method of testing and reporting for heat recovery capacities, system reduced

capacities and the capacity of individual indoor units of multisplit systems, where applicable.

This document also makes possible to rate multisplit and modular heat recovery multisplit systems by

rating separately the indoor and outdoor units.
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.

prEN 14511-1:2021, Air conditioners, liquid chilling packages and heat pumps for space heating and

cooling and process chillers, with electrically driven compressors — Part 1: Terms and definitions

EN 14825:2018, Air conditioners, liquid chilling packages and heat pumps, with electrically driven

compressors, for space heating and cooling - Testing and rating at part load conditions and calculation of

seasonal performance
3 Terms and definitions
For the purposes of this document, the terms and defin
...

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