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. EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
EN 14511-2
May 2004
ICS 23.120 Supersedes EN 12055:1998, EN 255-2:1997, EN 814-
2:1997
English version
Air conditioners, liquid chilling packages and heat pumps with
electrically driven compressors for space heating and cooling -
Part 2: Test conditions
Climatiseurs, groupes refroidisseurs de liquide et pompes ¨¤
chaleur avec compresseur entraîn¨¦ par moteur ¨¦lectrique
pour le chauffage et la r¨¦frig¨¦ration - Partie 2 : Conditions
d'essai
Luftkonditionierer, Fl¨¹ssigkeitsk¨¹hlsätze und
Wärmepumpen mit elektrisch angetriebenen Verdichtern
f¨¹r die Raumheizung und -k¨¹hlung - Teil 2:
Pr¨¹fbedingungen
This European Standard was approved by CEN on 30 April 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,
Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia,
Slovenia,Spain,Sweden,SwitzerlandandUnited Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved
worldwide for CEN national Members.
Ref. No. EN 14511-2:2004: E
EN 14511-2:2004 (E)
2
Contents
page
Foreword      .................. 3
1 Scope       .......... 4
2 Normative references      ........ 4
3 Terms and definitions     ....... 4
4 Test conditions      ................. 5
4.1 Environmental conditions and electrical power supply requirements  .................... 5
4.2 Rating conditions     .............. 5
Annex A (normative) Energy labelling application    .................12
A.1 General      ......12
A.2 Rating conditions     ............12
A.2.1General      ......12
A.2.2 Air-cooled air conditioners (air-to-air conditioners)    ..12
A.2.3 Single-duct air conditioners     ..................12
A.2.4 Water-cooled air conditioners (water-to-air conditioners)   ...............12
A.2.5 Other appliances     .............13
A.3 Test procedure      ................13
A.4 Tolerances permitted on declared values    ...................13
A.4.1 General      ......13
A.4.2 First testing     ......................13
A.4.3 Second testing      ................ 13
Annex ZA (informative) Relationship of this document with EC Directives   14
Bibliography     ...  ....... 15

3

Foreword
This document (EN 14511-2:2004) has been prepared by Technical Committee CEN/TC 113 ¡°Heat pumps
and air conditioning units¡±, the secretariat of which is held by AENOR.
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 November 2004, and conflicting national standards shall be withdrawn
at the latest by November 2004.
This document supersedes EN 255-2:1997, EN 814-2:1997, EN 12055:1998.
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, which is an integral part of this document.
This standard consists of the following parts:
Part 1: Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for
space heating and cooling - Part 1: Terms and definitions.
Part 2: Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for
space heating and cooling - Part 2: Test conditions.
Part 3: Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for
space heating and cooling - Part 3: Test methods.
Part 4: Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for
space heating and cooling - Part 4: Requirements.
Annex A is normative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.

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1 Scope
This part of EN 14511 specifies the test conditions for the rating of air and water cooled air conditioners, liquid
chilling packages, air-to-air, water-to-air, air-to-water and water-to-water heat pumps with electrically driven
compressors when used for space heating and/or cooling. It also specifies test conditions for heat recovery
operation of multisplit systems.
This European Standard applies to factory-made units that can be ducted.
This standard applies to factory-made liquid chilling packages with integral condensers or for use with remote
condensers.
This standard applies to factory-made units of either fixed capacity or variable capacity by any means.
Packaged units, single split and multisplit systems are covered by this standard, except water cooled multisplit
systems.
In the case of units consisting of several parts, the standard applies only to those designed and supplied as a
complete package, except for liquid chilling packages with remote condenser.
This standard is primarily intended for water and brine chilling packages but can be used for other liquid subject to
agreement.
This standard applies to air-to-air air conditioners which evaporate the condensate on the condenser side.
The units having their condenser cooled by air and by the evaporation of external additional water are not
covered by this standard.
This standard does not apply to units using transcritical cycles, e.g. with CO2 as refrigerant.
Installations used for heating and/or cooling of industrial processes are not within the scope of this standard.
NOTE Part load testing of units is dealt with in CEN/TS 14825.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text, and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to
this European Standard only when incorporated in it by amendment or revision. For undated references the
latest edition of the publication referred to applies (including amendments).
EN 14511-1:2004, Air conditioners, liquid chilling packages and heat pumps with electrically driven
compressors for space heating and cooling - Part 1: Terms and definitions.
EN 14511-3:2004, Air conditioners, liquid chilling packages and heat pumps with electrically driven
compressors for space heating and cooling - Part 3: Test methods.
EN 14511-4:2004, Air conditioners, liquid chilling packages and heat pumps with electrically driven
compressors for space heating and cooling - Part 4: Requirements.
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 14511-1:2004 apply.

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4 Test conditions
4.1 Environmental conditions and electrical power supply requirements
The tests shall be carried out under the environmental conditions specified in Table 1 or Table 2 depending on the
location of the unit.
For all units, electrical power voltage and frequency shall be given by the manufacturer

4.2 Rating conditions
For the rating tests, the appropriate test conditions shall be applied in accordance with:

Annex A
(normative)
Energy labelling application
A.1 General
The present standard shall be used to declare the energy efficiency class and to provide performance
characteristics of air conditioners and heat pumps under the scope of the Energy Labelling Directive
2002/31/EC, for both the labelling and the technical documentation.
A.2 Rating conditions
A.2.1General
The rating conditions for which the performance are declared are indicated in this standard and are specified
hereafter for each type of product covered by the energy labelling.
The performance rating shall be established in accordance with the test procedure of EN 14511-3.
A.2.2 Air-cooled air conditioners (air-to-air conditioners)
Standard rating conditions ¡°comfort¡± indicated in Table 4 shall be used to determine the cooling capacity, the
EER, the annual energy consumption and the efficiency class of single split and packaged air-cooled air
conditioners.
For reverse cycle units, the heating capacity and the efficiency class shall be determined from one of the
standard rating conditions indicated in Table 3 depending of the heat source and heat sink.
Standard rating conditions indicated in Table 14 shall be used to determine the cooling capacity, the EER, the
annual energy consumption and the efficiency class of multisplit air conditioners.
For reverse cycle units, the heating capacity and the efficiency class shall be determined from one of the
standard rating conditions indicated in Table 13.
A.2.3 Single-duct air conditioners
Standard rating conditions ¡°single-duct¡± indicated in Table 4 shall be used to determine the energy efficiency
class of single-duct units.
The cooling capacity, EER and the annual energy consumption shall be determined from the application rating
conditions ¡°single-duct¡± indicated in Table 4.
A.2.4 Water-cooled air conditioners (water-to-air conditioners)
Standard rating conditions ¡°comfort¡± indicated in Table 6 shall be used to determine the cooling capacity, the
EER, the annual energy consumption and the efficiency class of split and packaged water-cooled air
conditioners.
For reverse cycle units, the heating capacity and the efficiency class shall be determined from one of the
standard rating conditions indicated in Table 5 depending of the heat source: water, brine or close loop.
EN 14511-2:2004 (E)
13
A.2.5 Other appliances
Water-cooled multisplit to which Table 2.1 of Annex IV of Directive 2002/31/EC refers are not covered by
EN 14511.
Single-duct units operating in the heating mode to which Table 3.3 of Annex IV of Directive 2002/31/EC refers
are not covered by EN 14511.
A.3 Test procedure
When the present standard is used for the energy labelling of air conditioners and heat pumps below 12 kW,
the cooling / heating capacities, power input and EER/COP as well as the energy efficiency class of a product
shall be determined by using exclusively the calorimeter room method.
For ducted units, the settings of the air flow rate and external static pressure shall be made prior to the cooling
/ heating capacity tests, according to EN 14511-3:2004, 4.4.1. Once determined, the external static pressure
shall be maintained constant during the capacity tests, by adjusting to the air discharge area of the unit, a
length of duct equipped with a damper which position shall not be changed during the capacity tests.
The length of duct and the distance of the damper from the discharge section of the unit shall be conform to
the requirements of EN 14511-3:2004, B.2.1.
A.4 Tolerances permitted on declared values
A.4.1 General
The following requirements apply to the declared values.
The requirements for the uncertainties of measurement of 4.3 of EN 14511-3:2004 shall be respected.
A.4.2 First testing
The performance published data shall be accepted as valid when a sample of a model, tested in accordance
with the present standard, shall meet the following criteria for cooling and heating mode as applicable:
Tested cooling and heating capacity ³ 0,88 X declared capacity
Tested EER ³ 0,85 X declared EER
Tested COP ³ 0,85 X declared COP
A.4.3 Second testing
If the result of test on capacity and/or EER/COP carried out on the first appliance is not in compliance with the
requirements given in A.4.2, a second test shall be carried out on one other appliance. This second test shall
meet the following criteria for cooling and heating mode as applicable:
Tested cooling and heating capacity ³ 0,88 X declared capacity
Tested EER ³ 0,85 X declared EER
Tested COP ³ 0,85 X declared COP
EN 14511-2:2004 (E)
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Annex ZA
(informative)
Relationship of this document with EC Directives
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association and supports essential requirements of EC Directive:
Energy Labelling Directive 02/31/EC
WARNING : Other requirements and other EU Directives may be applicable to the product(s) falling
within the scope of this standard.
Compliance with the clauses of this standard provides one means of conforming with the specific essential
requirements of the Directive concerned and associated EFTA regulations.
EN 14511-2:2004 (E)
15
Bibliography
[1] CEN/TS 14825, Air conditioners, liquid chilling packages and heat pumps with electrically drive
compressors for space heating and cooling ? Testing and rating at part load conditions.