SIST EN 14825:2022

SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN 14825:2019
Klimatske naprave, enote za hlajenje kapljevine ter toplotne črpalke za ogrevanje
in hlajenje prostora z električnimi kompresorji, profesionalno in procesno hlajenje
prostora - Preskušanje in ocenitev ob delni obremenitvi ter izračun letnega učinka
Air conditioners, liquid chilling packages and heat pumps, with electrically driven
compressors, for space heating and cooling, commercial and process cooling - Testing
and rating at part load conditions and calculation of seasonal performance
Luftkonditionierer, Flüssigkeitskühlsätze und Wärmepumpen mit elektrisch
angetriebenen Verdichtern zur Raumbeheizung und -kühlung - Prüfung und
Leistungsbemessung unter Teillastbedingungen und Berechnung der
jahreszeitbedingten Leistungszahl
Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur avec compresseur
entraîné par moteur électrique pour le chauffage et la réfrigération des locaux - Essais et
détermination des caractéristiques à charge partielle et calcul de performance
saisonnière
Ta slovenski standard je istoveten z: EN 14825:2022
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 14825
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2022
EUROPÄISCHE NORM
ICS 27.080; 91.140.30 Supersedes EN 14825:2018
English Version
Air conditioners, liquid chilling packages and heat pumps,
with electrically driven compressors, for space heating and
cooling, commercial and process cooling - Testing and
rating at part load conditions and calculation of seasonal
performance
Climatiseurs, groupes refroidisseurs de liquide et Luftkonditionierer, Flüssigkeitskühlsätze und
pompes à chaleur avec compresseur entraîné par Wärmepumpen mit elektrisch angetriebenen
moteur électrique pour le chauffage et le Verdichtern zur Raumbeheizung und -kühlung -
refroidissement des locaux, le froid commercial et Prüfung und Leistungsbemessung unter
industriel - Essais et détermination des Teillastbedingungen und Berechnung der
caractéristiques à charge partielle et calcul de jahreszeitbedingten Leistungszahl
performance saisonnière
This European Standard was approved by CEN on 24 January 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 14825:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 6
Introduction . 7
1 Scope . 10
2 Normative references . 10
3 Terms, definitions, symbols, abbreviated terms and units . 11
3.1 Terms and definitions . 11
3.2 Symbols, abbreviated terms and units . 24
4 Part load conditions for space cooling . 29
4.1 General. 29
4.2 Air-to-air units . 29
4.3 Water(brine)-to-air units . 29
4.4 Air-to-water(brine) units . 30
4.5 Water(brine)-to-water(brine) units . 31
5 Calculation methods for seasonal space cooling efficiency η , SEER and SEER . 32
s,c on
5.1 General. 32
5.2 Calculation of the seasonal space cooling efficiency η . 33
s,c
5.3 General formula for calculation of SEER . 33
5.4 Calculation of the reference annual cooling demand Q . 34
C
5.5 Calculation of the reference annual energy consumption for space cooling Q . 34
CE
5.6 Calculation of SEER . 35
on
5.7 Calculation procedure for determination of EER values at part load conditions A,
bin
B, C and D . 35
6 Part load conditions for space heating . 37
6.1 General. 37
6.2 Air-to-air units . 38
6.3 Water(brine)-to-air-units . 39
6.4 Air-to-water(brine) units . 39
6.5 DX-to-water(brine) and water(brine)-to-water(brine) units . 43
7 Calculation methods for seasonal space heating efficiency η , SCOP, SCOP and
s,h on
SCOP of heat pumps . 47
net
7.1 General. 47
7.2 Calculation of the seasonal space heating efficiency η . 48
s,h
7.3 General formula for calculation of SCOP. 48
7.4 Calculation of the reference annual heating demand QH . 49
7.5 Calculation of the annual energy consumption for heating Q . 49
HE
7.6 Calculation of SCOP and SCOP . 50
on net
7.7 Calculation procedure for determination of COP values at part load conditions A
bin
to G . 52
7.8 Method for P calculation . 54
sup
8 Test and calculation methods for hybrid units . 54
8.1 General. 54
8.2 Separated method. 54
8.3 Combined test method . 56
9 Part load conditions for process cooling . 61
10 Calculation method for SEPR of process chillers and remote condenser process chillers
................................................................................................................................................................... 65
10.1 General formula for calculation of SEPR . 65
10.2 Calculation procedure for determination of EER values at part load conditions A, B,
bin
C, D . 66
11 Test methods for testing capacities, EER and COP values during active mode at part
d d
load conditions . 68
11.1 General . 68
11.2 Refrigerant piping . 68
11.3 Basic principles . 69
11.4 Uncertainties of measurement . 69
11.5 Test procedures for units with fixed capacity . 71
11.6 Test procedure for staged and variable capacity units . 74
12 Test methods for electric power input during thermostat-off mode, standby mode
and crankcase heater mode and off mode . 75
12.1 Uncertainties of measurement . 75
12.2 Measurement of electric power input during thermostat-off mode . 75
12.3 Measurement of the electric power input during standby mode . 76
12.4 Measurement of the electric power input during crankcase heater mode. 76
12.5 Measurement of the electric power input during off mode . 76
13 Test report . 77
14 Testing and rating of individual indoor units . 77
Annex A (informative) Applicable climate bins and hours for air conditioners with rated
capacity of ≤ 12 kW for cooling, or heating if the product has no cooling function . 78
A.1 Climate bins . 78
A.2 Hours for active mode, thermostat-off, standby, off mode . 80
A.3 Hours used for crankcase heater mode . 81
Annex B (informative) Applicable climate bins and hours for air/water(brine)/DX-to-
water(brine) heat pumps with a rated heat output ≤ 400 kW . 82
B.1 Climate bins . 82
B.2 Hours for active, thermostat-off, standby and off modes – Heating . 83
B.3 Hours used for crankcase heater mode – Heating . 84
Annex C (informative) Applicable climate bins and hours for process chillers . 85
C.1 Climate bins . 85
Annex D (informative) Applicable climate bins and hours for air-to-air units > 12 kW,
water(brine)-to-air units and comfort chillers . 89
D.1 Climate bins . 89
D.2 Hours for active, thermostat-off, standby and off modes . 91
D.3 Hours used for crankcase heater mode . 92
Annex E (informative) Determination of water(brine) temperature for fixed capacity units
with variable outlet temperature . 93
E.1 General. 93
E.2 Test procedure for an air-to-water unit with fixed water flow rate . 93
Annex F (informative) Calculation example for SEER and SEER – Application to a
on
reversible air-to-air unit with variable capacity . 97
F.1 Calculation of SEER . 97
on
F.2 Calculation of SEER . 99
Annex G (informative) Calculation example for SCOP and SCOP – Application to a fixed
on net
capacity air-to-water(brine) heat pump used for low temperature application . 100
Annex H (informative) Calculation example for SCOP and SCOP – Application to a fixed
on net
capacity brine-to-water(brine) heat pump used for medium temperature
application . 105
Annex I (informative) Calculation examples for SCOP for hybrid units . 112
on
I.1 Calculation example for SCOP for variable speed hybrid unit based on heat pump
on
and boiler separated tests . 112
I.2 Calculation example for SCOP for hybrid unit using combined test method . 114
on
Annex J (informative) Calculation example for SEPR – Application to a process chiller with
staged capacity . 116
J.1 Rating performance . 116
Annex K (informative) Compensation methods for air-to-water(brine) and water(brine)-
to-water(brine) units . 119
K.1 General. 119
K.2 Compensation system for reduced capacity test in cooling mode . 119
K.3 Compensation system for reduced capacity test in heating mode . 121
Annex L (normative) Rating of outdoor units of multi-split air conditioners and heat pumps
................................................................................................................................................................ 123
L.1 General. 123
L.2 Rating of outdoor units . 123
L.3 Calculation of the SEER based on the EER . 124
outdoor
..................................................................... 124
L.4 Calculation of the SCOP based on the COPoutdoor
Annex M (normative) Testing and rating of individual indoor units . 125
M.1 Indoor unit under test . 125
M.2 Test methods . 125
M.3 Test conditions . 126
M.4 Rated performance. 126
M.5 Data to be recorded . 127
Annex ZA (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EU) No 206/2012 aimed to be covered 129
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 . 130
Annex ZC (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EU) No 813/2013 aimed to be covered 131
Annex ZD (informative) Relationship between this European Standard and the energy
labelling requirements of Commission Delegated Regulation (EU) No 811/2013
aimed to be covered . 132
Annex ZE (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EU) 2015/1095 aimed to be covered . 134
Annex ZF (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EU) 2016/2281 aimed to be covered . 135
Bibliography. 137

European foreword
This document (EN 14825:2022) 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 January 2023, and conflicting national standards shall
be withdrawn at the latest by January 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 14825:2018.
The revision was necessary in order to harmonize this European standard with 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 and to harmonize this European Standard
with 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 and Commission's standardization request M/495 and Amendment N° 1, and Commission's
standardization request M/560.
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
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, Annex ZB, Annex ZC,
Annex ZD, Annex ZE and Annex ZF, which are integral parts of this document.
The main changes with respect to requirements for forthcoming regulations are:
a) modification of the title to include commercial cooling and process cooling;
b) modification of Table 4 to include exhaust air dry bulb temperatures;
c) new requirements for hybrid heat pumps in Clause 8;
d) new structure to separate requirements for calculation methods for seasonal space heating efficiency
of heat pumps (Clause 7) and requirements for test methods for hybrid heat pumps (Clause 8);
e) update of uncertainties of measurement for the air enthalpy method;
f) removal of Annex E and the void Annex I, and renumbering of the following Annexes;
g) addition a new Annex M about testing and rating of individual indoor units;
h) new informative Annex ZB, Relationship between this European Standard and the requirements of
Commission Regulation (EU) No 626/2011 of 4 May 2011; and renumbered the following annexes;
i) new informative Annex ZF, Relationship between this European Standard and the requirements of
Commission Regulation (EU) 2016/2281 of 30 November 2016;
j) new numbering of annexes.
EN 14825:2018 EN 14825:2022
Annex E -
Annex F Annex E
Annex G Annex F
Annex H Annex G
Annex I
Annex J Annex H
Annex K Annex I
Annex L Annex J
Annex M Annex K
Annex N Annex L
Annex M
Annex ZB
Annex ZB Annex ZC
Annex ZC Annex ZD
Annex ZD Annex ZE
Annex ZF
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.
Introduction
Heat pumps, air conditioners and liquid chilling packages can be selected and compared at standard
rating conditions. These conditions do not represent the usual operating conditions of the equipment
over a season. Better comparison for equipment can be assessed by determining Seasonal Energy
Efficiency Ratio, Seasonal Coefficient of Performance and Seasonal Energy Performance Ratio that enable
to take into account more representative operating conditions and performance for several part loads.
Fixed capacity heat pumps, air conditioners and liquid chilling packages deal with varying loads by
varying the operation time. The efficiency of the system is dependent on the effectiveness of the
controlling thermostats. Variable capacity air conditioners, liquid chilling packages and heat pumps, by
continuous or step control of the compressor, can more closely match the varying load improving system
efficiency.
This document also applies to hybrid units as defined in this standard.
This document provides part load conditions and calculation methods for calculating the Seasonal Energy
Efficiency Ratio (SEER ), the seasonal energy performance ratio (SEPR) and Seasonal Coefficient of
on
Performance (SCOP and SCOP ) of such units when they are used to fulfil the cooling and heating
on net
demands.
This document provides methods for calculating the seasonal space cooling energy efficiency η and
s,c
seasonal space heating energy efficiency η .
s,h
Other electric energy consumptions can occur when the unit is not used to fulfil the cooling and heating
demands such as those from a crankcase heater or when the unit is on standby. These consumptions are
considered in the calculation methods for SEER and SCOP.
This document also considers Seasonal Energy Performance Ratio of process chillers (SEPR) which is
representative of variations in loads throughout a complete year. Test conditions and test method are
described to calculate this SEPR.
SEER/SEER , SCOP/SCOP , SCOP and SEPR calculations are based on calculated or measured values.
on on net
In case of measured values, this document gives the methods for testing heat pumps, air conditioners and
liquid chilling packages at part load conditions.
The standard rating conditions and test methods are given in EN 14511-2, EN 14511-3 and EN 15879-1.
The standard provides test procedures for the rating of individual indoor units, as part of multi-split
systems having a system capacity > 12 kW.
Although this document was prepared in the frame of the 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, it may also be used to show
compliance with the requirements of the European Directive 2010/30/EU and Commission Delegated
Regulation (EU) No 626/2011.
This document was prepared in the frame of the 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. This European standard also aims
at showing compliance with the requirements of the European Directive 2010/30/EU and Commission
Delegated Regulation (EU) No 811/2013.
This document was prepared in the frame of the 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.
This document was prepared in the frame of the 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.
1 Scope
This document is applicable to air conditioners, heat pumps and liquid chilling packages, including
comfort and process chillers. It applies to factory made units defined in EN 14511-1, except single duct,
double duct, control cabinet and close control units. It also covers direct exchange-to-water(brine) heat
pumps (DX-to-water(brine)) as defined in EN 15879-1.
This document also applies to hybrid units as defined in this standard.
This document specifies the temperatures, part load conditions and the calculation methods for the
determination of seasonal energy efficiency SEER and SEER , seasonal space cooling energy efficiency
on
η , seasonal coefficient of performance SCOP, SCOP and SCOP , seasonal space heating energy
s,c on net
efficiency η and seasonal energy performance ratio SEPR.
s,h
Such calculation methods can be based on calculated or measured values.
In case of measured values, this document specifies the test methods for determination of capacities, EER
and COP values during active mode at part load conditions. It also establishes test methods for power
input during thermostat-off mode, standby mode, off mode and crankcase heater mode.
NOTE 1 The word “unit” is used instead of the full terms of the products.
NOTE 2 The word “heating” is used to refer to space heating.
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 304:2017, Heating boilers — Test code for heating boilers for atomizing oil burners
EN 14511-1:2018, 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 14511-2:2018, Air conditioners, liquid chilling packages and heat pumps for space heating and cooling
and process chillers, with electrically driven compressors — Part 2: Test conditions
EN 14511-3:2018, Air conditioners, liquid chilling packages and heat pumps for space heating and cooling
and process chillers, with electrically driven compressors — Part 3: Test methods
EN 15502-1:2012+A1:2015, Gas-fired heating boilers — Part 1: General requirements and tests
EN 15879-1:2011, Testing and rating of direct exchange ground coupled heat pumps with electrically
driven compressors for space heating and/or cooling — Part 1: Direct exchange-to-water heat pumps
3 Terms, definitions, symbols, abbreviated terms and units
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 14511-1 and EN 15879-1 and
the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1.1
active mode
mode corresponding to the hours with a space cooling or heating load of the building and whereby the
cooling or heating function of the unit is activated
Note 1 to entry: This condition may involve on/off-cycling of the unit in order to reach or maintain a required
indoor air temperature.
3.1.2
active mode seasonal coefficient of performance
SCOP
on
average coefficient of performance of the unit in active mode for the designated heating season,
determined from the part load, supplementary heating capacity (where required) and bin-specific
coefficients of performance (COP (T )) and weighted by the bin hours where the bin condition occurs
bin j
Note 1 to entry: For calculation of SCOP , the energy consumption during thermostat-off mode, standby mode,
on
off mode and crankcase heater mode are excluded. The energy consumption of a supplementary heater is added for
the part load conditions where the declared capacity of the unit is lower than the heating load, regardless whether
this supplementary heater is included in the unit or not included in the unit.
Note 2 to entry: Expressed in kWh/kWh.
3.1.3
active mode seasonal energy efficiency ratio
SEER
on
average energy efficiency ratio of the unit in active mode for the space cooling function, determined from
part load and bin-specific energy efficiency ratios (EER (T )) and weighted by the bin hours where the
bin j
bin condition occurs
Note 1 to entry: For calculation of SEER , the energy consumption during thermostat-off mode, standby mode,
on
off mode and that of the crankcase heater is excluded.
Note 2 to entry: Expressed in kWh/kWh.
3.1.4
annual energy consumption for space cooling
Q
CE
energy consumption required to meet the reference annual space cooling demand and calculated as the
reference annual space cooling demand divided by the active mode seasonal energy efficiency ratio
(SEER ) and the energy consumption of the unit for thermostat-off-, standby-, off- and crankcase heater
on
mode during the cooling season
Note 1 to entry: Expressed in kWh.
3.1.5
annual energy consumption for heating
Q
HE
energy consumption required to meet the reference annual heating demand for a designated heating
season and calculated as the reference annual heating demand divided by the active mode seasonal
coefficient of performance (SCOP ) and the energy consumption of the unit for thermostat-off-,
on
standby-, off- and crankcase heater mode during the heating season
Note 1 to entry: Expressed in kWh.
3.1.6
average climate conditions
temperature conditions characteristic for the city of Strasbourg for the heating season
3.1.7
bin
outdoor temperature interval of 1 K
3.1.8
bin hours
h
j
hours per season for which an outdoor temperature occurs for each bin j
3.1.9
bin limit temperature
temperature in the bin for which no more heating or cooling is required
Note 1 to entry: The bin limit temperature equals 16 °C for all climates in space cooling and space heating
applications.
Note 2 to entry: There is no bin limit temperature for process cooling applications.
3.1.10
bin-specific coefficient of performance
COP (T )
bin j
coefficient of performance specific for every bin j with outdoor temperature T in a season
j
Note 1 to entry: Expressed in kW/kW.
3.1.11
bin-specific energy efficiency ratio
EER (T )
bin j
energy efficiency ratio specific for every bin j with outdoor temperature T in a season
j
Note 1 to entry: Expressed in kW/kW.
3.1.12
bin temperature
T
j
outdoor air dry bulb temperature at bin j
Note 1 to entry: Expressed in °C.
Note 2 to entry: The relative humidity may be indicated by a corresponding wet bulb temperature.
3.1.13
bivalent temperature
T
biv
lowest outdoor bin temperature at which the unit is declared to have a capacity able to meet 100 % of
the heating load without supplementary heater, whether it is integrated in the unit or not
Note 1 to entry: Below this temperature, the unit may still provide capacity, but additional supplementary
heating is necessary to fulfil the full heating load.
Note 2 to entry: Bivalent temperature does not apply to hybrid units.
Note 3 to entry: Expressed in °C.
3.1.14
capacity control
ability of the unit to change its capacity by changing the volumetric flow rate of the refrigerant
Note 1 to entry: Units are indicated as ‘fixed’ if the unit cannot change its volumetric flow rate, 'staged' if the
volumetric flow rate is changed or varied in series of not more than two steps, or 'variable' if the volumetric flow
rate is changed or varied in series of three or more steps.
3.1.15
capacity ratio
CR
cooling (or heating) part load or full load divided by the declared cooling (or heating) capacity of the unit
at the same temperature conditions
3.1.16
climate conditions
temperature conditions characteristic for a specific location
3.1.17
coefficient of performance at declared capacity
COP
d
declared heating capacity of the unit divided by the effective power input of the unit at specific
temperature conditions, A, B, C, D, E, F and G, where applicable
Note 1 to entry: Expressed in kW/kW.
3.1.18
coefficient of performance at part load
COP
bin
coefficient of performance COP corrected with the degradation coefficient where applicable
d
Note 1 to entry: Expressed in kW/kW.
3.1.19
colder climate conditions
temperature conditions characteristic for the city of Helsinki for the heating season
3.1.20
compressor-off state
compressor is not running while the unit is operating in active mode
Note 1 to entry: This is the “off” phase in on/off cycling.
3.1.21
conversion coefficient
CC
coefficient for electricity generation efficiency
Note 1 to entry: The value of CC to apply can be found in the relevant regulation.
3.1.22
crankcase heater mode
condition where the unit has activated a heating device to avoid the refrigerant migrating to the
compressor in order to limit the refrigerant concentration in oil at compressor start
3.1.23
crankcase heater mode operating hours
H
CK
annual number of hours the unit is considered to be in crankcase heater mode, the value of which depends
on the designated season and type of unit and operating mode(s)
Note 1 to entry: Expressed in h.
3.1.24
crankcase heater mode power input
P
CK
power input of the unit due to crankcase heater mode
Note 1 to entry: Expressed in W.
3.1.25
cycling interval capacity for cooling
P
cycc
(time-weighted) average cooling capacity output over the cycling interval test
Note 1 to entry: Expressed in kW.
3.1.26
cycling interval capacity for heating
P
cych
(time-weighted) average heating capacity output over the cycling interval test
Note 1 to entry: Expressed in kW.
3.1.27
cycling interval efficiency for cooling
EER
cyc
average energy efficiency ratio over the cycling interval test (compressor switching on and off)
Note 1 to entry: The cycling interval efficiency for cooling is calculated as the integrated cooling capacity over the
interval divided by the integrated power input over that same interval.
Note 2 to entry: Expressed in kWh/kWh.
3.1.28
cycling interval efficiency for heating
COP
cyc
average coefficient of performance over the cycling interval test (compressor switching on and off)
Note 1 to entry: The cycling interval efficiency for heating calculated as the integrated heating capacity over the
interval divided by the integrated power input over that same interval.
Note 2 to entry: Expressed in kWh/kWh.
3.1.29
declared capacity
cooling (Pdc) or heating (Pdh) capacity a unit can provide at any temperature condition A, B, C, D, E, F or
G, as declared by the manufacturer
Note 1 to entry: This is the capacity provided by the refrigerant cycle and the necessary circulation means (fans,
pumps) of the unit without supplementary heaters, even if those are integrated in the unit, except for hybrid unit
tested according to the combined method.
Note 2 to entry: Pdc in point A, B, C and D are referred to as P , P , P and P respectively in process cooling.
A B C D
Note 3 to entry: Expressed in kW.
3.1.30
degradation coefficient
Cd
measure of efficiency loss due to the cycling
Note 1 to entry: If Cd is not determined by measurement then the default degradation coefficient for air-to-
water(brine), water(brine)-to-water(brine) and DX-to-water(brine) units is 0,9.
Note 2 to entry: If Cd is not determined by measurement then the default degradation coefficient for air-to-air
and water(brine)-to-air units is 0,25.
3.1.31
design load
P
design
space cooling (P ) or space heating (P ) load declared by the manufacturer at T or T
designc designh designc designh
conditions respectively
Note 1 to entry: It is possible to calculate the SEER/SEERon or SCOP/SCOPon/SCOPnet of a unit for more than one
Pdesign value.
Note 2 to entry: Expressed in kW.
3.1.32
dry cooler
self-contained system that cools a single-phase liquid by rejecting sensible heat via a heat exchanger to
air that is mechanically circulated by integrated fan(s)
3.1.33
effective power input during compressor-off state
PCoff
total power input of the unit when the compressor is switched off in active mode, used for the
determination of the degradation coefficient Cd, including corrections for pumps and fans where
applicable
Note 1 to entry: Expressed in kW.
3.1.34
effective power input with declared capacity
P
Con
total power input when the unit is operating at part load condition, used for the determination of the
degradation coefficient Cd, including corrections for pumps and fans where applicable
Note 1 to entry: Expressed in kW.
3.1.35
electric supplementary heater
real or assumed electric supplementary heater, with a COP of 1, considered in the calculation of SCOP and
SCOP
on
3.1.36
electric supplementary heater capacity
elbu(T )
j
heating capacity of a real or assumed electric supplementary heater supplementing the declared capacity
for heating when the capacity of the unit is lower than the heat load for a specific bin temperature T
j
Note 1 to entry: Expressed in kW.
3.1.37
energy efficiency ratio at declared capacity
EER
d
declared cooling capacity of the unit divided by the effective power input of a unit at specific temperature
conditions A, B, C, D
Note 1 to entry: Expressed in kW/kW.
Note 2 to entry: EERd in point A, B, C and D are referred to as EERA, EERB, EERC and EERD respectively in process
cooling.
3.1.38
energy efficiency ratio at part load
EER
bin
energy efficiency ratio EER corrected with the degradation coefficient, where applicable
d
Note 1 to entry: Expressed in kW/kW.
3.1.39
equivalent active mode hours for cooling
H
CE
assumed annual number of hours the unit must provide the design load for space cooling (P ) in order
designc
to satisfy the reference annual space cooling demand
Note 1 to entry: Expressed in h.
3.1.40
equivalent active mode hours for heating
H
HE
assumed annual number of hours the unit must provide the design load for heating (P ) in order
...