Commission communication in the framework of the implementation of Commission Regulation (EU) No 813/2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for space heaters and combination heaters and of Commission Delegated Regulation (EU) No 811/2013 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
Date: 2014-07-03
Institutions: European Commission
Subjects: consumer information, eco-label, electrical energy, energy efficiency, energy saving, environmental impact, heating, technical specification








C_2014207EN.01000201.xml










3.7.2014   


EN


Official Journal of the European Union


C 207/2





Commission communication in the framework of the implementation of Commission Regulation (EU) No 813/2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for space heaters and combination heaters and of Commission Delegated Regulation (EU) No 811/2013 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
(2014/C 207/02)
1.   Publication of titles and references of transitional methods of measurement and calculation (1) for the implementation of Regulation (EU) No 813/2013, and in particular Annexes III and IV thereof, and for the implementation of Regulation (EU) No 811/2013, and in particular Annexes VII and VIII thereof.
2.   Parameters in italics are determined in Regulation (EU) No 813/2013 and in Regulation (EU) No 811/2013.
3.   References








Parameter


Organisation


Reference/Title


Notes





Boiler space heaters and boiler combination heaters using gaseous fuel






η, P, design types, Pstby
, Pign




CEN


EN 15502-1:2012 Gas-fired heating boilers - Part 1: General requirements and tests;


EN 15502-1:2012 is set to replace EN 297, EN 483, EN 677, EN 656, EN 13836, EN 15420.




Useful heat output at rated heat output P4
 and useful efficiency at rated heat output η4
 at 80/60 °C


CEN


§ 3.1.6 Nominal output (definition, symbol Pn);
§ 3.1.5.7 Useful efficiency (definition, symbol ηu);
§ 9.2.2 (test);


All efficiency values are expressed in gross calorific value GCV.





Design types, definitions


CEN


§ 3.1.10. Design types of boilers with definitions of ‘combination-boiler’; ‘low temperature boiler’ and ‘condensing boiler’.
§ 8.15. Formation of condensate (requirements and test);


 




Useful heat output at 30 % of rated heat output P1
 and useful efficiency at 30 % of rated heat output η1
 at partial heat input and low temperature regime


CEN


§ 3.1.5.7. Useful efficiency (definition, symbol ηu);
§ 9.3.2. Useful efficiency at part load, Tests;








1)


tests are carried out at 30 % of nominal heat input, not at minimum steady state heat input;










2)


test return temperatures are 30 °C (condensing boiler), 37 °C (low temperature boiler) or 50 °C (standard boiler).
According to prEN 15502-1:2013,






—


η4 is the useful efficiency at nominal heat input or for range rated boilers at the arithmetic mean of the maximum and minimum useful heat input.










—


η1 is the useful efficiency at 30 % of the nominal heat input or for range rated boilers at 30 % of the arithmetic mean of the maximum and minimum useful heat input.












Standby heat loss Pstby




CEN


§ 9.3.2.3.1.3 Standby losses (test);


 




Ignition burner power consumption Pign




CEN


§ 9.3.2 Table 6 and 7: Q3 = permanent ignition burner.


Applies to ignition burners operating at main burner-off mode.




Emission of nitrogen oxides NOX




CEN


EN 15502-1:2012.
§ 8.13. NOX (classification, test- and calculation methods)


NOX emission values are expressed in gross calorific value GCV.





Boiler space heaters and boiler combination heaters using liquid fuel





General test conditions


 


EN 304:1992; A1:1998; A2:2003; Heating boilers - Test code for heating boilers for atomizing oil burners;
Section 5 (‘Tests’).


 




Standby heat loss Pstby




CEN


EN 304 as above;
§ 5.7 Determination of standby loss.



Pstby
 =q × (P4/η4), with ‘q’ defined in EN 304.
The test described in EN304 shall be done with Δ30K




Seasonal space heating energy efficiency in active mode ηson
 with test results for useful output P



CEN


For condensing boilers:
EN 15034:2006. Heating boilers - Condensing heating boilers for fuel oil; § 5.6 Useful efficiency.


EN 15034:2006 refers to condensing oil boilers.




 


 


For standard and low temperature boilers:
EN 304:1992; A1:1998; A2:2003; Heating boilers - Test code for heating boilers for atomizing oil burners;
Section 5 (‘Tests’).


For boilers with forced draught burner similar sections apply in EN 303-1, EN 303-2 and EN 303-4. For atmospheric, not fan-assisted burners EN 1:1998 applies.
Test conditions (power and temperature settings) for η1
 and η4
 are the same as for gas-fired boilers described above.




Emission of nitrogen oxides NOX




CEN


EN 267:2009+A1:2011
Automatic forced draught burners for liquid fuels;
§ 4.8.5. Emission limit values for NOX and CO;
§ 5. Testing. ANNEX B. Emission measurements and corrections.


NOX emission values are expressed in GCV.
A reference nitrogen content in the fuel of 140mg/kg shall be applied. Where another nitrogen content is measured, with the exemption of Kerosene oil only, the following correction equation shall apply:



NOX(EN 267) is the value of NOX corrected to the reference conditions of nitrogen of the fuel oil chosen at 140 mg/kg;
NOXref is the measured value of NOX according to B.2;
Nmeas is the value of the nitrogen content of the fuel oil measured in mg/kg;
Nref = 140 mg/kg.
For rating that the requirements of the standard are fulfilled the value of NO X(EN 267) shall apply.





Electric boiler space heaters and electric boiler combination heaters





Seasonal space heating energy efficiency ηs
 of electric boiler space heaters and electric boiler combination heaters


European Commission


Point 4 of this Communication


Additional elements for measurements and calculations related to the seasonal space heating energy efficiency of boiler space heaters, boiler combination heaters and cogeneration space heaters.





Cogeneration space heaters





Useful heat output at rated heat output of cogeneration space heater with supplementary heater disabled PCHP100+Sup0, useful heat output at rated heat output of cogeneration space heater with supplementary heater enabled PCHP100+Sup100,


Useful efficiency at rated heat output of cogeneration space heater with supplementary heater disabled ηCHP100+Sup0, Useful efficiency at rated heat output of cogeneration space heater with supplementary heater enabled ηCHP100+Sup100,


Electrical efficiency at rated heat output of cogeneration space heater with supplementary heater disabled ηel,CHP100+Sup0
, Electrical efficiency at rated heat output of cogeneration space heater with supplementary heater enabled ηel,CHP100+Sup100




CEN


FprEN 50465:2013
Gas appliances – Combined Heat and Power appliance of nominal heat input inferior or equal to 70 kW.
Heat outputs:
6.3 Heat input and heat and electrical output; 7.3.1 and 7.6.1;
Efficiencies:
7.6.1 Efficiency (Hi) and 7.6.2.1. Efficiency – Seasonal space heating energy efficiency – conversion to gross calorific efficiency.



PCHP100+Sup0
 corresponds to

QCHP_100+Sup_0
 × ηth,CHP_100+Sup_0


in FprEN 50465:2013

PCHP100+Sup100
 corresponds to

QCHP_100+Sup_100
 × ηth,CHP_100+Sup_100


in FprEN 50465:2013

ηCHP100+Sup0
 corresponds to ηHs,th, CHP_100+Sup_0


in FprEN 50465:2013

ηCHP100+Sup100
 corresponds to ηHs,th,CHP_100+Sup_100


in FprEN 50465:2013

ηel,CHP100+Sup0
 corresponds to ηHs,el,CHP_100+Sup_0


in FprEN 50465:2013

ηel,CHP100+Sup100
 corresponds to ηHs,el,CHP_100+Sup_100


in FprEN 50465:2013
FprEN 50465 is the reference only for the calculation of PCHP100+Sup0
, PCHP100+Sup100
, ηCHP100+Sup0
, ηCHP100+Sup100
, ηel,CHP100+Sup0
, ηel,CHP100+Sup100
.
For the calculation of ηs
 and ηson
 of cogeneration space heaters the methodology described in this Communication shall be used.





Pstby
, Pign




CEN


FprEN 50465:2013
Gas appliances – Combined Heat and Power appliance of nominal heat input inferior or equal to 70 kW.


 




Standby heat loss Pstby




CEN


§ 7.6.4 Stand-by losses Pstby
 ;


 




Ignition burner power consumption Pign




CEN


§ 7.6.5 Permanent ignition burner heat input Qpilot




Pign
 corresponds to Qpilot
 in FprEN 50465:2013




Emission of nitrogen oxides NOX




CEN


FprEN 50465:2013
§ 7.8.2 NOX (Other pollutants)


NOX emission values shall be measured in mg/kWh fuel input and expressed in gross calorific value GCV. The electrical energy generated during the test, shall not be considered in the calculation of NOX emission.





Boiler space heaters, boiler combination heaters and cogeneration space heaters





Auxiliary electricity consumption at full load elmax, at part load elmin and in standby mode PSB




CEN


EN 15456:2008: Heating boilers - Electrical power consumption for heat.
EN 15502:2012 for gas boilers.
FprEN 50465:2013
For cogeneration space heaters
§ 7.6.3 Electric auxiliary energy consumption for ErP


Measurement without circulator (pump).

elmax corresponds to Pelmax
 in FprEN 50465:2013

elmin corresponds to Pelmin
 in FprEN 50465:2013
In the determination of elmax, elmin and PSB
, the electric auxiliary energy consumed by the primary heat generator shall be included.




Sound power level LWA




CEN


For sound power level, indoor measured:
EN 15036 - 1: Heating boilers - Test regulations for airborne noise emissions from heat generators - Part 1: Airborne noise emissions from heat generators.


For the acoustics, EN 15036 - 1 is referring to ISO 3743-1 Acoustics - Determination of sound power levels of noise sources - Engineering methods for small, movable sources in reverberant fields - Part 1: Comparison method for hard-walled test rooms, as well as to other allowable methods, each with their own accuracies.




Seasonal space heating energy efficiency ηs
 of boiler space heaters, boiler combination heaters and cogeneration space heaters


European Commission


Point 4 of this Communication.


Additional elements for measurements and calculations related to the seasonal space heating energy efficiency of boiler space heaters, boiler combination heaters and cogeneration space heaters.





Heat pump space heaters and heat pump combination heaters





Testing methods, vapour compression electrically driven heat pumps


CEN


EN 14825:2013
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;
Section 8: Test methods for testing capacities, EERbin(Tj) and COPbin(Tj) values during active mode at part load conditions
Section 9: Test methods for electric power consumption during thermostat off mode, standby mode and crankcase heater mode


 




Testing methods, vapor compression liquid or gaseous fuel engine driven heat pumps


CEN


EN 14825:2013
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;
Section 8: Test methods for testing capacities EERbin(Tj) and COPbin(Tj) values during active mode at part load conditions;
Section 9: Test methods for electric power consumption during thermostat off mode, standby mode and crankcase heater mode.


Until publication of a new European Standard. A working document is in progress within the CEN/TC299 WG3 experts group




Testing methods, liquid or gaseous fuel sorption heat pumps


CEN


prEN 12309-4:2013
Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70kW – Test methods


 




Vapor compression electrically or liquid or gaseous fuel engine driven heat pumps.
Test conditions for air-to-water, brine-to-water and water-to-water units for medium temperature application for average, warmer and colder climate conditions for calculation of seasonal coefficient of performance SCOP for electrically driven heat pumps and seasonal primary energy ratio SPER for liquid or gaseous fuel engine driven heat pumps.


CEN


EN 14825:2013
Section 5.4.4, Tables 18,19 and 20 (air-to-water);
Section 5.5.4, Tables 30,31 and 32 (brine-to-water, water-to-water);
Where the outlet temperatures set out in column ‘variable outlet’ are to be applied for heat pumps that control the outlet (flow) water temperature according to the heat demand. For heat pumps that do not control the outlet (flow) water temperature according to the heat demand but have a fixed outlet temperature, outlet temperature should be set according to the ‘fixed outlet’.


For liquid or gaseous fuel engine driven heat pumps EN 14825:2013 applies until publication of a new European Standard.
Medium temperature corresponds to high temperature in EN 14825:2013.
Tests are done according to EN 14825:2013, section 8:
For fixed capacity units, tests are applied as indicated in EN 14825:2013, section 8.4. Either the outlet temperatures during the tests are the ones to obtain the average outlet temperatures corresponding to the declaration points in EN 14825:2013 OR this data should be obtained by linear interpolation / extrapolation from the test points in EN 14511-2:2013, complemented with test at other outlet temperatures when necessary.
For variable capacity units, EN 14825:2013 section 8.5.2 are applied. Either the conditions during the tests are the same as for the declaration points specified in that standard OR tests can be performed at other outlet temperatures and part load conditions and the results linearly interpolated, extrapolated, to determine the data for the declaration points in EN 14825:2013.
Apart from test conditions A to F, ‘in case the TOL is below – 20 °C, an additional calculation point has to be taken from the capacity and COP at – 15 °C conditions’ (cit. EN 14825:2013 § 7.4). For the purpose of this communication, this point will be called ‘G’.




Liquid or gaseous fuel sorption heat pumps
Test conditions for air-to water, brine-to-water and water-to-water units for medium temperature application for average, warmer and colder climate conditions for calculation of seasonal primary energy ratio SPER


CEN


prEN 12309-3:2012
Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70kW – Part 3: Test conditions.
Section 4.2 Tables 5 and 6.


Medium temperature corresponds to high temperature in prEN 12309-3:2012




Vapor compression electrically ord liquid or gaseous fuel engine driven heat pumps.
Test conditions for air-to-water, brine-to-water and water-to-water units under low temperature application for average, warmer and colder climate conditions for calculation of seasonal coefficient of performance SCOP for electrically driven heat pumps and seasonal primary energy ratio SPER for liquid or gaseous fuel engine driven heat pumps.


CEN


EN 14825:2013;
Section 5.4.2, Tables 11,12 and 13 (air-to-water);
Section 5.5.2, Tables 24,25 and 26 (brine-to-water, water-to-water);
Where the outlet temperatures set out in column ‘variable outlet’ are to be applied for heat pumps that control the outlet (flow) water temperature according to the heat demand. For heat pumps that do not control the outlet (flow) water temperature according to the heat demand but have a fixed outlet temperature, outlet temperature should be set according to the ‘fixed outlet’.


Same notes as for average climate and medium temperature application, except ‘Medium temperature corresponds to high temperature in EN 14825:2013’.




Liquid or gaseous fuel sorption heat pumps
Test conditions for air-to water, brine-to-water and water-to-water units for low temperature application for average, warmer and colder climate conditions for calculation of seasonal primary energy ratio SPER


CEN


prEN 12309-3:2012
Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70kW – Part 3: Test conditions.
Section 4.2 Tables 5 and 6.


 




Vapor compression electrically driven heat pump
Calculation of seasonal coefficient of performance SCOP


CEN


EN 14825:2013
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;
Section 7: Calculation methods for reference SCOP, reference SCOPon and reference SCOPnet.


 




Vapor compression liquid or gaseous fuel engine driven heat pump.
Calculation of seasonal primary energy ratio SPER



CEN


New European Standards under development


The SPER formulae will be established in analogy to the SCOP formulae for vapor compression electrically driven heat pumps: COP, SCOPnet
, SCOPon
 and SCOP will be replaced by GUEGCV
, PER, SPERnet
, SPERon
 and SPER.




Liquid or gaseous fuel sorption heat pumps
Calculation of seasonal primary energy ratio SPER



CEN


prEN12309-6:2012
Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70kW – Part 6: Calculation of seasonal performances



SPER corresponds to SPERh in prEN12309-6:2012




Seasonal space heating energy efficiency ηs
 of heat pump space heaters and heat pump combination heaters


European Commission


Point 5 of this Communication


Additional elements for calculations related to the seasonal space heating energy efficiency of heat pump space heaters and heat pump combination heaters.




Vapour compression liquid or gaseous fuel engine driven heat pumps,
Emission of nitrogen oxides NOX




CEN


New European Standard under development within the CEN/TC299 WG3 experts group


For variable capacity unit only, NOX emissions shall be measured at standard rating conditions as defined in table 3 Annex III of Commission Regulation 813/2013, using ‘Engine rpm equivalent (Erpmequivalent)’.
Erpmequivalen shall be calculated as follow:
Erpmequivalent = X1 × Fp1 + X2 × Fp2 + X3 × Fp3 + X4 × Fp4

XI = Engine rpm at 70 %, 60 %, 40 %, 20 % of the nominal heat input, respectively.
X1, X2, X3, X4 = Engine rpm respectively at 70 %, 60 %, 40 %, 20 % of the nominal heat input.
Fpi = weighting factors as defined in EN15502-1:2012, section 8.13.2.2
If Xi is less than the minimum Engine rpm (Emin) of the equipment, XI = Xmin





Liquid or gaseous fuel sorption heat pumps
Emission of nitrogen oxides NOX




CEN


New European Standard under development within the CEN/TC299 WG2 experts group
prEN 12309-2:2013
Section 7.3.13 ‘NOX Measurements’


NOX emission values shall be measured in mg/kWh fuel input and expressed in gross calorific value GCV.
No alternative methods to express NOX in mg/kWh output shall be used.




Sound power level (LWA
) of heat pump space heaters and heat pump combination heaters


CEN


For sound power level indoor measured and outdoor measured:
EN 12102:2013 Air conditioners, liquid chilling packages, heat pumps and dehumidifiers with electrically driven compressors for space heating and cooling - Measurement of airborne noise - Determination of the sound power


To be used also for liquid or gaseous fuel sorption heat pumps





Temperature controls





Definition of temperature controls classes, contribution of temperature controls to seasonal space heating energy efficiency ηs
 of packages of space heater, temperature control and solar device or of packages of combination heater, temperature control and solar device


European Commission


Point 6 of this Communication


Additional elements for calculations related to the contribution of temperature controls to the seasonal space heating energy efficiency of packages of space heater, temperature control and solar device or of packages of combination heater, temperature control and solar device.





Combination heaters





Water heating energy efficiency ηwh
 of combination water heaters, Qelec
 and Qfuel




European Commission


Commission Regulation No 814/2013, Annex IV §3.a
Communication 2014/C 207/03 in the framework of the implementation of Commission Regulation No 814/2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for water heaters and hot water storage tanks, and of the implementation of Commission Delegate Regulation (EU) No 812/2013 implementing Directive 2010/30/EU of the European Parliament and of the Council with regards to energy labelling of water heaters, hot water storage tanks and packages of water heater and solar device.


For the measurement and calculation of Qfuel
 and Qelec
 refer to Communication 2014/C 207/03 for the same water heater type and energy source(s)




4.   Additional elements for measurements and calculations related to the seasonal space heating energy efficiency of boiler space heaters, boiler combination heaters and cogeneration space heaters
4.1.   Test points
boiler space heaters and boiler combination heaters: the useful efficiency values η4
, η1
 and the useful heat output values P4
, P1
 are measured;
cogeneration space heaters:






—


cogeneration space heaters not equipped with supplementary heaters: the useful efficiency value ηCHP100+Sup0
, the useful heat output value PCHP100+Sup0
 and the electrical efficiency value ηel,CHP100+Sup0
 is measured;










—


cogeneration space heaters equipped with supplementary heaters: the useful efficiency values ηCHP100+Sup0
, ηCHP100+Sup100
, the useful heat output values PCHP100+Sup0
, PCHP100+Sup100
 and the electrical efficiency values ηel,CHP100+Sup0
, ηel,CHP100+Sup100
 are measured.




4.2.   Calculation of the seasonal space heating energy efficiency
The seasonal space heating energy efficiency ηs
 is defined as



Where:



ηson


 is the seasonal space heating energy efficiency in active mode, calculated according to point 4.3 and expressed in %;
F(i) are corrections calculated according to point 4.4 and expressed in %.
4.3.   Calculation of the seasonal space heating energy efficiency in active mode
The seasonal space heating energy efficiency in active mode ηson
 is calculated as follows:






(a)


for fuel boiler space heaters and fuel boiler combination heaters:

ηson
 = 0,85 × η1
 + 0,15 × η4












(b)


for electric boiler space heaters and electric boiler combination heaters:

ηson
 = η4


Where:

η4
 = P4
 / (EC × CC), with
EC = electricity consumption to produce useful heat output P4












(c)


for cogeneration space heaters not equipped with supplementary heaters:

ηson
 = ηCHP100+Sup0












(d)


for cogeneration space heaters equipped with supplementary heaters:

ηson
 = 0,85 × ηCHP100+Sup0
 + 0,15 × ηCHP100+Sup100






4.4.   Calculation of F(i)






(a)


The correction F(1) accounts for a negative contribution to the seasonal space heating energy efficiency of heaters due to adjusted contributions of temperature controls to seasonal space heating energy efficiency of packages of space heater, temperature control and solar device or of packages of combination heater, temperature control and solar device, as set out in point 6.2. For boiler space heaters, boiler combination heaters and cogeneration space heaters, the correction is F(1) = 3 %.










(b)


The correction F(2) accounts for a negative contribution to the seasonal space heating energy efficiency by auxiliary electricity consumption, expressed in %, and is given as follows:






—


for fuel boiler space heaters and fuel boiler combination heaters:
F(2) = 2,5 × (0,15 × elmax + 0,85 × elmin + 1,3 × PSB
) / (0,15 × P4
 + 0,85 × P1
)










—


for electric boiler space heaters and electric boiler combination heaters:
F(2) = 1,3 × PSB
 / (P4
 × CC)










—


for cogeneration space heaters not equipped with supplementary heaters:
F(2) = 2,5 × (elmax + 1,3 × P
SB) / PCHP100+Sup0












—


for cogeneration space heaters equipped with supplementary heaters:
F(2) = 2,5 × (0,15 × elmax + 0,85 × elmin + 1,3 × PSB
) / (0,15 × PCHP100+Sup100
 + 0,85 × PCHP100+Sup0
)




OR a default value as set out in EN 15316-4-1 may be applied.










(c)


The correction F(3) accounts for a negative contribution to the seasonal space heating energy efficiency by standby heat loss and is given as follows:






—


for fuel boiler space heaters and fuel boiler combination heaters:
F(3) = 0,5 × Pstby
 / P4












—


for electric boiler space heaters and electric boiler combination heaters:
F(3) = 0,5 × Pstby
 / (P4
 × CC)










—


for cogeneration space heaters not equipped with supplementary heaters:
F(3) = 0,5 × Pstby
 / PCHP100+Sup0












—


for cogeneration space heaters equipped with supplementary heaters:
F(3) = 0,5 × Pstby
 / PCHP100+Sup100






OR a default value as set out in EN 15316-4-1 may be applied.










(d)


The correction F(4) accounts for a negative contribution to the seasonal space heating energy efficiency by ignition burner power consumption and is given as follows:






—


for fuel boiler space heaters and fuel boiler combination heaters:
F(4) = 1,3 × Pign
 / P4












—


for cogeneration space heaters not equipped with supplementary heaters:
F(4) = 1,3 × Pign
 / PCHP100+Sup0












—


for cogeneration space heaters equipped with supplementary heaters:
F(4) = 1,3 × Pign
 / PCHP100+Sup100
















(e)


For cogeneration space heaters, the correction F(5) accounts for a positive contribution to the seasonal space heating energy efficiency by the electrical efficiency and is given as follows:






—


for cogeneration space heaters not equipped with supplementary heaters:
F(5) = - 2,5 × ηel,CHP100+Sup0












—


for cogeneration space heaters equipped with supplementary heaters:
F(5) = - 2,5 × (0,85 × ηel,CHP100+Sup0
 + 0,15 × ηel,CHP100+Sup100
)








5.   Additional elements for calculations related to the seasonal space heating energy efficiency of heat pump space heaters and heat pump combination heaters
5.1.   Calculation of the seasonal space heating energy efficiency
The seasonal space heating energy efficiency ηs
 is defined as






(a)


for heat pump space heaters and heat pump combination heaters using electricity:

ηs
 = (100/CC) × SCOP - ΣF(i)










(b)


for heat pump space heaters and heat pump combination heaters using fuels:

ηs
 = SPER - ΣF(i)




F(i) are corrections calculated according to point 5.2 and expressed in %. SCOP and SPER shall be calculated according to the tables in 5.3, and are expressed in %.
5.2.   Calculation of F(i)








(a)


The correction F(1) accounts for a negative contribution to the seasonal space heating energy efficiency of heaters due to adjusted contributions of temperature controls to seasonal space heating energy efficiency of packages of space heater, temperature control and solar device or of packages of combination heater, temperature control and solar device, as set out in point 6.2. For heat pump space heaters and heat pump combination heaters, the correction is F(1) = 3 %.












(b)


The correction F(2) accounts for a negative contribution to the seasonal space heating energy efficiency by electricity consumption of ground water pump(s) expressed in %. For water-/brine-to-water heat pump space heaters and heat pump combination heaters, the correction is F(2) = 5 %.




5.3   Hours for the calculation of SCOP or SPER
For the calculation of SCOP or SPER the following reference number of hours that the units work in active mode, thermostat off mode, standby mode, off more and crankcase heater mode shall be used:

Table 1


Number of hours used for heating only











 


on mode


thermostat-off mode


standby mode


Off mode


crankcase heater mode




 



HHE





HTO





HSB





HOFF





HCK







Average climate (h/y)



2 066


178


0


3 672


3 850





Warmer climate (h/y)



1 336


754


0


4 416


5 170





Colder climate (h/y)



2 465


106


0


2 208


2 314








Table 2


Number of hours used for reversible heat pumps











 


on mode


thermostat-off mode


standby mode


Off mode


crankcase heater mode




 



HHE





HTO





HSB





HOFF





HCK







Average climate (h/y)



2 066


178


0


0


178





Warmer climate (h/y)



1 336


754


0


0


754





Colder climate (h/y)



2 465


106


0


0


106






HHE
, HTO
, HSB
, HCK
, HOFF

= Number of hours the unit is considered to work in respectively, active mode, thermostat off mode, standby mode, crankcase heater mode and off mode.
6.   Additional elements for calculations related to the contribution of temperature controls to the seasonal space heating energy efficiency of packages of space heater, temperature control and solar device or of packages of combination heater, temperature control and solar device
6.1.   Definitions
In addition to the definitions set out in Commission Regulation (EU) No 813/2013, and Commission Delegated Regulation (EU) No 811/2013, the following definitions apply:






—


‘modulating heater’ means a heater with the capability of vary power output whilst maintaining continuous operation;




Definition of temperature controls classes
—   Class I - On/off Room Thermostat: A room thermostat that controls the on/off operation of a heater. Performance parameters, including switching differential and room temperature control accuracy are determined by the thermostat's mechanical construction.
—   Class II - Weather compensator control, for use with modulating heaters: A heater flow temperature control that varies the set point of the flow temperature of water leaving the heater dependant upon prevailing outside temperature and selected weather compensation curve. Control is achieved by modulating the output of the heater.
—   Class III - Weather compensator control, for use with on/off output heaters: A heater flow temperature control that varies the set point of the flow temperature of water leaving the heater dependant upon prevailing outside temperature and selected weather compensation curve. Heater flow temperature is varied by controlling the on/off operation of the heater.
—   Class IV - TPI room thermostat, for use with on/off output heaters: An electronic room thermostat that controls both thermostat cycle rate and in-cycle on/off ratio of the heater proportional to room temperature. TPI control strategy reduces mean water temperature, improves room temperature control accuracy and enhances system efficiency.
—   Class V - Modulating room thermostat, for use with modulating heaters: An electronic room thermostat that varies the flow temperature of the water leaving the heater dependant upon measured room temperature deviation from room thermostat set point. Control is achieved by modulating the output of the heater.
—   Class VI - Weather compensator and room sensor, for use with modulating heaters: A heater flow temperature control that varies the flow temperature of water leaving the heater dependant upon prevailing outside temperature and selected weather compensation curve. A room temperature sensor monitors room temperature and adjusts the compensation curve parallel displacement to improve room comfort. Control is achieved by modulating the output of the heater.
—   Class VII - Weather compensator and room sensor, for use with on/off output heaters: A heater flow temperature control that varies the flow temperature of water leaving the heater dependant upon prevailing outside temperature and selected weather compensation curve. A room temperature sensor monitors room temperature and adjusts the compensation curve parallel displacement to improve room comfort. Heater flow temperature is varied by controlling the on/off operation of the heater.
—   Class VIII - Multi-sensor room temperature control, for use with modulating heaters: An electronic control, equipped with 3 or more room sensors that varies the flow temperature of the water leaving the heater dependant upon the aggregated measured room temperature deviation from room sensor set points. Control is achieved by modulating the output of the heater.
6.2.   Contribution of temperature controls to seasonal space heating energy efficiency of packages of space heater, temperature control and solar device or of packages of combination heater, temperature control and solar device













Class No.


I


II


III


IV


V


VI


VII


VIII




Value in %


1


2


1,5


2


3


4


3,5


5




7.   Energy inputs
Definitions






—


‘uncertainty of measurement (accuracy)’ is the precision with which an instrument or a chain of instruments is capable to represent an actual value as established by a highly-calibrated measurement reference;










—


‘permissible deviation (average over test period)’ is the maximum difference, negatively or positively, allowed between a measured parameter, averaged over the test period, and a set value;










—


‘permissible deviations of individual measured values from average values’ is the maximum difference, negatively or positively, allowed between a measured parameter and the average value of that parameter over the test period;




(a)   Electricity and fossil fuels









Measured parameter


Unit


Value


Permissible deviation (average over test period)


Uncertainty of measurement (accuracy)





Electricity





Power


W


 


 


± 2 %




Energy


kWh


 


 


± 2 %




Voltage, test-period > 48 h


V


230 / 400


± 4 %


± 0,5 %




Voltage, test-period < 48h


V


230 / 400


± 4 %


± 0,5 %




Voltage, test-period < 1 h


V


230 / 400


± 4 %


± 0,5 %




Electric current


A


 


 


± 0,5 %




Frequency


Hz


50


± 1 %


 





Gas





Types


—


Test gases EN 437


 


 




Net calorific value (NCV) and
Gross calorific value (GCV)


MJ/m3



Test gases EN 437


 


± 1 %




Temperature


K


288,15


 


± 0,5




Pressure


mbar


1 013,25


 


± 1 %




Density


dm3/kg


 


 


± 0,5 %




Flow rate


m3/s or l/min


 


 


± 1 %





Oil






Heating gas oil





Composition, Carbon/ Hydrogen/ Sulfur


kg/kg


86/13,6/0,2 %


 


 




N-fraction


mg/kg


140


± 70


 




Net calorific value (NCV, Hi)


MJ/kg


42,689 (2)



 


 




Gross calorific value (GCV, Hs)


MJ/kg


45,55


 


 




Density ρ15 at 15 °C


kg/dm3



0,85


 


 





Kerosene





Composition, Carbon/ Hydrogen/ Sulfur


kg/kg


85/14,1/0,4 %


 


 




Net calorific value (NCV, Hi)


MJ/kg


43,3 (2)



 


 




Gross calorific value (GCV, Hs)


MJ/kg


46,2


 


 




density ρ15 at 15 °C


kg/dm3



0,79


 


 







(b)   Solar energy for solar collector tests









Measured parameter


Unit


Value


Permissible deviation (average over test period)


Uncertainty of measurement (accuracy)




Test solar irradiance (global G, short wave)


W/m2



> 700 W/m2



± 50 W/m2 (test)


± 10 W/m2 (indoors)




Diffuse solar irradiance (fraction of total G)


%


< 30 %


 


 




Thermal irradiance variation (indoors)


W/m2



 


 


± 10 W/m2





Fluid temperature at collector inlet/outlet


°C/ K


range 0-99 °C


± 0,1 K


± 0,1 K




Fluid temperature difference inlet/outlet


 


 


 


± 0,05 K




Incidence angle (to normal)


°


< 20°


± 2 % (<20°)


 




Air speed parallel to collector


m/s


3 ± 1 m/s


 


0,5 m/s




Fluid flow rate (also for simulator)


kg/s


0,02 kg/s per m2 collector aperture area


± 10 % between tests


 




Pipe heat loss of loop in test


W/K


<0,2 W/K


 


 




(c)   Ambient heat energy









Measured parameter


Unit


Permissible deviation (average over test period)


Permissible deviations (individual tests)


Uncertainty of measurement (accuracy)





Brine or water heat source






Water/brine inlet temperature



°C


± 0,2


± 0,5


± 0,1





Volume flow



m3/s or l/min


± 2 %


± 5 %


± 2 %




Static pressure difference


Pa


—


± 10 %


± 5 Pa/ 5 %





Air heat source






Outdoor air temperature (dry bulb) Tj




°C


± 0,3


± 1


± 0,2





Vent exhaust air temperature



°C


± 0,3


± 1


± 0,2




Indoor air temperature


°C


± 0,3


± 1


± 0,2





Volume flow



dm3/s


± 5 %


± 10 %


± 5 %




Static pressure difference


Pa


—


± 10 %


± 5 Pa/ 5 %




(d)   Test conditions and tolerances on outputs










Measured parameter


Unit


Value


Permissible deviation (average over test period)


Permissible deviations (individual tests)


Uncertainty of measurement (accuracy)





Ambient






Ambient temperature indoors



°C or K


20 °C


± 1 K


± 2 K


± 1 K




Air speed heat pump (at water heater off)


m/s


< 1,5 m/s


 


 


 




Air speed other


m/s


< 0,5 m/s


 


 


 





Sanitary water





Cold water temperature solar


°C or K


10 °C


± 1 K


± 2 K


± 0,2 K




Cold water temperature other


°C or K


10 °C


± 1 K


± 2 K


± 0,2 K




Cold water pressure gas-fired water heaters


bar


2 bar


 


± 0,1 bar


 




Cold water pressure other (except electric instantaneous water heaters)


bar


3 bar


 


 


± 5 %




Hot water temperature gas-fired water heaters


°C or K


 


 


 


± 0,5 K




Hot water temperature electric instantaneous


°C or K


 


 


 


± 1 K




Water temperature (in-/outlet) other


°C or K


 


 


 


± 0,5 K




Volume flow rate heat pump water heaters


dm3/s


 


± 5 %


± 10 %


± 2 %




Volume flow rate Electric Instantaneous Water Heaters


dm3/s


 


 


 


≥10 l/min: ± 1 %
< 10 l/min: ± 0,1 l/min




Volume flow rate other water heaters


dm3/s


 


 


 


± 1 %






(1)  It is intended that these transitional methods will ultimately be replaced by harmonised standard(s). When available, reference(s) to the harmonised standard(s) will be published in the Official Journal of the European Union in accordance with Articles 9 and 10 of Directive 2009/125/EC.

(2)  Default value, if value is not determined calorimetrically. Alternatively, if volumetric mass and sulphur content are known (e.g. by basic analysis) the net heating value (Hi) may be determined with:

Hi = 52,92 – (11,93 × ρ15) – (0,3 –S) in MJ/kg