# Commission Delegated Regulation (EU) 2015/1186 of 24 April 2015 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of local space heaters (Text with EEA relevance), Division 4: Specific conditions for seasonal space heating energy efficiency

Extent: E+W+S+N.I.

(a) The energy efficiency index (EEI) of all local space heaters is defined as:
EEI = η S,on × BLF − 10 % + F 2 + F 3 − F 4 − F 5 Where
ηS,on is the seasonal space heating energy efficiency in active mode, expressed in %, calculated as set out in point 4(b),
BLF is the biomass label factor, which is 1,45 for biomass local space heaters and 1 for fossil fuel local space heaters,
F(2) is a correction factor accounting for a positive contribution to the energy efficiency index due to adjusted contributions of controls of indoor heating comfort, the values of which are mutually exclusive, cannot be added on top of each other, expressed in %,
F(3) is a correction factor accounting for a positive contribution to the energy efficiency index due to adjusted contributions of controls for indoor heating comfort the values of which can be added on top of each other, expressed in %;
F(4) is a correction factor accounting for a negative contribution to the energy efficiency index by auxiliary electricity consumption, expressed in %;
F(5) is a correction factor accounting for a negative contribution to the energy efficiency index by energy consumption of a permanent pilot flame, expressed in %.
(b) The seasonal space heating energy efficiency in active mode is calculated as:
ηS,on= ηth,nom
Where
ηth,nom is the useful efficiency at nominal heat output, based on NCV.
(c) The correction factor F(2) accounting for a positive contribution to the energy efficiency index due to adjusted contributions of controls for indoor heating comfort, the values of which are mutually exclusive or cannot be added to each other, is calculated as follows:
For all local space heaters the correction factor F(2) is equal to one of the factors according to Table 4, depending on which control characteristic applies. Only one value can be selected.
Table 4
Correction factor F(2)
If the product is equipped with (only one option may apply):
F(2)
Fuel fired local space heaters
single stage heat output, no room temperature control
0,0 %
two or more manual stages, no temperature control
1,0 %
with mechanic thermostat room temperature control
2,0 %
with electronic room temperature control
4,0 %
with electronic room temperature control plus day timer
6,0 %
with electronic room temperature control plus week timer
7,0 %
From 1 January 2022, F(2) shall be zero for solid fuel local space heaters with emissions, where the temperature control is set at the minimum heat output, higher than those set out in Annex II, point 2 of Commission Regulation (EU) 2015/1185. The heat output in this setting must not be higher than 50 % of the nominal heat output. From 1 January 2022, if F(2) is not zero the technical documentation shall include the relevant information on emissions at minimum heat output.
(d) The correction factor F(3) accounting for a positive contribution to the energy efficiency index due to adjusted contributions of controls for indoor heating comfort, the values of which can be added to each other, is calculated as follows:
For all local space heaters the correction factor F(3) is the summation of the values according to Table 5, depending on which control characteristic(s) applies.
Table 5
Correction factor F(3)
If the product is equipped with (multiple options may apply):
F(3)
Fuel fired local space heaters
room temperature control with presence detection
1,0 %
room temperature control with open window detection
1,0 %
with distance control option
1,0 %
From 1 January 2022, F(3) shall be zero for solid fuel local space heaters with emissions, where the temperature control is set at the minimum heat output, higher than those set out in Annex II, point 2 of Regulation (EU) 2015/1185. The heat output in this setting must not be higher than 50 % of the nominal heat output. From 1 January 2022, if F(3) is not zero the technical documentation shall include the relevant information on emissions at minimum heat output.
(e) The auxiliary electricity use correction factor F(4) is calculated as:
This correction factor takes into account the auxiliary electricity consumption during on-mode and standby-mode operation.
For all local space heaters the auxiliary electricity consumption correction is calculated as follows:
F 4 = CC × 0,2 × el max + 0,8 × el min + 1,3 × el sb P nom × 100 % Where
elmax is the electric power consumption at nominal heat output, expressed in kW;
elmin is the electric power consumption at minimum heat output, expressed in kW. In case the product does not offer a minimum heat output the value for the electric power consumption at nominal heat output shall be used;
elsb is the electric power consumption of the product while in standby mode, expressed in kW,
Pnom is the nominal heat output of the product, expressed in kW.
(f) The correction factor F(5) related to the energy consumption of a permanent pilot flame is calculated as follows:
This correction factor takes into account the permanent pilot flame power requirement.
For all local space heaters the correction factor is calculated as:
F 5 = 0,5 × P pilot P nom × 100 % Where
Ppilot is the pilot flame consumption, expressed in kW,
Pnom is the nominal heat output of the product, expressed in kW.

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Source: https://www.legislation.gov.uk/eur/2015/1186/annex/VIII/division/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2015-1186/annex-VIII/division-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.