Solar Contribution
from fiche of solar device
Water Heating Energy Efficiency of Package under Average Climate
Water Heating Energy Efficiency Class of Package under Average Climate
Water Heating Energy Efficiency under Colder and Warmer Climate Conditions
Colder:
Warmer:
The energy efficiency of the package of products provided for in this fiche may not correspond to its actual energy
efficiency once installed in a building, as this efficiency is influenced by further factors such as heat loss in the
distribution system and the dimensioning of the products in relation to building size and characteristics.
''I' The value of the water heating energy efficiency of the combination heater, expressed in %.
'II' The value of the mathematical expression (220 . Qref)/Qnonsol, where Qref is taken from Regulation EU
811/2013, Annex VII Table15 and Qnonsol from the product fiche of the solar device for the declared load profile
M, L, XL or XXL of the combination heater.
'III' The value of the mathematical expression (Qaux . 2,5)/(220 . Qref), expressed in %, where Qaux is taken from
the product fiche of the solar device and Qref from Regulation EU 811/2013, Annex VII Table 15 for the declared
load profile M, L, XL or XXL.
Auxillary electricity
( 1.1 x 'I' - 10 % ) x 'II' -
'III' - 'I' = +
%
%
3
2
- 0.2 x
=
%
+ 0,4
x
=
%
3
2
2
3
21
