Figure 5
Water heating energy eciency of combination heater
Water heating energy eciency class of package under average climate
(1,1 x ‘I’ - 10%) x ‘II’ - - ‘I’ =
Auxiliary electricity
Solar contribution - From che of solar device
Declared load prole:
‘I’
%
1
+
%
3
%
2
‘III’
< 27 % ≥ 27 %
< 27 % ≥ 27 %
≥ 30 %
≥ 30 % ≥ 34 % ≥ 37 % ≥ 50 % ≥ 75 % ≥ 115 % ≥ 150 % ≥ 188 %
< 27 % ≥ 27 % ≥ 30 % ≥ 35 % ≥ 38 % ≥ 55 % ≥ 80 % ≥ 125 % ≥ 160 % ≥ 200 %
< 28 % ≥ 28 % ≥ 32 % ≥ 36 % ≥ 40 % ≥ 60 % ≥ 85 % ≥ 131 % ≥ 170 % ≥ 213 %
≥ 33 % ≥ 36 % ≥ 39 % ≥ 65 % ≥ 100 % ≥ 130 % ≥ 163 %
G
M
L
XL
XXL
F E D C B A
A
+
A
++
A
+++
Water heating energy eciency under colder and warmer climate conditions
- 0,2 x
+ 0,4 x
=
=
Colder:
Warmer:
3
3
2
2
%
%
Water heating energy eciency of package under average climate
The energy efciency of the package of products provided for
this che may not correspond to its actual energy efciency
once installed in a building, as the efciency is inuenced by
further factors such as heat loss in the distribution system and
the dimensioning of the products in relation to building size and
characteristics.
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