Ariston ALTEAS ONE Net Series Installation And Servicing Instructions page 72

TECHNICAL DATA
Figure 5
Water heating energy efficiency of combination heater
Declared load profile:
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
M
< 27 %
L
< 27 %
XL
< 27 %
XXL < 28 %
Water heating energy efficiency under colder and warmer climate conditions
3
Colder:
3
Warmer:
The energy effi ciency of the package of products provided for
this fi che may not correspond to its actual energy effi ciency
once installed in a building, as the effi ciency is infl uenced by
further factors such as heat loss in the distribution system and
the dimensioning of the products in relation to building size and
characteristics.
72 /
G F E
≥ 27 % ≥ 30 % ≥ 33 %
≥ 27 % ≥ 30 % ≥ 34 %
≥ 27 % ≥ 30 % ≥ 35 %
≥ 28 % ≥ 32 % ≥ 36 %
2
- 0,2 x =
2
+ 0,4 x =
(1,1 x 'I' - 10%) x 'II' -
D C B A
≥ 36 % ≥ 39 % ≥ 65 % ≥ 100 % ≥ 130 % ≥ 163 %
≥ 37 % ≥ 50 % ≥ 75 % ≥ 115 % ≥ 150 % ≥ 188 %
≥ 38 % ≥ 55 % ≥ 80 % ≥ 125 % ≥ 160 % ≥ 200 %
≥ 40 % ≥ 60 % ≥ 85 % ≥ 131 % ≥ 170 % ≥ 213 %
%
%
Auxiliary electricity
+
'III' - 'I' =
+ ++ +++
A A A
1
%
'I'
2
%
3
%