Ariston HS PREMIUM Technical Instructions page 31

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Figure 5
Energy efficiency of water heating of the dual function heating system
Declared pregnancy pro:
Solar contribution - From the saddle of the solar device
Energy efficiency of water heating of the package in average climatic conditions
Energy efficiency classes related to water heating of the package in average climatic conditions
Energy efficiency related to water heating in colder or warmer climatic conditions
Colder:
Warmer:
G
F
AND
M
< 27 % ÿ 27 % ÿ 30 %
I
< 27 % ÿ 27 % ÿ 30 % ÿ 34 % ÿ 37 % ÿ 50 % ÿ 75 % ÿ 115 % ÿ 150 % ÿ 188 %
XL
< 27 % ÿ 27 % ÿ 30 % ÿ 35 % ÿ 38 % ÿ 55 % ÿ 80 % ÿ 125 % ÿ 160 % ÿ 200 %
XXL < 28 % ÿ 28 % ÿ 32 % ÿ 36 % ÿ 40 % ÿ 60 % ÿ 85 % ÿ 131 % ÿ 170 % ÿ 213 %
3 2
=
- 0,2 x
3 2
=
+ 0,4 x
(1,1 x 'I' - 10%) x 'II' -
BA A +
D
C
ÿ 33 % ÿ 36 % ÿ 39 % ÿ 65 % ÿ 100 % ÿ 130 % ÿ 163 %
%
%
The energy efficiency of the product package provided in this
worksheet may not correspond to its actual energy efficiency,
once installed in a building, because the energy efficiency is
influenced by other factors, such as heat loss in the distribution
system and product sizing. in relation to the size and
characteristics of the building.
TECHNICAL DATA
1
'I' %
Auxiliary electricity
2
'III' - 'I' =
+
3
A++ A+++
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%
%