Ariston CLAS NET One - Page 74

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TECHNICAL DATA
Seasonal space heating energy eciency of boiler
Temperature control
From che of temperature control
Supplementary boiler
From che of boiler
( - ‘I’ ) x 0,1 =
Seasonal space heating energy eciency (in %)
Class
I = 1%, II = 2%, III = 1,5%, IV = 2%,
V = 3%, VI = 4 %, VII = 3,5%, VIII = 5%
‘I’
%
1
%
2
+
%
3
Seasonal space heating energy eciency (in %)
Solar contribution - From che of solar device
Solar contribution and supplementary heat pump
Seasonal space heating energy ecinency of package
Seasonal space heating energy ecinency class of package
Boiler and supplementary heat pump installed with low temperature heat emitters at 35 °C?
From che of heat pump
Supplementary heat pump
From che of heat pump
Select smaller value
( ‘III’ x + ‘IV’ x ) x 0,9 x ( /100 ) x =
( - ‘I’ ) x ‘II’ =
Collector size ( in m
2
) Tank volume ( in m
3
)
Collector eciency ( in %)
Tank rating
A* = 0,95, A = 0,91,
B = 0,86, C = 0,83, D-G = 0,81
%
4
4
+
%
5
5
+
%
6
%
%
7
0,5 x OR 0,5 x =
7
+ (50 x ‘II’) =
G F E D C B A
A
+
A
++
A
+++
< 30% ≥ 30 % ≥ 34 % ≥ 36 % ≥ 75 % ≥ 82 % ≥ 90 % ≥ 98 % ≥ 125 % ≥ 150%
Figure 1
The energy efciency of the package of products provided for
this che may not correspond to its actual energy efciency
once installed in a building, as the efciency is in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.