Alpha E-Tec Plus 28NX - Page 68

Alpha E-Tec Plus 28NX, 33NX and 38NX - Energy Classification
Water heating energy e󰀩ciency of combination heater
Water heating energy e󰀩ciency of package under average climate
Water heating energy e󰀩ciency class of package under average climate
Water heating energy e󰀩ciency under colder and warmer climate conditions
Colder : - 0.2 x =
Warmer : + 0.4 x =
Declared load prole:
Solar contribution
From che of solar device
1
%
‘I’
2
%
+
( 1.1 x ‘I’ - 10 % ) x ‘II’ - ‘III’ - ‘I’ =
Auxiliary electricity
3
%
G F E D C B A A
+++
A
++
A
+
< 27 %
< 27 %
< 27 %
< 28 %
≥ 27 %
≥ 27 %
≥ 27 %
≥ 28 %
≥ 30 %
≥ 30 %
≥ 30 %
≥ 32 %
≥ 33 %
≥ 34 %
≥ 35 %
≥ 36 %
≥ 36 %
≥ 37 %
≥ 38 %
≥ 40 %
≥ 39 %
≥ 50 %
≥ 55 %
≥ 60 %
≥ 65 %
≥ 75 %
≥ 80 %
≥ 85 %
≥ 100 %
≥ 115 %
≥ 123 %
≥ 131 %
≥ 130 %
≥ 150 %
≥ 160 %
≥ 170 %
≥ 163 %
≥ 188 %
≥ 200 %
≥ 213 %
M
L
XL
XXL
3 2
3 2
%
%
The energy eciency of the package of products provided for in this che may not correspond to its
actual energy eciency once installed in a building, as the e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.
12.4 FACSIMILE FOR FILLING IN DOMESTIC HOT WATER PRODUCTION SYSTEM ASSEMBLY CHART
68