9
2
Parameter
Symbol
Compact
25 A DIN
Compact
29 A DIN
Compact
32 A DIN
Unit
Seasonal space heating energy efficiency class
-
A
A
A
-
Water heating energy efficiency class
-
A
A
A
-
Rated heat output
Pnominal
20
24
24
kW
Seasonal space heating energy efficiency
ηs
93
93
93
%
Useful heat output
At rated heat output and high-temperature regime (*)
P4
19,5
24,5
24,5
kW
At 30% of rated heat output and low-temperature regime (**)
P1
6,5
8,1
8,1
kW
Useful efficiency
At rated heat output and high-temperature regime (*)
η4
87,7
87,6
87,6
%
At 30% of rated heat output and low-temperature regime (**)
η1
97,8
97,8
97,8
%
Auxiliary electricity consumption
At full load
elmax
29,0
38,0
38,0
W
At part load
elmin
10,4
12,8
13,1
W
In Stand-by mode
PSB
2,4
2,0
2,4
W
Other parameters
Stand-by heat loss
Pstby
40,0
35,0
35,0
W
Pilot flame energy consumption
Pign
-
-
-
W
Annual energy consumption
QHE
53
63
63
GJ
Sound power level, indoors
LWA
53
56
56
dB
Emissions of nitrogen oxides
NOx
30
30
30
mg/kWh
For combination heaters
Declared load profile
XL
XL
XL
Water heating energy efficiency
ηwh
85
85
86
%
Daily electricity consumption
Qelec
0,109
0,120
0,138
kWh
Daily fuel consumption
Qfuel
22,920
23,021
22,717
kWh
Annual electricity consumption
AEC
24
26
30
kWh
Annual fuel consumption
AFC
17
17
17
GJ
(*) High-temperature regime means 60 °C return temperature at heater inlet and 80 °C feed temperature at heater outlet.
(**) Low temperature means for condensing boilers 30 °C, for low-temperature boilers 37 °C and for other heaters 50 °C return tem-
perature (at heater inlet).
EN
