28 C.A.I.
Main burner (14 nozzles)
CH maximum gas capacity
DHW maximum gas capacity
CH minimum gas capacity
DHW minimum gas capacity
Maximum pressure downstream CH valve
Maximum pressure downstream DHW valve*
Minimum pressure downstream CH valve
Minimum pressure downstream DHW valve*
Parameter
Seasonal space heating energy efficiency class
Water heating energy efficiency class
Rated heat output
Seasonal space heating energy efficiency
Useful heat output
At rated heat output and high-temperature regime (*)
At 30% of rated heat output and low-temperature
regime (**)
Useful efficiency
At rated heat output and high-temperature regime (*)
At 30% of rated heat output and low-temperature
regime (**)
Auxiliary electricity consumption
At full load
At part load
In Stand-by mode
Other parameters
Stand-by heat loss
Pilot flame energy consumption
Annual energy consumption
Sound power level, indoors
Emissions of nitrogen oxides
For combination heaters
Declared load profile
Water heating energy efficiency
Daily electricity consumption
Daily fuel consumption
Annual electricity consumption
Annual fuel consumption
(*) 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
temperature (at heater inlet).
Ø mm
Sm
/h
3
kg/h
Sm
/h
3
kg/h
Sm
/h
3
kg/h
Sm
/h
3
kg/h
mbar
mm H
O
2
mbar
mm H
O
2
mbar
mm H
O
2
mbar
mm H
O
2
Symbol
24 C.A.I.
-
C
-
B
Pnominal
24
ηs
77
P4
24,0
P1
7,1
η4
80,9
η1
80,3
elmax
17,0
elmin
7,2
PSB
3,0
Pstby
135,0
Pign
-
QHE
90
LWA
54
NOx
143
XL
ηwh
78
Qelec
0,124
Qfuel
25,526
AEC
27
AFC
19
9
1,3
0,78
3,37
-
-
2,51
3,37
-
-
2,51
1,48
-
-
1,10
0,92
-
-
0,69
12,70
27,00
129,50
275,32
12,70
27,00
129,50
275,32
2,60
5,50
26,51
56,08
1,00
2,30
10,20
23,45
28 C.A.I.
C
B
29
77
28,7
8,5
81,0
80,3
14,0
6,3
3,0
141,0
-
107
53
143
XL
78
0,125
25,647
27
19
Exclusive C.A.I.
0,78
-
2,48
-
2,48
-
1,09
-
0,68
35,20
358,94
35,20
358,94
7,10
72,40
2,90
29,57
Unit
-
-
kW
%
kW
kW
%
%
W
W
W
W
W
GJ
dB
mg/kWh
%
kWh
kWh
kWh
GJ