17
ENGLISH
Multigas table
DESCRIPTION
Methane gas
(G20)
Propane
(G31)
Lower Wobbe index (at 15°C-1013 mbar)
MJ/m
3
S
45,67
70,69
Net Calorific Value
MJ/m
3
S
34,02
88
Supply nominal pressure
mbar (mm
W.C.
)
20 (203,9)
37 (377,3)
Supply minimum pressure
mbar (mm
W.C.
)
10 (102,0)
Diaphragm (number of holes)
Number
1
1
25 C.S.I. 29 C.S.I. 25 C.S.I. 29 C.S.I.
Diaphragm (diameter of holes)
mm
4,8
5,1
3,8
3,9
Silencer diaphragm (diameter)
mm
31
-
27
29
CH maximum gas capacity
Sm
3
/h
2,12
2,64
kg/h
1,55
1,94
DHW maximum gas capacity
Sm
3
/h
2,64
3,07
kg/h
1,94
2,25
CH minimum gas capacity
Sm
3
/h
0,53
0,63
kg/h
0,39
0,47
DHW minimum gas capacity
Sm
3
/h
0,53
0,63
kg/h
0,39
0,47
Number of fan rotations with slow switch-on
rpm
4.000
4.000
4.000
4.000
Maximum number of fan rotations (CH)
rpm
4.900
5.300
4.900
5.200
Maximum number of fan rotations (DHW)
rpm
6.100
6.200
6.100
6.000
Minimum number of fan rotations (CH/DHW)
rpm
1.400
1.400
1.400
1.400
Maximum number of fan rotations (CH) in C(10) configuration
rpm
4.900
-
-
-
Maximum number of fan rotations (DHW) in C(10) configuration
rpm
6.100
-
-
-
Minimum number of fan rotations (CH/DHW) in C(10) configuration
rpm
1.400
-
-
-
Parameter
Symbol
CIAO GREEN
25 C.S.I.
CIAO GREEN
29 C.S.I.
Unit
Seasonal space heating energy efficiency class
-
A
A
-
Water heating energy efficiency class
-
A
A
-
Rated heat output
Pnominal
20
24
kW
Seasonal space heating energy efficiency
ηs
93
93
%
Useful heat output
At rated heat output and high-temperature regime (*)
P4
19,5
24,5
kW
At 30% of rated heat output and low-temperature regime (**)
P1
6,5
8,1
kW
Useful efficiency
At rated heat output and high-temperature regime (*)
η4
87,7
87,6
%
At 30% of rated heat output and low-temperature regime (**)
η1
97,8
97,8
%
Auxiliary electricity consumption
At full load
elmax
29,0
38,0
W
At part load
elmin
10,4
13,1
W
In Stand-by mode
PSB
2,4
2,4
W
Other parameters
Stand-by heat loss
Pstby
40,0
35,0
W
Pilot flame energy consumption
Pign
-
-
W
Annual energy consumption
QHE
53
63
GJ
Sound power level, indoors
LWA
53
56
dB
Emissions of nitrogen oxides
NOx
30
30
mg/kWh
For combination heaters
Declared load profile
XL
XL
Water heating energy efficiency
ηwh
85
85
%
Daily electricity consumption
Qelec
0,109
0,120
kWh
Daily fuel consumption
Qfuel
22,920
23,021
kWh
Annual electricity consumption
AEC
24
26
kWh
Annual fuel consumption
AFC
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
temperature (at heater inlet).
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