12
ENGLISH
TECHNICAL DATA
DESCRIPTION
CIAO 20 S C.S.I.
CIAO 24 S C.S.I.
CIAO 24 S R.S.I.
Heating
Heat
input
kW
22,20
25,80
25,80
kcal/h
19.092
22.188
22.188
Maximum heat output
kW
20,60
23,94
23,94
kcal/h
17.717
20.590
20.590
Minimum heat input
kW
7,00
8,90
8,90
kcal/h
6.020
7.654
7.654
Minimum heat output
kW
5,88
7,61
7,61
kcal/h
5.057
6.544
6.544
DHW
Heat
input
kW
22,20
25,80
-
kcal/h
19.092
22.188
-
Maximum heat output
kW
20,60
23,94
-
kcal/h
17.717
20.590
-
Minimum heat input
kW
7,00
8,90
-
kcal/h
6.020
7.654
-
Minimum heat output
kW
5,88
7,61
-
kcal/h
5.057
6.544
-
Useful efficiency (Pn max - Pn min)
%
92,8 - 84,0
92,8 - 85,5
92,8 - 85,5
Efficiency 30% (47° return)
%
91,9
90,9
90,9
Combustion performance
%
93,2
93,0
93,0
Electric power
W
100
116
116
Category
II2H3+
II2H3+
II2H3+
Country of destination **
-
-
-
Power supply voltage
V - Hz
230-50
230-50
230-50
Degree of Protection
IP
X5D
X5D
X5D
Pressure drops on flue with burner on
%
6,85
6,96
6,96
Pressure drops on flue with burner off
%
0,09
0,07
0,07
Heating operation
Pressure - maximum temperature
bar-°C
3 - 90
3 - 90
3 - 90
Minimum pressure for standard operation
bar
0,25 - 0,45
0,25 - 0,45
0,25 - 0,45
Selection field of heating water temperature
°C
40/80
40/80
40/80
Pump: maximum head available
mbar
300
300
300
for system capacity
l/h
1.000
1.000
1.000
Membrane expansion tank
l
7
8
8
Expansion tank pre-charge
bar
1
1
1
DHW operation
Maximum pressure
bar
6
6
-
Minimum pressure
bar
0,15
0,15
-
Hot water quantity with
∆
t 25°C
l/min
11,8
13,7
-
with
∆
t 30°C
l/min
9,8
11,4
-
with
∆
t 35°C
l/min
8,4
9,8
-
DHW minimum output
l/min
2
2
-
Selection field of DHW temperature
°C
37/60
37/60
-
Flow regulator
l/min
8
10
-
Gas pressure
Methane gas nominal pressure (G20)
mbar
20
20
20
LPG liquid gas nominal pressure (G30/G31)
mbar
28-30/37
28-30/37
28-30/37
Hydraulic connections
Heating input - output
Ø
3/4"
3/4"
3/4"
DHW input-output
Ø
1/2"
1/2"
-
Water tank delivery - output
Ø
-
-
3/4"
Gas input
Ø
3/4"
3/4"
3/4"
Boiler dimensions
Height
mm
715
715
715
Width
mm
405
405
405
Depth of housing
mm
248
248
248
Boiler weight
kg
29
31
28
Flow rate (G20)
Air capacity
Nm
3/
h
36,875
39,613
39,613
Flue gas capacity
Nm
3
/h
39,101
42,204
42,204
Mass flow of flue gas (max-min)
gr/s
13,310 - 14,540
14,308-16,247
14,308-16,247
Flow rate (G30)
Air capacity
Nm
3/
h
35,328
40,249
40,249
Flue gas capacity
Nm
3
/h
36,955
41,008
41,008
Mass flow of flue gas (max-min)
gr/s
13,100 - 14,030
13,985 - 16,429
13,985 - 16,429
