ENGLISH
12
TECHNICAL DATA
DESCRIPTION
CIAO AT
25 C.S.I. 29 C.S.I.
Category II2H3P II2H3P
Country of destination (+)
Type of appliance
B22P, B52P; C12,C12x; C22; C32,C32x; C42,C42x; C52,C52x; C82,C82x; C92,C92x
Heating
Nominal heat input (Hi)
kW 25,00 29,00
kcal/h 21.500 24.940
Nominal heat output (80-60°C)
kW 24,35 28,30
kcal/h 20.941 24.341
Nominal heat output (50-30°C)
kW 25,90 29,93
kcal/h 22.274 25.738
Reduced heat input (Hi)
kW 15,00 15,00
kcal/h 12.900 12.900
Reduced heat output (80-60°C)
kW 14,25 14,28
kcal/h 12.255 12.281
Reduced heat output (50-30°C)
kW 14,85 14,75
kcal/h 12.771 12.681
Domestic hot water
Nominal heat input (Hi)
kW 25,00 29,00
kcal/h 21.500 24.940
Nominal heat output (*)
kW 25,00 29,00
kcal/h 21.500 24.940
Reduced heat input (Hi)
kW 9,50 9,90
kcal/h 8.170 8.514
Reduced heat output (*)
kW 9,50 9,90
kcal/h 8.170 8.514
Useful efciency Pn max - Pn min (80°-60°) % 97,4-95,0 97,6-95,2
Useful efciency Pn max - Pn min (50°-30°) % 103,6-99,0 103,2-98,3
Useful efciency 30% (47° return) % 95,2 95,8
Useful efciency 30% (30° return) % 100,1 99,5
Combustion efciency % 97,5 97,7
Electric power W 129 114
Circulator electric power (1.000 l/h) W 39 39
Power supply voltage V - Hz 230-50 230-50
Electrical protection IP X5D X5D
Pressure drops on ue with burner on % 2,47 2,29
Pressure drops on ue with burner off % 0,09 0,08
Residual head of concentric pipes 0.85m ø 60-100 Pa 25 20
Residual head of separate pipes 0.5m ø 80 Pa 108 100
Residual head of boiler without pipes Pa 140 130
Heating operation
Maximum pressure bar 3 3
Maximum temperature °C 90 90
Minimum pressure for standard operation bar 0,25-0,45 0,25-0,45
Selection eld of heating water temperature °C 40-80 40-80
Pump: maximum head available mbar 266 266
for system capacity l/h 1.000 1.000
Membrane expansion tank l 8 9
Expansion tank pre-charge
bar
1 1
DHW operation
Maximum pressure bar 6 6
Minimum pressure bar
0,15 0,15
Quantity of hot water with ∆t 25°C l/min 14,3 16,6
with ∆t 30°C l/min 11,9 13,9
with ∆t 35°C l/min 10,2 11,9
DHW minimum capacity l/min 2 2
Selection eld of domestic hot water temperature
°C 37-60 37-60
Flow regulator l/min 10 12
NOx class 2 2
Gas pressure
Methane gas nominal pressure (G20) mbar 20 20
LPG liquid gas nominal pressure (G31) mbar 37 37
Hydraulic connections
Heating input-output Ø 3/4” 3/4”
DHW input-output Ø 1/2” 1/2”
Gas input Ø 3/4” 3/4”
Boiler dimensions
Height mm
780 780
Width mm 400 450
Depth of housing mm 332 332
Boiler weight kg 39 42
Flow rate CH DHW CH DHW
Air capacity
G20
Nm
3
/h
39,660 39,660 44,172 44,172
G31 40,208 40,208 43,393 43,393
Flue gas capacity
G20
Nm
3
/h
42,168 42,168 47,081 47,081
G31 42,147 42,147 45,643 45,643