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(80/60°) 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(80°/60°) kW 5,88 7,52 7,52
kcal/h
5.057 6.468 6.468
DHW Heat input kW
22,20 25,80 -
kcal/h 19.092 22.188 -
Maximumheatoutput(*) kW 20,60 23,94 -
17.717 20.590 -
Minimum heat input kW 7,00 8,90 -
kcal/h 6.020 7.654 -
Minimum heat output(*) kW 5,88 7,52 -
kcal/h 5.057 6.468 -
(*)averagevalueofvariousDHWoperatingconditions
Usefulefficiency(Pnmax-Pnmin) % 92,8-84,0 92,8-84,5 92,8-84,5
Efficiency30%(47°return) % 91,9 91,8 91,8
Combustion performance % 93,2 93,2 93,2
Electric power W
100 115 115
Category
II2H3+ II2H3+ II2H3+
Countryofdestination - - -
Powersupplyvoltage V - Hz 230-50 230-50 230-50
Degree of Protection IP X5D X5D X5D
Pressure drops on flue with burner on % 6,85 6,84 6,84
Pressure drops on flue with burner off % 0,09 0,08 0,08
Heating operation
Pressure - maximum temperature bar 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
forsystemcapacity 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 -
Hotwaterquantitywith∆t25°C l/min
11,8 13,7 -
with∆t30°C l/min 9,8 11,4 -
with∆t35°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
Methanegasnominalpressure(G20) mbar 20 20 20
LPGliquidgasnominalpressure(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" -
Watertankdelivery-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)
Aircapacity Nm
3/
h 36,875 39,743 39,743
Fluegascapacity Nm
3
/h
39,101 42,330 42,330
Massflowoffluegas(max-min) gr/s 13,310 - 14,540 14,360 - 15,600 14,360 - 15,600
Flow rate (G30)
Aircapacity Nm
3/
h 35,328 38,545 38,545
Fluegascapacity Nm
3
/h 36,955 40,436 40,436
Massflowoffluegas(max-min) gr/s 13,100 - 14,030 14,330 - 15,730 14,330 - 15,730