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DESCRIPTION CIAO GREEN 25 C.S.I. CIAO GREEN 29 C.S.I.
Heating Heat input kW 20,00 25,00
kcal/h 17.200 21.500
Maximum heat output (80/60°) kW 19,50 24,45
kcal/h 16.770 21.027
Maximum heat output (50°/30°) kW 20,84 26,23
kcal/h 17.922 22.554
Minimum heat input kW 5,00 6,00
kcal/h 4.300 5.160
Minimum heat output (80°/60°) kW 4,91 5,90
kcal/h 4.218 5.072
Minimum heat output (50°/30°) kW 5,36 6,40
kcal/h 4.610 5.506
Nominal Range Rated heat output (Qn) kW 20,00 25,00
kcal/h 17.200 21.500
Minimum Range Rated heat output (Qm) kW 15,30 17,00
kcal/h 13.158 14.620
DHW Heat input kW 25,00 29,00
kcal/h 21.500 24.940
Maximum heat output (*) kW 25,00 29,00
kcal/h 21.500 24.940
Minimum heat input kW 5,00 6,00
kcal/h 4.300 5.160
Minimum heat output (*) kW 5,00 6,00
kcal/h 4.300 5.160
(*) average value of various DHW operating conditions
Useful efciency Pn max - Pn min (80°/60°) % 97,5-98,1 97,8-98,3
Efciency 30% (47° return) % 102,2 102,0
Combustion performance % 97,9 98,1
Useful efciency Pn max - Pn min (50°/30°) % 104,2-107,2 104,9-106,7
Efciency 30% (30° return) % 108,6 108,6
Average Range Rated efciency Pn (80°/60°) % 97,4 97,3
Electric power (CH) W 69 78
Electric power (DHW) W 83 90
Circulator electric power (1.000 l/h) W 40 40
Category ● Country of destination II2H3P ● (+) II2H3P ● (+)
Power supply voltage V - Hz 230-50 230-50
Degree of Protection IP X5D X5D
Pressure drops on ue with burner on % 2,10 1,93
Pressure drops on ue with burner off % 0,06 0,04
Heating operation
Pressure - maximum temperature bar-°C 3-90 3-90
Minimum pressure for standard operation bar 0,25-0,45 0,25-0,45
Selection eld of heating water temperature °C 20/45-40/80 20/45-40/80
Pump: maximum head available mbar 297 297
for system capacity l/h 800 800
Membrane expansion tank l 8 8
Expansion tank pre-charge bar 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 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 output l/min 2 2
Selection eld of DHW temperature °C 37-60 37-60
Flow regulator l/min 10 12
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”
TECHNICAL DATA