54
EN
5.5 Technical features
DESCRIPTION
GO 18 BF GO 25 BF GO 30.BF
CERTIFICATIONS
Country of intended installation AZ - BY - CL - DZ - GE - IL - MA - MK - RS - RU - TN - UA - UZ
Fuel G20 - G30/G31
PIN number 431M
Category II2H3+
Type
B22P - B52P - C12 - C12X - C32 - C32X - C42 - C42X - C52 - C52X - C62 -
C62X - C82 - C82X - C92 - C92X
Class NO
x
3 (< 150 mg/kWh)
HEATING PERFORMANCE
HEAT INPUT
Nominal kW 20,5 25,5 28,5
Minimum (G20-G30/G31) kW 5,5 - 6,0 9,2 - 9,2 10,5 - 10,5
HEAT OUTPUT
Nominal (80-60°C) kW 19,0 23,5 26,2
Minimum (80-60°C) (G20-G30/G31) kW 4,5 - 4,9 7,6 - 7,6 8,7 - 8,7
EFFICIENCY
Max useful efficiency (80-60°C) % 92,6 92,0 92,0
Min useful efficiency (80-60°C) % 82,3 83,1 83,3
Useful efficiency at 30% of load (50-37°C) % 89,4 89,7 89,6
Losses after shutdown at 50°C W 79 81
DOMESTIC HOT WATER PERFORMANCE
Nominal heat input kW 20,5 25,5 28,5
Minimum heat input (G20-G30/G31) kW 5,5 - 6,0 9,2 - 9,2 10,5 - 10,5
D.H.W. flow rate ∆T 30°C (EN 13203) l/min 8,9 10,6 12,2
Continuous D.H.W. flow rate (∆T 25°C / ∆T 35°C) l/min 10,9 / 7,8 13,1 / 9,3 15,0 / 10,5
Minimum D.H.W. flow rate l/min 2,2
Max / Min Pressure
bar 7 / 0,4
kPa 700 / 40
ELECTRICAL SPECIFICATIONS
Power supply voltage V 230
Frequency Hz 50
Absorbed electrical power W 110 120
Electrical protection degree IP X5D
COMBUSTION DATA
Smoke temperature at Max/Min flow (80-60°C) °C 119,3 / 90,2 153,8 / 116,3 159,0 / 117,2
Smoke flow Max/Min g/s 13,8 / 13,4 16,9 / 17,2 18,9 / 20,6
CO
2
at Max/Min (G20) flow rate with separate chimneys
(*)
% 6,2 / 1,6 6,3 / 2,1 6,3 / 2,0
CO
2
at Max/Min (G30/G31) flow rate with separate
chimneys (*)
% 6,7 / 1,8 7,3 / 2,3 7,6 / 2,5
CO
2
at Max/Min (G20) flow rate with concentric
chimneys (**)
% 5,8 / 1,5 6,2 / 2,0 6,3 / 2,0
CO
2
at Max/Min (G30/G31) flow rate with concentric
chimneys (**)
% 6,5 / 1,8 7,4 / 2,3 7,7 / 2,4
NOx measured mg/kWh 109 123 122
NOZZLES GAS
Number of nozzles No. 11 12
Nozzle diameter (G20-G30/G31) mm 1,13 - 0,70 1,30 - 0,80 1,30 - 0,80
Gas consumption at Max/Min flow rate (G20) m
3
/h 2,17 / 0,58 2,70 / 0,97 3,02 / 1,11
Gas consumption at Max/Min flow rate (G30) kg/h 1,62 / 0,47 2,01 / 0,72 2,25 / 0,82
Gas consumption at Max/Min flow rate (G31) kg/h 1,59 / 0,46 1,98 / 0,71 2,21 / 0,81
Gas supply pressure (G20/G30/G31)
mbar 20 / 28-30 / 37
kPa 2 / 2,8-3 / 3,7
TEMPERATURE PRESSURE
Max operating temperature °C 85
Heating adjustment range °C 20 ÷ 80
Domestic hot water adjustment range °C 37 ÷ 60
Max operating pressure
bar 3
kPa 300
Water content in boiler l 3,05
(*) With minimum chimney length
(**) With maximum chimney length
Lower Heat Output (Hi)
G20 Hi.
9.45 kW/m
3
(15°C, 1013 mbar) -
G30 Hi.
12.68 kW/kg (15°C, 1013 mbar) -
G31 Hi.
12.87 kW/kg (15°C, 1013 mbar)
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