42
* Gas consumption figures express the lowest calorific power of pure gas under standard conditions at 15°C – 1013 mbar; this figure may differ from the actual
figure, which is dependent on gas composition and environmental conditions.
Models 25 OF 30 OF 25 BF 30 BF 35 BF 20 BFT 25 BFT
Heat output
Nominal kW 23.0 27.0 23.7 28.0 32.4 19.8 23.7
Reduced kW 8.7 10.2 8.8 10.4 11.8 7.3 8.8
Heat input
Nominal kW 25.5 30.0 25.5 30.0 34.8 21.3 25.5
Reduced kW 10.2 12.0 10.2 12.0 13.5 8.5 10.2
Thermal yield 100% useful 90.0 90.0 93.0 93.3 93.1 93.0 93.0
Thermal yield useful at 30% of load 89.5 89.5 92.0 92.0 92.0 92.0 92.0
Termal efficiency (CEE 92/42 directive)
êê
êê êêê êêê êêê êêê êêê
Losses after shutdown to 50°C (EN 483)
W 200 235 89 96 96 89 89
Supply voltage V-Hz 230-50 230-50 230-50 230-50 230-50 230-50 230-50
Adsorbed power consumption W 75 90 100 115 135 105 105
Electrical protection grade IP X4D X4D X4D X4D X4D X4D X4D
C.H. setting range °C 20÷80 20÷80 20÷80 20÷80 20÷80 20÷80 20÷80
Water content boiler l 7.1 8.0 7.1 8.0 8.0 7.1 7.1
Maximum water head bar 3 3 3 3 3 3 3
Maximum temperature °C 85 85 85 85 85 85 85
Expansion vessel capacity l 7 8 7 8 8 7 7
Expansion vessel pressure bar 1 1 1 1 1 1 1
D.H.W. setting range °C 10÷65 10÷65 10÷65 10÷65 10÷65 - -
D.H.W. flow rate (EN 625) l/min 10.7 12.7 11.1 13.2 15.3 - -
Continuous D.H.W. flow rate ∆t 30°C l/min 10.9 12.9 11.3 13.4 15.5 - -
Minimum D.H.W. flow rate l/min 2.4 2.4 2.4 2.4 2.4 - -
D.H.W pressure min/max bar 0.2/7 0.2/7 0.2/7 0.2/7 0.2/7 - -
D.H.W. pressure min. nom. power bar 0.5 0.65 0.5 0.65 0.8 - -
Smokes temperature min/max °C 88/122 95/135 100/125 100/125 95/130 95/115 100/125
Smokes flow min/max g/s 18/20 18/20 16/16 18/18 21/21 15/15 16/16
PIN number 1312BU5345 1312BU5344
Category II2H3+ II2H3+
Type of appliance B11BS B22P-52P/C12-32-42-52-62-82
NOx emission class 3 (<150 mg/kWh) 3 (<150 mg/kWh)
Weight when empty kg 30 33 38 40 40 37 37
Main burner nozzle
Quantity nozzles n° 12 14 12 14 15 10 12
G20 nozzle diameter mm 1.30 1.30 1.30 1.30 1.30 1.30 1.30
G30/G31 nozzle diameter mm 0.77 0.77 0.77 0.77 0.80 0.76 0.77
Gas consumption *
Natural gas (G20) m
3
/h 2.70 3.17 2.70 3.17 3.68 2.25 2.70
LPG (G30/G31) kg/h 2.01 2.37 2.01 2.37 2.74 1.68 2.01
Burner gas pressure min/max
Natural gas (G20) mbar 1.8/11.0 1.9/11.1 2.0/11.8 2.1/12.0 2.2/13.7 1.9/11.0 2.0/11.8
Butane (G30) mbar 4.7/27.7 4.8/27.7 4.8/28.5 5.0/28.5 4.5/28.2 4.8/28.5 4.8/28.5
Propane (G31) mbar 4.7/35.7 4.8/35.7 4.8/36.5 5.0/36.5 4.5/36.2 4.8/36.5 4.8/36.5
Gas supply pressure
Natural gas (G20) mbar 20 20 20 20 20 20 20
Butane (G30) mbar 28–30 28–30 28–30 28–30 28–30 28–30 28–30
Propane (G31) mbar 37 37 37 37 37 37 37
1.3 TECHNICAL FEATURES
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