1.3 TECHNICAL FEATURES
65
ES
PT
ENG
* 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.
FORMAT DGT 25 OF 25 BF 30 BF
Heat output
Nominal kW 22.8 23.6 27.8
Reduced kW 8.5 7.5 9.0
Heat input
Nominal kW 25.0 25.5 30.0
Reduced kW 10.0 9.2 10.8
Thermal yield 100% useful 91.3 93.0 93.0
Thermal yield useful at 30% of load 90.1 90.5 91.1
Termal efficiency (CEE 92/42 directive)
!! !!! !!!
Losses after shutdown to 50°C (EN 483)
W182 82 92
Supply voltage V-Hz 230-50 230-50 230-50
Adsorbed power consumption W85 110 115
Electrical protection grade IP X4D X5D X5D
C.H. setting range °C 40÷80 40÷80 40÷80
Water content boiler l 3.40 3.25 3.50
Maximum water head bar 3 3 3
Maximum temperature °C 85 85 85
Header tank capacity l8 8 8
Header tank pressure bar 1.2 1.2 1.2
D.H.W. setting range °C 10÷60 10÷60 10÷60
D.H.W. flow rate (EN 625) l/min 10.9 11.3 13.0
Continuous D.H.W. flow rate Δt 30°C l/min 10.9 11.3 13.4
Minimum D.H.W. flow rate l/min 2.0 2.0 2.0
D.H.W pressure min/max bar 0.2/7 0.2/7 0.2/7
D.H.W. pressure min. nom. power bar 0.3 0.4 0.3
Smokes temperature min/max °C 83/110 94/116 100/125
Smokes flow min/max g/s 16/18 17/16 19/19
CE certification No. 1312BU5373 1312BU5372 1312BU5372
Category II
2H3+ II2H3+ II2H3+
Type of appliance B11 B S B22P-52P/C12-32-42-52-62-82 B22P-52P/C12-32-42-52-62-82
NOx emission class 3 (< 150 mg/kWh) 3 (< 150 mg/kWh) 3 (< 150 mg/kWh)
Weight when empty kg 26 30 31
Main burner nozzle
Quantity nozzles n° 13 11 13
Nozzle diameter G20 mm 1.30 1.30 1.30
Nozzle diameter G30/G31 mm 0.72 0.80 0.78
Gas consumption *
Natural gas (G20) m
3
/h 2.61 2.70 3.17
LPG (G30/G31) kg/h 1.96 2.01 2.37
Burner gas pressure min/max
Natural gas (G20) mbar 1.6/9.5 1.9/13.5 1.9/13.2
Butane (G30) mbar 4.6/27.7 3.7/27.9 4.1/26.8
Propane (G31) mbar 4.6/35.7 3.7/35.9 4.1/34.8
Gas supply pressure
Natural gas (G20) mbar 20 20 20
Butane (G30) mbar 28–30 28–30 28–30
Propane (G31) mbar 37 37 37
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