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Heat Input max/min kW 25.6/11.0
Heat Output max/min kW 23.1/9.2
Efficiency of Nominal Heat Input % 90.2
Efficiency at 30% of Nominal Heat Input % 87.8
Heat Loss to the Casing (³T=50°C) % 1.2
Flue Heat Loss with Burner Operating % 8.6
Flue Heat Loss with Burner Off % 0.4
Maximum Discharge of Fumes (G20-G25) Kg/h 59
Residual Discharge Head mbar 1.15
Consumption at Nominal Capacity (G20-G25)m
3
/h 2.72/3.32
Gas Consumption after 10 Minutes* m
3
0.32/0.39
(15°C, 1013 mbar) (G30-G31) Kg/h 2.02/2.00
Temp. of exhaust fumes at nominal
capacity (G20-G25) °C 137
CO
2
Content % 5.8
O
2
Content % 9.2
CO Content ppm 32
Minimum Ambient Temperature °C +5
Head Loss on Water Side (max) (³T=20°C) mbar 200
Residual Head of System bar 0.25
Heating Temperature max/min °C 82/42
Domestic Hot Water Temperature max/min °C 56/36
D.H.W. Flow Rate ³T=35°C l/min 9.5
D.H.W. Flow Rate ³T=35°C gal/min 2.1
D.H.W. Minimum Flow Rate l/min 2.6
Pressure of Domestic Hot Water max/min bar 6/0.2
Expansion Vessel Capacity l 7
Expansion Vessel Pre-load Pressure bar 1
Maximum Water Content in System l 145
Maximum Heating Pressure bar 3
Nominal Pressure Natural Gas (G20-G25) mbar 20-25
LPG (G30-G31) mbar 30-37
Electrical Supply V/Hz 230 / 50
Power Consumption W 150
Protection Grade of Electrical System IP 44
Internal Fuse Rating FAST 2 AT
Weight Kg. 47
G.C. Number 47-116-10
4
B023
1.2 Technical Information
chamber visually.
4 - Visual check of the combustion: clean burners if necessary.
5 - With reference to point 3, dismantle and clean the combustion chamber if
necessary.
6 - With reference to point 4, dismantle and clean the injectors if necessary.
7 - Visual check of the primary heat exchanger:
- check for overheating of the exchangers fins;
- clean the exhaust side of the exchanger and fan if necessary.
8 - Regulate the gas pressure, ignition pressure, partial flame, maximum
flame.
9 - Check proper operation of the heating safety system:
- maximum safety temperature;
- maximum safety pressure.
10 - Check the proper operation of the gas safety system:
- gas or flame safety device;
- gas valve safety device.
11 - Check that the electrical connections have been made in compliance with
the instructions shown in the installation instructions.
12 - Check the efficiency of the hot water supply (flow and temperature).
13 - Check general operation of the appliance.
14 - Check the exhaust system for the combustion products.
29.8/12.0
27.3/10.1
91.6
88.3
1.3
7.1
0.4
62
1.4
3.16/3.86
0.37/0.45
2.35/2.32
128
6.6
8.0
34
+5
200
0.25
82/42
56/36
11.2
2.5
2.6
6/0.2
7
1
145
3
20-25
30-37
230 / 50
190
44
FAST 2 AT
47
47-116-12
A/23 MFFI A/27 MFFI
*Calculated at 70% maximum output