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23. Technical data
Model COMBI A 24 MFFI
C
E certificate
1
312-BP-4083
Performance category ****
NoX class 5
Category II2H3P
C
entral Heating input (min/max) kW
7
.5 to 25
Central Heating output (min/max) 80°C/60°C kW 7 to 24
Central Heating output (max) 50°C/30°C kW 26
D
omestic Hot Water input (max) kW
2
5
Domestic Hot Water output (max) kW 24
SEDBUK rating / SAP efficiency Band / % A / 90.0
Nominal gas flow rate (15 °C-1013 mbar) min max
Central Heating & DHW flow rate Qn kW 7.5 25
G 20 (NG H -Lacq) 34.02 MJ/m
3
under 20 mbar Vr m
3
/h 0.79 2.65
G 31 (Propane) 46.4 MJ/kg 37 under mbar Vr kg/h 0.58 1.94
Membrane Diameter (mm)/marking
G 20 mm without
G 31 (propane) mm 4.4
Adjustable heating outlet temperature: °C 25 to 85
Central heating minimum flow rate I/h 300
Central heating circuit maximum pressure Pw max bar
2.5
Central heating expansion vessel capacity L 6
Expansion vessel inflation pressure bar 0.7
Adjustable hot water temperature °C 40 to 70
Minimum DHW ignition flow rate l/min. 2
DHW specific flow rate (∆T: 35
o
C) I/min.
9.8
DHW start minimum pressure
Pw min
bar
0.5
Maximum pressure of DHW circuit Pw max bar
10
DHW expansion vessel L without
Electric voltage 230 volt, single phase - 50 Hz
Electrical input power W 150
Electrical protection IPX 4D
Fresh air flow rate required for combustion
V
m
3
h. 29
Mass flow rate for combustion products g/s 10.9
Fume temperature (60-80) °C 79
Fume temperature (30-50) °C 60
CO2 G20 % 9.5
CO2 G31 % 10
Dimensions
Height / Width / Depth (mm)
720 / 390 / 296
Weight kg 37
Flue duct type C13 C33 C43 C53
Maximum Flue Length (Ø 60/100) m
5
Maximum Flue Length (Ø 80/125) m 10
Maximum Flue Length (
Ø 80/80) m
60
This appliance is suitable for Natural gas or LPG. A gas conversion must be made by a competent person.
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