Heating
Heating input
Heating output
Efficiency
Maximum heating temperature
Expansion vessel effective capacity
Expansion vessel charge pressure
Maximum system capacity at 75°C
Safety valve,
maximum service pressure 3 bar
Products outlet diameter
Fresh air inlet diameter
Hot water
Heating input
Hot water output, automatically variable from 10,4 kW
Storage capacity
Maximum hot water temperature
Minimum hot water temperature
Specific flow rate
(for 35°C temp rise)
Threshold flow rate
Nominal water flow rate
Temp./pressure relief valve opening pressure
Temp./pressure relief valve opening temperature 90°C
Cylinder heat up time
Time to reheat 70% of storage to 60°C
Expansion valve setting
Expansion vessel charge pressure
Maximum operating pressure
Maximum supply pressure
Minimum operating pressure
Weight of appliance when empty
Weight of appliance when full
Electrical
Electrical supply
Maximum absorbed power
Level of protection
Fuse rating
1 Technical Data
adjustable from 12,5 kW
to 30,3 kW
from 42,650 BTU/H
to 103,383 BTU/H
adjustable from 10,4 kW
to 27,6 kW
from 35,484 BTU/H
to 94,170 BTU/H
82 %
87 °C
8 l
0,5 bar
180 l
60 mm
100 mm
adjustable from 12,5 kW
to 30,3 kW
from 42,650 BTU/H
to 103,383 BTU/H
to 27,6 kW
from 35,484 BTU/H
to 94,170 BTU/H
43 l
60 °C
37°C
11,4 l/min.
1 l/min.
11,3 l/min.
7 bar
4 min.
5 min.
6 bar
3.5 bar
3.5 bar
16 bar
0,7 bar
71 kg
110 kg
230 V
235 W
IP44
3A
Natural Gas (G20)
Ø Burner injector
Inlet pressure
Maxi. Burner pressure
Mini. Burner pressure
Gas rate maximum
Gas rate minimum
Butane Gas (G30)
Ø Burner injector
Inlet pressure
Maxi. Burner pressure
Mini. Burner pressure
Gas rate maximum
Gas rate minimum
Propane Gas (G31)
Ø Burner injector
Inlet pressure
Maxi. Burner pressure
Mini. Burner pressure
Gas rate maximum
Gas rate minimum
The Seasonal Efficiency Domestic Boilers UK (SEDBUK)
is, "D" 78.9%.
The value is used in the UK Government's Standard Assesment
Procedure (SAP) for energy rating of dwellings. The test data
from which it has been calculated have been certified by B.S.I.
WEIGHT 71 kg
The XTRAMAX is delivered in three
separate packages:
• The boiler
• The fixing jig
• The flue system
9
1,20 mm
20 mbar
13,8 mbar
2,16 mbar
3,20 m
3
/h
1,32 m
3
/h
0,77 mm
29 mbar
23,8 mbar
3,6 mbar
2,39 kg/h
0,99 kg/h
0,77 mm
37 mbar
30,8 mbar
3,6 mbar
2,35 kg/h
0,97 kg/h
Diagram 1.1
4000116705-2
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