4
2 TECHNICAL DATA
Alpha InTec² 25XE and 28XE - Technical Data
2.1 TECHNICAL PERFORMANCE DATA - NATURAL GAS (Cat I2H 2H - G20 20 mbar)
2.1 TECHNICAL PERFORMANCE DATA - LPG - PROPANE GAS (Cat I3P 3P - G31 37 mbar)
Note: OtherTechnical data is the same as NG data.
31.9
27.3
28.7
24.6
25.5
24
3.5
28
3.04
20
85
6.15
11.7
13.7
13
18
11
5
9.0
9.1
9.0
9.0
21
200
0.003
90
88.8
86 (XL)
2.5
0.5
1.0
3.0
8.0
1.0
95
4.5
Heat input gross - DHW kW
Heat input gross - CH kW
Heat input net - DHW kW
Heat input net - CH kW
Heat output condensing (50/30°C) - CH kW
Heat output non condensing (80/60°C) CH kW
Heat output min. - CH kW
Heat output nominal - DHW kW
Gas rate at max. output m³/h
Gas supply pressure mbar
Max. CH temperature - Set point °C
Gas burner injector diameter mm
DHW flow rate at 35°C rise l/min
DHW flow rate at 30°C rise - EN13203-1 l/min
DHW flow regulator l/min
Dry NOx weight mg/kWh
Dry NOx ppm
NOx Class
Factory set CO
2
(± 0.8%)
CO
2
at maximum CH output %
CO
2
at maximum DHW output %
CO
2
at minimum output %
CO
2
at medium output (ignition) %
CO weight (nominal) mg/kWh
CO (max) ppm
Maximum CO/CO
2
Ratio
SAP/SEDBUK seasonality efficiency 2005 %
SAP/SEDBUK seasonality efficiency 2009 %
ErP DHW efficiency %
Max. primary system pressure bar
Min. primary system pressure bar
Recommended system pressure - Cold bar
System pressure relief valve setting bar
Expansion vessel size litres
Expansion vessel charge pressure bar
Electrical power consumption - Max. Watts
Electrical power consumption - Standby Watts
27.3
22.8
24.6
20.5
21.3
20
2.8
24
2.61
20
85
5.15
10.3
12
10
17
11
5
9.1
9.2
9.0
9.0
20
200
0.003
90
88.8
74 (M)
2.5
0.5
1.0
3.0
8.0
1.0
90
4.5
InTec² 25XE
InTec² 28XE
Heat input gross - DHW kW
Heat input gross - CH kW
Gas rate m³/h
Gas supply pressure mbar
CO
2
at maximum CH output % (±1%)
CO
2
at maximum DHW output % (±1%)
CO
2
at minimum output % (±1%)
CO
2
at medium output (ignition) % (±1%)
26.7
22.3
1.02
37
10.8
10.2
10.0
10.7
31.2
26.7
1.19
37
10.7
10.2
10
10.7
InTec² 25XE InTec² 28XE
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