Grundfos ALPHA2 Series - Technical Data and Installation Dimensions; Technical Data

English (GB)
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10. Technical data and installation dimensions
10.1 Technical data
To avoid condensation in the control box and stator, the liquid
temperature must always be higher than the ambient
temperature.
Supply voltage 1 x 230 V ± 10 %, 50/60 Hz, PE
Motor protection The pump requires no external motor protection.
Enclosure class IPX4D
Insulation class F
Relative humidity Maximum 95 % RH
System pressure Maximum 1.0 MPa, 10 bar, 102 m head
Inlet pressure
Liquid temperature Minimum inlet pressure
≤ 75 °C 0.005 MPa, 0.05 bar, 0.5 m head
90 °C 0.028 MPa, 0.28 bar, 2.8 m head
110 °C 0.108 MPa, 1.08 bar, 10.8 m head
EMC (electromagnetic
compatibility)
EMC Directive: 2004/108/EC.
Standards used: EN 55014-1:2006 and EN 55014-2:1997.
Sound pressure level The sound pressure level of the pump is lower than 43 dB(A).
Ambient temperature 0-40 °C
Temperature class TF110 to CEN 335-2-51
Surface temperature The maximum surface temperature will not exceed 125 °C.
Liquid temperature 2-110 °C
Power consumption in
manual summer mode
< 0.8 watt
Specific EEI values
ALPHAx XX-40: EEI ≤ 0.15
ALPHAx XX-50: EEI ≤ 0.16
ALPHAx XX-60: EEI ≤ 0.17
ALPHAx XX-80: EEI ≤ 0.18
ALPHAx XX-40 A: EEI ≤ 0.18
ALPHAx XX-60 A: EEI ≤ 0.20
Ambient
temperature
[°C]
Liquid temperature
Min.
[°C]
Max.
[°C]
02110
10 10 110
20 20 110
30 30 110
35 35 90
40 40 70
WARNING
Biological hazard
Death or serious personal injury.
- In domestic hot-water systems, we recommend
that you keep the liquid temperature below 65 °C
to eliminate the risk of lime precipitation. The
temperature of the pumped liquid must always be
above 50 °C due to the risk of legionella.
Recommended boiler temperature: 60 °C
If the temperature of the pumped liquid is lower than
the ambient temperature, make sure that the pump is
installed with the pump head and plug in position 6
o'clock.