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10. Technical data
To avoid condensation in the stator, the liquid temperature must
always be higher than the ambient temperature.
Operating conditions
Sound pressure level The sound pressure level of the pump is lower than 43 dB(A).
Relative humidity Maximum 95 %, non-condensing environment
System pressure PN 10: Maximum 1.0 MPa (10 bar)
Inlet pressure
Liquid temperature Minimum inlet pressure
75 °C 0.005 MPa (0.05 bar), 0.5 m head
95 °C 0.05 MPa (0.5 bar), 5 m head
Ambient temperature 0-55 °C
Liquid temperature 2-95 °C
Liquid Maximum water/propylene glycol mixture is 50 %
Viscosity Maximum 10 mm
2
/s
Minimum switching time power on/off No specific requirements.
Maximum altitude of installation 2000 m above sea level
Electrical data
Supply voltage 1 x 230 V - 15 %/+ 10 %, 50/60 Hz, PE
Insulation class F
Standby power consumption < 0.3 W
Miscellaneous data
Motor protection The pump requires no external motor protection.
Enclosure class IPX4D
Temperature class (TF) TF95
Specific EEI values
ALPHA1 L XX-40: EEI ≤ 0.20
ALPHA1 L XX-60: EEI ≤ 0.20
ALPHA1 L XX-65: EEI ≤ 0.20
In domestic hot-water systems, we recommend that
you keep the liquid temperature below 65 °C to
eliminate the risk of lime precipitation.
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