Grundfos alpha2l - Applications of the GRUNDFOS ALPHA2 L

6
3. Applications
Contents:
3.1 System types
3.2 Pumped liquids
3.3 System pressure
3.4 Relative air humidity (RH)
3.5 Enclosure class
3.6 Inlet pressure.
3.1 System types
Fig. 2 Pumped liquids and operating conditions
GRUNDFOS ALPHA2 L is suitable for
• systems with constant or variable flows where it is desirable to
optimise the setting of the pump duty point
• systems with variable flow-pipe temperature.
3.2 Pumped liquids
Clean, thin, non-aggressive and non-explosive liquids, not containing
solid particles, fibres or mineral oil. See fig. 2.
In heating systems, the water should meet the requirements of accepted
standards on water quality in heating systems, e.g. the German standard
VDI 2035.
TM05 1923 4512
Max. 1.0 MPa (10 bar)
75 °C
Min.
0.005 MPa
0.05 bar
90 °C 110 °C
Min.
0.028 MPa
0.28 bar
Min.
0.108 MPa
1.08 bar
Max. 95% RH
IP 42
0.0 0.4 0.8 1.2 1.6 2.0 2.4
Q [m³/h]
0
2
4
6
[m]
H
0
20
40
60
[kPa]
p
0.0 0.2 0.4 0.6
Q [l/s]
ALPHA2L XX-50
ALPHA2L XX-40 / ALPHA2L XX-45
ALPHA2L XX-60
2
2
PHA2
2
2
2
2
P
HA2
P
HA2
AL
A
AL
AL
ALPHA2 L
2
PHA2
2
2
P
HA2
P
HA2
ALAL
AL
ALPHA2 L
Warning
The pump must not be used for the transfer of flammable liquids
such as diesel oil, petrol and similar liquids.