Grundfos alpha2 l User Manual

English (GB)
6
4. Applications
4.1 System types
Fig. 3 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.
4.2 Pumped liquids
Clean, thin, non-aggressive and non-explosive liquids, not
containing solid particles, fibres or mineral oil. See fig. 3.
In heating systems, the water should meet the requirements of
accepted standards on water quality in heating systems, for
example the German standard VDI 2035.
4.3 System pressure
Maximum 1.0 MPa (10 bar). See fig. 3.
4.4 Relative air humidity (RH)
Maximum 95 %. See fig. 3.
4.5 Enclosure class
IP42. See fig. 3.
4.6 Inlet pressure
Minimum inlet pressure in relation to liquid temperature.
See fig. 3.
TM05 8562 2413
Warning
The pump must not be used for the transfer of
flammable liquids such as diesel oil, petrol and
similar liquids.
Liquid
temperature
Minimum inlet pressure
[MPa] [bar]
≤ 75 °C 0.005 0.05
90 °C 0.028 0.28
110 °C 0.108 1.08

Grundfos alpha2 l Specifications

General

Pump Type	Circulator Pump
Series	ALPHA2 L
Max Head	6 m
Voltage	230 V
Frequency	50/60 Hz
Temperature Range	2°C to 110°C
Material	Cast iron
Max Operating Pressure	10 bar
Installation Length	180 mm
Enclosure Class	IP42
Insulation Class	F
Weight	2.1 kg
Protection Class	Class I