Grundfos alpha2l User Manual

17
8.3 Automatic bypass valve (thermostatically controlled)
Follow this procedure:
1. Adjust the bypass valve with the pump in setting I (speed I).
The minimum flow (Q
min.
) for the system must always be observed.
Consult the manufacturer's instructions.
2. When the bypass valve has been adjusted, set the pump to the lowest
or highest constant-pressure curve.
Explanation to pump settings in relation to performance curves, see
10. Pump settings and pump performance.

Grundfos alpha2l Specifications

General

Voltage	230 V
Protection Class	IP42
Maximum Operating Pressure	10 bar
Enclosure Class	IP42
Insulation Class	F
Pump Housing	Cast iron
Type	Circulator pump
Frequency	50 Hz
Approvals	CE
Connection	G 1"
Ambient Temperature	Up to 40°C