Mechanical Installation; Pump Positions; Control Box Positions - Grundfos ALPHA2 Series Installation And Operating Instructions Manual

3.1 Mechanical installation

3.1.1 Mounting the product
The arrows on the pump housing indicate the flow direction
through the pump. See fig. 1 (A).
1. Fit the two gaskets supplied with the pump when you mount
the pump in the pipe. See fig.
2. Install the pump with a horizontal motor shaft within ± 5 °. See
fig. 1 (C). See also section
3. Tighten the fittings.
Fig. 1 Mounting ALPHA2
4
1 (B).
3.2 Pump positions.

3.2 Pump positions

A
C
Fig. 2

Control box positions

Always install the pump with a horizontal motor shaft.
• Pump installed correctly in a vertical pipe. See fig.
• Pump installed correctly in a horizontal pipe. See fig.
• Do not install the pump with a vertical motor shaft. See fig.
(C and D).
3.3 Control box positions
3.3.1 Positioning of the control box in heating and domestic
hot-water systems
You can position the control box in position 3, 6 and 9 o'clock.
See fig. 3.
Fig. 3 Control box positions, heating and domestic hot-water
systems
B B
D
2 (A).
2 (B).
2