Installation; Quick Install Tips; Mechanical Installation - Grundfos ALPHA Series Installation And Operating Instructions Manual

5. Installation

Warning
Do not energize pump until
properly installed.
Risk of electric shock - this pump
has not been investigated for use in
swimming pool or marine areas.

5.1 Quick install tips

1. To insure proper air venting of your system,
place Alpha in Fixed Speed III mode until all
air has been removed. Isolating zones during
this process will ensure proper air removal.
2. For balancing manifold zone(s) applications,
utilizing Constant Pressure mode 1 or 2 and
only one zone at a time during balancing will
ensure proper flow rate to each zone.
3. Always review your boiler minimum flow
rate requirements if utilizing Alpha as a
primary pump. Select one of the fixed
speed modes for boiler primary pump
applications.
4. In general, for maximum energy savings and
comfort level, start with the AUTO
mode.
5. You may change hydraulic selection while
pumping. No permanent damage will occur.
In fact, Grundfos encourages testing the
various hydraulic modes with your hydronic
system to ensure maximum energy savings
and comfort level.
6. Zone panel control applications - when there
is a call for heat and power has been sent to
the Alpha pump, the Alpha will remember
and restart from the last duty point and
hydraulic mode.
4

5.2 Mechanical installation

When making piping connections, be sure to
follow piping manufactures recommendations
and all code requirements for piping material.
• System should be properly flushed of debris
before pump installation.
• Insert check valve only if required, see fig. 2.
• Arrows on the pump housing indicate the
liquid flow direction through the pump.
• Install the pump with the motor shaft
horizontal; see fig. 3.
• Fit the two gaskets supplied to pump ends.
Fig. 2
™
ADAPT
Fig. 3
Check valve installation
Installation positions