Quick Installation Tips; Mechanical Installation - Grundfos ALPHA2 Instructions D'installation Et D'utilisation

4.1 Quick installation tips

1. To ensure proper air venting of your system,
place the pump 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 the pump 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. With zone panel control applications, when
there is a call for heat and power has been
sent to the pump, the pump will remember
and restart from the last duty point and
hydraulic mode.
6

4.2 Mechanical installation

When making pipe connections, follow the
piping manufacturer's recommendations and all
code requirements for the piping material.
• Flush the system of debris before
installation.
• Insert the check valve if required. See fig. 1.
• Refer to the arrows on the pump housing
indicating the direction of the liquid flow
through the pump.
• Install the pump with horizontal motor shaft.
See fig. 2.
• Fit the two gaskets supplied to the pump
ends.
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ADAPT
Fig. 1
Fig. 2
Check valve installation
Installation positions