3. Installation
3.1 Position of the terminal box
Proper installation of the pump has the terminal
box located to one side of the pump or the other,
with the conduit entry down.
TM055563
Recommended terminal box orientation
3.2 How to change the terminal box
position
WARNING
Electric shock
Death or serious personal injury
‐ If the terminal box position needs to
be changed, ensure that the power
supply is turned off and close the
isolating valves before removing
the hex socket head screws.
How to change terminal box position:
1. Remove the four (4) hex socket head screws
(4 or 5 mm wrench) while supporting the stator
(motor).
2. Carefully separate the stator from the pump
housing, and rotate it to the correct terminal
box orientation.
3. Replace the hex socket head screws, and
tighten diagonally and evenly (7 ft.-lb.torque).
4. Check that the impeller turns freely. If the
impeller does not turn easily, repeat the
disassembly/reassembly process.
3.2.1
Pump mounting: for indoor use
When making pipe connections, follow the pipe
manufacturer's recommendations and all code
requirements for pipe material.
Arrows on the side or bottom of the pump housing
indicate direction of flow through the pump.
Grundfos circulator pumps can be installed in both
vertical and horizontal lines. The pump must be
installed with the motor shaft positioned
horizontally.
Under no circumstances should the pump be
installed with the shaft vertical or where the shaft
falls below the horizontal plane.
TM055564
Acceptable Not acceptable
Acceptable pump mounting positions
We recommend installing the isolating valves on
each side of the pump. If possible, do not install
elbows, branch tees, and similar fittings just
before or after the pump. Provide support to the
pump or adjacent plumbing to reduce thermal and
mechanical stress on the pump.
7
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