Pump Installation - Grundfos UP15 Installation & Operating Instruction

Table 2B – Inlet Pressure Requirements
Water (°F)
Required Inlet Pressure
In a pressurized system, the required inlet pressure is
the minimum allowable system pressure.
In an open system, the required inlet pressure is the
minimum distance the pump must be located below
the lowest possible water level of the water source
(tank, pool, etc.).

3. Pump installation

Position of terminal box:
Proper installation of the pump will have the terminal
box located to one side of the pump or the other, with
the conduit entry down. See Figure 3A.
Figure 3A
Recommended Terminal Box Orientation
If the terminal box position needs to be changed, it
is best to do so before installation. However, if the
pump is already installed, ensure that the line cord
is unplugged and close the isolation valves before
removing the Allen screws.
To change terminal box position:
1. Remove the four (4) Allen screws from the
pump housing and stator (4 or 5mm wrench)
while supporting the stator (motor).
2. Carefully separate the stator from the pump
housing and rotate it to the correct terminal
box orientation and reseat it.
3. Replace the Allen screws and tighten
diagonally and evenly (7 ft.-lb. torque).
4. Check that the motor shaft turns freely.
Remove the large screw in the middle of
the nameplate, insert a small flat blade
screwdriver into the end of the shaft, and turn
gently (see fig. 7a).
If the shaft does not turn easily, repeat the
disassembly/reassembly process.
190
(ft.) 5
(PSI) 2.2
165 140
4.5 3
1.9 1.3