7
(
Q
J
OLV
K
8
6
4.1.2 Mounting positions
The arrows on the pump housing indicate the
direction of water flow. The pump may be
installed in vertical or horizontal piping, but the
motor shaft must always remain
horizontal, as shown in fig. 1.
Fig. 1
Installation positions
4.1.3 Terminal box position
At the bottom of the stator, closest to the pump
housing, there are three drain holes to allow
condensed water to escape. The drain holes
shall not be blocked for any reason and one
drain hole must always point downward.
There is not a drain hole directly below the
terminal box; therefore the terminal box must be
positioned in one of the positions shown in fig. 1
or fig. 2.
4.2 Changing the terminal box
position
If the pump is already installed in the system,
the system must be drained or the isolation
valves on both sides of the pump must be closed
and the pressure released/relieved by removing
the vent plug.
Only after the pressure has been relieved and
the pump drained should you proceed with the
next steps.
4.2.1 Rotating the terminal box
To change the position of the terminal box,
follow these steps:
1. Remove the four (5 mm) allen-head screws
holding the pump head onto the pump
housing.
2. Carefully lift/slide the pump head out and
away from the pump housing. Next rotate the
pump head and locate the terminal box in the
desired position. The terminal box can be
rotated in steps of 90 °. Review
fig. 1 and fig. 2 for possible/permissible
positions. DO NOT locate the terminal box
beneath the pump.
3. Make sure the O-ring is properly seated in
the pump housing.
4. Replace the pump head onto the pump
housing.
5. Diagonally tighten the 5mm allen-head
screws evenly.
Torque to: 7 ft lbs. / 9.5 Nm.
6. Check to ensure the rotor turns freely. Do
this by removing the vent plug in the
middle of the pump nameplate. Insert a
medium-size, flat-blade screwdriver into the
slot at the exposed end of the shaft. Gently
turn the shaft. If it does not turn easily,
repeat steps 1 through 5 above.
If the rotor spins freely, proceed to step 7. Do
not put the vent plug back into the pump until
the end of step 9.
7. The position of the nameplate can be
changed by easing the outer edge of the
plate at the cutout with a screwdriver.
Turn the nameplate to the required position
and push into place.
8. Follow electrical instructions in section 3.3.
9. Refill the system, open the isolation valves
and vent the system. Also allow air to vent
out of the pump; once water flows out the
vent hole, replace the vent plug removed in
step 6. See additional instructions in
section 4.1.
10. Fig. 2 shows acceptable terminal box
positions along with recommended drip
loops (dashed lines) in the electrical wiring
harness based on entry point.
TM
04
56
46
36
09
Warning!
Before starting any work on this
circulator, be sure electrical
supply has been switched off
and it cannot be accidentally
switched on.
&DXWLRQ
Caution!
Exercise caution when draining
the system or removing the vent
plug as the fluid in the system may
be scalding hot and under
pressure.
&
&DXWLRQ
Caution!
Use caution as the rotor
assembly can fall out of the pump
head or pump housing if the pump
head is pulled too far away from
the pump housing.
