User Guide

Apply torque in even increments to both flange bolts until a
value of 96-132 in-lbs. is reached. Both the suction and dis-
charge flange bolts must be torqued in this manner.
Do not start pump until the system has been filled and vented.
Air should be vented from the system by means of an air vent
located at a high point in the system, or by an alternate
method. The system must be completely vented prior to
pump operation. Do not run pumps dry. Pump operation with-
out water circulation could result in pump and motor damage.
MODE OF DISCHARGE
The Series PL
™
pump can be installed to discharge up or
down, horizontally, left or right, but the motor shaft must
remain in the horizontal position, the arrow on the body must
point in the direction of flow and the conduit box must be
positioned on the top of the motor housing (see figure 2).
3
WARNING: HOT WATER HAZARD
When disassembling a gasketed joint, always use a
new gasket upon reassembly. NEVER RE-USE OLD GAS-
KETS. Failure to follow these instructions could result in
serious personal injury, death and/or property damage.
WARNING: WATER LEAKAGE HAZARD
To prevent leakage, make certain that the flange
bolts have been adequately torqued. Failure to follow these
instructions could result in serious personal injury and/or
property damage.
A. Loosen the screw securing the conduit box cover (wiring
compartment), and remove the screw & cover.
B. Attach the appropriate size connector to the hole on the
side of the conduit box.
C. Using a minimum size 14 AWG copper electrical wire (refer
to your local code for wiring restrictions), wire the motor to
a single phase power source as listed on the pump name-
plate. See Fig. 3.
D. Connect the ground wire to the inside of the conduit box
with one of the green screws provided inside the box. See
Fig. 4.
NOTE: Electrical supply and grounding wires must be suit-
able for at least 90°C (194°F).
NOTE: Series PL
™
Booster Pumps are thermally protected
and do not require external overload protection.
WIRING INSTRUCTIONS
SYSTEM PREPARATION
Prior to pump start up, closed heating and cooling systems
should be cleaned, drained and refilled with clean water.
System ph must be maintained between 7 and 9.
STARTUP
WARNING: ELECTRICAL SHOCK HAZARD
Disconnect and lockout the power before making
electrical connections. Failure to follow these instructions
could result in serious personal injury or death.
WARNING: ELECTRICAL SHOCK HAZARD
Be certain that all connections are secure and the
conduit box cover is closed before electrical power is con-
nected. Failure to follow these instructions could result in
serious personal injury, death and/or property damage.
FIG. 2
FIG. 3
PUMP BODY MAY BE ROTATED AS SHOWN,
BUT CONDUIT BOX MUST REMAIN AT TOP.
CAUTION: SEAL DAMAGE HAZARD
Do not run pump dry, seal damage may occur. Failure
to follow these instructions could result in property damage
and/or moderate personal injury.
TYPICAL WIRING INSTALLATION SCHEMATIC
FOR 1Ø POWER SOURCE
FUSIBLE DISCONNECT
OR CIRCUIT BREAKER
BY OTHERS
PUMP MOTOR
THERMALLY
PROTECTED
TO REMOTE
CONTROL
IF REQUIRED
WARNING: HOT WATER LEAKAGE HAZARD
Pressurize the body slowly while checking for leaks
at all joints with gaskets. Failure to follow these instructions
could result in serious personal injury and/or property
damage.
WARNING: HOT WATER HAZARD
Make sure that each flange gasket remains seated in
the flange groove during and after installation. Failure to fol-
low these instructions could result in serious personal
injury, death and/or property damage.
FIG. 4
CONDUIT BOX WIRING DETAIL
ALTERNATE
GROUND SCREW
GREEN
GROUND
SCREW
LINE
LEADS