Bell & Gossett P86101D Series LR Circulators - Manual (Page 4)

LINE
LEADS
GREEN
GROUND
SCREW
ALTERNATE
GROUND SCREW
FIG. 4
CONDUIT BOX WIRING DETAIL
1 L 7 N
SYSTEM PREPARATION
Prior to pump start-up, closed heating and cooling systems
should be cleaned, drained, and refilled with clean water. The
system fluid pH must be maintained between 7 and 9.
START-UP
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. The system must be
completely vented prior to pump operation. Do not run Series
LR Circulators dry. Pump operation without water circulation
could result in pump and motor damage.
PERIODIC INSPECTION
Bell & Gossett Series LR Circulators are designed to provide
years of trouble free service. It is recommended that periodic
inspections be made to check for potential problems with the
pump. If any leakage or evidence of leakage is present, repair
or replace the unit.
WARNING: HOT WATER LEAKAGE HAZARD
Pressurize the body slowly while checking for leaks at
all joints with gaskets or solder connections. Failure to follow
these instructions could result in serious personal injury
and/or property damage.
WIRING INSTRUCTIONS
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 in the side
of the conduit box.
C. Using a minimum size of 14 AWG copper electrical wire
(refer to your local code for wiring restrictions), wire the
motor to a single phase power source that matches the
electrical rating on the pump nameplate. See Fig. 3. Use
the size of electrical wire as dictated by local code.
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 LR Circulators are impedance protected and
do not require external overload protection.
WARNING: ELECTRICAL SHOCK HAZARD
Be certain that all connections are secure and the
conduit box cover is closed before electrical power is
connected. Failure to follow these instructions could result
in serious personal injury, death and/or property damage.
WARNING: ELECTRICAL SHOCK HAZARD
Disconnect and lock out the power before making
electrical connections. Failure to follow these instructions
could result in serious personal injury or death.
S
PUMP
MOTOR
L N
PUMP MOTOR
IMPEDANCE
PROTECTED
FUSIBLE DISCONNECT
OR CIRCUIT BREAKER BY
OTHERS
TYPICAL WIRING INSTALLATION SCHEMATIC
1Ø POWER SOURCE
TO REMOTE
CONTROL
IF REQUIRED
FIG. 3
Xylem Inc.
8200 N. Austin Avenue
Morton Grove, Illinois 60053
Phone: (847) 966-3700
Fax: (847) 965-8379
www.xyleminc.com/brands/bellgossett
Bell & Gossett is a trademark of Xylem Inc. or one of its subsidiaries.
© 2012 Xylem Inc. P86101D May 2012