Fig. 8. Circulator pump wiring.
PUMP OPERATION
WARNING
Pump Damage.
Do not start the pump until it has been filled with
water and the system has been purged of air.
7. Starting the pump
• Do not start the pump until it has been filled with water and
the system has been purged of air.
• Open the service valves on both sides of the pump to fill
the system with water. Check for leaks.
• Turn the air vent screw in the middle of the housing
counterclockwise until you hear air escape from the
system. Placing a rag under the vent holes will help collect
water.
HONEYWELL AQUAPUMP 3-SPEED CIRCULATION PUMPS
• Run the pump with the air vent open. Water will drip from
the air vent holes. Then, when all air is vented, close the air
N (NEUTRAL)
vent screw by screwing it clockwise back into place.
L (LINE, HOT)
GROUND
WARNING
Risk of scalding/burning
Depending on water temperature and pressure of
the system, hot vapor or liquid can escape if the
air vent screw is completely loosened.
Depending on water temperature and how long the
pump has been running, the pump can become
very hot.
M32875
8. Speed selection
• Turn the speed adjustment knob clockwise to increase the
speed (see Fig. 9).
• See Figs. 2-4 on page 2 for the flow curves of each pump
at the three different speeds.
• Select a speed to obtain proper flow needed for correct
system operation.
4
SERVICE
VALVES
Fig. 9. Bleed the circulator by loosening
the air vent screw.
SPEED
ADJUSTMENT
KNOB
AIR VENT
SCREW
M32876
62-0383EFS—05