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Figure 9 - Wires to Port "B" on HP9
7. Remove the heat pump's access panels.
8. Route the wires from the circulation pump
to the heat pump's electrical enclosure.
Figure 10 - Removing Blue
Connector From Port "B"
9. Connect the wire to the heat pump's control board (RS-485 Port "B") as
specified below. See Figure 9.
lThe blue connectors can be removed for ease in wiring and to properly
identify the correct port. See Figure 10.
lConnect the circulation pump wire "2" to the heat pump's "B" connection
point (Port "B").
lConnect the circulation pump wire "3" to the heat pump's "Y" connection
point (Port "B").
10. Turn on power to heat pump and circulation pump.
11. Configure heat pump to use circulation pump. See "Manually Configuring
the Heat Pump to use the Circulation Pump" on the facing page.
12. Confirm the heat pump is communicating with the circulation pump. No faults should display on the heat pump.
If the heat pump displays "CIRCULATION PUMP FAULT", then communication to the circulation pump
failed.
i. Confirm both devices are receiving power.
ii. Confirm circulation pump address is correctly entered in the heat pump's configuration.
iii. If fault continues to occur, turn off power to heat pump and circulation pump at breaker panel.
iv. Wait two (2) minutes for power to discharge from heat pump's capacitors.
v. Reverse the wires connected to the "B" and "Y" leads on the heat pump.
vi. Turn on power to both devices and confirm no faults occur.
vii. If a fault continues to occur, power off equipment and wait two (2) minutes. Then use a ground wire with a
100 ohm resistor at both ends of the wire. Run the wire from the heat pump's port C ("G") connection to the
circulation pump's ("COM") connection. Follow recommended RS-485 communication standards regarding
ground insertion resistors.
viii. Turn on power to both devices and confirm no faults occur. If a fault continues to occur, contact technical
support.
13. Turn off power to heat pump and circulation pump at breaker panel.
14. Wait two (2) minutes for power to discharge from heat pump's capacitors.
15. Replace access panels on heat pump and circulation pump.