13
FLOW CENTER INSTALLATION AND LOOP FLUSHING MANUAL
Flushing & Charging (cont.)
Figure 10a: FPT Style
Figure 10b: GL Style
HEAT PUMP
CONNECTIONS
GROUND LOOP
CONNECTIONS
Valve Positioning
To Flush Loop Only
Connect loop to fl ow center.
Connect the unit side connections of the fl ow center together with a jumper.
Remove caps from fl ow center access ports.
Connect fl ush cart hoses to access ports.
Position valve stems as shown below.
Proceed with steps 4 through 8 on page 12.
Rotate the fl ow center valves to isolate the fl ush cart from the rest of the system.
Turn off fl ush cart pump, relieve the pressure on the hoses, and remove them.
Replace caps in access ports.
Remove jumper between unit connections.
Note:
If antifreeze is to be added to the loop, follow procedure listed previously (page 11).
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