Pump from external source to external system.
Loosen two nuts (5) and remove transfer hose (1) from EXTERNAL INPUT port 12 and external source.
Loosen two nuts (5) and remove transfer hose (1) from OUTLET port (3 and external system.
Ensure that all valves are closed before preforming step c.
Remove coupling sections (6 and 7) from Heater and transfer hoses (1)
Install two caps (4) on EXTERNAL INPUT port (2) and OUTLET port (3).
Drain transfer hoses (1) and return hoses to hose trough.