Plumbing to the radiator inlet:
Radiator outlet:
Man, that was E-A-S-Y!
Now the plumbing to and from the 55 gal. barrel--has to be sealed for a closed loop:
The red handled ball valve is for priming the pump:
Into the barrel from the PCs:
And then back out of the barrel to the pump:
I originally put the pump on top of the barrel. It worked that way, but made priming it a real PITA! So, I dropped it down to the floor. Now I use the ball valve to prime the pump, and once the siphon is created--gravity helps feed it.
Time to finish up the main plumbing!
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