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Old 08-29-18, 09:35 AM   #5
BillG
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Join Date: Jul 2016
Location: Minneapolis
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Drake, I'm with you. I think some of the responses were thinking you were talking about spacing between the pipes, but I think you were talking about the length of the run.

Shorter runs will give you a warmer temperature at the return, so should heat everything more uniformly and more quickly. Heck, if you piped it that way and poured the slab, then decided later that you wanted fewer, longer runs, you could series connect a couple of runs at the manifold location. You could probably even valve it such that you could switch on a whim.
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