You understood correctly yes, two separate loops spaced evenly across the 4' wide trenches. The reason for the 2 ton pump is a fellow near me has two water to air 2 ton pumps, still in they're boxes for sale for a very low price. The liquid side could easily be hooked into my loop as its sized the same then I'd only have to worry about fabricating the condenser side for the hot water. This loop is 3000' of 3/4" line. The small console pump on this loop now seems to have a pretty easy time keeping the shop warm enough, not sure if it could handle the hot water as well though. If the pump's too big I can start from scratch with a smaller one, just thought this might work out with a lot less labor...
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