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Plumbing / Supplying Top of Heat Exchanger

« on: January 25, 2016, 10:14:55 AM »

It’s my first year running and I seen the other day that I should attach supply to the bottom of the heat exchanger and return on the top.   I plumped both the heat exchanger in my garage and my house with the supply on the top and return on the bottom.  I was think it would be easier on the pump and that’s why I did it that way.  Could someone tell my why and any issues I might have with running this way?