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Old 12-16-2010, 09:12 PM   #1
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circulator pump..please help...it's cold here!


Thank you all in advance for your help. I have a question about installing a circulator pump for a hydronic boiler system. My pump is bad (bearing is shot). Anyway, I wanted to make sure I put the pump pumping the right direction. The arrows on my pump point down (like it's pumping into the boiler). I didn't think this was very common, but maybe my system is older? Its a Well-Mclain. My pump is on the left side of the boiler. The arrows on the Grundfos pump are pointing down. Anyway my question is are the arrows correctly indicating that my pump should be pumping down? Thank you so much for your time--it's cold here!

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Old 12-16-2010, 09:19 PM   #2
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circulator pump..please help...it's cold here!


you should have 2 pipes from your boiler, one supply and one return. Supply is the higher of the two and return lower. so..... on supply side arrow away from boiler...... on return side arrow towards boiler

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Old 12-17-2010, 07:03 AM   #3
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circulator pump..please help...it's cold here!


The pump arrows should be pointing toward the heater and that should be the return hot water side.

Sorry already mentioned in previous post.

Last edited by COLDIRON; 12-17-2010 at 07:05 AM. Reason: added text
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