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Posted by HeatPro on February 16, 2009 at 12:46:56:
In Reply to: System 2000 not heating like the old boiler posted by Mike on February 16, 2009 at 12:05:35:
As the water coming and going is over 180F, the boiler is doing its job. Look to places where the water isn't being used in the baseboards, bypassing circuits, or other changes in the house. Each circuit to and from the baseboards should have less than a 30f difference from supply to return; if more, then there is insufficient flow in that circuit which would explain the 'low-grade' heat from the baseboard. It could be air in the lines.