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Posted by HeatPro on September 12, 2008 at 10:21:06:
In Reply to: building presure posted by greg large on September 12, 2008 at 08:57:58:
Your pipe isn't the problem. The location of the autofill to the expansion tank, and/or the expansion tank size itself might be the problem.
Check the locations to this drawing:
And check the filling method:
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