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Posted by pete on September 15, 2006 at 15:02:36:
In Reply to: Re: Boiler...shake posted by HeatPro on September 15, 2006 at 12:41:57:
It was worse with one zone, but still a little with multiple open.
I have a pressure reducing valve between supply and system that is set at 12 lbs (had no fast fill option), so not sure how to increase pressure.
What will the harm be if nothing is done?