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Posted by HeatPro on May 25, 2006 at 15:01:22:
In Reply to: Re: copper tube boiler groaning/vibrating posted by Dave on May 25, 2006 at 14:19:31:
Use the boiler outlet valve. When you can get sure numbers out of thermometers, move the valve closed five degrees at a time while the noise is happening until the TD rises to 30F from boiler inlet to outlet. If there is a point where the sound changes or stops, note that TD. Stop at 30f TD, going over 30 TD isn't a good thing.
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