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Posted by Dave on June 13, 2006 at 19:44:15:
I just thought I'd give you an update on my system....
I had the copper tube boiler that had been rumbling with inlet pressure needle oscillating like crazy. Someone who had heard of this problem in Colorado gave me the name of a company Chemical Specialties (in Colorado) that makes a chelating agent (CST-50). I put the recommended amount into my system, and it is completely silent. Also, needle on pressure gauge is rock-steady. Have you ever heard of this being an issue with the glycol? I am so happy it is silent again.
Have a great week.
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