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Posted by dcriner on February 24, 2010 at 20:30:41:
In Reply to: boiler drain posted by John on February 23, 2010 at 14:55:18:
Can you link us to a photo that shows what you are referring to?
Is this a hot-water boiler? Don't drain it to remove rust. That will require more make-up water, with entrained air/oxygen, which will just cause more corrosion. Draining to eliminate rust is a never-ending process. A sealed hot-water system should only produce harmless black water when drained. Do you have an appropriate air-removal device, and is it working?
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