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Posted by HeatPro on July 03, 2008 at 16:33:36:
In Reply to: BOILER PRESSURE posted by Bill on July 02, 2008 at 19:38:34:
If I have my expansion tank set at 8 psi and my cold water pressure in my boiler set at 12 psi, when the boiler heats up to 200 degrees what would be normal for the inside boiler pressure to go up to?
++ A purpose of an expansion tank is to allow the water to expand without dumping water through the relief valve. With a 30-lb relief valve, you don't want the pressure to rise higher than 15 psig.
And I see a bottle next to the boiler of a corrosion additive to put inside the boiler to keep it nice inside. What do you think of these additives? Thanks.
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