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Posted by HeatPro on January 05, 2005 at 17:02:27:
In Reply to: Radiator Hissing posted by Sandy on January 04, 2005 at 12:33:54:
The fellows who replaced your boiler probably didn't follow the first 'Rule of thumb' which is:
"For every half-mile that your top-most one-pipe steam radiator is above the boiler, increase the boiler pressure 1 psig."
They might have to lower the pressure regulator back down to 2 psig if it is a one-pipe system.
http://64.226.150.132/hydronic/steam/steam1.htm