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Posted by HeatPro on December 04, 2008 at 23:15:53:
In Reply to: pressure setting posted by jack on December 04, 2008 at 21:54:16:
: Hi, I have a 245,000 btu Burnham gas steam boiler. I would like to find out what settings(main, diff)it should have to run a 4 family house at 68 degrees. Thanks.
++ The settings would be the same for any house with a one-pipe system, as they are all designed at about a pressure of 1 psig. The vents are damaged over 4 psig. So people set the pressure to go up and down around 1 psig if they can. The pressure controls aren't sensitive so most settle for 2.5 psig and 1 pound differential.
One pound of pressure will drive steam up hot pipes 2/3 of a mile. So the rule-of-thumb for those who like such short-cuts is:
"For every half-mile that your top-most one-pipe steam radiator is above the boiler, increase the boiler pressure 1 psig."
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