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Re: pressure setting

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Posted by jack on December 05, 2008 at 09:31:10:

In Reply to: Re: pressure setting posted by HeatPro on December 04, 2008 at 23:15:53:

: : 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.

: http://www.heatpro.us/steamtree/index.html

: 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."

Would it be the same for a 2 pipe system? I'm currently setting it a main 1.5 and diff .5 but the boiler seems to be doing alot of short cycle to reach the temperature. Is that normal or should I adjust the #'s? Thanks.

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