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Posted by HeatPro on September 14, 2008 at 16:38:43:
In Reply to: boiler header sizing posted by geo on September 14, 2008 at 14:08:45:
Make it easy on yourself and continue to use the black pipe as directed in boiler installation manuals. The threaded joints allow expansion so as not to break soldered joints.
http://www.heatpro.us/steamtree/documents/C8A0FF11BCC91B7BEA7470B4AF66466D3C37D0A3.html
http://www.peerlessboilers.com/DesktopModules/Bring2mind/DMX/Download.aspx?EntryId=85&PortalId=0&DownloadMethod=attachment