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Posted by HeatPro on October 31, 2009 at 18:32:55:
In Reply to: Removing section of cast iron boiler to lower BTU output posted by MattinNH on October 31, 2009 at 16:10:57:
Don't bother. Use the smaller nozzle for the 147 making sure that the burner plates are the right size for the lower input.