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Posted by rbeck on November 18, 2008 at 22:17:02:
In Reply to: Re: Shutting Off 50% of home's Radiators- Should I Reduce Size of Nozzle? posted by Mark on November 18, 2008 at 22:12:51:
By code you cannot reduce by more than 20%. The boiler may condense due to the amount of fireside heating surface and too low of input.