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Posted by jim on September 14, 2006 at 14:05:44:
I'm a little confused on how to pipe a replacement boiler. am replacing weil-mclain eg50 with same unit. the original piping had two supply lines going directly to respective zones. I am planning on installing the proper riser and header and equalizer. The recomendations from wm call for using only one supply line to the riser. is this correct? Should i use both with a drop header? also they call for a 2and a half inch riser. Is that also correct?