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Ultra Oil multi temp piping

I have been tasked with correcting a job that someone else has done.  What I have I a Weil-Mclain Ultra Oil boiler.  It is piped with a supply and return manifold.  It has several hi temp zones and several radiant zones.  What I do not know is can an UltraOil boiler be piped with primary and secondary loops and work efficiently or is there a better suggestion.  The reason for this job is the radiant part is piped incorrectly, looks messy and the customer wants it moved. 

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