hello all. need info on a peerless cast iron oil boiler with becket burner. one pipe steam system. cat# ions on wbv-04-150-s ser# 376145-200100. 1.5 gal/hr lt.oil. doe htg capacity or gross output btu/hr 178000 water, 177000 steam. 554 sq ft steam. 133000 btu/hr steam, 155000 btu/hr water. this is the label info. can anyone explain? also, i want to convert to gas. any suggest on a gas burners for this boiler? would it drop the effieciency? any info is appreciated.