Hello, I saw your post I live in Avenel NJ. I don't know where you live in NJ but I am a frequent helper on this board. MY number is 908247 7743, name is George. The two guys who posted pretty much said the correct things to do.
Hi George - thanks for your message. I am in Stockton in Hunterdon County. There seem to be some good guys willing to help on this board, it is much appreciated. I am cutting it close starting this boiler work now...going to be heating season soon. I just want to make sure my piping sizes and circs are going to be sized correctly. Need to order manifolds so I wanted to make sure my calculations were correct and a 1" manifold would be sufficient. Matt