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New condensing boiler to old piping
Hoping you can help me with this question. I have been forward a question related to an old forced hot water system, with the boiler recently replaced with a new condensing boiler. My (and their) question: how is the old larger piping affected by the smaller copper pipe feed in the photo? Does it make any difference once the system is charged with water? Small to large...does this create potential air issues? Are there any ramifications or other things I should be looking at/for with this marriage between old and new? So many questions! I realize this is a small snapshot to go by, but any specific or general thoughts would be welcome and greatly appreciated.