In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Due to Sandy flooding I had to have a licensed plumber replace my boiler (submerged). It was hammering severely and I had this plumber come back. He redid the piping around the burner and the hammering went away. However, the new boiler bounces several inches in the sight glass and then drains to the point that the LWC kicks in. The burner shuts down for about a minute and once the water level rises it kicks back in. I had another licensed plumber in to do some gas work and he claims this is due to the near boiler piping and would be $1800 to correct or get the guy who did it to come back again. He said the issues he saw were the Mfr states the riser should be 2.5 inches plumber used 2 inches. Pipe used for riser is galvanized and then copper to the header. Condensate return was incorrect, it should be below the waterline which is 23 13/16 inches. I am just a homeowner and agree it does not look like the illustration. It is a williamson gsa125. I have attached some photos and the mfr piping page. Any guidance is appreciated.