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New Boiler install noises
Due to flooding from Sandy, I had to purchase a new williamson boiler. GSA150 Gas Steam one pipe. I previously had a gsa125 but due to a boiler shortage after the storm, I had to up size one size because that was all that was available. I have 275 ft of connected radiator load. and my new boiler provides 376su ft and my old one 325sq ft. Since my new install there seems to be some knocking or pinging and ticking on start up and when the system starts steaming up even though the pipes are warm. Also when the system shuts down, im hearing sporadic knocks and pings for 5-10 minutes?. they are not load bangs but annoying and new since the new boiler. I believe all of the near boiler piping to be good. ( will post pics)
1. I previously had insulation and havent replaced yet. could this be the problem?(i have to clean the salt off of the pipes first)
2. Could the larger boiler cause the steam to be too much for my uninsulated pipes to be able to handle?
3. If I use two takeoffs instead of the one im using, even though the manual says its ok, will i slow down the steam and maybe stop some of the noises?
4. Maybe a 3" header or drop rather that 2.5" which the manual says is ok?
3. the gsa 125 and 150 are exacly the same except for the manifold. If i change the gsa150 which has 6 burners and replace it with the 5 burner manifold, would i basically be make my 150 btu a 125 btu?
Thanks in adavance. Pictures to be loaded tomorrow