gtblum Posted October 13, 2008 Report Share Posted October 13, 2008 This is on the 2nd floor of a single family home in what was once an upper apartment Image Insert: 41.97 KB Quote Link to comment Share on other sites More sharing options...
Chad Fabry Posted October 13, 2008 Report Share Posted October 13, 2008 An expansion tank for an open to atmosphere boiler Quote Link to comment Share on other sites More sharing options...
Neal Lewis Posted October 13, 2008 Report Share Posted October 13, 2008 That is the expansion tank for a gravity hot water heating system. The glass gauge indicates the water level in the system. There may have been an overflow pipe for the tank going out the roof. The system could have been converted into a forced circulated type with the installation of a pump. If that's the case, the tank would no longer be needed; an expansion tank would be installed at the boiler. You can probably find some articles about gravity hot water systems at heatinghelp.com Quote Link to comment Share on other sites More sharing options...
gtblum Posted October 13, 2008 Author Report Share Posted October 13, 2008 Tanks guys. Quote Link to comment Share on other sites More sharing options...
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