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what to do with this odd boiler vent setup redirecting the vent into the old chimney?

Jells · 2026-06-30 00:25:29

This is how it was set up when decades ago we bought this building that was once heated with coal fired stoves and grates. For the boiler in the basement heating the ground floor they built a terra cotta lined cinderblock chimney outside the wall and then connected it to the original 4 flue chimney. Is this legal? Was it…

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ChrisJ Posts: 17,645

August 27

https://forum.heatinghelp.com/discussion/comment/1902726#Comment_1902726

I thought MA also makes you put a heat switch of some type over a boiler to shut it down as well?

Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.
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what to do with this odd boiler vent setup redirecting the vent into the old chimney?

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