Joe acquiost
New Member
I did not think much about this as I worked on the cover plate, etc. but, when I removed the tankless heater, the boiler water side was solid black.
The aquastat well and the temp/pressure gage I removed were also black on the water contact side. The interior of the boiler, water side, has a pretty even black coating. Soot black.
This did not bother me, at the time, thinking it was normal for a 20 year old (or so) unit, but now I am not sure, wondering if it indicates some problem. I worry now about a crack somewhere, but, if it has a crack, it should have shown water leakage some where, correct?
It's a Burnham V7.
The aquastat well and the temp/pressure gage I removed were also black on the water contact side. The interior of the boiler, water side, has a pretty even black coating. Soot black.
This did not bother me, at the time, thinking it was normal for a 20 year old (or so) unit, but now I am not sure, wondering if it indicates some problem. I worry now about a crack somewhere, but, if it has a crack, it should have shown water leakage some where, correct?
It's a Burnham V7.