Craig
New Member
We bought a house last year with the original 1920s boiler. The boiler works great. I am looking for information on it. There is no pump and it has the old expansion tank in the ceiling. I was wondering how much pressure should be in the system? I doubt the pressure gauge is correct but in the dead of winter with it cycling, the pressure does sit right at 12psi according to the gauge. The boiler does have to run awhile for the hot water to make it upstairs. I think its normal but others I have talked to don't think its normal. Also I know nothing about the old expansion tanks on whether its working correct or not. Any help would be appreciated.
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