I'm going on my third slant fin steam furnace in the last six years . The last 2 both cracked within 3 years . My installer has told me he has never had this happen before. Don't know why this is happening, but they want to install another slant fin . I am wondering if it's just going to happen again . Is this a common issue, or is there something that the installer may be missing ?
As Bob said your boiler supply piping in copper is one of your problems, the cast iron sections cant expand and contract with that rigid copper piping, you need to repipe in steel pipe with cast iron fittings using swing joints. I have seen over 4 of these copper piping posts just in the last year, where are these people getting there training and are they licensed.