Okay my boiler experience is limited to installation of commercial units (AO Smith) for domestic hot water in multifamily apartments.
I am now in the midwest (gets cold here..) and have a request to hook up an outdoor wood boiler. They are replacing their older unit with a newer more efficient unit.
I have no experience with closed system hydronic heating.
They are using the system with a heat exchanger in their furnace, no radiant, baseboard or other components.
The manufacture recommends black iron pipe at the boiler tank connections, with transition to Pex.
I know these closed systems don't have constant new minerals and O2 so rust/corrosion is not a problem....but I am having a hard time convincing my self to go ahead with black pipe and water:nono:
Also they show no T & P on their boiler, and no expansion tank. I have checked other manufacturers and get the same info.
Any insight or experience on these would be appreciated.
Scroll down to installation kit list (black iron ftgs.)