Welcome! Here are the website rules, as well as some tips for using this forum.
If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Hydronic boiler system won't circulate
I have a single zone system in a house that suffered a freeze up and sat vacant for years. I repaired every break in the house plumbing and most all of the ancillary stuff on the boiler (circulator pump, purge valve, etc). The boiler fires up and I have domestic hot water, however, I either can't get the system bled of air properly, or something is preventing the system from circulating hot water. It seems strangely plumbed to me, and I am thinking about cutting in a ball valve and spigot just above the circulator to ease in bleeding the system. I have bled air out of both the two radiators that have bleeder screws, as well as two spigots on the return, located just upstream of a 'thrush balancer' about 12 feet from the boiler. This one's got me confused. Pics coming and thanks in advance for any help!