3rd floor radiator
I recently added a 3rd floor baseboard hot water radiator in our attic. The boiler is in the basement and has a circulator pump attached. Every radiator in our house has both a supply and return running to it.
Problem is the attic radiator never heats up. If I open the bleeder valve, I get water. If I leave it open long enough I get hot water. However, the water never circulates to the radiator.
Any ideas on how to fix?