I just installed a Runtal baseboard radiator in my bathroom as a replacement for an old cast iron unit. I have bled the unit and have water coming out of the radiator, but it is cold water. The other radiators are warming just fine.
Several years agao I took out the radiator during a bathroom remodel and replaced about 20 feet of supply and return line in the process. They have been stubbed up through the floor and capped until now.
Any thoughts or suggestions?