Hello. I just want to make sure I'm doing things right so I want to ask. How can I remove a radiator without stopping the system? In the right hand side there is a valve with plastic cover connected with wire to a Trv valve. The wheel valve and trv are off and the radiator is cold but I touched the pipe next to the Trv and I felt movement of water. So how can I stop it to remove the radiator?
Thank you.