Hello all. I have three radiators on my first floor. New house. Yay. But now that it is getting cold in Chicago and we are turning the system on, I am noticing the TRVs hammering when they try to close.
I'm fairly certain they were installed in reverse. Can someone direct me to a how-to for flipping them? I can take the head off no problem but can't seem to find instructions for flipping them.
There is no way to correct for this without repiping, in other words, reversing the direction of the valve. Sometimes an incorrectly installed valve is simply left in place but in the full open positon and a new and correctly piped valve is installed on the opposite (actual supply) side of the radiator. You may also be able to reverse the supply and return risers feeding the radiator, but this is not always possible.