Hi Rico,
Thanks for fast response. The TRV is at the top and the tappings are top and bottom on opposite ends so I think I will continue with my original preference.
Had a feeling that it wasn't going to be overly important.
This whole project is an upgrade from the previous single pipe...
Currently re-plumbing house and wish to know if there is any preference for a fully pumped system to have flow entering at the bottom or top of a radiator with the return from the top or bottom respectively.
My preference was for flow at bottom with return at top through bi-directional...