I am replacing 2 smaller single panel radiators with a double panel, for some reason they installed two small radiators in a not very big room, two plumbers have already recommended replacing them with one to increase the efficiency of the gravty fed heating.
When I opened the packet I noticed that there are only two threaded holes where the air bleed and blanking plugs go, where the inlet and outlet plugs should go there are steel inserts very firmly fixed. According to the enclosed instructions, there should be four holes with plastic plugs.
SIlly question, but how do you get the water in and out and the air out if there are only two threaded holes?