H
hotchocolate
Hi all, PLEASE HELP.... Pretty simple I'm guessing but it's got me stuck anyway. I have a gas boiler which heats the water for the radiotors and also for the hot water and shower, on seperate circuits. It all works fine, gas comes in, heats the water, exhaust gases leave again, water gets hot. In fact it works a treat, but I have a problem with the pipes banging, I have five radiators in five different rooms and the water passes through them in turn or just bypasses them if they are closed, but the first and third radiotors in the loop sometimes start to bang. It's sporadic and probably takes place for about five minutes every couple of hours. It only seems to be the first and third radiators and if I change the valve setting on the radiators it seems to be ok but then starts again in the new position at a later point in time. I know this is usually trapped air but I have bled all of the radiators and only water was ever purged, no air ever came out at all, plus the radiators get hot right to the top. Could it be the pipe diamater? Could the pipes be too thin? I estimate they are around 12mm diameter for a 80m2 appartment, if so is there anything I can do rather than have the pipes replaced? The pressure when around 65 degrees is 3 bar, Is this too high? Thanks for any help, Daniel.
