Hi.
Silly question time. Enjoy your laughs! :)
I am adding a 22 mm pipe run along the back wall which will feed 2 rads and a towel rail. Should I join the feed and return pipes at the end of the run (making it into the proverbial loop) or make going through a rad the only way back for the water?
If I join the ends, I assume the path of least resistance will mean the water won't be keen to run through the rads at all, just keep going round the loop. But if there is no loop what happens if all the TRV's are closed and there is no return route? Is this accounted for in boiler design so it just stops?
I think that not joining is the correct answer, but I want to be sure before I finalise the pipework, so answers on a postcard please.
Thanks.