About 6 months ago i fitted a new radiator in our lounge and took the supply from the radiator in the room above using 15mm copper pipes with and a 'T' junction. This worked fine. In a more recent project i had to slightly reposition the radiator above which involved a series of right angle bends to fit and as i had the rad off the wall, i decided to change the broken TRV and rad valve. The existing rad still works fine but the new one doesnt work at all.
Ive got a back boiler with a tank in the loft which i drained down to change the rad so i asked a plumber who said he thought it was an air lock and to turn all of the other rads in the house off except the one in the lounge. i did this and it didnt work. anoather method i tried was to bleed the downstairs rad and took water out or the rad. the rad slowly became warm but when i stopped manually drawing water through, this was not maintained.
any suggestions?
one thing i missed off the diagram was the isolation valves i put on the horizontal pipes leading from the existing rad. dont know if it makes any difference
Ive got a back boiler with a tank in the loft which i drained down to change the rad so i asked a plumber who said he thought it was an air lock and to turn all of the other rads in the house off except the one in the lounge. i did this and it didnt work. anoather method i tried was to bleed the downstairs rad and took water out or the rad. the rad slowly became warm but when i stopped manually drawing water through, this was not maintained.
any suggestions?
one thing i missed off the diagram was the isolation valves i put on the horizontal pipes leading from the existing rad. dont know if it makes any difference
