D
DWPlumb
Hi Guys
A customer called me out this week after having just turned on their CH, usual story rads not too hot. I've bled them and released a lot of air which did the trick, but not for long. The pump is working fine, The rads nearest the HW cylinder are constantly hot but as i follow them down the line the heat tails off considerably. The F & R pipes into the boiler (stove) and HW cylinder are nice and hot. I have removed offending rads cleaned them out and in a couple of cases changed the TRV's and valves where they have been crudded up. When I open the valves with no rad I get lovely hot water but when I replace them it is though there is no flow through them at all. Any ideas, power flush perhaps? There is no air that I can find in the system and as far as I am aware the valves have not been fiddled with from the previous year.
Cheers Dave
A customer called me out this week after having just turned on their CH, usual story rads not too hot. I've bled them and released a lot of air which did the trick, but not for long. The pump is working fine, The rads nearest the HW cylinder are constantly hot but as i follow them down the line the heat tails off considerably. The F & R pipes into the boiler (stove) and HW cylinder are nice and hot. I have removed offending rads cleaned them out and in a couple of cases changed the TRV's and valves where they have been crudded up. When I open the valves with no rad I get lovely hot water but when I replace them it is though there is no flow through them at all. Any ideas, power flush perhaps? There is no air that I can find in the system and as far as I am aware the valves have not been fiddled with from the previous year.
Cheers Dave