I live in a 10 yo 4 bed detached house, I've lived here 3 years. All the central heating pipes are 10mm plastic, it is a gravity fed system. the boiler is downstairs in the garage. All rads have TRVs bar one, in the hall by the stat.
When we have decorated the house, in turn each radiator has been replaced for an equivalent sized Barlo round top. There are only 3 original radiators left out of a total of 16. Each year at around about this time before the heating is switched on again I bleed the system and then turn on heating. Most of my downstairs rads are luke warm at the bottom and hot at the top. The system has been cleaned once whilst i've lived here.
It is not all the radiators, so i turn off all the hot ones and leave the problem ones on and after a short time they get hot too. I have tried removing the TRVs and pressing the little tit on the v/v but i cannot seem to get all 16 totally hot together.
I have read about sludge but I can't see it being this because they do get hot when the load is reduced, at the moment i have 1 radiator off the wall and the valves shut off due to decorating, there is no circuit through these pipes. I think this will give me performance issues but it is the same each year when all 16 are operational? Any advice would be gratefully received. Could it be an undersized pump maybe? it's a wilo gold 50 on setting 3 at the moment.
When we have decorated the house, in turn each radiator has been replaced for an equivalent sized Barlo round top. There are only 3 original radiators left out of a total of 16. Each year at around about this time before the heating is switched on again I bleed the system and then turn on heating. Most of my downstairs rads are luke warm at the bottom and hot at the top. The system has been cleaned once whilst i've lived here.
It is not all the radiators, so i turn off all the hot ones and leave the problem ones on and after a short time they get hot too. I have tried removing the TRVs and pressing the little tit on the v/v but i cannot seem to get all 16 totally hot together.
I have read about sludge but I can't see it being this because they do get hot when the load is reduced, at the moment i have 1 radiator off the wall and the valves shut off due to decorating, there is no circuit through these pipes. I think this will give me performance issues but it is the same each year when all 16 are operational? Any advice would be gratefully received. Could it be an undersized pump maybe? it's a wilo gold 50 on setting 3 at the moment.
