Radiators still cold at bottom after powerflush

[k13rac]

Hi,

I recently had my 12 radiator house powerflushed as majority of Rads were V hot at top but luke warm at bottom. After the powerflush the rads upstairs appear to be working fine now however bottom rads still Hot at top but luke warm at bottom.

I then fed the system with Sentinel X400 and left with heating on full for 24hrs with all upstairs rads turned off to force feed the downstairs rads.

I have taken all downstairs Rads off individually and have flushed them out until the water runs crystal clear. (Turned radiators up and down and back to front several times and gave sides a good thump to loosen off anything stuck).

Once all put back together and system bled, still the downstairs rads, 1 in particular, are V Hot at top but luke warm at bottom.

What can the problem be ?

 

[MUFC1999]

Hi,

I recently had my 12 radiator house powerflushed as majority of Rads were V hot at top but luke warm at bottom. After the powerflush the rads upstairs appear to be working fine now however bottom rads still Hot at top but luke warm at bottom.

I then fed the system with Sentinel X400 and left with heating on full for 24hrs with all upstairs rads turned off to force feed the downstairs rads.

I have taken all downstairs Rads off individually and have flushed them out until the water runs crystal clear. (Turned radiators up and down and back to front several times and gave sides a good thump to loosen off anything stuck).

Once all put back together and system bled, still the downstairs rads, 1 in particular, are V Hot at top but luke warm at bottom.

What can the problem be ?

What size are the pipes 8 or 10mm, are they copper pr plastic, how big are the problem rads

 

[k13rac]

Main rad is 55 inches in length x 24 in height. The other is 35 x 24. Pipe work is 10m plastic.

 

[mickyg]

who powerflushed it? get them back. Probably just balancing but that should be part of the job.