Issues with 22mm piping??

[Ben Miners]

only one valve open as the plumber said i only need to open 1 on each rad??

 

[ShaunCorbs]

only one valve open as the plumber said i only need to open 1 on each rad??

open both

 

[Ben Miners]

ok I have opened both on all rads but still nothing yet

 

[jtsplumbing]

I recon you have either a blockage or air lock, 3 rads with an output of 4500 btu's each 15mm should cope with it. things you need to try first to see if water is going through when you turn on one of the new rads does any of the pipes start to get hot ?? did the old rads work B4 and what was the output on those were they single or double panel rads

 

[Ben Miners]

so just to clarify the 3 rads are currently on 22mm, previously were standard rads on 15mm. not sure of the previous rads but but were standard size etc.

one of the rads started to get hot when the water flowed in but then seems to cool down again.

the old rads worked fine which were single column

thanks again for your helps

 

[Ben Miners]

how do I check for a blockage or air lock??

 

[ShaunCorbs]

how do I check for a blockage or air lock??

turn half the working rads off

 

[Ben Miners]

ok so once I have turned half the working rads off, then what do I do? Should I turn off half the rads in the house off or just downstairs?

 

[jtsplumbing]

how do I check for a blockage or air lock??

Are you using a plumber or DIY ? you will need to disconnect one side off one of the new rads both ends closed, open up a valve let water into a bucket if that side is getting hot then repeat with other side , any plumber would know how to do these basic checks, total waste of time changing pipe to 22mm if its connecting back to 15mm, it should 22mm going onto 15mm, it seems your going to finish up digging up floors until you find the original 22 mm pipe.

 

[Ben Miners]

can I just turn the stats down to zero???