Cold Radiator

[brianb]

I installed extra rad in Bathroom a while ago,but it doesn't always get hot.At the moment its not getting hot at all,not even pipes.The pipe was cold right back to the T in the loft where it was just about warm.
I connected up from the kitchen rad pipework (15mm) up in the loft.
I have a Combi Boiler sysyem and wonder if i should have picked up flow from the 22mm pipe work and then reduced to 15mm before coming through the ceiling.
Thanks for any help
Brian

 

[PrenticeBoyofDerry]

It is always best to take from 22mm flow and return to as close to rads as possible.
If you turn the rest of the rads down/off does this rad then get hot?

 

[brianb]

Yea if i turn other rads.off Bathroom one gets hot,but it doesn't last..will change pipe work to 22mm me thinks..