Weird Plumbing - Hot and cold in two inchs!

[Fookwit]

Hi,
I have recently connected a new panel radiator and two towel rails, to do this I re ran the 22mm feed to the downstairs rads, basically moving the downstairs feed to the opposite side of the upstairs room, through the two rails (one up - one down) and then off to the other three downstairs radiators.

The upstairs rads and towel rail get baking hot, the downstairs rail gets baking hot, then you can feel along the pipe as it gets cooler and cooler, within a few inches it goes from being hot to cool?

When I turn on the drain off tap outside it comes through hot so I wouldn't think it'd be sludge?

Does anyone have any ideas????

Thanks in anticipation!

 

[kevplumb]

try balancing them

 

[Fookwit]

Thanks for the reply, I'm just in the process of doing that now! I've turned off some of the upstairs ones and the downstairs ones are warming up! I'll run some flushing stuff through it tomorrow>

The ones that are warm downstairs are warm in places, would that be an indicator for sludge?

Thanks again

 

[ChrisR]

Sludge typically makes the bottom channel of the rad cold in the middle, and the rad still cold part way up. Like a mountain in the middle going down to the valves at the ends. But you can just get odd parts in the middle of a rad cold. (Usualy after it's been powerflushed!!)