Radiators not getting warm

[John Rumm]

It would be interesting to see the rad fall off the walls as well!

[John Rumm]

Not sure its really possible to do one without the other.

[Grimly Curmudgeon]

Exactly. I had one here, with a footvalve that does the jet-pumping operation. My borehole is 60' deep afaik - although it might be less now, as it's not been used for a decade.

The borehole's still for sale, btw; buyer collect.

[<me9]

A lift of about 22 feet is about the practical limit. I assume the jet pump is some form of venturi down the well, with a surface pressure pump to it. An air injecter is another method of exceeding the 32 foot (theoretical) limit.

[puffernutter]

.....and back to the original problem!

I have shut down all other radiators and left the pump running. No effect. Again, if I remove the bleed valve, I get warm water through, so the supply side is OK.

To try and resolve this, I plan to fit an automatic bleed valve. I can't do it at the highest point as the pipes are against the ceiling,is there any reason why I can't do it on one of the verticals as high as possible?

Cheers

Peter