Bleeding Rads

[maxcars1]

Boiler Worcester 24i running 10 rads. I'm having a nightmare bleeding my upstairs rads, which are not hot at the top, but scolding at the bottom. My downstairs one will seep water when attempting to bleed, but when I try the updstairs ones I get a hiss which dies and no water comes out, however long i wait

 

[JohnD]

Sounds like you have a shortage of water and/or pressure.

Is your system fed from a small water tank (a feed and expansion cistern) in the loft? It will usually be a rectangular black plastic tank about 1ft x 1ft x 18inches, with a large copper pipe bent over the top of it.

Not all systems have these.

About how old is the system?

 

[Bamber gaspipe]

Boiler Worcester 24i running 10 rads. I'm having a nightmare bleeding my upstairs rads, which are not hot at the top, but scolding at the bottom. My downstairs one will seep water when attempting to bleed, but when I try the updstairs ones I get a hiss which dies and no water comes out, however long i wait

Could be airlock or knackered pump.

 

[Bamber gaspipe]

Sounds like you have a shortage of water and/or pressure.

Is your system fed from a small water tank (a feed and expansion cistern) in the loft? It will usually be a rectangular black plastic tank about 1ft x 1ft x 18inches, with a large copper pipe bent over the top of it.

Not all systems have these.

About how old is the system?

isn`t the 24i a combi??

 

[JohnD]

Yes, I now realise my mistake. It won't have one of these tanks. It will have a Filling Loop and a Pressure Gauge.

"Boiler pressure Problems" and similar posts in the FAQ section will be more use.
//www.diynot.com/forums/viewtopic.php?t=37170

 

[maxcars1]

Well I spent tonight trying too bleed to no avail. Upstairs rads are still predominantly hot at the botton at either warm or cold at the top. All i got out of the rads wewre hissing and the sound of running water, but no water coming out of teh bleed screws - was at it for an hour. By the way the boiler pump is working and at the right pump pressure on teh guage. So I ask what is my next attack? Close all the rads downstairs and then try bleeding again or call the pumber out and pay up?

 

[JohnD]

Did you look at the FAQs, and do you know how to top up the water and pressure using your Filling Loop?

 

[maxcars1]

Did you look at the FAQs, and do you know how to top up the water and pressure using your Filling Loop?

Why would I want to top up water and pressure if the dial gauge on teh Worcester boiler is above the preset operating settings - I'm confused

 

[andsam]

What is the pressure reading.

 

[JohnD]

Did you ...?

...Why would I want to...?

Is that a "No"?

It sounds as if you have insufficient water in the system.

You have been bleeding rads and seem to have no pressure. Your pressure gauge should show a drop in pressure each time you bleed.