cold radiater

[buttybabe]

can any one help my bathroom radiater keeps going cold we have flushed through ,checked thermostate, i have got it hot by pulling water through but it then goes cold, confussed from weymouth

 

[gas4you]

Need more info.

What system is it on, combi, system boiler, fully pumped, Gravity hot water.

As much detail as you can give will help.

 

[buttybabe]

hi its on a combi potterton performa 28

 

[clf-gas]

Are the valves at bottom open

 

[buttybabe]

yes,im sorry im not much help

 

[gas4you]

Is the system pressure cold between 1 & 1.5 Bar?

 

[buttybabe]

its at normal when hot have not looked when cold as its always on ,if i turn it off would it tell me

 

[clf-gas]

Try bleeding air from top...

 

[buttybabe]

have done that, and kept it going till i got hot water, but after a while radiater goes cold

 

[buttybabe]

its the last in line all others work ok

 

[gas4you]

are you sure both rad valves are open as clf asked but got no answer?

What do you call 'normal' pressure when hot?

A few people think I am normal, but others don't

 

[clf-gas]

Then it is down to balancing, try closing lockshield valves a little on other rads nearby

 

[buttybabe]

im sure they are open or i would not get hot water coming through and normal presureis between1.0 and 2.0

 

[buttybabe]

thanks will try that, you guys are great

 

[clf-gas]

thanks will try that, you guys are great

We all are

Here have a read of this http://www.diydata.com/projects/centralheating/balancing/radiator_balancing.php

Enjoy