Air in sealed system,

[jase158]

Hi all, got an issue with air in a sealed system,

I am changing several radiators and had to drain down to do this.
When i refilled the system I can hear air going through the system causing a lot of noise,

I want to solve this but I am not sure how to do this.

Now the radiators are on seperate drops downstairs, meaning that they need to be drained down individually to drain down properly, unfortuaneatly the customer has brand new carpets and there is not a drain valve on every radiator.

I have put an aav on the flow to the cylinder but this still hasn't helped.

Anybody got any idea, I hope I have explained this properly.

cheers guys.

 

[RoryD]

Not entirely sure whether the jobs done and you have air left in the system. If thats the case all I can think of is to bleed the system when there is a no flow situation. Will be reading with interest what the result is mate

 

[jase158]

bit confused with what your saying RoryD, I haven't put the radiators back yet, so its not completed yet, but I have refilled system so that customer has heating and hot water, which is when the system started to make the noise, customer says it happened before and BG came out and fixed it, but whatever I have done has started it off again. I only bleed the system when there is a no flow situation? as I dont turn pump on to bleed radiators.

 

[mickie]

pull the carpets back and fix a hose to each end of the rad, its a pain but thats what i do.. or you could buy a clamp on drain off, dunno what you call them, someone posted it up a while back

 

[mickie]

you have re-filled the system but havent finished yet ? im confused

 

[jase158]

pull the carpets back and fix a hose to each end of the rad, its a pain but thats what i do.. or you could buy a clamp on drain off, dunno what you call them, someone posted it up a while back

Cheers Mickie, I know what you mean, but I don't want to take any chances with the carpet.

 

[jase158]

you have re-filled the system but havent finished yet ? im confused

taken radiators off so tiler can do his thing, then they will go back on again.

 

[kay-jay]

well until the rads go back on you ain't gonna have a circuit downstairs are you? wait til all the rads are back on, then bleed em all one by one.
if this doesn't work close down any rads that are getting hot, thus making circuit smaller and increasing probability of pump moving the air around and out.

if this doesn't work and you need to drain down each of your drops use a self cutting washing machine valve on the pipe, when drained remove it and solder on a proper doc for future.

refill slowly.....then bleed again and should be ok

KJ