draining central heating system

[aajj]

:I want to drain central heating system in order to replace a downstairs radiator valve can anyone suggest procedure. house is only 6 years old so newish system

 

[oilman]

You don't need to drain the whole system.

Go to the tabs at the top and click "How To" then "Plumbing" then scroll down to Central heating. It's in there.

 

[aajj]

thanks for advise ive been back through central heating as advised but still unable to identify correct advise with regard to how to drain system or individual radiator in order to replace leaking valve -anyone able to advise further (thanks oilman)

 

[DP]

More info required. Make and model of boiler might help

 

[oilman]

Do you really want to drain thwhole system?

You only NEED to shut off the valves, catch the water in the radiator when you undo the valve nuts and then remove rad and replace.

Or are you putting in a different size radiator?

Find drain cock at lowest point, Turn off water supply to tank if system is vented,
connect hose to drain cock, open drain cock (with hose pipe outlet outside house).

 

[masona]

replace a downstairs radiator valve

I think aajj want to replace the whole radiator valve ??? if so,what is wrong with the valve?

 

[oilman]

OOOOPPSS!!! I should read the posts. Didn't see the "valve".