Im needing to drain my central heating system! I have a combi boiler and I just want to check I have the right ideas.
My plan is to Turn the Boiler off, connect a hose to the train valve and open it. once the water stops flowing ill open the air valves on the radiators starting from up stairs. once all rads are open and the water has stopped, I can do the job I want to do (fit new thermostat valves on rads).
How do I flush the system? Do I just leave the drain valve open and open the filling valve? The water in the rads is black so I assume the system needs a clean!
I then want to add some anti corrosive stuff. How do I do this?
Once done I then close the drain valve and open the filling valve untill the preesure goes up to ~1.5bar then open the air valves on the downstairs radiators first.
does this sound ok. I don't want to flood my house
Thanks for your help
My plan is to Turn the Boiler off, connect a hose to the train valve and open it. once the water stops flowing ill open the air valves on the radiators starting from up stairs. once all rads are open and the water has stopped, I can do the job I want to do (fit new thermostat valves on rads).
How do I flush the system? Do I just leave the drain valve open and open the filling valve? The water in the rads is black so I assume the system needs a clean!
I then want to add some anti corrosive stuff. How do I do this?
Once done I then close the drain valve and open the filling valve untill the preesure goes up to ~1.5bar then open the air valves on the downstairs radiators first.
does this sound ok. I don't want to flood my house