I'm wanting to drain my central heating to change some pipework in my kitchen. When draing before I cut the pipes do I need to open all the air vents on the rads or could I leave these shut. Will the water stay in the radiators because of air lock?
draining central heating
- Thread starter Fallout
- Start date
If you want to drain the central heating system yes you will have to open the bleed vents. What pipework are you altering exactly?
It depends where you are going to cut into them and your pipework layout but you will have to drain down any pipework which is higher than the section you are going to work on.usually best to drain whole system.
Auto means it will come on and go off according to the time periods you have set.
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