hi
ive a sealed central heating system, and i want to drain it, the drain plug is located outside , and when i open it up and open a radiator bleed valve nothing comes out.
i have noticed a pipe that bends with a valve on it, its above the mid pos valve i want to change.
i have included a pic of this, is it anything to do with it.
View media item 36071
View media item 36072
could someone say what im doing wrong, and when i go to refil it, do i just add 2 bar to the red tank and open valve on radiator to bleed them and fill system up.
thanks for any help
ive a sealed central heating system, and i want to drain it, the drain plug is located outside , and when i open it up and open a radiator bleed valve nothing comes out.
i have noticed a pipe that bends with a valve on it, its above the mid pos valve i want to change.
i have included a pic of this, is it anything to do with it.
View media item 36071
View media item 36072
could someone say what im doing wrong, and when i go to refil it, do i just add 2 bar to the red tank and open valve on radiator to bleed them and fill system up.
thanks for any help