Takes a while but thats how its done! Expect half a gallon of water as a round figure.
John, October 2009
Thanks Glen. Have tried that but not sure how much water should flow. Do I let water flow until the pressure has gone down to the desired level?
Odette, October 2009
The easiest way is to open a radiator vent and catch the water in a cup or bucket until the pressure goes down.
Turn off the central heating while you do this.
You need a radiator key to do it.
Glen, October 2009
edit
I can answer this question...
How do I reduce the pressure on the water pressure guage?
