Pop down the diy store and get a self-cutting washing machine fitting, (there about £5).
Work out where you think the lowest point is and pop it on and connect to hose pipe.
You could get some spillage, but make sure the hose goes on properly and but something down.
After the system has emptied, repair the damage and fit a drain off valve.
I found an old 12" piece of 15mm copper with a nut and olice on each end. I also found a spare drain cock.
Put drain cock on one end, closed both rad valves on the rad near the front door. Unfastened the valve from rad and replaced with my piece of copper and off we went...
Rad moved and now a new problem... took my a while to bleed the system till the boiler would fire up (apparently it has a sensor, if there is air it will not fire).. Anyway got it fired...
Upstairs rads are redhot...... But I can't get any rad downstairs warm, there is obviously air trapped somewhere but i cant shift it.. any clues..
I have tried bleeding, turning off some of the other rads, but still no joy..
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