!Daft question alert!
As I was installing my new towel rail a question dawned on me.... how do you drain it down after it is full? It is connected to the C/H system via two vertically mounted straight through valves, so the usual 'break the union with a tray underneath' method is out of the window.
The only two options I've though of are: (1) Drain the system down until the rad is empty (lots of hassle) (2) Unscrew the bleed valve assembly from the top and then use a hose to siphon out most of the water, before unscrewing one union with a BIG sponge handy (feels like a bodge.... with the bonus of getting a mouthful of fernox!).
What's the conventional wisdom on doing this, as these two methods seem a little haphazard to say the least!
Cheers, James