I discovered the hard way today that these things open at several C, not
at near zero as I had assumed. Minor flood (rad is off for painting, and
TRV is closed) but nothing serious as the newspaper on the floor mopped
most of it up. Fan heater soon warmed it up enough to stop the water
May go out and score some rad caps tomorrow.
Now, this behaviour - is it designed just to avoid local damage to the
rad or pipework, or is the idea that water should move round the system
as well? Seems to me the latter would require the boiler to be involved
"That excessive bail ought not to be required, nor excessive fines imposed,
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