On 24 June, 12:30, Gordon Henderson wrote:
It heats up uniformly from the bottom to the top in about 1-2 minutes when
the CH comes on. It's the highest point in the system so does occasionally
need bleeding (not often though - really not sure if there's a leak,
or whatever, but it's not enough for me to wory)

Gordon

add and "aladdin auto vent" or similar?

Not worth it for the time it takes - once every couple of months or so.

if it makes you feel useful ;)

And it's not compatable:

ahem...for e.g.

http://www.tradeplumbing.co.uk/Aladd...e_p_14177.html

The bleed-valve is a tiny screw in thing at the top of one of the
verticals. Nothing more clever than a small bolt and fibre washer!

yes that's what the auto vent replaces....

Jim K