On 31 Jan 2006 08:36:00 -0800 someone who may be "paul"
wrote this:-

no pump,

Sounds unlikely. If you cannot see a separate pump then it is
probably built into the boiler.

heating is off a potterton gas boiler,

How old is it, roughly?

although there is also an electric immersion heater...

So, there is a hot water cylinder. When you follow the pipes from
the towel rail where does each one go? Do they go to the hot water
pipes, or the ones from the boiler?


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54