On 18 Mar 2004 01:49:50 -0800, in uk.d-i-y (Tony
Commander) strung together this:

couldn't find any valves (unless they are hidden under the
floorboards) but certainly nothing near to either boiler, pump, or hot
water tank.

If there were any they'd be by the cylinder, unlikely to be any if you
can't find them.

pump appears to drag water around the system (cold side of boiler) and
you can definitley feel it start when everything is cool and you turn
the thermostat up.

Sounds about right.

Just the hot water on, does heat most rads.. overriding the thermostat
for central heating.

anyway, we're going to replace the very old timer (to give independant
c/h and water heating) and have a digital thermostat...

Not without major repiping you won't, if you just replace the
programmer and stat you won't be able to do any more than you can now.
To be able to have independent control you need to upgrade the whole
system to a Y-plan or similar.

only have the water heating for a couple of hours a day, as opposed to
most of the time we have the c/h on ( baby in the house so need to
keep it ticking over)

and hopefully the time that the water being heated 'overrides' the
central heating heat will be greatly reduced..

else it's going to be a rip out and replace i suppose...

That's your only option really, if you want it to do anything
different to what it does now.
--

SJW
A.C.S. Ltd.