In message , Jim Alexander
writes

"mark" wrote in message
...
Actually folks I can recommend the whole system, and its a tad cheaper
than a micromat.

vaillant ecotec plus 630
vaillant vr65 control box with 2 off 2 port valves
vaillant unistor cylinder
vaillant vr400 weather compensator using the vr10 cylinder control.

I'll let you know if it breaks...................

might be what I am looking for...

can you tell me if you can program a higher flow temp in the DHW loop than
the heating loop to maximise condensing efficiency?

Not without looking but the manuals are available at Vaillants site in
pdf form.
I'll have a look myself as soon as I'm less unsober.....
--
Mark Roberts