"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?

Jim A