Most modern boilers are microprocessor controlled. I have a Viessmann
which is. But to alter anything requires multiple key presses etc. Most
people have a laptop these days so a USB or whatever link to suitable
software on that would make things so much easier to set up. Does anyone
make such a device?

That's how it's done on an aftermarket engine management system
(MegaSquirt)I have on the old car, and in many ways engine management and
a boiler are similar. Indeed, I reckon a MegaSquirt could be used to do
the entire control of a system boiler since it's so flexible. So it can't
really be a cost issue.

--
*A conscience is what hurts when all your other parts feel so good *

Dave Plowman London SW
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