Combi question

So in theory it'd be possible to 'chip' a boiler to boost performance?

sponix

In a word, nope...! (Sounds like this is the designed behaviour for yours, but it is certainly not standarad behaviour for all of them).

Not in itself.

The only legal requirement if you are going to make alterations to gas appliances is that you be competant to do so.

(although there is no legal definition of what competant means in this situation!)

You're not too far from the mark. my boiler controller contains fairly rudimentary electronics - for a few quid in parts a simple microcontroller chip can add a bit more "intelligence" to the design. E.g. NOT running the pump for so long when the CH is cold, modulating flow based on incoming water temp. dispalying flow/return/DHW temps etc. etc.

Of course it'd take some time reverse engineering the existing boiler, then building/programming a replacement. Time I don't have (too many other jobs!) hence it's just an idle thought at the mo...