arduino and multiple thermo sensor

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also, I am not 100% sure that with a woodstove, 125° is sufficent, it MUST but sometime water may boil and reach xxx ° before exploding the tubes.
One reason to create this controlled woodstove.

Just for expl.

woodstove is a non interruptible process. I need to spread the hot water following a prioritised route. But when reaching all the thresholds ( heating circuit, buffer tank and sanitary hot water) where can I divert the excess of t°?

Thanks to these proj. It will advise ( my wife or me ) to stop loading wood BEFORE or to load more,

regards,