Big tank, extra coils?

[lightfoot]

Great ....9 out of 10,  (I like the way you done the sketch, wish I'd thought of that.)   But to be effective the pump would have to be running a short while before you open the taps as you will gain nothing if you just operate the pump with a reed switch.

It's been great doing business, good luck.

Lightfoot.

[lightfoot]

Kristen,

There should also be another non return valve (A) after the pump and before the tee to stop the pump being forced backwards when the taps are opened.

                         Tank Coil
Mains in --(V)----> T -----$$$$$$$ ------> Hot water taps -----\
                     (A)                                          |
                       \-----(pump)---<<< return <<<--------------/


Lightfoot.