The Natural Philosopher wrote:
Any advice would be greately appreciated.


It is almost impossible to damp a 10Kw stove down low enough to stay lit
overnight, on wood.

Coal might do it .

Yes, that's how we keep our (12-14kW I think) stove running overnight,
we burn wood most of the time but put coal in and close the dampers
for it to run overnight.

--
Chris Green