On 16/02/2021 20:44, AJH wrote:
On 16/02/2021 20:35, Chris B wrote:


My question to the group, if you drain all the water out of a back
boiler system, does that preclude using the open fire?Â* IE will you
melt/damage/distort the fireplace/boiler?

IIRC people would fill the back boiler with dry sand andÂ* the top vent
left open and carry on burning.worse case then would be sand spilling
into the fire as the steel oxidised.

That was what the guy who looked at ours wanted to do. You need
something behind it to take way some of the heat. The metal on its own
would heat up too quickly. It will run a lot hotter with dry sand in but
nowhere near as hot as a thin sheet of metal with air behind it would.

--
Regards,
Martin Brown