OK. At some future stage we may want to let the main farmhouse so I am
anxious to keep the heating system understandable.

regards



--
Tim Lamb

In that case I would suggest you duck out of this complication - in
fact having seen what inexperienced users do to log burners, I would
duck out of that too; recently been to two places where the log stoves
had been b******d by users not knowing how to use them.

Rob