I dont dare put 5 or 6 smaller 2x18 or 3x18 in pieces in at a time, with the damper totally closed the outside temp or the double walled pipe will hold at about 600 degrees which means that it is much hotter inside. I have an installer who put the stove in coming to look at it.
Usally if I just put one larger log in it is controllable being totally shut down
Usally if I just put one larger log in it is controllable being totally shut down