Den said:I think the rule is that if you build a jumb0 stove that holds 80 lbs of wood, the flue must be large enough to handle the exhaust flow generated by an 80-lb load, or you will soon be sued out of existence. Doh!
Maybe yes, maybe no, Homer.
Exhaust flow depends on burn rate, no? The Princess, rated at 40KBTU has a 6", while the King, rated at 47KBTU. Maybe that is the reason, but it seems a relatively small difference, with the firebox size difference being greater.
Riddle me this--wouldn't connecting a stove to an undersized, but otherwise well designed and drawing flue, have the exact same effect as closing a flue damper at high burn rates, simply limiting maximum burn rate, with no other negative consequences?
I can see why a company would not authorize under-flue-ing on basic principles--why take liability when there is no upside--but would there be any effect other than limiting maximum burn? If there were, wouldn't the same negative effect occur with flue dampers?