I hold about 130 pounds.
The air enters the bottom though an open thats contolled by a Dial Heat Regulaor. There are two draft louvers that diect the air up through th coal. There is a spin damper on hte feed door. They suggest opening just a little. I've got it open about a turn and a half. Does not have the same effect as the damper on the Hot Blast. If you open it on the Hot Blast it would kill the fire. This stove has no effect. Probably because of where the flue gas exits the fire.
The 82 FA is configured a little different than the 82. Most likly becaucse of the air jacket. The side opening your talking about is on the back of the 82FA.
I can just tell by the way this thing burns that I'm going to very happy with it. I run it for a couple of days and then start tinkering with it.