Dumb question, probably, but you guys have come through for us in the past...
Our house has a fireplace installed by the previous owner with two sliding knobs. Our question is, what are these?
The top slider is probably the flue. If so, is convention that the in position is opening or closing the air to the chimney?
The center knob is obviously for opening the door.
Finally, what do you think the bottom right slide does? If you had to guess, what is the difference between the "in" position" and the "out" position? We've played with it when the fire is working but we don't notice a difference.
There is some kind of electrical blower on the bottom which, when you plug it in, forces air out the vents on the bottom. However, it doesn't seem like this slider on the lower right controls the air coming out of those vents, at least not obviously.
Any ideas from the world of Stack Exchange?