Hey Derik,
I have the same nashua I think , judging from google pictures. 2 rotating vent controls on the bottom left and right, 3 hinge pin door and blower on back with exit vents on each side , kind off opaque window on the door? Our Nausha puts out great heat. No secondary combustion but it will give you a fairly clean burn once it heats up (with dry wood). We use it to heat the main part of our house old 1929 farm house (cold) when it gets really cold out.
The stove was here when we bought the house 6 years ago, immediatly replaced one or two fire bricks and then door gasket a couple of times.
Originally I started making big fires (huge stove compared to my LOPI answer) now I've learned that once heated up smaller fires work well and save on wood usage (it can blow through wood if you let it). I keep the window ( an opaque ceramic glass of some sort ) clean enough to see that there are flames and set the vents accordingly. When shes hot, the flames will be nice and long, which to me looks like a fairly clean burn.
We dry laundry using the blower and it is awesome. The stove throws plenty of heat without the blower.
We love taking the door off and using it like a fireplace when we have company...old timey.
One thing I did after using it for awhile was to put a line of fire brick on the shelf inside the stove where the smoke exits the stove. For some reason it seemed like the opening was too big so I've been using it this way with no problems.
My 8 inch stove pipe goes horizontally into a chimney that is way larger than 8 inches and it draws very very well.
Enjoy!