My setup is very similar...different stove, but a Harman. same thimble, same OAK, and installed tightly in the corner. even have a slate hearthpad...and the same train table! LOL!
Most everything has already been covered. outside is "steam", not smoke; might be a small leak in a joint in the exhaust pipe inside. I have a different brand pipe, and I had to chase the smoke leaks quite a bit, at first. Even after I caulked it up as good as I could, I still thought I could smell a teeny bit of smoke on startup...but only then. Once I moved to burning 24/7, of course, this stopped being an issue. Now, I only shut it down occasionally for cleaning, and after starting back up from a cold start, I don't notice any more smoke. so that theory of ash plugging up the small leaks...makes sense to me.
One thing I did want to add was about the temp probe. Most everyone says that it works fine just coiled up behind the stove, but I don't find that to be the case at all. Maybe its the corner install...maybe the color paint on my walls, or something. I don't know. But its definitely warmer behind the stove than it is in the rest of the room. There's alot of radiant heat reflecting off the sides of the stove and the walls right there. With the probe anywhere near the stove, in room temp, the stove won't bring the room above 70. (subsequently, the rest of the house is "too cold"). With that very short piece of wire they give you, you can't get the probe far enough away to get an accurate assessment of the actual room temp. I tested it with a thermometer, though, and it is sending the "correct" temp to the stove's computer. so, its "doing exactly what its told"; its just being told that its warmer than it really IS. Anyway, I got some thermostat wire from home depot, and made up an extension for it, and moved the probe a good 10 feet away from the stove along an adjacent wall...have it tucked up behind a couch, so its sticking out of the top of the couch-back. In this location, the stove maintains the exact temp thats selected on the dial.