I have only a baro on my 507 setup, no manual. The Jotul is a very air tight stove which makes it so easy to control. I can hold onto the pipe within ten inches of the stove. Above the baro the pipe is just warm to the touch. On days where the outside temp is going to be fairly warm, I will throttle the Jotul up just a little to dump more heat up the chimney so I don't loose draft. Yesterday the Jotul had a seventeen hour burn between refueling. Currently my 507 is running at a temp of 400 F. When I ran my Jotul 24/7/365, in the summer months you could hold onto the stove and it would be just a little warm to the touch. I was dumping just enough heat up the chimney to keep a positive draft. Greg makes a good point concerning the possibility of a loss of fire or loss of draft. If your going to run your stove low these are things you have to pay attention to. It can be done since I have done it for a few years, just pay attention to your co detectors and your stove. With my Jotul I tested the idea of having no baro verses a baro. I installed my baro and then capped it to see what kind of pipe temps I would get as well as burn times. I then burned the stove with the baro uncapped. Again, measuring temps and burn times. Even though the Jotul is a very air tight stove I saw decreased burn times and increased pipe temps with the baro covered as compared to using the baro. This is just my two cents.