A steamaway can be ordered to fit any flue pan. I think a steamaway might work without a hood because it in effect is a hood arrangement with steam tubes in it, but it seems like a poor idea. Access inside the flue pan would be far more complicated I think. Why would you want one without a hood? A steamaway will increase your rate from 50-75% without any more fuel, just the power to run a blower. #4. NO!
While a steamaway is a great piece of equipment, an RO will give you far more bang for your buck. In your size at best a steamaway will add 20-30 gph and the same money for a RO will give you over 200 maybe over 300 gph increase. Look at Waterguy sap units and maybe others too in a good price.
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Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.