My first year I used a 10x10 peak roof type vendor's tent. The sides were left open but it was between my house and a shed, with 3' clear on the shed side and 3' on the house side. The evaporator (a Leader Half Pint) sat near the back of the tent and the stack went up at about a 50-55 degree angle. I screwed the sections together and braced it with EMT off the railing on my deck that was about 6-7' behind it. Just do what you must, but be safe. I've seen lots of pictures of 3 sided shelters made out of pallets and then a peaked or sloped roof over it. There are lots of places to find free pallets.
Dave Klish, I recently bought 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.