You can do that. I just ran 2 sets of wires from the probes to the control box. One set labeled A the other B. Then I connected the A or B as desired as I was boiling. I just pulled the A off and connected the B to reverse. That way a switch was never in danger of getting bumped and switched by mistake.
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.