I heat my RO room using a 8000 BTU wall mount vented propane furnace. It goes down to 40F fine, but the lowest number on the face is 45. It won't go below 40 or it hits the off mark.
To answer your question, you should be able to install a separate thermostat and dis-able the one it has. Study it and figure what it is doing. On most propane fired heaters they will do 1 thing, turn the burner on and off.
Last edited by maple flats; 02-05-2021 at 03:04 PM.
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.