I think that type of burner can have a very wide range BTU output depending on the exact burner. If just stamped metal they can be about 12,000-18,000 BTU max, if a cast iron burner they often range up to 120,000-150,000 range. If it took 3 1/2 hrs, if your propane supply was good, they likely paired it with burners with too little max heat. Back when I had a Leader 16x34" finisher I don't recall what the burners were, but I think they were cast iron. While it heated well, I didn't like the burners because they heated with 2 rings on the pan where it was hotter. Tube burners give a far better dispersed heat. Here's one that generates 210,000 BTU, the same place has burners from 55,000 to at lease 210,000 BTU, all at decent prices. https://www.webstaurantstore.com/bac...RoCCX8QAvD_BwE
Last edited by maple flats; 04-01-2020 at 10:23 AM.
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.