A furnace that burns fluid for power. It inherits its specifications from the electric furnace, instead of the steel furnace. I haven't decided whether that's the best thing: let me know in the comments. It will burn any fluid with a fluid_value; so it will not burn steam. It also has pipe connections for smelting recipes that take a fluid ingredient or have a fluid output. Vanilla does not include fluid with fluid_value, but the furnace will work with any mod that adds burnable fluids. If you need some, my Carbon mod adds fuel_value to vanilla fluids, additional fluids to burn, and a way to turn fuel items into burnable fluids.
Furnaces will pass fluid through to the next furnace, if the connections are aligned. The fuel input-output connections do not have blue arrows in alt mode; blue arrows are only seen on connections for recipe ingredients and results. See the picture above: those furnaces are all fed from the line going into the top furnace, which then shares its fluid fuel down the line.
Adamomods will always be free and released into the public domain. If you've enjoyed my first set of mods, I have more planned, and improvements planned for the existing set. I am only limited by time. Consider donating to help me gain more time to make more mods: https://en.liberapay.com/Adamo/