Our 3121 has switches for tank heaters. Looking behind the basement wall, the water lines are all within the open area under the floor and open to the return registers. But there may be a furnace supply duct under there too. That would make sense, I may have misspoke. I'll pull the walls down and check as soon as I can.
__________________
2019 Montana 3121RL
2017 XLT 350 SCLB DRW 4X4
|