This is due to the fact that the face of the machine matters when using pipes.
Top side equals top slot. Side equals side slot. Bottom equals bottom slot.
The furnace works because you are pumping IN the top and OUT the side. The Macerator would work the same way, but you have it set so it will pump OUT the top.
Top side equals top slot. Side equals side slot. Bottom equals bottom slot.
The furnace works because you are pumping IN the top and OUT the side. The Macerator would work the same way, but you have it set so it will pump OUT the top.