I just built my first Fusion Reactor!!
Unfortunately, it adamantly refuses to start! I have all 3 heating devices, a copper coil, lithium, deuterium fuel, a fully charged RE battery all in the same positions as the OP. I left-clicked it, but that just tells me that it has no heat, no fuel, no breeding, no storage. I applied redstone, but nothing happened. I even tried putting a partly-charged Lapotron crystal into the heating power slot, but that didn't change anything. It is currently attached to a MFE transmitter.
What's wrong? The rest of the mod appears to work fine, I used a mobile auto miner to great effect earlier. Why won't my reactor start?!
Edit: GAH. You have to put fuel in BOTH SLOTS, not just the one. Hope I helped someone.