Before installing on my 26' sailboat, I did a full mock-up in my garage. The heater fired up with no problem, no smoke the very first time. I used most of the fittings that came with the heater. I relaced the 10l fuel tank with a 6 liter model. Also I bought a 2 meter exhaust pipe. Everything is now on the boat and working beutifully! I'm very happy with this heater