A year ago, I bought a Sanyo Kerosene Heater (model OHC 510) at auction, so it came with no instructions or manual. I've never used a kerosene heater before and am a bit flummoxed as to how to go about using it. Does anyone else here have one of these heaters? I just need simple guidelines on filling and --- and, well, turning it on, wicks, etc. ?