In order to fire a kiln, you will need the following: you will need to have a damper. There will also need to be a means of checking the fire, looking in to see the flame. Each stage will have to be closely monitored. Let it fire until it reaches an adequate temperature. It will transition through phases of heat. As it reaches reduction, you'll need to monitor the rate of rise. This stage, the reduction phase, is a slow stage of rise. It will take many hours to reach reduction phase. It will take many more hours to reach the appropriate temperature. Always wear safety equipment.