i close my door and keep it open a small bit on the right side (to allow some air in the oven.) as the fire logs catch they usually produce a lot of flames and heat my oven get up to at least 750 and begins to cool down as the fire dies down. i allow the logs to burn down and have a small bead of coals and fire burning then i open the door us usually about fifteen to twenty minutes in.
reminder: your oven will smoke if you are using the wrong wood. to avoid too much smoke, use hardwood that is kiln dried keep your wood covered 