When baking, food placed on the bottom rack of the oven may cook faster; however, it may cook too fast, and burn. When broiling, food placed on the top rack of the oven will cook faster, but will need careful watching to prevent burning.
An oven rack that is split!!!
Always cook a cake on the middle rack, whether the oven is on fan forced or not, otherwise you'll burn the top.
The best way to clean a grill rack for an oven is to remove it from the oven and soak it in warm, soapy water for about 30 minutes. Then, scrub the rack with a brush or sponge to remove any built-up grease and grime. Rinse the rack thoroughly and dry it before placing it back in the oven.
-Immerse in cool water for 10 or 15 minutes.-Use compresses if running water isn't available.-Don't apply ice. It can lower body temperature and cause further pain and damage.-Don't break blisters or apply butter or ointments, which can cause infection.-Cover the burn with sterile gauze
Middle rack.
Yes, you can put pizza directly on the oven rack when baking it.
In the center of the oven and on the middle rack.
Cake is a poor conductor of heat. Kind of the same reason you don't get burned sticking your hand in the oven. The air may be 350 degrees the same as the pan and rack but you get a much different response from touching them.
You can find a rack for a Decosonic oven at many websites, including eBay, or directly with the manufacturer.
The bottom sheet does not burn because one would be careful not to position the bottom rack too close to the heating element.
Unless a recipe provides specific instructions to something different, you should bake using the centre rack in the oven