Can a smoothtop be used for canning?
Do not attempt service or replace parts of the appliance unless referred to in the owner's manual. Follow all safety precautions provided in the owner's manual.

We do not recommend smoothtop cooking surfaces for canning because they may not achieve the optimum canning results. With a smoothtop cooking surface, it is very important for the cookware size not to exceed the burner size by more than one inch to allow proper burner to cookware contact. Since canners are normally much larger than the largest burner, it will be very difficult to maintain the type of boil necessary for canning.  
 
Also, most canners do not have a flat bottom and it is essential for cookware to have a completely flat bottom when using a smoothtop cooking surface.