If your stove was hooked up it would require you to have permits and inspections and those records are done through your township, for your address has been searched through your township, and no permits were pulled, there for nothing is hooked up, now which is fraud, or you did illegal hookups... either way your breaking the law.
You saying you are burning pine its enough to get in touch with your insurance company and have them up your rates or cancel your policy, and her you admit to it so if your not committing fraud by lying, now which is it are you committing fraud or is it illegal hook ups... either way the fines are high.
Not sure how your mortgage company will react when they find out your insurance policy is canceled, yes the insurance company will get in touch with the lender, and I would not be shocked if they took back the house from you or your rates skyrocket.