How far must a fuel storage tank be located from the furnace?

The requirement for the distance between a fuel storage tank and a furnace is grounded in safety regulations designed to prevent fire hazards and ensure proper ventilation. In Maine, as well as in many other jurisdictions, the standard distance mandated for residential heating oil storage tanks is 5 feet. This distance is established to reduce the risk of overheating and potential ignition from the furnace, while still allowing for operational efficiency.

By maintaining this 5-foot distance, it helps ensure that any heat generated by the furnace does not adversely affect the fuel storage tank, thereby minimizing fire risks. Additionally, this spacing allows for safe access to the equipment for maintenance and checking the fuel levels, which is crucial for the overall safety and functionality of the heating system.

The other distances provided do not align with established fuel storage regulations and could potentially create a riskier situation regarding fire safety. Thus, the correct answer emphasizes adherence to safety standards in fuel storage practices.