What is the minimum distance equipment with a draft hood must be from combustible material when installed in a single-wall metal pipe?

When installing equipment that has a draft hood and utilizing a single-wall metal pipe, the minimum distance from combustible materials is established to ensure safety and prevent fire hazards. The correct answer is based on industry standards that specify a clearance of 6 inches to combustible materials for this type of installation.

This distance is critical because the exhaust from the draft hood can become hot enough to ignite nearby combustibles if not adequately spaced. The 6-inch clearance helps to dissipate heat safely and ensures that the installation complies with safety regulations and best practices in gas appliance installations.

In contrast, options that suggest lesser or greater distances do not meet the established safety standards; therefore, they do not provide the necessary protection against fire risks associated with heat buildup. By adhering to the 6-inch minimum distance requirement, installers can help ensure better safety for occupants and structures, thereby fostering a safer environment when using propane appliances.