Which code establishes requirements for combustion air in fuel gas applications?

The National Fire Protection Association (NFPA) has numerous codes and standards that govern various aspects of fire safety and related topics. NFPA 54 specifically addresses the installation of gas piping systems to provide adequate gas supply and safety measures for fuel gases. Among its provisions, NFPA 54 outlines requirements for proper ventilation, including combustion air, for appliances that use fuel gas. This ensures that there is sufficient air supply for combustion, helping to prevent dangerous conditions such as carbon monoxide production and ensuring efficient operation of gas appliances.

In contrast, NFPA 72 deals primarily with fire alarm systems; NFPA 31 provides standards specifically for oil-fired appliances and systems; and NFPA 25 focuses on the inspection, testing, and maintenance of water-based fire protection systems. None of these codes pertain to combustion air requirements for fuel gas applications, making NFPA 54 the appropriate choice for this context.