According to which code must requirements for combustion and dilution air for gas-fired appliances be followed?

The requirements for combustion and dilution air for gas-fired appliances are specified in the International Fuel Gas Code. This code is specifically designed to address the safe installation and operation of fuel gas systems and appliances, outlining essential requirements for venting and air supply to ensure proper combustion. Proper combustion and the correct mixture of gas and air are crucial for both performance and safety, including minimizing the risk of hazardous conditions such as carbon monoxide production or incomplete combustion.

While the International Mechanical Code does cover various aspects of mechanical systems, including ventilation, the International Fuel Gas Code specifically targets the requirements related to gas appliances, making it the more appropriate reference for combustion and dilution air requirements. The National Electric Code primarily deals with electrical installations, and the Building Standards Code pertains to broader building construction aspects, which do not focus specifically on gas-fired appliance ventilation.