The installation of factory-built chimneys must adhere to which of the following?

The installation of factory-built chimneys must adhere to the manufacturer's specifications because these specifications are developed based on safety standards, performance requirements, and specific material properties of the chimney system. Manufacturers conduct extensive testing to ensure that their products meet certain performance criteria and safety standards, and they provide detailed installation instructions to ensure that the chimneys function correctly and safely. Adhering to these specifications minimizes the risk of installation errors that could lead to hazardous conditions, such as chimney fires or carbon monoxide buildup. It is essential to follow the manufacturer's guidelines for materials, clearances, and installation methods to maintain warranty coverage and ensure compliance with relevant safety regulations.

While local building codes, national codes, and environmental guidelines are important in the overall framework of construction and safety, they may vary significantly by jurisdiction and region. However, the manufacturer's specifications are specifically tailored to the product in question and are critical for its safe and effective operation.