Combustion air must be provided according to which of the following?

Combustion air is essential for the proper operation of combustion appliances, and several sources provide guidelines on how to ensure adequate air supply. Local building codes often set forth specific requirements for combustion air to ensure safety and compliance with regional regulations. These codes reflect local environmental conditions, building designs, and community safety standards.

NFPA standards, especially those related to fire safety and prevention, further stipulate requirements and best practices for combustion air to mitigate risks associated with fire hazards. This ensures that appliances operate efficiently and safely without generating excessive carbon monoxide or other dangerous gases.

Manufacturer specifications play a crucial role as well, as they provide the specific requirements set forth by the appliance manufacturers. These specifications are based on extensive testing and design criteria specific to each appliance, ensuring that it functions correctly and safely within the designed parameters.

By considering local building codes, NFPA standards, and manufacturer specifications, it becomes clear that all three sources must be consulted to guarantee that combustion air is provided correctly and safely. Therefore, it is imperative to acknowledge that compliance with all these guidelines is essential for ensuring the safety and efficiency of combustion appliances.