What size chimney is needed for a factory with a total BTU input of 962,000 from two Category I fan-assisted appliances?

To determine the appropriate chimney size for a factory with a total BTU input of 962,000 from two Category I fan-assisted appliances, it is important to refer to the guidelines and standards provided by relevant codes and manufacturers.

Category I appliances typically vent flue gases by using natural draft, which necessitates a properly sized chimney to ensure safe and efficient venting. The flue diameter must match the output of the appliances to prevent backdraft or improper venting, which could lead to hazardous conditions.

In this case, with a total BTU input of 962,000, calculations based on the total input capacity would indicate that the recommended flue size falls within a certain range. For Category I appliances, the standard practice suggests having a larger diameter chimney to accommodate the high volume of flue gases produced.

For the given input, a flue size of 9 inches would be appropriate because it balances the need for sufficient venting capacity with the requirements of the appliances being used. A larger diameter helps to optimize the drafting of the chimney, ensuring that flue gases exit efficiently without causing issues within the system.

In summary, the 9-inch chimney size is suitable for handling the specified BTU input from these appliances, facilitating effective vent