For appliances using forced draft venting, what is the required minimum clearance from vent terminals to combustion product openings?

The minimum clearance required from vent terminals to combustion product openings for appliances utilizing forced draft venting is 12 inches. This clearance requirement is crucial for ensuring that combustion gases do not re-enter the appliance or surrounding areas, which could lead to safety hazards, including the risk of carbon monoxide exposure.

This distance helps facilitate the proper airflow and exhaust flow necessary for efficient operation of the appliances and contributes to the overall safety and reliability of the heating system. Adhering to this standard minimizes the risk of cross-contamination of combustion products and helps maintain a safe environment.

Understanding these clearance requirements is important for compliance with the North Carolina Mechanical Code, as they are established to promote safe installation practices and prevent dangerous conditions that can arise from improper venting.