Final answer:
Combustion air ducts terminating in an attic must always ventilate to the outside and follow manufacturers' instructions to ensure safe and proper operation.
Step-by-step explanation:
It is essential to adhere to safety regulations when dealing with combustion air ducts that terminate in an attic. According to building codes and safety standards, such ducts must:
- Always ventilate to the outside to ensure that the combustion byproducts do not accumulate in the attic or living spaces, which could lead to health hazards or fire risks.
- Follow manufacturers' instructions meticulously to ensure proper installation and operation of the combustion appliance, as improper setup can lead to dangerous conditions.
Ensuring that combustion air ducts are correctly installed and maintain a clear path for ventilation is crucial for the safety and well-being of the occupants in the building.