What is the typical function of a stack in a boiler system?

In a boiler system, the primary function of a stack is to vent combustion gases outside. After the combustion process occurs within the boiler, harmful gases and excess heat must be expelled from the system to ensure safe operation and compliance with environmental regulations. The stack provides an appropriate pathway for these gases to exit the boiler, allowing fresh air to intake and maintaining the necessary airflow for efficient combustion.

Ensuring that combustion gases are vented properly is crucial for preventing the buildup of noxious fumes within the boiler room, which can pose safety hazards for personnel and lead to equipment malfunction or damage. Additionally, a well-designed stack can aid in optimizing draft for improved efficiency, ultimately contributing to the overall effectiveness of the boiler system.