What is ID in boiler?

ID in a boiler refers to the "induced draft" system, which is used to enhance combustion efficiency by creating a negative pressure in the combustion chamber. This system utilizes a fan or blower to draw flue gases out of the boiler and through the exhaust stack, ensuring proper airflow and preventing the escape of unburned fuel. By maintaining optimal draft conditions, an ID system helps improve fuel combustion and reduces emissions.