What should be done if flue gas readings indicate excessive carbon monoxide levels?

When flue gas readings indicate excessive carbon monoxide levels, it is crucial to take immediate action to ensure safety and efficiency. The presence of high carbon monoxide levels suggests incomplete combustion, which can occur due to a lack of sufficient air and may also indicate potential issues with the combustion system.

Increasing the air supply helps to improve the combustion process by providing more oxygen, which can facilitate complete combustion of the fuel. This adjustment may reduce carbon monoxide emissions and enhance overall system performance.

Reducing the fuel supply is another important corrective measure. By decreasing the amount of fuel being burned, you may mitigate the excessive carbon monoxide levels since there will be less fuel competing for oxygen in the combustion process. This reduction can help maintain a safer and more efficient operation.

Inspecting the heat exchanger is crucial as well, because any malfunction or blockage could impair airflow and contribute to incomplete combustion. Ensuring that the heat exchanger is functioning properly helps to maintain efficient heat transfer and can also contribute to better combustion conditions.

Given the nature of these actions, addressing excessive carbon monoxide levels involves a comprehensive approach that incorporates increasing air supply, reducing fuel supply, and inspecting the heat exchanger to ensure that all aspects of the combustion system are optimized for safety and efficiency.