G2 Gas Fitter Practice Exam

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What is the primary purpose of flue gas analysis?

To check for efficiency of insulation
To ensure safety and efficiency of operation
To measure gas pressure
To assess appliance age

The correct answer is: To ensure safety and efficiency of operation

The primary purpose of flue gas analysis is to ensure safety and efficiency of operation. This process involves measuring the composition and quantity of gases emitted from combustion appliances. By analyzing flue gases, a technician can determine if the appliance is burning fuel efficiently, indicated by the appropriate levels of oxygen and carbon dioxide, and if there are harmful gases like carbon monoxide present. Ensuring that appliances operate safely means they are emitting acceptable levels of pollutants and functioning within their designed parameters, which is crucial for both safety and performance. While assessing insulation efficiency, measuring gas pressure, and determining appliance age may be important aspects of overall appliance maintenance, they do not specifically pertain to the analysis of flue gases. Flue gas analysis is directly linked to performance metrics that affect both the environmental impact and the health of occupants in a space.