G2 Gas Fitter Practice Exam

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Prepare for the G2 Gas Fitter Test. Study using flashcards and multiple choice questions, with hints and detailed explanations for each question. Ensure your success!

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What should be done if the heat exchanger of an appliance installed in a dwelling unit is defective?

It can be repaired
It should be replaced
It should be monitored for further issues
It must be cleaned and serviced regularly

The correct answer is: It should be replaced

When dealing with a defective heat exchanger in an appliance, replacing it is the most appropriate course of action. Heat exchangers are crucial components that facilitate the transfer of heat between fluids, and a defect can compromise their functionality and efficiency. If a heat exchanger is found to be defective, it can lead to several issues, such as reduced heating performance, increased energy consumption, or even safety hazards like the risk of gas leaks or carbon monoxide poisoning. Replacing the defective heat exchanger ensures that the appliance operates safely and efficiently, restoring its intended functionality. Repairing a heat exchanger can sometimes be possible, but it often comes with the risk of not fully resolving the underlying issues, especially if the defect is extensive or impacts the integrity of the system. Monitoring the heat exchanger for further issues or merely cleaning and servicing it do not address the fundamental problem, leaving the appliance at risk of continued malfunction or potential safety hazards. Therefore, replacement is the most reliable and secure solution in the case of a defective heat exchanger.