Gas Fitter Practice · Question
When performing a combustion analysis, what does a high level of excess air indicate?
Excessively high levels of excess air can overcool the flue gases, leading to reduced stack temperature and potential condensation within the vent system.
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Question: When performing a combustion analysis, what does a high level of excess air indicate?
Answer options:
- Potential for flame impingement and CO production.
- Optimal combustion efficiency. ✅ Reduced stack temperature and potential condensation.
- Insufficient draft in the vent system.
Correct answer: Reduced stack temperature and potential condensation.
Explanation: Excessively high levels of excess air can overcool the flue gases, leading to reduced stack temperature and potential condensation within the vent system.
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