Gas Fitter Practice · Question
When performing a combustion analysis, what does a high percentage of excess air indicate?
While some excess air is necessary for complete combustion, too much excess air cools the flue gases and can lead to reduced efficiency and wasted energy by hea
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Question: When performing a combustion analysis, what does a high percentage of excess air indicate?
Answer options:
- Incomplete combustion
- Optimal fuel-to-air ratio
- Increased efficiency ✅ Potentially wasteful heating of unneeded air
Correct answer: Potentially wasteful heating of unneeded air
Explanation: While some excess air is necessary for complete combustion, too much excess air cools the flue gases and can lead to reduced efficiency and wasted energy by heating air that isn't contributing to combustion.
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- What is the maximum allowed pressure for a propane system supplying a residential appliance?
- When installing a gas outdoor appliance, what is the minimum required clearance from an opening into a buildin
- Which code specifies the requirements for the installation of propane-burning appliances and equipment?
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