Gas Fitter Practice · Question
What gas analysis result indicates a potentially dangerous condition due to insufficient combustion air?
The presence of carbon monoxide (CO) is a direct indicator of incomplete combustion, usually due to insufficient combustion air or improper venting.
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Question: What gas analysis result indicates a potentially dangerous condition due to insufficient combustion air?
Answer options:
- High CO2, low O2
- Low CO2, high O2 ✅ Presence of CO
- High NOx levels
Correct answer: Presence of CO
Explanation: The presence of carbon monoxide (CO) is a direct indicator of incomplete combustion, usually due to insufficient combustion air or improper venting.
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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?
- What is the maximum allowed pressure drop for gas piping within a building, from the point of delivery to the
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