Gas Fitter Practice · Question
What type of vent system uses a mechanical fan to push combustion products through the vent pipe, often allowing for horizontal runs?
Category III venting uses a mechanical fan to positively pressure vent combustion products, enabling longer horizontal runs and specific materials.
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Question: What type of vent system uses a mechanical fan to push combustion products through the vent pipe, often allowing for horizontal runs?
Answer options: ✅ Category III
- Category I
- Category II
- Category IV
Correct answer: Category III
Explanation: Category III venting uses a mechanical fan to positively pressure vent combustion products, enabling longer horizontal runs and specific materials.
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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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