Gas Fitter Practice · Question
Which of the following is a characteristic of a balanced flue appliance?
Balanced flue appliances are direct-vent, using a sealed system to bring in combustion air and exhaust flue gases directly outside, not affecting indoor air qua
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Question: Which of the following is a characteristic of a balanced flue appliance?
Answer options:
- It draws combustion air from the conditioned space.
- It uses a chimney for venting. ✅ It draws combustion air from outdoors and vents combustion products outdoors through a concentric pipe.
- It requires a separate mechanical vent fan.
Correct answer: It draws combustion air from outdoors and vents combustion products outdoors through a concentric pipe.
Explanation: Balanced flue appliances are direct-vent, using a sealed system to bring in combustion air and exhaust flue gases directly outside, not affecting indoor air quality.
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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
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