Gas Fitter Practice · Question
Which of the following is considered a Category II gas appliance?
Category II appliances are characterized by negative vent pressure during operation and condensation within the vent.
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Question: Which of the following is considered a Category II gas appliance?
Answer options: ✅ An appliance that operates with a non-positive vent pressure and a flue gas dew point above 140°F (60°C).
- An appliance that operates with a positive vent pressure and a flue gas dew point below 140°F (60°C).
- An appliance that operates with a non-positive vent pressure and a flue gas dew point below 140°F (60°C).
- An appliance that operates with a positive vent pressure and a flue gas dew point above 140°F (60°C).
Correct answer: An appliance that operates with a non-positive vent pressure and a flue gas dew point above 140°F (60°C).
Explanation: Category II appliances are characterized by negative vent pressure during operation and condensation within the vent.
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