Gas Fitter Practice · Question
Which component is used to prevent flame rollout on an atmospheric gas furnace?
A rollout switch is a safety device that detects flames exiting the heat exchanger and shuts down the furnace.
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Question: Which component is used to prevent flame rollout on an atmospheric gas furnace?
Answer options:
- Pressure switch ✅ Rollout switch
- Limit switch
- Thermocouple
Correct answer: Rollout switch
Explanation: A rollout switch is a safety device that detects flames exiting the heat exchanger and shuts down the furnace.
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