Gas Fitter Practice · Question
Which component in a conventional atmospheric gas furnace is responsible for proving the presence of a pilot flame?
A thermocouple or thermopile generates a small electrical voltage when heated by the pilot flame, signaling the control board that the pilot is lit and safe to
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Question: Which component in a conventional atmospheric gas furnace is responsible for proving the presence of a pilot flame?
Answer options:
- Limit switch ✅ Thermocouple or thermopile
- Pressure switch
- Rollout switch
Correct answer: Thermocouple or thermopile
Explanation: A thermocouple or thermopile generates a small electrical voltage when heated by the pilot flame, signaling the control board that the pilot is lit and safe to operate.
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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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