Gas Fitter Practice Test

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Prepare for your Gas Fitter Exam with our comprehensive quiz featuring flashcards and multiple-choice questions designed to enhance your understanding and readiness. Boost your confidence and performance on exam day!

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At what temperature does the blower fan turn off in a combination limit control?

  1. 100°F

  2. 200°F

  3. 130°F

  4. 127°F

The correct answer is: 100°F

For a combination limit control, the blower fan is typically designed to turn off at a specific temperature to prevent overheating in heating systems. The correct temperature for a blower fan to deactivate is 100°F. This threshold ensures that the system operates efficiently, protecting the furnace and other components from damage due to excessive heat. While other temperatures might be found in different HVAC systems, 100°F is a common standard for blower operation in combination limit controls, ensuring a safe margin before the air becomes overly hot. This assists in maintaining a balanced environment in the ductwork and helps to extend the life of the heating equipment. Understanding these settings is vital for anyone involved in gas fitting and furnace operation.

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