NATE Gas Heating Practice Exam

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Prepare for the NATE Gas Heating Exam with interactive questions, hints, and detailed explanations. Boost your confidence and get exam-ready!

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What is a common type of ignition system that does not use a pilot light?

Intermittent pilot systems
Direct spark ignition systems
Glow coil ignition systems
Standing pilot ignition systems

The correct answer is: Direct spark ignition systems

The correct choice is based on understanding the various types of ignition systems used in gas heating appliances. Direct spark ignition systems are designed to ignite the gas directly using an electrical spark without the need for a continuously burning pilot light. In this type of system, when there is a call for heat, an electrical current is sent to an ignition electrode, producing a spark that ignites the gas. This approach offers several advantages, including increased efficiency and reduced standby energy consumption, as there is no pilot light that needs to remain lit at all times. The other ignition systems, such as the intermittent pilot systems and standing pilot ignition systems, utilize a pilot light to ignite the main burner gas. Glow coil ignition systems also rely on a heating element that must be lit to initiate combustion. Therefore, these options do not meet the criteria of not having a pilot light, making direct spark ignition systems the clear choice.