Gas Fitter Practice Test

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Prepare effectively for the Gas Fitter Exam with our comprehensive study materials. Access multiple-choice questions, detailed explanations, and hints that will help you achieve success in your certification. Get ready to demonstrate your knowledge and skills!

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What type of water heater relies on oil-fired water heating in combination systems?

Direct vent heater
Storage-type heater
On-demand heater
Tankless heater

The correct answer is: Storage-type heater

The correct response highlights that a storage-type heater is designed to accumulate and maintain a large volume of water, which is then heated using an oil-fired system in a combination setup. This type of heater works by storing hot water until it is needed, ensuring that there is a readily available supply for domestic use. In combination systems, the oil-fired component can efficiently heat the water in the storage tank, allowing for a reliable source of hot water. These heaters are particularly useful in situations where higher water demand is anticipated, making them a popular choice for residential and certain commercial applications. Contrastingly, direct vent heaters, on-demand heaters, and tankless heaters do not primarily function in tandem with an oil-fired system for heating water. Direct vent heaters often utilize gas rather than oil, while on-demand and tankless systems heat water instantaneously rather than storing it. Therefore, the characteristic operation of storage-type heaters in using oil-fired heating systems in combination systems properly identifies them as the correct choice for this question.