Arizona Plumbing Practice Exam

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Prepare for the Arizona Plumbing Exam with quizzes, flashcards, and multiple-choice questions; each with detailed explanations and helpful hints.

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What minimum height can a LP gas furnace be installed in a public garage?

1 foot above the garage door
2 feet above the garage door
3 feet above the garage door
4 feet above the garage door

The correct answer is: 1 foot above the garage door

The minimum height requirement for installing an LP gas furnace in a public garage is specified for safety reasons. By placing the furnace at least 1 foot above the garage door, the potential for gas accumulation in the event of a leak is mitigated. This elevation helps ensure that any propane gas, which is heavier than air, doesn't settle in the immediate vicinity of the furnace and is instead allowed to dissipate. This safety standard is particularly important in a public garage setting where vehicle emissions and other environmental factors could lead to harmful conditions. Higher placement, while advantageous in some contexts, is not mandated by the regulations, making the 1-foot clearance not only sufficient, but also compliant with established safety protocols for residential and commercial installations involving LP gas appliances.