What is the minimum clearance above grade for a furnace with 6" of the bottom compartment factory sealed?

Prepare for the Maine Gas Exam with our comprehensive quiz. Use flashcards and multiple choice questions, each featuring hints and explanations, to ace your test!

The minimum clearance above grade for a furnace with a factory-sealed bottom compartment is specifically set at 2 inches. This requirement ensures that there is adequate space for proper air circulation around the furnace, which is essential for efficient operation and safety. The clearance helps prevent overheating and allows for maintenance and inspections without obstruction.

In the context of gas systems, maintaining sufficient clearance is crucial to comply with safety regulations and to reduce the risk of fire hazards. A clearance of 2 inches provides a balance between safety and functional installation, ensuring that the furnace operates within the manufacturer's specifications while also reducing potential risks associated with inadequate ventilation or accessibility.

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