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Section M1402 Central Furnaces
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M1402.1 General
M1402.2 Clearances
Clearances shall be provided in accordance with the listing and the manufacturer's installation instructions.
M1402.3 Combustion Air
Combustion air shall be supplied in accordance with Chapter 17. Combustion air openings shall be unobstructed for a distance of not less than 6 inches (152 mm) in front of the openings.
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