How far must burners and ignition be located above the floor in a garage installation of a gas furnace?

In the installation of a gas furnace within a garage, it is crucial to adhere to safety regulations regarding the location of burners and ignition systems. The correct requirement is that burners and ignition must be located at least 18 inches above the floor. This height is specified to mitigate the risk associated with any potential accumulation of flammable vapors that can occur in a garage setting, which typically houses vehicles and may have other combustible materials present.

By elevating the burners and ignition at least 18 inches off the ground, the risk of ignition from vapors released by gasoline or other flammable materials is significantly reduced. The National Fuel Gas Code and various manufacturers often incorporate this standard to ensure the safety and reliability of gas-burning appliances in residential areas where such risks could be present.

Understanding these height requirements is essential for HVAC professionals to ensure compliance with safety regulations, thereby protecting both property and occupants from fire hazards.