What height must an oil fired appliance be in a parking garage?

An oil-fired appliance in a parking garage must be at least 18 inches off the floor. This requirement is primarily in place to mitigate the risks associated with the potential presence of flammable vapors or liquids in the garage environment. Elevating the appliance helps ensure that it is less vulnerable to accidental spills or flooding, which can occur in such settings. It also aids in maintaining proper airflow and ventilation around the appliance, which is crucial for safe operation. Therefore, the specification of 18 inches is designed to enhance safety and compliance with fire codes and insurance regulations that govern the use of heating appliances in commercial settings like parking garages.