Mechanical appliances, fireplaces, solid fuel-burning appliances, cooking appliances and water heating appliances shall be properly installed and maintained in a safe working condition, and shall be capable of performing the intended function.
Installation, maintenance, and inspection of these appliances shall be in accordance with the manufacturer's recommendations. If manufacturer's recommendations are not available, the installation and/or maintenance will be in accordance with the International Residential Code, International Mechanical Code, International Fuel Gas Code, and/or the appropriate NFPA standard for the specific use and appliance as approved by the code official.
Fuel-burning equipment and appliances shall be connected to an approved chimney or vent.
Exception: Fuel-burning equipment and appliances that are labeled for unvented operation.
A supply of air for complete combustion of the fuel and for ventilation of the space containing the fuel-burning equipment shall be provided for the fuel-burning equipment.
Devices intended to reduce fuel consumption by attachment to a fuel-burning appliance, to the fuel supply line thereto, or to the vent outlet or vent piping therefrom, shall not be installed unless labeled for such purpose and the installation is specifically approved.