18-28-801.7 Solid fuel appliance flues.

   The cross-sectional area of a flue serving a solid fuel-burning appliance shall not be greater than three times the cross-sectional area of the appliance flue collar or flue outlet.

18-28-801.8 Abandoned inlet openings.

   Abandoned inlet openings in chimneys and vents shall be closed by an approved method.

18-28-801.9 Positive pressure.

   If an appliance equipped with a forced or induced draft system creates a positive pressure in the venting system, the venting system shall be designed for positive pressure applications.

18-28-801.10 Connection to fireplace.

   Connection of appliances to chimney flues serving fireplaces shall be in accordance with Sections 18-28-801.10.1 through 18-28-801.10.3.

18-28-801.10.1 Closure and access.

   A noncombustible seal shall be provided below the point of connection to prevent entry of room air into the flue. Means shall be provided for access to the flue for inspection and cleaning.

18-28-801.10.2 Connection to factory-built fireplace flue.

   An appliance shall not be connected to a flue serving a factory-built fireplace unless the appliance is specifically listed for such installation. The connection shall be made in accordance with the appliance manufacturer's installation instructions.