- Appliances that are connected to common venting systems shall be located on the same floor of the dwelling.Exception: Engineered systems as provided for in Section G2427.
- Inlets to common venting systems shall be offset such that no portion of an inlet is opposite another inlet.
- Connectors serving appliances operating under a natural draft shall not be connected to any portion of a mechanical draft system operating under positive pressure.
- Type L vent material for oil appliances shall be installed with not less than listed and labeled clearances to combustible material.
- Single-wall metal pipe shall be guarded by a ventilated metal thimble not less than 4 inches (102 mm) larger in diameter than the vent connector. Not less than 6 inches (152 mm) of clearance shall be maintained between the thimble and combustibles.
|TYPE OF CONNECTOR||MINIMUM
|Single-wall metal pipe connectors:|
|Type L vent piping connectors:|
- The vent terminal shall be located not less than 3 feet (914 mm) above a forced air inlet located within 10 feet (3048 mm).
- The vent terminal shall be located not less than 4 feet (1219 mm) below, 4 feet (1219 mm) horizontally from, or 1 foot (305 mm) above any door, window or gravity air inlet into a dwelling.
- The vent termination point shall be located not closer than 3 feet (914 mm) to an interior corner formed by two walls perpendicular to each other.
- The bottom of the vent terminal shall be located not less than 12 inches (305 mm) above finished ground level.
- The vent termination shall not be mounted directly above or within 3 feet (914 mm) horizontally of an oil tank vent or gas meter.
- Power exhauster terminations shall be located not less than 10 feet (3048 mm) from lot lines and adjacent buildings.
- The discharge shall be directed away from the building.