Fuel-burning appliances shall be vented to the outdoors in accordance with their listing and label and manufacturer’s installation instructions except appliances listed and labeled for unvented use. Venting systems shall consist of approved chimneys or vents, or venting assemblies that are integral parts of labeled appliances. Gas-fired appliances shall be vented in accordance with Chapter 24.
This section should not be construed as permitting the installation of portable unvented heaters in locations otherwise prohibited by Section 3701.82 of the Revised Code or rules adopted by the state fire marshal pursuant to Section 3701.82 of the Revised Code.
Exception: Engineered systems as provided for in Section 2427.
Connectors for oil and solid-fuel-burning appliances shall be constructed of factory-built chimney material, Type L vent material or single-wall metal pipe having resistance to corrosion and heat and thickness not less than that of galvanized steel as specified in Table 1803.2.
THICKNESS FOR SINGLE-WALL METAL PIPE CONNECTORS
METAL GAGE NUMBER
|Less than 6||26||0.019|
|6 to 10||24||0.024|
|Over 10 through 16||22||0.029|
A chimney connector or vent connector shall not pass through any floor or ceiling. A chimney connector or vent connector shall not pass through a wall or partition unless the connector is listed and labeled for wall pass-through, or is routed through a device listed and labeled for wall pass-through and is installed in accordance with the conditions of its listing and label. Connectors for oil-fired appliances listed and labeled for Type L vents, passing through walls or partitions shall be in accordance with the following:
2. 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. A minimum 6 inches (152 mm) of clearance shall be maintained between the thimble and combustibles.
|TYPE OF CONNECTOR||MINIMUM |
|Single-wall metal pipe connectors:|
|Oil and solid-fuel appliances||18|
|Oil appliances listed for use with Type L vents||9|
|Type L vent piping connectors:|
|Oil and solid-fuel appliances||9|
|Oil appliances listed for use with Type L vents||3b|
VENT SELECTION CHART
|VENT TYPES||APPLIANCE TYPES|
|Type L oil vents||Oil-burning appliances listed and labeled for venting with Type L vents|
|Pellet vents||Pellet fuel-burning appliances listed and labeled for use with pellet vents|
7. The discharge shall be directed away from the building.
The effective area of a natural draft chimney flue for one appliance shall be not less than the area of the connector to the appliance. The area of chimney flues connected to more than one appliance shall be not less than the area of the largest connector plus 50 percent of the areas of additional chimney connectors.