803.10.6 Clearances.
MC § 803.10.6
Connectors shall have a minimum clearance to combustibles in accordance with Table 803.10.6. The clearances specified in Table 803.10.6 apply, except where the listing and labeling of an appliance specifies a different clearance, in which case the labeled clearance shall apply. The clearance to combustibles for connectors shall be reduced only in accordance with Section 308 or via the use of a listed chimney or vent connector system. Table 803.10.6Connector Clearances to Combustibles Type of Appliance Minimum Clearance (inches)Type of Appliance Minimum Clearance (inches)Domestic-type appliances Chimney and vent connectors Electric and oil incinerators18 Oil and solid fuel-burning appliances18 Oil appliances labeled for venting with Type L vents9 Commercial, industrial-type appliances Low-heat appliancesChimney connectors Oil and solid fuel boilers, furnaces and water heaters18 Oil unit heaters18 Other low-heat industrial appliances18 Medium-heat appliancesChimney connectors All oil and solid fuel-burning appliances36 High-heat appliancesMasonry or metal connectors All oil and solid fuel-burning appliancesIn accordance withNFPA 211 For SI: 1 inch = 25.4 mm.
