Technical Booklet L Combustion Appliances and Fuel Storage Systems·Page 45·Table 3.4

Minimum performance designations for chimney and flue pipe components for solid fuel fired appliances

Table 3.4 specifies minimum performance designations required for different chimney and flue pipe components based on appliance type and fuel type.

dwelling non-domestic combustion chimney solid-fuel

Table 3.4 Minimum performance designations for chimney and flue pipe components for use with new solid fuel fired appliances Appliance type | Minimum designation | Fuel type All solid fuel appliance | Masonry or flue block flue with liner to T400 N2 D3 Gxx | Coal, smokeless fuel, peat, wood and other biomass Clay flue blocks FB1N2 | — Clay/ceramic liners B1N2 | — Concrete liners B2 | — Factory-made metal chimneys to T400 N2 D3 Gxx | See paragraph 2.21 to 2.24 and 2.34(a)

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