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Diagram 3.3 - Shield configuration for combustible material protection
Diagram 3.3NI-wide·Technical Booklet L Combustion Appliances and Fuel Storage Systems
shields should either: a) extend beyond the flue pipe by at least 1.5 x D; or b) make any path between flue pipes and combustible material at least 3 x D long air space of at least 12 mm between non-c
combustion-appliancesflue-systemsfire-safetysolid-fuelMinimum performance designations for chimney and flue pipe components for solid fuel fired appliances
Table 3.4NI-wide·Technical Booklet L Combustion Appliances and Fuel Storage Systems
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
dwellingnon-domesticcombustionchimneysolid-fuelProtective cage for large diameter natural draught open-flued appliances
4.19NI-wide·Technical Booklet L Combustion Appliances and Fuel Storage Systems
A flue serving a natural draught open-flued appliance, with a diameter greater than 170 mm, should be fitted with a protective cage designed for solid fuel use, having a mesh size not less than 6 mm a
combustion-appliancesflue-outletssolid-fuelnatural-draught