Technical Booklet L Combustion Appliances and Fuel Storage Systems·Page 70·5.9-5.10
Protection of flue outlets
Flue outlets must be guarded where people could contact them or they could be damaged. Outlets in vulnerable positions such as within reach of ground, balconies, verandas, or windows should be designed to prevent obstruction of flow.
5.9 A flue outlet should be protected by a guard where –
(a) a person could easily come into contact with it; or
(b) it could be damaged.
5.10 If a flue outlet is in a vulnerable position, such as where the flue discharges at a point within reach of the ground, a balcony, a veranda or window, it should be designed to prevent the entry of any matter that could obstruct the flow.
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