WarmFlow 70/90 - Flue Installation Guidelines; Conventional and Balanced Flue

7.0 Air supply for combustion and ventilation
(see BS 5410)
7.1 Open Flue Boilers
When the boiler is sited in a cellar where the only access for combustion and ventilation
air is at high level then the combustion air should be ducted to low level.
Combustion Air Supply
Boiler in Room
7.2 Balanced Flue Boilers
Air Supply for Ventilation
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