RM SPB - 704 G Notice D'installation Et D'emploi page 7

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CHIMNEY DESIGN FOR AN APPLIANCE –TYPE A
NATURAL EXTRACTION FORCED EXTRACTION
Outlet hood with natural extraction (A). Flue gas provides a natural chimney draft.
Outlet hood without natural extraction. Flue gas is secured by a fan (D) (forced extraction). In this
case, it is necessary to secure the connection with a gas feeder (B) to turn off the gas supply in case
of failure.