Source google image: https://upload.wikimedia.org/wikipedia/commons/thumb/3/3f/Sch%C3%A9ma_de_principe_d%27une_chaufferie_bois.jpg/440px-Sch%C3%A9ma_de_principe_d%27une_chaufferie_bois.jpg
Chauffage chaudiere bois
Source google image: https://upload.wikimedia.org/wikipedia/commons/thumb/3/3f/Sch%C3%A9ma_de_principe_d%27une_chaufferie_bois.jpg/440px-Sch%C3%A9ma_de_principe_d%27une_chaufferie_bois.jpg