HITZE CUBO 700, Operation And Installation Manual, Page: 14 / 30

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Fig. 4. The scheme of connection of the insert to the chimney duct
5.4 Ventilation of the insert:

the cassette extracts the air needed for combustion from the room in which it is installed (too little fresh
air will cause bad combustion and there may be a risk of carbon monoxide poisoning - carbon monox-ide is
produced);

the room where the cassette is to be installed must have ventilation openings;

it is estimated that about 8m³ of air is required for burning 1kg of wood;

in the case of using a system of distributing air to other rooms, it is essential to ensure the return of cooled
air to the room where the insert is installed so that the air can circulate freely (otherwise, the work cycle of
the insert may become disrupted, which will hinder the distribution of warm air).
Fig. 5. Break off elements when assembling the cassette without external air supply.