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5.5.2. CONNECTION TO OUTSIDE AIR INTAKE
The unit must have the necessary combustion air to ensure regular operation through outside air
intakes. The intake must be as follows:
▪ by means of a wall air inlet prepared near the unit, communicating with the outside (minimum free surface area
of 100 cm²) suitably positioned so as not to be obstructed, and protected externally by a grille;
▪ connection directly to the outside with a pipe having an internal diameter of 50 mm and a
maximum length of 1.5 m suitably protected at the end by suitable protection.
▪ through the room adjacent to that of installation provided the air flow is free to pass through permanent
openings communicating with the outside, which meet the requirements described in par. "Installation".
The adjacent room must not be put in a negative pressure with respect to the
external environment due to the draft induced by the presence of other possible
appliances or suction devices. The adjacent room cannot be used as a garage,
warehouse of combustible material and certainly not for activities with fire hazard.
* In case of combustion air ducting for non-sealed products, check that the installation room is not in
a negative pressure by more than 4 Pa with respect to the outside, otherwise provide for an additional
air inlet in the room.
The inlet connection or air intake of the unit is located at the back and has a round section with diameter
50 mm. For this reason, a flow of clean air, free of polluting elements, must be ensured for regular
combustion at maximum output without any impediment or obstruction of the flow section.
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A73023860 - Rev 01 - 06/2023
ELDA - CORONA
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