Forced Ventilation - ALFA GIOTTO Manual Del Usario

1.2 Forced ventilation

Forced ventilation can be obtained with systems equipped with electric fans.
The actual flow rate must be not less than 1,72 m³/h per kW.
The air velocity near the installation must not disturb the operators and must have specifically the following
characteristics:
- The air velocity next to the exhaust hood must be between 0,25 m/s and 0,5 m/s.
- The make-up air velocity must be less than or equal to 0,15 m/s up to 2 metres from the walking surface.
The vents for the air flow in the premises, facing outwards, must have the following characteristics:
a) To be conveniently located so as not to create a short circuit in the air flow
b) To be protected by grilles.
c) For LPG installations, at least 1/5 of the natural ventilation surface, with a minimum of 100 cm2, must be
coming from the floor.
2. AERATION
The required aeration may be obtained through the implementation of one of the systems described in the
following paragraphs.
2.1 Forced aeration systems
The hourly flow rate of the system must be at least 1,72 m³/h per kW referred to the total rated thermal output of
the installation without compromising the possibility of supplying some fresh air in the room for other purposes
not exclusively related to the safety of the appliance using gaseous fuels. The gas supply must be directed to the
equipment and must be stopped in the event that the air flow rate should fall below the value specified above. In
this case, the gas distribution should be allowed only manually.
2.2 Natural aeration systems
2.2.1 Total rated thermal output not exceeding 15 kW
Through permanent openings facing outwards in the room where the devices are installed. The net area of the
openings or the cross-section must be not less than 100 cm2.
2.2.2 Total rated thermal output not exceeding 35 kW
Through exhaust hoods connected to the flue or duct with natural draft according to the UNI EN 13 384
guidelines.
INSTALLATION WITH BASE
To install the oven with the base follow as described above, follow the instructions on page 4 for mounting the
base (supplied separately).
EN
INSTALLATION
WITH BASE
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