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We reserve the right to make changes without any prior notice.
Translation from original instructions
4.7.6 Air filters
The units are equipped with air filters on the recirculation line with varying degrees of efficiency. The filter change must
always take place from the front of the unit.
The filters of the direct expansion units have the same overall size of the evaporator coils, whether they are UNDER or
OVER.
In water chilled units the filters are located on the top (UNDER unit) or behind the front panels (OVER units). In any case
refer to the dimensional drawings.
The drawings below show the way to extract the air filters according to the type of unit.
Fig. 5 Extracting the air filters
4.7.7 Humidifier
The units can be equipped with an immersed electrode humidifier according to the model version. Before use, make sure
all electrical and hydraulic connections have been made.
The humidifier is automatically controlled by the microprocessor, which regulates the amount of water present inside the
boiler, according to specific algorithms and according to the request for moisture production. For further details concerning
the operation of the humidifier, refer to the humidifier and microprocessor manuals.
Should it be necessary to carry out maintenance or replace the humidifier components, first empty the water contained in
the cylinder.
In order to ensure a correct operation and life of the humidifier cylinders, the characteristics of the feed water should be
within the limits provided. The limits are reported in the specific manual.
Do not treat with softeners.
The use of well, industrial water or drawn from cooling circuits, potentially chemically or bacteriologically polluted, is forbid-
den. We do not recommend the addition of disinfectants or anticorrosive compounds, as they are potential irritants.
Any particular characteristics of the water supply, such as very low or very high conductivity, may require specific humidifier
cylinders which differ from the standard, to be agreed upon with the manufacturer.
