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Translation from original instructions
4.3 Control and safety devices
The unit is integrally managed by an electronic microprocessor control that, through the various temperature and pressure
sensors installed in the unit, keeps its operation within the safety limits.
All the parameters involved with control of the unit are shown in the “Control Manual” that is an integral part of the docu-
mentation of the unit.
The manual fully describes the logic with which the checks of the unit take place during the various operating stages.
The devices are shown in the technical booklet.
4.4 Principles of operation
These units are precision air conditioners that provide safe working conditions for Data Centres, computer rooms and other
technological applications where a highly sensitive heat discharge and a precise temperature and humidity check are re-
quired. The parameters controlled are temperature, humidity and air quality according to the degree of filtration. Moreover,
these units are used in installations where an uninterrupted service must be guaranteed and are therefore equipped with
redundancy features.
4.5 Structure
The cabinet is made with sandwich panels of galvanized steel sheet and coated with epoxy. The panels are internally insu-
lated with glass wool, to obtain fire insulation class A1 in accordance with EN13501. This type of panel allows good thermal
and acoustic insulation.
Air tightness is achieved with adhesive sealing strips placed all around the edges of the panels.
The uprights and infills are made of galvanized steel sheet.
The front panel closing the electrical control panel can be opened by a handle for an easy inspection of the inside. Access to
all refrigerant and electrical components of the unit is from the front of the machine only; this solution makes it unnecessary
to carry out any work from the side and eliminates the obligation to consider “technical spaces” around the air conditioning
units. All the materials forming the body are recyclable and CFC-free.
4.6 Specifications
Direct expansion precision air conditioner with hermetic compressor and evaporator coil, and / or chilled water coil, radial
fans.
The direct expansion versions can be equipped with a water condenser integrated in the unit or connected to remote air
condensers.
