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1.6. WARNINGS DECLARED CONDITIONS OF USE
DANGER!
The machine has been designed and constructed solely and exclusively to function as a water-cooled water chiller; any other use is
expressly PROHIBITED.
Installing the machine in an explosive environment is prohibited.
DANGER!
The machine is designed for indoor installation. Segregate the unit if installed in areas accessible to persons under 14 years of age.
IMPORTANT!
The correct operation of the unit is subject to the scrupulous observance of the instructions for use, compliance with the technical
spaces in the installation and the limits of use reported in this manual.
1.7. ADAPTIVE FUNCTION PLUS
Reliable, versatile and low energy consumption chillers
Objectives
To always guarantee optimal unit operation in the system in which it is installed. Evolved adaptive logic.
To achieve the best performance from a chiller and a heat pump in terms of energy efficiency with full and partial loads. Low consumption chillers.
Operating logic
In general, the actual control logics on chillers/heat pumps do not consider the features of the system in which the units are installed; they usually control
the return water temperature and there aim is to guarantee the operation of the chillers, giving less priority to the system requirements.
The new AdaptiveFunction Plus adaptive logic contrasts these logics with the objective of optimising chiller operation according to the system characteris-
tics and the actual thermal load. The controller regulates the flow water temperature and adjusts itself according to the operating conditions using:
the information contained in the return and flow water temperature to estimate the load conditions, thanks to a particular mathematical function;
a special adaptive algorithm that uses this estimate to vary the values and the start-up and switch-off limit values of the compressors; the optimised
compressor start-up management guarantees a precision water supply to the user, reducing the fluctuation around the set-point value.
Main functions
Efficiency or Precision
Thanks to the advanced control, the chiller can run on two different regulation settings in order to obtain the best possible performance in terms of energy
efficiency and significant seasonal savings or high water temperature precision:
1. Low consumption chillers: "Economy" Option It is known that chillers work at full load for only a very small percentage of their operating time and
at partial load for most of the season. Therefore, the power they must supply generally differs from the nominal design power, and partial load opera-
tion significantly affects seasonal energy performance and consumption. This makes it necessary for the unit to run as efficiently as possible with
partial loads. The controller therefore ensures that the water flow temperature is as high as possible (when operating as a chiller) or as low as possi-
ble (when operating as a heat pump) whilst being compatible with the thermal loads, which means it shifts, unlike traditional systems. This prevents
energy waste associated with the unnecessarily onerous chiller temperature levels being maintained, thereby guaranteeing that the ratio between the
power to be supplied and the energy to be used to produce it is always optimised. The right level of comfort is finally available to everyone!
2. High precision: "Precision" option With this operating method, the unit works at a fixed set-point. Therefore, the "Precision" option guarantees
precision and reliability in all applications that require a controller that guarantees a more accurate constant water supply temperature, and where
particular humidity control is required. However, it is always recommended to use a storage tank with greater system water content in process appli-
cations to guarantee high system thermal inertia.
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