This new heat pump from the CIAT group has the special feature of being able to adapt the quantities of energy supplied to suit demand exactly, thanks to the use of a new, variable-power compressor. It uses 30% less electricity and is 35% more compact than conventional machines. AQUACIAT GRAND INVERTER is designed for service applications providing medium and high power levels, from 40 kW up.
The Inverter is a new technology that adapts the heat pump power output to suit the actual thermal requirements of the installation, by adjusting the compressor motor speed. Traditional machines function solely in on/off mode, and they stop, for example, once the desired temperature has been reached, whereas inverter machines simply reduce the compressor speed to its minimum level. The compressor power output can vary continuously from 30 to 100% of its capacity. AQUACIAT GRAND INVERTER uses a spiro-orbital compressor that features a variable speed electric motor with an electronic governor.
AQUACIAT GRAND INVERTER cuts energy bills by using 30% less energy than conventional models with equivalent power ratings.
Firstly, the compressor does not go through a stop-start cycle; it runs constantly, but at controlled variable speeds. This point is very important, as most of the electric power consumed is used during the start phase. AQUACIAT GRAND INVERTER has a progressive electronic starting system known as a “Soft Starter”, which limits the inrush current. Contrary to a traditional machine, the starting current is lower than the nominal current under full load.
Secondly, AQUACIAT GRAND INVERTER constantly optimizes energy efficiency, whereas with a conventional unit, for over 95% of the operating time, the installation’s requirements are in fact lower than the nominal capacity.
Lastly, AQUACIAT GRAND INVERTER is also fitted as standard with an electronic pressure reducer that enables the refrigerating system to adjust continuously to suit the compressor capacity. The amplitude of the oscillations between low pressure, high pressure and water temperature regulation is thus reduced by two-thirds.
Furthermore, because it operates with water (the most efficient heat transfer fluid), the Inverter is an ecological alternative as compared with direct expansion systems using refrigerants. Thanks to its characteristics, it complies easily with overall environmental reflections such as HEQ.
Moreover, AQUACIAT GRAND INVERTER is especially compact. At equivalent power rating levels, it takes up 35% less floor space. This is because with a variable power system, only one compressor and fan unit is needed, instead of the two normally required otherwise. The continuous water heating or cooling system also avoids the need for the buffer tank used on conventional units.
95% of the time, conventional installations operate under partial loads, whereas their fan units run in on/off mode. This leads to high noise nuisance levels, even under minimum loads. In the case of the AQUACIAT GRAND INVERTER heat pump, the fan is also of the inverter type, and it supplies only the airflow required. Its noise level is just 43 dB(A) at 10 metres. In the case of layouts with stringent requirements in terms of noise nuisance, this type of fan unit can also be connected to a duct, thus enabling installation of the AQUACIAT GRAND INVERTER unit inside technical cubicles.
AQUACIAT GRAND INVERTER is also set apart by its low maintenance costs. Firstly, the linear operation of the compressor, without repeated stop/start cycles, reduces the mechanical stress levels to which it is submitted and optimizes the service life of its sub-modules. Secondly, as there is only one compressor/fan unit instead of two, the risks of breakdowns are reduced. Lastly, with water as the heat transfer fluid in the system, maintenance operations are easier to manage.
In winter, AQUACIAT GRAND INVERTER can produce hot water at 55°C under outdoor temperatures as low as -20°C. |
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