HXA

This series of air-water heat pumps satisfies the heating, cooling and domestic hot water production requirements of residential plants of small and medium size.

All the units are suitable for outdoor installation and can be applied to fan coil plants, radiant floor plants and high efficiency radiators plants.

The control system allows to manage not only the refrigerant circuit but the whole plant with the possibility to choose different solutions both for the heating and cooling plant and for the domestic hot water management. The possibility of solar panels or other heating sources integration is also available.

The heating function optimizes the flow water temperature according both to the ambient temperature and to the outdoor temperature through climatic curves adaptable to the building features. It's possible to manage a storage tank and two independent circuits (a direct one and a mixed one).The domestic hot water management allows to control the three way valve, the storage tank and the anti-legionella cycles (if necessary).

The cooling function can be realized through "active cooling" (refrigerant circuit inversion).

When the unit is used in radiant floor plants, to avoid condensate generation, a room humidity sensor can be installed.

The internal programmer clock allows to define different daily switching programs for heating, cooling and domestic hot water production.

The refrigerant circuit, contained in a box repaired from the air flow to simplify the maintenance operations, is equipped with rotary or scroll compressor (according to the model) mounted on damper supports, brazed plate heat exchangers, thermostatic expansion valve, reverse cycle valve, axial fans with safety protection grilles, finned coil realized with copper pipes and aluminium fins. The circuit is protected by high and low pressure switches and differential pressure switch on the plate heat exchanger. The plate heat exchanger and all the hydraulic pipes are thermally insulated in order to avoid condensate generation and reduce thermal losses.

All three-phase power supply units are provided with a phase sequence and correct sequence controller device.

All the units are supplied with an outdoor temperature sensor in order to realize the climatic control. All the units are accurately built and individually tested in the factory. Only electric and hydraulic connections are required for installation