HSW

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 both for outdoor or indoor 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. During cooling mode operation a part of the heating power in excess can be recovered for the domestic hot water production (VD version).

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 compressor mounted on damper supports, brazed plate heat exchangers, electronic expansion valve, reverse cycle valve, centrifugal fan (plug fan), finned coil realized with copper pipes and aluminium fins. The circuit is protected by high and low pressure switches and flow switches 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.

The plug fan with electronic control of the rotational speed guarantees high efficien­cies and low noise in all the operating conditions and allows to install the unit both outdoor (with protection caps) or in­door (with ducted air inlet and outlet).

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