KSR

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 split installation (indoor unit and outdoor unit connected through refrigerant pipes) 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 heat pump is composed by an indoor unit (condensing unit) containing the hydraulic circuit, the electrical board, the compressor and a part of the refrigerant circuit and an outdoor unit (remote evaporator).

The refrigerant circuit, contained in an extractable box to simplify the maintenance operations, is equipped with rotary compressor mounted on damper supports, brazed plate heat exchanger, thermostatic expansion valve and reverse cycle valve and liquid receiver.

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 to avoid condensate generation and to reduce thermal losses.

The outdoor structure of the indoor unit and the refrigerant circuit box are both thermally and acoustically insulated in order to create a double wall against sound propagation and to allow the installation in domestic places.

To avoid vibration propagation towards the hydraulic circuit the refrigerant circuit box is placed on damper supports and the connection pipes are flexible.

The outdoor unit is composed by finned coil made of copper pipes and aluminium louvered fins and axial fan with safety protection grilles. The fan, supplied with DC motor and electronic rotational speed control, guarantees high efficiency and low noise in all the operating conditions.

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, hydraulic and refrigerant (between indoor and outdoor units) connections are required for installation.