City Multi HVRF – the best of both worlds
Innovative and truly exemplary: the Hybrid City Multi system (HVRF) is the world’s first 2-pipe system to provide simultaneous cooling and heating with heat recovery, combining the strengths of a direct evaporation system and those of a chilled water system. This innovative solution stands out not only as a result of its high energy efficiency, individual comfort and low requirement for planning, installation and maintenance work, but also thanks to its reduced refrigerant volume in particular.
The HBC controller – the innovative centrepiece
As the centrepiece, the HBC controller connects the outdoor unit to the indoor units and enables the heat transfer between the refrigerant in the external circuit and the water in the internal circuit. The inverter-driven pumps are built in and pump the water to the last indoor unit located up to 90 metres away.
Plate heat exchangers
The energy exchange between the refrigerant and the water system takes place here. Each HBC controller generally features two sets of plate heat exchangers that feed hot water into the system in heating mode and supply cold water to the system in cooling mode. In the mixed mode, one heat exchanger assumes the cooling function while another takes on the heating function.
Two inverter-controlled pumps supply the cooled or heated water to the connected indoor units. The volume supplied by the pump depends on the actual heat and cooling demand.
The valve block ensures that each indoor unit is individually supplied with the necessary volume of hot or cold water.
Fit for the buildings of the future
Ideal for use in hotels, large office complexes and much more besides: having been specially developed to meet the requirements of modern building architecture with high demands in terms of efficiency and comfort, each individual indoor unit can be operated independently in heating or cooling mode. The heat recovery makes operation particularly efficient, with the heat that is drawn from the areas needing to be cooled ultimately being used to heat other locations.
The outdoor units in the R2 series (air-cooled) and WR2 series (water-cooled) stand out thanks to a large performance range, peak values in terms of energy efficiency and high operational reliability.
The Hybrid BC Controller links the outdoor unit to the indoor units and allows heat exchange between the refrigerant in the external circuit and the water in the internal circuit. The inverter-driven pumps are built in and pump the water to the last indoor unit at up to 90 metres away.
As there is a wide range of indoor units, the Hybrid City Multi system can be used to provide air conditioning in facilities of all kinds.
Hybrid BC Controller
The Hybrid BC Controller is the heart of the Hybrid City Multi system – the world's first 2‑conductor system that combines the advantages of a direct evaporation system with those of a water-based system. The Hybrid BC Controller features plate heat exchangers, in which the heat exchange between refrigerant and water takes place.
- Much lower refrigerant quantity
- Higher energy efficiency due to heat recovery
- Customised comfort thanks to simultaneous cooling and heating
- Low maintenance, reliable operation