AIR-COOLED LIQUID CHILLERS 30RBV 017-021 Environmental care
Non-ozone depleting R410A refrigerant - Chlorine-free refrigerant of the HFC group with zero ozone depletion potential - Very efﬁcient - gives an increased energy efﬁciency ratio (EER) Leak-tight refrigerant circuit - Brazed refrigerant connections for increased leaktightness - Veriﬁcation of pressure transducers and temperature sensors without transferring refrigerant charge Auto-adaptive control - Control algorithm prevents excessive compressor cycling and permits reduction of the water quantity in the hydronic circuit (Carrier patent) Exceptional endurance tests - Corrosion resistance tests in salt mist in the laboratory - Accelerated ageing test on components that are submitted to continuous operation: compressor piping, fan supports - Transport simulation test in the laboratory on a vibrating table.
State-of-the-art concept - Cooperation with specialist laboratories and use of limit simulation tools (ﬁnite element calculations) for the design of the critical components, e.g. motor supports, suction/discharge piping etc.
HEATING HEATING CONTROLS AIR TREATMENT
NHC control associate with compressor and fan variable frequency driver combines intelligence with operating simplicity. The control constantly monitors all machine parameters and precisely manages the operation of compressor, expansion devices, fans and of the water heat exchanger water pump for optimum energy efﬁciency. Ease-of-use - NHC control can be associated with a new User interface (WUI) which allow an easy access to the conﬁguration parameters (frequency compressor, refrigerant circuit temperature, sets points, air temp, entering water temp, alarm report…). changeover in case of a unit fault (need Master slave sensor in accessory). - Scheduling period Choice of control product - 3 options are available to drive the 30RBV 17-21: • Remote contact • User interface WUI • ModBus protocol
User Interface WUI
This user interface is also very intuitive in its use. It allows reading and easy selection of the operating mode. The functions are represented by icons on the LCD backlit screen. - To facilitate the use of this interface, 3 levels of access are available: end user, installer and factory. Key features - Heating and cooling mode - Domestic hot water - Master/slave control of 4 units operating in parallel with operating time equalisation and automatic
C A R R I E R 2 0 1 6 / 2 0 1 7
This interface can be installed up to 50 m away. It is connected to the NHC board with a 4 wires cable. - 2 installation possibilities: • Inside the room (with remote interface accessory) : IAT sensor is an accessory, it is not mandatory to operate in remote user interface, because WUI has an internal sensor to measure the room temperature take with the internal sensor, setpoint selected is air temperature. • On the chiller (with local user interface option) : setpoint is on water temperature are water temperature