EREBATM 17-21 Inverter Air-Cooled Liquid chillers & Reversible Air-to-Water Heat Pumps No additional buffer tank required, simplifying and speeding NHC Control up the installation process (to be checked with the water NHC control associate with compressor and fan variable volume of installation). frequency driver combines intelligence with operating simplicity. ■ Physical features The control constantly monitors all machine parameters and - Advanced circuit design and component selection has precisely manages the operation of compressor, expansion resulted in a compact unit with an exceptionally small devices, fans and of the water heat exchanger water pump for footprint that is easy to transport even through narrow doors.optimum energy efficiency. Reduced operating weight and a handle on the unit panels ■ Ease-of-use to facilitate transport. - NHC control can be associated with a new User interface (WUI) - The unit is enclosed by easily removable panels, covering all which allow an easy access to the configuration parameters components (except air heat exchanger and fans). (frequency compressor, refrigerant circuit temperature, sets ■ A neutral colour (RAL 7035) to facilitate the integration in points, air temp, entering water temp, alarm report…). residential areas - This user interface is also very intuitive in its use. It allows ■ Simplified electrical connections reading and easy selection of the operating mode. The functions are represented by icons on the LCD backlit screen. - Main disconnect switch with high trip capacity To facilitate the use of this interface, 3 levels of access are - Transformer for safe 24 V control circuit supply included available: end user, installer and factory. ■ Fast commissioning ■ Key features - Systematic factory operation test before shipment - Heating and cooling mode - Quick-test function for step-by-step verification of the - Predefined climatic curves (12) or customised climatic instruments, electrical components and motors. curves (water temperature setpoint control) Economical operation - Air temperature set point control - Scheduling mode ■ Increased seasonal efficiency - Low noise level or night mode - Anti-freeze protection - I n accordance with EN 14825:2013, Average Climate, energy - Floor heating thermal cutoff labelreach A+ (see Physicaldata EREBATM Reversible - Slab curing mode units). - Backup electric heater controlled in 1 /2 /3 heat stage(s) ■ Reduced maintenance costs - Backup by oil or gas boiler in alternating mode - Maintenance-free twin rotary compressors - Hydraulic module with control of the flow rate - Fast diagnosis of possible incidents and their history via the- Managed an additional pump user interface WUI - Management of swimming pool heating during spring and - R410A refrigerant is easier to use than other refrigerant blends autumn - Manage domestic hot water with or without Environmental care ● Anti-legionella mode ■ Ozone-friendly R410A refrigerant ● DHW backup ● DHW backup + Boosted by 1 or 2 or 3 electric heat - Chlorine-free refrigerant of the HFC group with zero ozone stage(s) depletion potential - Master/slave controlof 4 units operating in parallel with - Very efficient - gives an increased energy efficiency ratio (EER)operating time equalization and automatic changeover in ■ Leak-tight refrigerant circuit case of a unit fault (sensor in accessory). - ModBUS Protocol - Brazed refrigerant connections for increased leak-tightness - Verification of pressure transducers and temperature sensors■ Choice of control product without transferring refrigerant charge 3options are available to drive the EREBATM17 - 21: Superior reliability ● Dry contact ● User interface WUI ■ Auto-adaptive control ● ModBus protocol - Controlalgorithm prevents excessive compressor cycling User Interface WUI and permits reduction of the water quantity in the hydraulic circuit. ■ 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. 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: ●WUI has an internal sensor to measure the room temperature take with the internal sensor, setpoint selected is air temperature. CATALOGUE 2021 327 327