DYNACIATTM LGN Water chillers Without condenser desCRiptionoFthemainComponents ■ Compressors ■ Connect Touch control module - Hermetic SCROLL type - User interface with 4.3-inch touch screen - Electronic motor overheating protection - I ntuitive, user-friendly - Crankcase heater navigation using icons - Mounted on anti-vibration mounts - Clear text display of information available in ■ Evaporator 6 languages (F-GB-D-E-I- - Brazed-plate exchanger NL) - Plate patterns optimised for high efficiency - 19 mm armaflex thermal insulation ■ Refrigerating accessories The electronic controlmodule performs the following main ∞ functions: - Dehumidifier filters - Regulation of the water temperature (at the return or at the outlet) - Hygroscopic sight glasses - Regulation of the water temperature based on the outdoor - Electronic expansion valves temperature (water law) - Regulation for low temperature energy storage - Service valves on the liquid line - Second setpoint management ■ Regulation and safety instruments - Complete management of compressors with start-up sequence, timer and operating time balancing - Low and high pressure sensors - Self-regulating and proactive functions with adjustment of the - Safety valves on refrigerating circuit control to counter parameter drift - Water temperature control sensors - Optimised defrosting with free defrost function to optimise performance at partial load and the SCOP - Evaporator antifreeze protection sensor - I n-series staged power control system on the compressors - Factory-fitted evaporator water flow controller according to the thermal requirements - Management of compressor short cycle protection ■ Electrical cabinet - Frost protection (exchanger heaters) - Electrical cabinet with IP 23 protection rating - Phase reversal protection - A connection point without neutral - Management of occupied/unoccupied modes (according to the time schedule) - Main safety switch with handle on front - Compressor and pump runtime balancing - Control circuit transformer - Management of the machine operation limit according to - 24V control circuit outdoor temperature - Compressor motor circuit breaker - Sound level reduction device (night mode according to the user programme) with limitation of compressor capacity and - Compressor motor contactors fan speed - Connect Touch microprocessor-controlled electronic control - Diagnostics of fault and operating statuses module - Management of a fault memory allowing a log of the last - Wire numbering 50 incidents to be accessed, with operating readings taken when the fault occurs - Marking of the main electrical components - Blackbox memory ■ Casing - Master/slave management of the two machines in parallel with operating time balancing and automatic changeover if a Frame made from RAL7035 light grey & RAL 7024 graphite fault occurs on one machine grey painted panels. - Weekly and hourly time schedule for the machine, including 16 periods of absence - Pump standby based on demand (energy saving) - Calculation of the water flow rate and operating pressure (hydraulic module version) - Electronic adjustment of the water pump speed and water flow rate (variable-speed pump option) - Display of all machine parameters (3 access levels, User/ Maintenance/Factory, password-protected): temperature, setpoints, pressures, water flow rate (hydraulic version), runtime. - Display of trend curves for the main values - Storage of maintenance manual, wiring diagram and spare parts list. CATALOGUE 2021 487 487