NSG
1402/9603
cooling only
Air/Water chillers for outdoor installation
Screw compressors, shell and tube heat exchangers and axial fans
Cooling capacity 443 – 1578kW
Outdoor chillers for the production of chilled water with high-efficiency screw compressors, with cooling capacity adjustment via continuous modulation. Axial fans, microchannel external coils, plant side shell and tube heat exchanger. In the units (with desuperheater or total recovery) there is also the possibility of producing hot water for free. The base, the structure and the panels are made of steel treated with rustproof polyester paint.
HFO R1234ze is a mixture featuring
ODP=0 e GWP ( Global Warming Potential) = 7
R134a GWP = 1430, with thermodynamic properties that guarantee and sometimes improve efficiencies achieved with HFC refrigerants.
NSG_° Standard
NSG_L Standard low noise
NSG_A High efficiency
NSG_E High efficiency low noise
NSG_U Very high efficiency
NSG_N Very high efficiency low noisE
Work up to 45°C of outdoor air temperature at full load, depending on size and version. For further details refer to the selection software/technical documentation.
• Unit with 2/3 refrigerant circuits designed to provide maximum efficiency at full load, ensuring high efficiency at partial loads also and ensuring continuity in case one of the circuits stops.
• The full range uses aluminium microchannel coils, ensuring very high levels of efficiency. This allows using less refrigerant compared to traditional copper coils.
• The full range uses electronic thermostatic valve. The possibility of using this valve brings significant benefits, in particular when the refrigerant is working at partial loads to the benefit of energy efficiency of the unit.
• Standard differential pressure switch
• Possibility of integrated hydronic kit that encloses the main hydraulic components; it is available in different configurations with one or two pumps, with different static pressures available
• Microprocessor adjustment, with keyboard and LCD display, for easy consultation and intervention on the unit via a menu available in several languages. Adjustment includes complete management of the alarms and their log. The presence of a programmable timer allows setting
time bands of operation and a possible second set-point. The temperature control takes place with the integral proportional logic, based on the water output temperature.
Night Mode:
It is possible to set a silenced operation profile. Perfect for night operation, since it guarantees greater acoustic comfort in the evenings, and a high efficiency in the time of greater load.
“ Night Mode is standard on all low noise versions. For all other versions either the DCPX accessory or “J” inverter fan must be specified to allow Night Mode to operate.”
