WSA-WSI Techno
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Air Cooled - 280-1860 kW ErP2021 - R513A (WSA) / R1234ze (WSI) - Screw Compressors with free-cooling technology and cooling capacities from 280 to 1860 kW. Designed for 24/7, 365-daya-year process cooling applications, the new WSA or two refrigeration circuits with stepless screw compressors (WSA) / inverters (WSI) and use plate or shell and tube evaporators with dry expansion and high heat exchange surface. The WSA/WSI range is Directive 2009/125/EC Ecodesign ErP 2021. Thanks to the heat exchangers and their sizing, it was possible to top of the category. Refrigerant Circuit • Cooling capacity: 280 - 1860 kW • • One or two redundant and independent refrigeration circuits for maximum reliability • 1 or 2 screw compressors with stepless modulation (WSA) or integrated inverter (WSI) • AISI 316 stainless steel brazed plate evaporator: single-circuit units • Shell and tube evaporator with direct expansion and single pass: dual-circuit units • Microchannel condensers entirely made of longlasting aluminum (HA9153A) and installed with V and W geometry • Copper-aluminum Free Cooling coils + 2 lowpressure-drop modulating two-way valves • Electronic Expansion Valve (EEV) • Ø 910mm, with speed control via phase cut module (optional EC brushless fans available) • High and low pressure safety valves on the refrigerant side. Hydraulic circuit composed of painted steel pipes coated with insulating material Evaporator P1 (1.5 bar) or P2 (2.5 bar) centrifugal pumps, with cast iron pump body and impeller, asynchronous or inverter motors Electrical Panel • Designed and built in compliance with EN 60204 standards • Triple-door metal structure with IP44 protection rating for outdoor installation (IP54 available as an option) • Automatic switches and contactors • Standard phase monitor • Clean contacts: remote ON/OFF; general alarm • Labeled electrical cables • SEC.blue electronic controller with 7” color touchscreen display WSA ErP chillers are available in an integrated Free in cold or temperate climates. Cooling system can entirely replace the refrigeration achieve a Total Free-Cooling Temperature (TFT) 10°C below the set point temperature. WSA - WSI units can be paired with FCB free cooling modules to maximize free cooling performance, further increasing the total free cooling temperature TFT. Low Noise Version Even in the Low Noise version, ideal for installations near residential areas, our units maintain high sound-absorbing composite material coating. Down to -20°C Thanks to a sophisticated condensation control system based on partialization of the condensation version can operate in ambient temperatures as low as -20°C. LOW GWP Version for Low Environmental Impact WSA - WSI units are available in two low environmental impact versions ensuring a reduction in global HT Version for High Applications (e.g. plastic) designed to produce chilled water with evaporator outlet temperatures from +15°C to +25°C. The compressor has an enhanced motor, allowing wide o

Total power input (1) Total power input (1) Total power input (2) Total power input (2) Temp. 100 % Free Cooling (2) [°C] Technical data Technical data Hydraulic connection diameter Empty weight BASIC version [kg] (5) Empty weight BASIC version [kg] (5) (1) Data refer to nominal condition (UNI EN 14511:2018): water temperature inlet/outlet 12/7°C, ambient air temperature +35°C. (2) Data refer to HT high water temperature conditions for IT applications: water temperature inlet/outlet 30/20°C, ambient air temperature +35°C (3) Data declared in accordance with European Regulation (EU)...

Total power input (1) Total power input (1) Total power input (2) Total power input (2) Temp. 100 % Free Cooling (2) [°C] Technical data Technical data Hydraulic connection diameter Empty weight BASIC version [kg] (5) Empty weight BASIC version [kg] (5) (1) Data refer to nominal condition (UNI EN 14511:2018): water temperature inlet/outlet 12/7°C, ambient air temperature +35°C. (2) Data refer to HT high water temperature conditions for IT applications: water temperature inlet/outlet 30/20°C, ambient air temperature +35°C (3) Data declared in accordance with European Regulation (EU)...

Total power input (1) Total power input (1) Total power input (2) Total power input (2) Temp. 100 % Free Cooling (2) [°C] Technical data Technical data Hydraulic connection diameter Hydraulic connection diameter Empty weight BASIC version [kg] (5) Empty weight BASIC version [kg] (5) (1) Data refer to nominal condition (UNI EN 14511:2018): water temperature inlet/outlet 12/7°C, ambient air temperature +35°C. (2) Data refer to HT high water temperature conditions for IT applications: water temperature inlet/outlet 30/20°C, ambient air temperature +35°C (3) Data declared in accordance with...