null Large EVO (WiSAT-YEE1)

New chiller Large EVO

29 September 2023
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Large EVO (WiSAT-YEE1) is the new air cooled chiller for outdoor installation, with R32 refrigerant, available in two energy versions: Excellence (EXC) e Premium (PRM).

The WiSAT-YEE1 range is the ideal solution to meet different kind of applications thanks to full inverter technology on compressors, fans, hydronic assembly and wide operating envelope.

Large EVO offers high seasonal efficiency, both in Excellence version (SEER up to 5.34) and Premium version (SEER up to 5.06)

The capacity range varies according to the energy versions:
•    Excellence (EXC) energy version: Range 110 - 226 kW
•    Premium (PRM) energy version: Range 125 - 252 kW

Further strengths 

Eco-friendly solution

The use of R32 refrigerant, with a low GWP (Global Warming Potential = 675), guarantees an environmental impact that is about -70% compared to traditional R-410A refrigerant (GWP = 2088).

Advanced technology

Inverter rotary/scroll compressors, high efficiency DC fans with variable speed control, Microchannel aluminum coils, are some of the technologies available that allow to:

  • Perfectly match the cooling load of the plant in any condition
  • Follow the load also with a great staging
  • Ensure high efficiency values, reducing operating costs
  • Ensure negligible start-up current 

Low noise operation

The Large EVO range offers 3 acoustic levels, without changing the unit dimensions:

  • Acoustic configuration with compressor soundproofing (SC): basic version
  • Silenced acoustic configuration (LN): -3 dB (A) compared to SC
  • Super-silenced acoustic configuration (EN): -6 dB (A) compared to SC

Maximum adaptability

Thanks to the capacity modulation from 100% to 20%, the double refrigerant circuit, the extended operating limits are able to satisfy the requirement of multiple operating conditions.

Extended operating limits

The new LARGE EVO is able to guarantee:

  • Operating range from -20°C to +48°C ambient
  • Leaving water temperature down to -8°C

Many options and accessories:

  • Hydropack with 1 on/off pump, low or high head
  • Hydropack with 1 inverter pump, low or high head
  • Hydropack with 1+1 on/off pump (1 pump in stand-by), low or high head
  • Hydropack with 1+1 inverter pump (1 pump in stand-by), low or high head
  • Storage tank 
  • Partial heat recovery
  • Additional condensing coil treatment for aggressive environments

Cascade management

Large EVO is designed to connect up to 8 units in a local network, reaching a maximum system capacity of 2016 kW.

Additional functions

Thanks to the new electrical control box, Large EVO features many additional function to better fit each specific installation requirement:

  • Remote on/off
  • Double set-point management
  • Sgready function
  • EVUlock function
  • Demand limit
  • Energy metering
  • Activation of silent or super-silent acoustic version (selectable on the user interface)