The transcritical CO2 rack BOOSTER XL is suitable for medium and low temperature applications operating in large supermarket, cash & carry and distribution centre. The cooling capacity is between 220 and 460 kW for MT applications and between 45 and 120 kW for LT applications. The system uses more than 5 compressors in MT and more than 4 compressors in LT.
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The Arneg BoosterXL has

  • MT capacity from 220 to 460kW (5 compressors)
  • LT capacity from 45 to 120kW (4 compressors)
  • Parallel compressor
  • Variable speed device on MT1, LT1 and parallel compressor
  • Heat recovery (up to 2)
  • Double oil separator
  • Double liquid receiver
  • Optional ejector

Arneg CO2 Solutions



Modular dimensions: Lenghts starting from 8100; W 1250; H 2200 (measurements of the soundproof closed version)

Refrigerant charge(s) lbs/kg

It depends on plant's dimension. Liquid receiver volume available upon request.

Capacity, kW/TR/BTU/hr

MT: from 220 kw @ -8°C; LT: from 45 kw @ -33°C

Type, number compressors HP

Semihermetic compressors: MT = > 5; LT = > 4

Type of controls

Carel, Danfoss, Dixell, Eliwell, RDM, Wurm, Eckelmann

Type oil separator


Discharge gas desuperheater, subcooling

Yes for both

Heat reclaim

Yes, up to 2

VFD for compressors

Yes, 1st MT compressor, 1st LT compressor, 1st parallel compressor

Type of piping

Copper K65, Copper R220, Stainless steel

Ejectors, Parallel compression

Yes for both





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