Refrigeration plant NH3 -ammolite

Direct expansion

ammonia refrigeration

utility modell ammolite


Direct expansion ammonia refrigeration condensing unit with low charge technology developed by INTARCON for low temperature industrial applications. Compact air-condensed construction and built in galvanised steel body and chassis with polyester paint, for outdoor installation.

  • Plug & Play.
  • Low ammonia charge.
  • No machine room.
  • No water consumption.



  • 400V 3N 50Hz power supply. Available in 60 Hz. Others voltages by request.
  • Semihermetic screw compressors with variable speed permanent magnet motor. Suction filter, check valve, suction and discharge valves integrated in the compressor.
  • Miscible oil with return through suction, no bleeding required.
  • High efficiency vertical oil separator.
  • Tropicalised condenser with aluminium microchannel coils, with Polyester Powder Coating treatment.
  • Oil cooler with stainless steel tube coils and aluminium fins.
  • Variable speed EC motor fans for condensing pressure and oil temperature control.
  • Electronic liquid injection valve for compressor cooling in extreme conditions.
  • Stainless steel cooling circuit with liquid vessel. Filter service valves, sight glasses, pressure switches and high and low pressure transducers.
  • Closed economiser with plate heat exchanger for liquid subcooling and medium pressure injection.
  • Electrical power and control panel. Frequency variator per compressor. Differential protection, magneto-thermal and individual thermal protection for compressor and fans.
  • Electronic control with digital control board, cooling capacity control, condensation control, VI variation by solenoid, start and stop sequence, compressor, and fans safeties. Web interface and external communication.
  • Heat recovery for production of hot defrost glycol.
  • Variable glycol flow rate.
  • Condensation heat recovery.
  • Stainless steel tube condenser and aluminium fins with polyurethane.
  • Epoxy oil cooler coil coating.
  • Hydraulic group for accumulation and pumping of hot glycol.

Ammolite - DW-MM - INTARCON