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HOC250C3AD (Cooling Only)
HOC250R3AD (Reverse Cycle)

3 Phase, Four Stage, 250kW, Split System, Outdoor Section only

Comm Air Australia’s 4 stage split system range are known for being a robust and versatile air conditioning system that offers high performance, reliability, and ease of use. Our units are all designed, engineered and manufactured here in Perth, Western Australia & built to withstand the harsh and unforgiving Australian climate.

These units feature four independent refrigerant circuits ensuring redundancy, Eight Danfoss scroll compressors in tandem arrangements that allows for a simplified method of reliable capacity control, a double-skinned 50 mm insulated indoor cabinet, a variable speed EC outdoor fan with active head pressure control and a marine grade aluminium drain tray all as standard features. It operates with environmentally friendly R410a refrigerant and can interface with most building management systems. The unit has a product range of 55 kW to 350 kW and can be customized to suit different indoor airflow paths and configurations.

Ideal for commercial, military or industrial applications that require a flexible and robust air conditioning solution. Our units are easy to install, service, and operate, and meets the latest Australian standards. Contact us today to get a free quote and find out more about our products and services.

  • 50mm insulated & double skinned sheet metal indoor section
  • Military grade CAA PC board ensures reliability and simplicity for controls
  • Thermal expansion valve for dynamic control of refrigerant
  • Condenser and Evaporative coils have anti-corrosion protection applied
  • Automatic outdoor fan speed controller (Head pressure control)
  • High and low pressure safety cutouts
  • Accumulator fitted to avoid floodback conditions
  • Bi flow filter dryer
  • Sight glass for monitoring refrigerant conditions
  • Marine grade aluminium drip tray to both condenser and evaporator coils
  • Genuine Danfoss compressors, txv, sight glass and fittings
  • EC plug indoor fans
  • Australian made and powder coated steel body throughout.
  • Powder coated to complete body ensures superior protection from the elements  
  • Modbus compatible
  • BMS compatible
  • External overloads from compressors and AC fans
  • 24V AC control circuit
  • Power segregation for high and low voltage components
  • 100 Percent Fresh Air capable
  • Active Dehumidification System
  • Hot Gas Bypass
  • Stainless steel fixings
  • Stainless steel cabinet
  • Blygold coating to coils for additional corrosion protection
  • Close proximity wireless monitoring and diagnostics direct to CAA controller
  • Soft starters to reduce in rush current
  • Heat reclaim / hot gas reclaim for active dehumidification
  • F4 / G4 filtration to indoor and outdoor sections
  • EEV for electronic control of phase change
  • Polyurethane 2 part UV resistant coating
  • Customised enclosure for switchboard
  • Traffolyte Identification labels
  • Copper / Copper coils
  • Rotolocks / Ballvalves on suction & discharge of compressor
  • Coil Guards
  • Customised ducting arrangement

LT1 Controller Instruction Manual (Single Stage Systems)

LT2 Controller Instruction Manual (Two Stage Systems)