RKE Heavy Duty AC Inverter Chiller (70.0 to 96.0 kW)

RKE22000A-VW / RKE30000A-VW

Cooling Capacity
70.0 to 96.0kW
Operable Ambient Temperature Range
2 to 43℃ (Water Cooled)
Operable Liquid Temperature Range
15 to 30
Temp Control Precision


Operates with a maximum energy savings of 57%.

Orion chillers respond to work loads using the least amount of energy.

  • Compared with models running at a 30% load
Highly precise liquid temperature comtrol possible.

The chiller senses the liquid temperature and adjusts the compressor speed accordingly, thus achieving liquid temperature precision control of ±0.5 to ±1.0 ℃. (Precision is subject to work loads. Please consult your dealer if high precision control is demanded.)

Wide range of liquid temperature control.

User settings of liquid temperature between 15 to 30℃ are now possible.

Adopted for use with environmentally friendly refrigerant.

Uses non ozone-depleting R407C refrigerant.

Comes with built-in communications interface as standard equipment.

Allows temperature control via RS232C or RS422 unterface

  • RKE30000A-VW modes excluded.


See the following page for application examples using heavy duty AC inverter chillers. Have a look!


Water Cooled
RKE22000A-VW RKE30000A-VW
Cooling Capacity (50/60Hz)※1 kW 70.0/73.0 96
Operable Ambient
Temperature Range
2 to 43
Operable Liquid
Temperature Range
15 to 30
Control Precision※4 Under high precision setting ±1.0℃ (±0.5℃ during stable load),
Under energy-saving setting ±1.0℃ (±0.5℃ during stable load, ±2.0℃ during ON / OFF cycle mode)
Power Source※2 V(Hz) Three phase 200 ±10% (50/60), 220 ±10% (60)
Power Consumption※1 kW 38.0 / 40.0, 40.0 43, 43
Electric Current※1 A 125 / 128, 128 126, 126
Power Capacity※3 kVA 50.0 54
Breaker Capacity A 175※6
Compressor Output kW 7.5, 7.46 7.5 × 2
Condenser Double pipe water cooling
Heat Exchanger Construction Plate type heat exchanger
Material SUS316 grade stainless steel (brazing: copper)
Discharge Pump Output kW 3.2 × 2 (Inverter driven)
Flow Rate L/min Minimum 400 (Head: 50m)
Water Tank Capacity L Approx. 250 Approx. 320
Refrigerant R407C
Charged Amount kg 6.0, 3.4 6.0 × 2
External Dimensions H mm 1700
D mm 1240 1340
W mm 2050 2350
Unit Mass (dry weight) kg 1100 1420
Operating Noise Level (50/60 Hz)※5 dB 61 62
  1. When operating under these conditions: chilled water temperature is 20℃, ambient temperature is 32℃, cooling water temperature is 32℃. Cooling capacity is at least 95% of the noted figures.
  2. Source voltage phase unbalance should be less than ±3%.
  3. The figure noted is when the equipment is operating at the highest capacity of its normal operating range.
  4. Stable load indicates continued operation with maximum load fluctuations of ±10% of the current load. (However, this excludes cases where the electronic capacity control valve cycles ON and OFF.) The settings can be changed by adjusting parameter F15. (Default value: High-precision setting.)
  5. Operating noise levels are from a position of 1m in front of the unit and at a height of 1m.
  6. Unit comes with a built-in multi-purpose overload and short circuit protection breaker.
  1. Please install the included strainer (40 mesh) to the liquid intake port.
  2. The recommended liquid (chilled water) that can be used is either clean water or a 30 to 40% industrial-use ethylene glycol solution. Alternatively, if deionized water is used, it should have an electrical conductivity of at least 1µS/cm.
  3. The above two models are built-to-order items.

External Diagram



Cooling Capacity Diagram
Chilled Water Flow Rate
RKE22000 / 30000A-VW
RKE22000 / 30000A-VW
Cooling Water Flow Rate (for condenser)
RKE22000 / 30000A-VW
RKE22000 / 30000A-VW