RKE-B (12.2 to 48.0 kW)
Heavy Duty DC Inverter Chiller
Energy-Saving Specs. are Top Class in the Industry!

RKE3750B-V(W) / RKE5500B-V(W) /
RKE7500B-V(W) / RKE11000B-V(W) /
RKE15000B-V(W)

Cooling Capacity
(50/60Hz)
12.2 to 48.0 kW (Air Cooled)
Cooling Capacity
(50/60Hz)
14.1 to 48.0 kW (Water Cooled)
Operable Ambient Temperature Range
–20 to 45 °C (Air Cooled)
2 to 45 °C (Water Cooled)
Operable Liquid Temperature Range
3 to 35 °C
Temperature Control Precision
±0.1℃
  • TESC
    TESC Built In!
    Three Eco Speed Control offers the ultimate eco-operation!
    Power Consumption Rate
    The changes in the energy consumption rate follow changes in the load factor. Thanks to TESC being built into the RKE-B Series, it offers even further reductions in power consumption over previous models.
  • Compressor Speed Control
    DC Inverter Drive with Automatic Optimized Operation Judgment
  • Fan Speed Control
    Automatic Optimized Operation Judgment from the Inverter
  • Pump Speed Control
    Operates at the minimum speed needed to achieve the required flow rate, and reduces wasted water flow.
Left: RKS750G-MVW Right: RKS1500G-MVW
Left: RKE3750B Right: RKE11000B
Pump is also Inverter Driven
The compressor,
and the fan AND the PUMP are Inverter Driven!

Being able to achieve just the required flow rate eliminates waste, even without bypass-valve control.

インバータで駆動
The pump control method can be selected.

In addition to setting the operating frequency, it is also possible to set the flow rate based on an estimated flow rate standard, or set the water pressure. Operation possible at the optimum flow rate or pressure in accordance with the load.

制御方法が選択可能
Intelligent Touch Panel

Settings and operating conditions can be visually and intuitively checked and operated via the touch panel controller.
The displayed language can be changed to English or Chinese.

Intelligent Touch Panel

Graph Screen

Easy operation with just the flick of a switch!Error code display gives important information about the alarm. Allows for quick restore after an issue.

Graph Screen

Touching the "Measured Liquid Temp" button will change the display to the Graph screen where changes in liquid temperature will be graphed over a particular time period (up to 53 hours) in order to better aid in liquid temperature management.

Operating Rate (Power Indicator)

Easy operation with just a press of a button!Error code display gives important information about the alarm. Allows for quick restore after an issue.

Power Indicator

Shows the operating state of the compressor on a 10-level display to allow for easy confirmation of current operating conditions.

Measured Pressure

Touching "Measured Pressure" brings up a screen where the flow rate setting can easily be changed.

Menu

Touching "Menu" allows easy setting and confirmation of various parameters, error history, accumulated running time of primary components, timer functions, etc.

Timer Setting

Touching the "0:00:00" start time allows setting of designated start/stop settings. Actions can be repeated or set according to the day.

Easy Maintenance and Alarm Display

Alarm Display

Alarm numbers are displayed when alarm conditions occur.
Touching the "Details" button will bring up further details about the alarm and information on what measures to take.

The display language can be changed.

English
英文
(English)

中文
Chinese
(中文)
Low Noise and Noise Reducing Design

Ideal inverter fan speed control through optimized refrigeration cycle control. Operating noise has been greatly reduced. Operating noise level measured from a position of 1 m in front and at a height of 1 m.

60dB
Low Noise and Noise Reducing Design
Operation and Monitoring via PC or Sequencer Possible

Communications functions can be utilized through a control program to match your specific application.

Communications Method

USB: 1 Unit, RS-422A: 32 Units, RS-485: 32 Units

Items that can be controlled via PC:
  • Starting and stopping of individual chiller units.
  • Individual operation of chiller discharge pumps.
  • Liquid temperature control of individual chillers.
通信機能

Detailed display functions enable quick recovery!

  • Inspection Warning
  • Liquid Temperature Warning
  • Water Pressure
  • Refrigeration Circuit
  • Inverter etc.
Meets the Demands of World Markets
  • CE Marking and RoHS Compliant Models Available
  • Other International Standards
    For inquiries, please contact us via our web site.

[Air Cooled] Specifications

Model Air Cooled
RKE3750B-V
G1 / G2 (Incl. casters)
RKE5500B-V RKE7500B-V RKE11000B-V RKE15000B-V
Performance Cooling Capacity※1 kW 12.2 20.3 25.0 37.2 48.0
Heating Capacity※2 kW 2.8 3.7 8.0 10.0
Operable Ambient Temperature Range –20 to 45 (With installed option: –20 to 50)
Operating Liquid Temperature Range 3 to 35 (0 to 35: When using brine)※8
Control Precision※3 ±0.1 °C (When energy saving mode is set: ±2.0 °C)
Operable Flow Rate Range L/min 15 to 60 60 to 170 100 to 230
Electrical Specifications Power Source※4 V(Hz) Three-phase 200 to 220 ±10% (50/60)
Power Consumption※1 kW 5.4 9.8 10.2 14.4 18.1
Electric Current※1 A 16.5 30.1 33.5 47.0 56.3
Power Source Capacity※5 kVA 7.0 11.0 11.8 19.5 22.0
Breaker Capacity※6 A 30 50 75 100
Operation Control Method Compressor speed control
Device Specifications Refrigeration Compressor Construction Fully sealed rotary type
(inverter driven)
Fully sealed scroll type
(inverter driven)
Output kW 1.7 3.0 4.6 7.46 11.19
Condenser Fin and tube forced air cooling
Evaporator Construction Plate type heat exchanger
Material SUS316 (Brazing: Cu)
Discharge Pump Construction Multistage spiral immersion type
Output kW 1.1 (Inverter driven) 2.0 (Inverter driven) 4.0 (Inverter driven)
Fan Output kW 0.4 (Inverter driven) 0.75 (Inverter driven) 0.4×2 (Inverter driven)
Water Tank Capacity L Approx. 60 Approx. 90 Approx. 100
Refrigerant R410A
CE Marking Compliant Models Available
External Dimensions
(H × D × W)
mm G1 : 1410
(G2 : 1536)
×752×720
1700
×854×870
1700
×854×1380
1800
×854×1610
Product Mass (Dry weight) kg G1:200・G2:205 280 290 415 460
Operating Noise Level※7 dB 60 63 69 68
  1. When operating with cooling water temp: 20 °C; ambient temp: 32 °C. Cooling capacity will be at least 95% of the displayed power.
  2. Only during startup, and will differ depending on the ambient temperature.
  3. Continuous current load fluctuation within ±10%, and with stable ambient temperature and power supply, etc. Does not include starting times or when the compressor may cycle on and off due to very low cooling loads.
  4. The source voltage phase unbalance should be within ±3%.
  5. The figure noted is when the product is operating at the highest capacity within its normal operating range.
  6. Comes standard with a built-in multi-purpose overload and short circuit protection earth leakage breaker.
  7. Operating noise levels are from a position of 1 m in front of the product and at a height of 1 m.
  8. If operating with a set temperature down to 0 to 3 °C, then use a 30% to 40% solution of industrial-use ethylene glycol.
  1. The recommended liquid (chilled water) for use in this product is clean water or a 30% to 40% solution of industrial-use ethylene glycol. However, when doing so, there will be a 10% drop in cooling capacity. Alternatively, if conditioned water is used, then it should have an electrical conductivity of at least 1 µS/cm.
  2. Heat output from the product (in kW) is approx. 1.3 times that of the cooling capacity.

[Water Cooled] Specifications

Model Water Cooled
RKE3750B-VW
G1/G2 (With Casters)
RKE5500B-VW RKE7500B-VW RKE11000B-VW RKE15000B-VW
Performance Cooling Capacity※1 kW 14.1 23.4 27.3 43.0 48.0
Heating Capacity※2 kW 2.8 3.0 3.1 9.1 10.0
Operable Ambient Temperature Range 2 to 45 (With installed option: 2 to 50) 2 to 45
Cooling Water Temperature Range 5 to 45
Operating Liquid Temperature Range 3 to 35 (0 to 35: When using brine)※8
Control Precision※3 ±0.1 °C (When energy saving mode is set: ±2.0 °C)
Operable Flow Rate Range L/min 15 to 60 60 to 170 100 to 230
Electrical Specifications Power Source※4 V(Hz) Three-phase ± 10%(50), Three-phase 200 to 220 ±10% (60)
Power Consumption※1 kW 5.1 8.8 10.1 12.7 15.3
Electric Current※1 A 19.2 31.8 33.0 41.0 48.2
Power Source Capacity※5 kVA 8.0 12.2 12.6 17.5 19.5
Breaker Capacity※6 A 30 50 75
Operation Control Method Compressor speed control
Equipment Specifications Refrigeration Compressor Construction Fully sealed rotary type (inverter driven) Fully sealed scroll type
(inverter driven)
Output kW 1.7 3 4.6 7.46 11.19
Condenser Double-pipe water cooling
Evaporator Construction Plate type heat exchanger
Material SUS316 (Brazing: Cu)
Discharge Pump Construction Multistage spiral immersion type
Output kW 1.1 (Inverter driven) 2.0 (Inverter driven) 4.0 (Inverter driven)
Water Tank Capacity L Approx. 60 Approx. 90 Approx. 100
Refrigerant R410A
CE Marking Compliant Models Available
External Dimensions
(H × D × W)
mm G1 : 1410
(G2 : 1536)
×752×720
1700
×854×870
1410
×854×1380
Product Mass (Dry weight) kg G1:200・G2:205 280 290 405
Operating Noise Level※7 dB 58 59
  1. When operating under these conditions: chilled water temperature is 20 °C, the cooling water temperature is 32 °C, and the ambient temperature is 32 °C. Cooling capacity is at least 95% of listed figures.
  2. Only during startup, and will differ depending on the ambient temperature and cooling water temperature.
  3. Continuous current load fluctuation within ±10%, and with stable ambient temperature (cooling water temperature) and power supply, etc. Does not include starting times or when the cooling load is too small, in which case the compressor may cycle on and off.
  4. The source voltage phase unbalance should be within ±3%.
  5. The figure noted is when the product is operating at the highest capacity within its normal operating range.
  6. Comes standard with a built-in multi-purpose overload and short circuit protection earth leakage breaker.
  7. Operating noise levels are from a position of 1 m in front of the product and at a height of 1 m.
  8. If operating with a set temperature down to 0 to 3 °C, then use a 30% to 40% solution of industrial-use ethylene glycol.
  • The recommended liquid (chilled water) for use in this product is clean water or a 30% to 40% solution of industrial-use ethylene glycol. However, when doing so, there will be a 10% drop in cooling capacity. Alternatively, if conditioned water is used, then it should have an electrical conductivity of at least 1 µS/cm.