EXC-450 Portable 450W Recirculating Liquid Chiller, 24VDC (Ultra Compact)

Part No. EXC-450 Out Of Stock Expected Oct 19
Volume Pricing
Qty 1 : $1,649.99/ea
2 : $1,588.39
5 : $1,526.79
10 : $1,495.99
20+ : $1,465.19
Add Related Products
BSPP Fittings

Koolance's EXC-450 is an extremely compact (6in x 8in x 21in, or 152mm x 203mm x 533mm) portable recirculating liquid chiller rated at 450W, or 1535 BTU/hr @25°C liquid & ambient. Chiller control is based on one of four configurable temperature set-points, including the option to lock liquid to ambient for avoiding condensation or to an external K-type thermocouple sensor (not included).

Along with temperature and set-point, EXC-450 can report internal coolant flow rate, pump RPM, and condenser fan RPM on a customizable 2-line OLED display. An adjustable relay trigger output on the rear of the unit is available based on temperature.

  • Cooling capacity: 450W (1535BTU/hr) @ 25°C liquid/ambient
  • Temperature options: liquid set-point, external thermocouple set-point, liquid and ambient delta-T, external thermocouple and ambient delta-T; toggle °C/°F
  • Pump: 10 manual levels, up to 8.2LPM (2.2GPM)
  • Select only values you want displayed on the front 2-line OLED display (fixed or rotating)
  • Show pump impeller speed in RPM
  • Show coolant flow rate in LPM/GPM
  • Show condenser fan speed in RPM
  • Adjust audio alarm based on temperature
  • Relay trigger can be configured as NO or NC and adjusted based on temperature
  • Refrigerant: R-134a
  • Power input: 24VDC, 250W
  • Maximum power consumption @ ambient (approximate): 230W @ 25°C
  • Designed for an operational temperature range of 0-40°C (ambient and liquid)
  • Reservoir capacity: 1 liter
  • G 1/4 BSPP threads on back for fittings

NOTE: Requires 24VDC input power. Koolance offers a separate power supply for AC wall outlet sources. Keep unit upright at all times, and for at least 24 hours before applying power to ensure sufficient oil reaches the compressor.

Weight 20.00 lb (9.07 kg)
Fitting Thread G 1/4 BSPP
Max Pressure Tolerance @ 25°C 2kgf/cm2 (28.5psi)
Max Temp. Operating Tolerance 40°C (104°F)
Noise (dBA) 39-54
Cooling Systems
Cooling Capacity 450W (1535BTU/hr) @ 25°C liquid & ambient (0°C dT)
Display Type OLED
Max Flow Rate (10-13mm ID) 8.2LPM (2.2GPM)
Max Power Consumption 230W
Max Static Pressure (10-13mm ID) 0.5kgf/cm2 (7psi)
Power Source 24 VDC
Temperature Sensors Liquid & One K-Type Thermocouple (optional)
Temperature Stability +/-1ºC
Diagrams / Models (See Files Tab for Diagrams and 3D Models)


Liquid Coolants

Koolance's product warranty does not cover the use of 3rd-party coolants, coolant additives, or corrosion. Koolance LIQ-702 or LIQ-705 coolants are strongly recommended to help avoid issues with mixed metals or biological growth. Additionally, do not use aluminum with bare (unplated) copper or bare (unplated) brass in the same system. Do not use silver with nickel in the same system.