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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 (1 to 50°C), external thermocouple set-point (1 to 149°C), liquid and ambient delta-T (-50 to 50°C), external thermocouple and ambient delta-T (-50 to 50°C); 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.

Download Spec Sheet