Calorex WA 634ACL Water Chiller

Calorex water chillers are ideal for large-scale cooling of water in a variety of applications.

Originally designed for commercial applications in the health and leisure marketplaces (i.e. cold water therapy, plunge pools), Calorex water chillers can be applied to hydroponic systems where large-scale water chilling can be required to limit the potential for algal growth due to heating of the nutrient solution. The WA 634ACL and WA 1234BC units produce 500 and 900 L/hr of cold water respectively, and can reduce water temperature down to 10°C

  • Up to 900 litres per hour of cold water production
  • Fully packaged, robust and weatherproof construction
  • Quiet operation
  • Certified cupronickel WRAS approved heat exchanger to allow the unit to be used in a direct system with potable water
  • Non ozone depleting refrigerant (R134a)
  • Commercial water cooling




WA 634ACL WA 1234BC
Air temperature range °C 10-50  10-55
Water temperature range °C 10-40  10-40
Output @ 32°C water kW 5.5 9.8
Input @ 32°C water kW 1.9 3.2
Output @ 10°C water kW 2.8 5.9
Input @ 10°C water kW 1.4 2.5
Nominal cold water production l/h 500 900
Min./max. tank size l 60/500 110/1,000
Electrical input kW 1.9 3.2
Power supply V/Hz 220-240/1ph/50 400/3ph/50
Max. supply fuse A 20 16
Starting current A 32 48
Water flow ±10% l/min 33 33
Flow resistance mhd 2.1 2.1
Connections inch ¾ BSPM ¾ BSPM
Nominal air flow m³/h 1,500 3,000
Fan external resistance (standard) Pa 50 50
Fan Type 1 x Centrifugal 1 x Centrifugal
Sound pressure level @ 3m dB(A) 63 65
Product size (w x d x h) mm 820 x 702 x 762 1060 x 705 x 807
Weight kg 111 157



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