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Calorex DD 1300-2300-3300 – adsorption dehumidifiers
Calorex DD 1300-2300-3300 – adsorption dehumidifiers

DD 1300-2300-3300 – adsorption dehumidifiers

Industrial drying – adsorption

A series of three compact high capacity dehumidifiers offering continuous range of air flows, insulated casing and advanced PLC controls suitable for both commercial and industrial applications.


Key features

  • Insulated stainless steel casing
  • Construction suitable for commercial and industrial applications
  • Three phase electrical supply
  • Air flow across the ranges from 600m3/h to 3,600m3/h
  • Dehumidification capacities across the ranges from 9.5kg/h to 14.7kg/h (at nominal air flow and 20°C, 60% RH)
  • Easy access for servicing and maintenance
  • Standard duct connections with 200Pa to 450Pa external static pressure at nominal air flow, (depending upon model)
  • Electrical/Gas or Steam reactivation heaters available
  • The electrical reactivation heater has a PTC-type (Positive Temperature Control) heater, which cannot be overheated, and gives the possibility of a step-less control for 50-100% of the dehumidification capacity – this is achieved by controlling the reactivation air volume
  • PLC controller fitted with rotation guard, run time meter and service alarm

Air flow range

DD 1300 DD 2300 DD 3300
600m3/hr to 1,500mm3/hr (nominal air flow: 1,300m3/hr) 1,400m3/hr to 2,600m3/hr (nominal air flow: 2,300m3/hr) 2,500m3/hr to 3,600m3/hr (nominal air flow: 3,300m3/hr)


  • Remote humidistat/humidity sensor
  • Modulating heater control
  • EC process fan
  • EC reactivation fan
  • EC fan speed control
  • Communication with building management system via Modbus, Canbus or via web server
  • Wet air heat exchanger
  • Continuous process fan operation
  • Filter guard
  • Reactivation wet air thermostat (not in combination with modulation control)


This series of dehumidifiers are designed to be used in both standard and close control scenarios, making them a versatile option for a wide variety of applications. They have many optional features which can tailor them to specific requirements including energy saving and demanding control requirements. The insulated stainless steel construction also allows them to be used where hygiene is an important requirement and where precooling or lower process temperatures are required.

This range can be used for drying air up to 100% relative humidity with temperatures from -30°C to +40°C. Suitable applications include:

  • Production processes
  • Condensation control
  • Equipment preservation
  • Climate control in storage areas
  • Food, beverage and confectionery
  • Material transport and logistics
  • Cold storage
  • Drying processes
  • Climate control in buildings, classrooms, kitchens, laboratories and specialised production areas
  • Substations and water treatment plants

Product specifications

Dehumidification capacity @ 20°C/60% RH


Dry air flow


Available pressure


Wet air flow


Available pressure


Power consumption


Power supply


Sound level


Reactivation power


Electric, steam, gas


Filter class


Product size (l x w x h)

1199 x 807 x 1170



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