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ZKB 20/18 - ZKB 20/18-B

Mobile air conditioning system with high cooling capacity and optional fuel-powered heating

The ZKB 20/18 and ZKB 20/18-B Weiss mobile air conditioning systems have been developed specifically for mobile cleanrooms, medical and rescue tents and command posts. Even at extreme ambient temperatures of up to +60°C, the air conditioning systems operate reliably. The increased cooling capacity is up to 18 kW. The ZKB 20/18 system is equipped with patented, fuel-powered heating with a capacity of 30 kW. Even with an ambient temperature of -32°C, comfortable temperatures can be achieved in the tents. A heat carrying medium is used to transfer heat into the tent where it is supplied to the ventilation system. The indirect heating system prevents emissions from entering the tent.


  • Vibration and shock-resistant tested unit under VG 95332, severity level 5
  • Modular installation for easily replacing components
  • Casing and frame made from aluminium, thus reducing weight
  • Compact design with transport frame
  • Operation as a fresh air or a recirculating air system possible
  • Electric heater optional with fuel heater available
  • Water/glycol mixture fuel-powered heating, indirect heating, CO monitoring not required
  • Design closed from above, therefore no rain, snow and pollution contamination
  • Reliable operation at external temperatures of up to +60°C

Supply scope

  • Basic unit
  • Air supply hose, insulated
  • Control panel incl. thermostat


  • Multifunctional transport box
  • Air distribution system
  • F7 Filter inside basic unit
  • H13 Filter box
  • Soft starter for compressor
Weiss mobile air conditioning systems

Technical Specifications

  ZKB 20/18 ZKB 20/18-B
Cooling capacity kW   18
Refrigerant   R134a
Air quantity Intake air m³/h
Condenser air m³/h
3.000 (speed controlled)
EMC per 89336/EWG EN 50581 and EN 50082  
Power supply   400 V, 3 Ph, 50 Hz
Operational ambient temperature °C   -32 bis 60
Paint   RAL 6031, bronze green
Dimensions Height - mm
Width AC - mm
Depth - mm
Weight - kg 350 400
Filtering Step 1
Step 2
Step 3
G4 (EN 779)
optional F7 (EN 779)
optional H13 (EN 779)
Sound pressure Internal dB (A)
External dB (A)
Transport The system is designed with a transport frame with fork lift pockets and is stackable.
Connected load kVA   max. 9


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