Free Cooling

  • Dantherm Displacement Free Cooling for electronics cooling in small rooms Dantherm DFC

for Telecom rooms, shelters and enclosures.

The Dantherm DFC 350 and 450 are slim passive cooling units utilising the displacement free air cooling technology. The units are designed to remove excess heat from small rooms with electronic equipment, where the air is stagnant.

What is Displacement Free Cooling?

The Dantherm DFC units supply cool outside air to the bottom of the room. This forces the warmer air in the room to move up. This is known as displacement cooling, because the hot air inside the room has been displaced by a cushion of cool air.

When is the Dantherm DFC a good choice?

Displacement Free Cooling by Dantherm is most efficient under the following conditions:

  • In rooms up to 12m2
  • When the internal air is stagnant

Specific strengths of the DFC-solution

The units are less cost-intensive and more silent than traditional Free Cooling solutions, because they operate with lower air flows and fan speed. Furthermore, the DFCs are small in size, taking up a minimum of space in the room.

The 6th generation features the Dantherm CC3000 controller with includes dual-zone cooling, night mode and browser-based remote control.

Contact Dantherm

Customer support
+45 96 14 37 83

Send us an e-mail
  • Radio base stations
  • Telecom shelters
  • Electronics enclosures
  • Power supply rooms
  • Network & computer rooms
  • Automation control cabinets
  • DC Powered Sites
Features and Benefits

Dantherm Displacement Free Cooling 350 and 450

  • Stay in control: total heat management with control of several external units
  • Ensure energy-efficient cooling strategy: automatic change between cooling modes
  • Protect your equipment: F5 displacement bag filter keeps your rooms clean
  • Avoid unscheduled service visits: plan service with built-in filter monitor
  • Wide geographical usage: ambient temperature operating range from -40 to 55°C
  • Silent and energy-efficient: very low air flow and fan speed
  • Dantherm DFC displacement free cooling for Telecom The Dantherm DFC for electronics cooling in small rooms.
  • Dantherm Displacement Free Cooling - DFC for energy-efficient free cooling in Telecom. Dantherm DFC, bag filter mounting.
  • Dantherm DFC for displacement free cooling in Telecom The Dantherm DFC from the inside.
  • Displacement Free Cooling by dantherm - DFC for energy-efficient cooling in Telecom. Dantherm Displacement Free Cooling unit, bag filter mounting and inside of cabinet.
Cooling Modes - Dantherm Displacement Free Cooling 350  450
Automated change of cooling modes Energy-optimised cooling algorithm Dantherm Displacement Free Cooling solutions are total heat management systems. The climate units are controlled via the Dantherm controller, to maintain the desired temperature the most energy-optimised way. bullet bullet
Displacement Free Cooling Savings Due to low air flows and fan speed, this free cooling technology is even more cost-efficient than traditional free cooling. bullet bullet
Active cooling Active cooling Existing external air conditioner can be connected and controlled to ensure that customers maximum temperature threshold is not exceeded. bullet bullet
Heating: control of external heater bullet bullet
Emergency cooling In case of overheating Redundant cooling safety If the indoor temperature rises above set point, the unit assumes malfunction of the Air Conditioner and initiates maximum cooling, to ensure site up-time. NB: DC-powered units only. bullet bullet
Installation 350 450
Indoor installation  bullet bullet 
Plug-and-Play bullet bullet
Power supply 350 450
230V AC bullet  bullet 
48V DC bullet bullet
Controller type 350 450
Dantherm CC3000 bullet  bullet 
Controller features 350 450
LCD display directly on the controller bullet   bullet
Able to control a larger number of external units; Air Conditioners, heater, dampers and additional fan boxes. bullet bullet
RS 232 cable connection for laptop or remote monitoring RS232 communication Enables remote monitoring and integration into customer SNMP systems and on-site installation and maintenance support via Laptop. bullet  bullet 
Digital filter status detector bullet bullet
Log of 200 lines of alarms bullet bullet
Stepless and adaptable fan speed control bullet bullet
Fan surveillance of rpm and power consumption bullet bullet
Dual zone cooling bullet bullet
Night mode bullet bullet
Browser based remote control bullet bullet
Other features 350 450
 Standard F5 filter - optional F6 filter  bullet bullet 
 Low noise due to low air flows  bullet bullet 
Ambient Temperature operating range from -40 to 55°C bullet   bullet
Optional AirMaze® AirMaze® Optional feature prohibiting water and sand intrusion and securing high IP-rating. bullet  bullet 
TC function TC function For installations in very cold climates. Mixing the air to protect the equipment.    bullet
Dantherm DFC 350 450
Voltage AC or DC DC/AC DC/AC
Max capacity in kW
at Δt = 5°C
3 5
Max air flow m³/h 514 1100
Weight in kg 10 13

 Dantherm AirMaze Panel

Recirculation Damper



Dantherm-Airmaze-Panel Dantherm recirculation damper
Indoor-mounted Free Cooling units bullet  
Protection against wind-driven water, sand, snow and leaves bullet  
Mixing the air to protect the equipment for installations in very cold climates.
(DFC 450 only)
Service Manual (EN)

Data Sheets AirMaze

Data Sheet Dantherm DFC 350-450 Data Sheets Controllers