Flexibox
Free Cooling

For Telecom shelters, enclosures and rooms.

Dantherm's Free Air Cooling unit, the Flexibox, provides total heat management. Furthermore, the units generate energy cost savings of up to 90 % on cooling in Telecom sites hosting GSM, UMTS or LTE networks.

Free Cooling is cost-effective controlled ventilation: The Telecom shelter or enclosure is cooled by means of ambient air without a compressor.

All of the Dantherm Free Cooling products operate with overpressure delivering filtered air into the room, thereby ensuring a clean environment for the radio transmission equipment.

Flexible, quality-minded cooling solutions

Dantherm offers five Flexibox solutions ranging in capacity from 3-8 kW at delta t 10°C. The newly launched 5th generation features a built-in controller and is for outdoor mounting only. The other generations are for both indoor and outdoor mounting. The Flexibox is available for both AC and DC power, allowing for effective emergency cooling.

The Flexibox as the sole cooling solution is adequate for cooling Telecom base stations in most climate conditions. In warm climates and in climates with high temperature peaks, a combination of free cooling and an air conditioner is a good choice.

The combination prolongs the service life of your existing air conditioner and generates significant energy savings, when the free cooling is active.

  • Dantherm Flexibox Free Cooling Solution telecom and electronics cooling Dantherm Flexibox 450
  • Flexibox Free Cooling Solution by Dantherm telecom and electronics cooling Dantherm Flexibox 400
  • Free Cooling Solution: Dantherm Flexibox for Telecom and Electronics cooling Dantherm Flexibox 350
  • Flexibox 460 for free air cooling by Dantherm Dantherm Flexibox 460
  • Dantherm Flexibox Free Cooling 460 Dantherm Flexibox 460

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Animation:
Flexibox Free Cooling

How does the Free Cooling Flexibox for Telecom Shelters work? Play

Installation Video:
Flexibox

Dantherm Flexibox Installation movie Play
Dantherm Flexibox  Capacities 810 460 450 450 400 400 350 350
Voltage AC or DC DC DC DC AC DC AC DC AC
Voltage 48 48 24+48 230 48 230 24+48 230
Max capacity in kW
at Δt = 10°C		 7.8 4.7 8.2 10 4.8 5.4 2.8 2.8
Max air flow m³/h 2,333 1,488 2,490 2,970 1,440 1,600 865 865
Weight in kg 25,5 24 22 22 18 18 10 10
Cooling Modes - Dantherm Flexibox 810  460 450 400 350
Automated change of cooling modes Energy-optimised cooling algorithm Dantherm's free cooling solutions are total heat managment systems. Climate units are controlled via the Dantherm controller, to maintain the desired temperature - the most energy-optimised way. bullet  bullet  bullet  bullet  bullet 
Free Cooling Savings Saves up to 90 % energy, compared with traditional cooling systems.  bullet bullet bullet bullet bullet
Active cooling: Control of up to 2 external air conditioners bullet bullet bullet bullet bullet
Heating: control of external heater bullet bullet bullet 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. bullet bullet bullet bullet bullet
Emergency cooling In case of AC mains failure Emergency cooling - ensures site uptime When detecting AC mains fall out or failure, free cooling will take over, to ensure sufficient cooling and follow a low energy consumption strategy. Power is drawn from batteries, to prolong site uptime and prevent site overheating. bullet bullet bullet bullet bullet
Installation 810 460 450 400 350
Outdoor installation bullet bullet bullet bullet  
Indoor installation     bullet bullet bullet
Through-wall installation     bullet bullet bullet
Door/floor or cealing installations     bullet bullet bullet
Power supply 810 460 450 400 350
230V AC - 50/60 Hz     bullet bullet bullet
48V DC bullet bullet bullet bullet bullet
24V DC     bullet   bullet
Controller type - Dantherm Flexibox 810 460 450 400 350
Dantherm CC4 Controller for 48 V DC bullet bullet      
Dantherm ACUE 3000 Controller for 24 and 48V DC     bullet bullet bullet
Dantherm TKS 3000 Controller for 230V AC 50/60 Hz     bullet bullet bullet
Dantherm Remote Climate Control bullet bullet bullet bullet bullet
Communication Interfaces - Dantherm Flexibox 810 460 450 400 350
SD Card reader for change of settings and logging bullet bullet      
LCD Display directly on the controller     bullet bullet bullet
Display for connection to the controller bullet bullet      
RS 232 cable connection for laptop or remote monitoring For Dantherm Remote Climate Control and integration into Customer SNMP systems, on-site installation and maintenance support via Laptop.     bullet bullet bullet
RS 484 cable connection for laptop or remote monitoring for Dantherm Remote Climate Control enables remote monitoring and integration into Customers SNMP systems, on-site installation and maintenance support via Laptop. bullet bullet      
Controller features - Dantherm Flexibox  810 460  450 400 350
Stepless and adaptable fan control. Optimal temperature Continuous regulation of the free cooling fan for optimal temperature at minimal energy consumption. Low running costs with energy-efficient, stable cooling. Prolongs fan service life. bullet bullet bullet bullet bullet
Control of up to two Flexibox units. Extendable solution Ability to double cooling capacity at each site via controller. bullet bullet bullet bullet bullet
Control of up to two external air conditioner units. Ensures site uptime Redundancy in case of high ambient temperatures. Ensures site uptime. bullet bullet bullet bullet bullet
Heater control. External heater External heater controlled with on/off signal. Adjustable set points. Energy-saving security measure: Ensures that all temperature regulating devises are coherent. bullet bullet bullet bullet bullet
External air conditioner exercise. Prolongs air conditioner service life If the air conditioner has been inactive, it will be activated every 10 days for 5 min. Ensures operational reliability and prolongs external air conditioner service life - in some cases from 5 to 7-8 years.     bullet bullet bullet
Filter monitor. Surveillance Monitors differential pressure over filter to signal due filter change. bullet bullet bullet bullet bullet
Self test function Easy installation and service Self test is activated dirctly from the control panel. At installation and service: operation-essential functions are checked for correct operation. Quality assures installation and service.     bullet bullet bullet
Log of alarms in controller log of alarms The controller will log any alarms. The recent 200 occurred alarms will be accessable directly on the display or for download to Laptop / surveillance system.     bullet bullet bullet
Log of alarms on SD Card Log of alarms on SD Card An active alarm will be shown on the optional display and logged on the optional SD Card - to give a history log. bullet bullet      
Changeable parameters - Dantherm Flexibox 810 460 450 400 350
Cooling set point     bullet bullet bullet
Heating set point     bullet bullet bullet
High and low temperature alarms     bullet bullet bullet
Filter guard     bullet bullet bullet
NO/NC alarm in- and outputs with pins     bullet bullet bullet
Safety and Surveillance - Dantherm Flexibox 810 460 450 400 350
Fan surveillance of rpm and power consumption bullet bullet bullet bullet bullet
Potential free alarm outputs Customised Four potential free relay alarm outputs. Sends customised alarm output to own system.     bullet bullet bullet
High/low temperature alarm     bullet bullet bullet
Filter guard alarm output. Service visit reminder Issues a filter change signal, i.e. if the filter is clogged. Ensures operational reliability and allows planning of service visits within 1 month.     bullet bullet bullet

Applications

  • Radio base stations
  • Telecom shelters
  • Electronics enclosures
  • DC Powered Sites
  • Hybrid Telecom Sites
  • Automation control cabinets
  • Drive stations
  • Network & computer rooms
  • Power supply rooms

Features and Benefits

Dantherm Flexibox 810, 460, 450, 400 and 350.

  • Extremely energy-efficient: Savings of up to 90 % compared with traditional cooling solutions.
  • Total heat management: Control of external air conditioner-units, heater, motorized dampers. 
  • Stepless fan speed control with surveillance - low running costs and stable operation.
  • Flexibox 810 and 460 for outdoor installation.
  • Flexibox 450, 400 and 350 equals flexible installation at new and legacy sites, indoor, outddor, through wall, on floor, from ceiling.  
  • Optional surveillance system.
  • Dantherm Flexibox Free Cooling collection Flexibox Free Cooling collection
  • Free Air Cooling - F5 air cleaning filter for Flexibox 400 and 450 by Dantherm Free cooling - Flexibox detail of easily serviced and large panel F5 filter.
  • Free Cooling for Telecom - by Dantherm free cooling - Flexibox detail of front service panel
  • Flexibox free cooling by Dantherm Dantherm Flexibox for free cooling - detail of wiring
  • Free cooling for Telecom - Flexibox by Dantherm Free Cooling - Dantherm Flexibox for free cooling - detail of filter guard and fan
  • Flexibox free cooling by Dantherm Dantherm Flexibox for free cooling - detail of through-wall mounting plate.
  • CC4 Controller for Danthem Flexibox 460 and 810 The built-in CC4 controller for Dantherm Flexibox 460 and 810 is powered by 48V DC. The CC4 Controller is a total heat managment controller for energy optimized cooling. The controller takes control of free cooling, emergency cooling, dampers, air conditioners, heater etc - to achieve the set temperature by a minimum use of power. It incorporates SD-Card for re-programming and data logging. The Controller can be connected to the Dantherm Display.
  • Dantherm Flexibox free cooling 460-810 and rain hood The rain hood of the Flexibox 460 and 810 is shielding the unit from rain and snow.
  • Flexibox 460 and 810 filter for free air cooling The filter for Flexibox 460 and 810 is easily changed by means of the sliding and tightening filter bracket.
  • Square Motorized damper for Flexibox free cooling air outlet The Square motorized damper is used to control the air streams in a room or shelter - when utilizing free air cooling.
  • Motorized damper for Flexibox free air cooling outlet The motorized damper for Flexibox air outlet ensures control of airstreams in when utilizing free air cooling.
  • Display for Dantherm Cooling Controllers in the CC family. Wall display for Dantherms controllers in the CC family: CC1-4. The display show in clear symbols status and eveltual alarms. Settings can be changed directly from the display
  • TKS 3000 Controller for Dantherm Flexibox 450-400-350 TKS 3000 controller for Dantherm Flexibox 450-400 and 350. All powered by 230V AC. The TKS Controller is a total heat management controller for energy optimized cooling - it takes control of free cooling, dampers, air conditioners, heater etc. to acieve the set temperature using minimum power.
  • ACUE 3000 Controller for Dantherm Flexibox 450-400-350 ACUE 3000 controller for Dantherm Flexibox 450-400 and 350. All powered by 24 or 48V DC. The ACUE controller is a total heat management controller for energy optimized cooling - it takes control of free cooling, emergency cooling, dampers, air conditioners, heater etc. to acheive the set temperature using minimum power.

Service Manual

Product Data Sheets Flexibox

Product Data Sheets Controllers