NIBE Group

Free Cooling is the general term for the technology that uses free cool air for cooling of equipment rooms such as Radio Base Station Cabins and rooms, power transformation rooms or server rooms.

ODU 48EC is specially designed for telecom shelters where there is no space for a DeltaMaster indoor unit. At the moment we offer a capable alternative to DeltaMaster 6L 48EC; the ODU-6L-48EC.

Just like DeltaMaster, the ODU 48EC uses the DeltaManager controller, which apply advanced control algorithms and utilize outdoor and indoor temperature sensors to achieve a constants indoor temperature.

The controller (provided in an IP54 casing) also allows control and monitoring of many other types of site equipment such as dampers, heaters, smoke detectors, Air-Conditioners, power counters etc. All the control algorithms are refined through 20 years of application experience to maximize MTBF (Mean Time Between Failures) and minimizing power consumption. Scenario handling algorithms also take care of power failure, fire and many other situations.

When a system fault is detected, an alarm is triggered and is transferred from the control system to the Operation Centre by software protocols (Modbus TCP) or detected on the hardware contacts. Alarms and site conditions are also logged continuously using a Real Time Clock to provide means of fault diagnostics and analysis through Air-Site’s Network Management System SiteManager.

Air-Site also provides a wide range of accessories, such as heaters, intake-/exhaust cowls, back draught dampers, motorized dampers, roof cowls, grilles, communication products for monitoring etc.

The controller is easily reprogrammed and updated remotely to achieve additional functions or features.

ODU 48EC is designed for telecom systems with 48V supply feed.

Air-Site FreeCooling ODU mounted on the outside of the shelter

More information

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NIBE AirSite User Manual DeltaMaster 48EC

NIBE AirSite User Manual DeltaMaster 230EC