Nordic Blue free cooling units has four standard operation modes. (The change between the modes is automatic and follows the temperature)
- Free cooling
- Temperature compensation (optional)
- Shut down
- Heating (optional)
Free cooling
The Nordic Blue units use the ambient air to cool down the room or shelter. In free-cooling mode the external damper will be open and the ambient air will be drawn through the filter by the internal fan and thereby cool the cabin / shelter down. The Nordic Blue units are creating an overpressure in the shelter and push the air through the filter and into the cabin. This means that only filtered air enters the room and results in a clean - filtered environment in the cabin. The motorized damper on the opposite side of the cabin will make sure that there will be a low pressuredrop during free cooling.
Temperature compensation
When the outside air temperature falls to an extremely low level, the Nordic Blue unit will start temperature compensation. This means that some of the warm air from the cabin will be mixed with the outside air. This is done to ensure that the intake air into the room is not too cold, and to avoid kuldechok to the hot equipment. This function is not standard on all Nordic Blue units.
Shut down
When the temperature is below the desired set point the external damper will close to protect the shelter from winds from outside and the fans stop.
Heating
Heating can be necessary in some areas and therefore some of the Nordic Blue units are prepared for connection of an external heating element
The Nordic Blue control unit communicates smoothly with third-party software such as overall surveillance systems that manage alarms and warnings from several base stations. |
