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AIR BOOSTER 2
EN/10.2018/IT30I © STULZ SpA – all rights reserved
Components lay-out
Operating methods
Temperature control
For Air Booster 2 with their own control (type BAF60FD220), the control of the fan speed depends
on the measured temperatures. Three temperature sensors have to be installed in the high part, the
middle and in the lower part of the rack. The fan speed of the Air Booster 2 is proportional to the
average temperature of the three temperature sensors of the rack, or is proportional to the maximum
temperature detected from the sensors, according to the controller settings. According to this
working mode, the unit has to have the control inside and it works according to the basic principle
that the air delivered to the rack is directly proportional to the desired set point. The controller
ensures smooth transition of fan speed with reference to the set point. Air Booster 2 floods the cold
aisle on the front of the server rack with sufficient cold air as desired.
Pressure control (optional)
To enable the pressure control mode is an external pressure control module (option ACTPCMP)
in combination with an Air Booster 2 without own control (type BAF60FN220) required. The fan
speed is proportional to the difference between the pressure set point and the value measured by
the module and it's controlled by the accessory ACTPCMP. The server temperature management
requires constant pressure conditions in the data centre. In the best of cases, the air is conveyed
from the cold aisle exclusively by the server fans through the rack and not by a pressure difference
between cold aisle and warm aisle.
The pressure control is a pressure limitation, to protect the fans integrated in the servers against
overpressure.
Damper
Keypad
Fan
Connections interface
Main switch
Electrical box
