Emerson Liebert iCOM Manual De Usuario

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Operation
Liebert
®
 iCOM
®
62
Figure 51 Return Compensation control band
The return compensation setpoint will proportionally increase as the return temperature deviates 
below S114 “Return Compensation Setpoint.” The compensation proportional band is set on line S115. 
The compensating proportional band defines the maximum value the air temperature setpoint will 
increase during return compensation. See Figure 51.
Figure 52 Return Compensation setpoint deviation
Supply Compensation: Supply temperature compensation allows units to automatically adjust the 
supply air temperature setpoint when the unit has reached its maximum airflow of 100% and the cold 
aisle temperature remains above the cold aisle setpoint. In this situation, the temperature 
compensation feature will proportionally decrease the supply air setpoint until the Inlet rack 
temperature reaches the setpoint.
-100%
S115 Return
Compensation Band
S114 Return
Compensation Setpoint
S115 Return Compensation Value
Temperature Setpoint
(Sensor set to either Supply Sensor 
or Remote Sensor )
New air temperature 
setpoint modified by 
compensation
Return 
Compensation 
Proportional 
Band
Return 
Compensation 
Maximum 
Value