GE lp33 20 series Installation Manual

Critical PowerModifications reserved Page 18/43GE_UPS_ISG_LPS_3UL_20K_30K_2US_V010.docx Installation Guide LP33 Series 20 & 30 UL S24.5 VENTILATION AND COOLINGThe heat produced by the UPS is transferred to the environment by its internal fan(s).Fig. 4.5-1 Airflow through the LP33 Series 20 & 30Airflow through the UPSIt is important that the cooling air can freely flowthrough the air inlets and outlets of the UPS.NOTE !Insufficient distances on both sides of theUPS could increase the temperature insidethe UPS.Do not put any object on the top of thecabinet: it might obstruct the air flow.Heat evacuation from UPSroomThe heat must be evacuatedfrom the environment with aproper cooling / ventilationsystem provided by the user.Fig. 4.5-2 Heat evacuation from UPS roomAir volume and losses of the UPSThe approximate minimum air volume needed to evacuate the heat generated by the UPS, for inlettemperature max. 35°C (95°F), for the standard version at inverter nominal load with PF = 0.8 lag. andbattery charged, are the following:UPS model Losses Cooling air flowVFI Mode ECO Mode VFI Mode ECO ModeLP33 Series 20 6,380 BTU/hr1.87 kW1,392 BTU/hr0.41 kW324 CFM550 m3 /h71 CFM120 m3 /hLP33 Series 30 9,656 BTU/hr2.83 kW2,088 BTU/hr0.61 kW490 CFM833 m3 /h106 CFM180 m3 /hNOTE !Even when ECO Mode option is available, the ventilation and cooling system shall berated as for operation in VFI mode.