Ventilation And Cooling - GE lp33 20 series Installation Manual

4.5

VENTILATION AND COOLING

The 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 & 30
Heat evacuation from UPS
room
The heat must be evacuated
from the environment with a
proper cooling / ventilation
system provided by the user.
Air volume and losses of the UPS
The approximate minimum air volume needed to evacuate the heat generated by the UPS, for inlet
temperature max. 35°C (95°F), for the standard version at inverter nominal load with PF = 0.8 lag. and
battery charged, are the following:
UPS model
LP33 Series 20
LP33 Series 30
NOTE !
Even when ECO Mode option is available, the ventilation and cooling system shall be
rated as for operation in VFI mode.
Modifications reserved
GE_UPS_ISG_LPS_3UL_20K_30K_2US_V010.docx
Losses
VFI Mode ECO Mode
6,380 BTU/hr 1,392 BTU/hr
1.87 kW
9,656 BTU/hr 2,088 BTU/hr
2.83 kW
Critical Power
Airflow through the UPS
It is important that the cooling air can freely flow
through the air inlets and outlets of the UPS.
NOTE !
Insufficient distances on both sides of the
UPS could increase the temperature inside
the UPS.
Do not put any object on the top of the
cabinet: it might obstruct the air flow.
Fig. 4.5-2 Heat evacuation from UPS room
VFI Mode
324 CFM
0.41 kW 550 m
490 CFM
0.61 kW 833 m
Cooling air flow
ECO Mode
71 CFM
/h 120 m /h
3 3
106 CFM
/h 180 m /h
3 3
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Installation Guide LP33 Series 20 & 30 UL S2