Location Selection; Ups Room; External Battery Room (Additional Conditions For Ups With Integrated Batteries); Storage - Liebert NX 30 User Manual

Installing the UPS Module

1.4 Location Selection

The UPS and external battery cubicles should be installed on a concrete or other noncombustible surface.
Ensure that the floor is capable of supporting the weight of the UPS and associated devices.

1.4.1 UPS Room

The UPS is designed to be installed indoors. It should be installed in a clean environment with adequate ventilation in order to
ensure that the environmental parameters remain within the specified operating range (see Table 8-2). For example, the UPS
should not be installed in environments that do not conform to its design requirements, such as underpasses or outdoor locations
without air-conditioning.
The UPS uses forced cooling by internal fans. Cooling air enters the UPS through the ventilation grills at the front of the cabinet and
is expelled through the ventilation grills in the rear of the cabinet. Do not obstruct the ventilation holes.
We advise installing the UPS in an equipment room or power distribution room. If necessary, install an extractor fan system in order
to aid cooling-air flow and avoid overheating in the room. The UPS should be fitted with an air filter when it is operated in a dusty
environment.

1.4.2 External Battery Room (Additional Conditions for UPS with Integrated Batteries)

Batteries generate significant quantities of hydrogen and oxygen as they near the end of their re-charge cycle. Therefore the fresh
air volume of the battery installation environment must meet the EN50272-2001 requirements.
The ambient temperature of the battery must be stable. Ambient temperature is a major factor in determining battery capacity and
life. The nominal operating temperature of the battery is 20°C. Operating above this temperature will reduce the battery life,
whereas operating below it will reduce the battery capacity. If the average operating temperature of the battery rises from 20ºC to
30ºC, the service life of the battery will be reduced by 50%. If the operating temperature of the battery is above 40ºC, the battery
service life will decrease exponentially. In a normal installation, the battery temperature is maintained between 15°C and 25°C.
Keep batteries away from heat sources and ventilation holes.
If an external battery is used, a battery protection device (for example, fuse or circuit breaker) must be installed. The battery
protection device must be installed as close to the battery as possible, and the cabling distance between the battery protection
device and the battery must be kept to a minimum.

1.4.3 Storage

If the UPS is not installed immediately, it must be stored in a cool, dry place (see Table 8-2). The battery must also be stored in a
cool, dry place with good ventilation. Ideally, the equipment should be stored at a temperature between 20ºC and 25ºC. For UPS
modules with integrated batteries, the battery storage conditions shall apply.
During storage, charge the battery periodically in accordance with the battery manufacturer instructions. During the charging process,
temporarily connect the UPS to the mains and activate the battery for the time necessary to recharge the battery.
User Manual 10H52192UM60 - Rev. 1 - 09/2011
Note
Warning
Liebert NX
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