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Installation
2
2.0 INSTALLATION
2.1 Room Preparation
The room should be well insulated and must have a sealed vapor barrier. The vapor barrier in the
ceiling can be a polyethylene film type. Use a rubber or plastic base paint on concrete walls and floors.
Doors should not be undercut or have grilles in them.
Outside (or fresh) air should be kept to an absolute minimum. Outside air adds to the heating, cool-
ing, humidifying and dehumidifying loads of the site. It is recommended that outside air be kept
below 5% of the total air circulated in the room and be preconditioned.
2.2 Equipment Inspection
Upon arrival of the unit, inspect all items for visible and concealed damage. Damage should be imme-
diately reported to the carrier and a damage claim filed with a copy sent to Liebert or to your sales
representative.
2.3 Location Considerations
The Liebert Challenger ITR can sit on top of an accessible elevated flooring system. It may be neces-
sary to furnish additional pedestal support below the unit to ensure maximum structural support (see
Table 1). A separate floor stand for the unit may be used as support, independent of the elevated floor
and installed prior to the flooring system.
Provide approximately 34" (864 mm) service clearance in the front and rear of the unit.
The unit can be installed between equipment racks or at the end of a row of racks. Consideration
should be given before installing refrigerant and liquid lines next to, under or above electronic equip-
ment. Avoid placing the Liebert Challenger ITR in an alcove. Placing units too close together will
reduce the effectiveness of the air distribution.
2.3.1 Remote Sensor Installation Location
The remote temperature and humidity sensor should be installed in the cold aisle in front of the
equipment to be cooled. It should be mounted at the farthest point from the cooling unit that supply
air needs to reach but still within the unit's area of influence. The sensor should be installed at the
highest point that equipment will draw in cooled air.
2.4 Equipment Handling
NOTE
Locate and remove shipping screw on fan motor base.
!
WARNING
Risk of equipment tipping over. Can cause damage, injury or death.
The instructions listed below must be adhered to when handling this unit with or without the
skid. There is the potential for this unit to tip over if handled improperly.