Tools and materials 
The following tools are required for installation: 
•  Phillips screwdriver 
•  10-mm hex-nut driver 
The following items are supplied with the rack: 
•  Screws 
•  Hex nuts 
•  Cage nuts 
•  Cage nut-fitting tool 
 
Selecting a site 
 WARNING:  To prevent fire or electric shock, 
install the unit in a temperature- and 
humidity-controlled indoor environment, free 
of conductive contaminants. 
When selecting a site, consider the following factors: 
•  Elevated operating ambient temperature—If the 
equipment is installed in a closed or multi-unit rack 
assembly, the operating ambient temperature of the rack 
environment might be greater than room ambient 
temperature. Install the equipment in an environment 
compatible with the operating temperature. 
•  Reduced air flow—In the rack, the rate of air flow 
required for safe operation of the equipment must not be 
compromised. 
•  Circuit overloading—Consideration should be given to 
the connection of the equipment to the supply circuit and 
the effect that overloading of the circuits might have on 
overcurrent protection and supply wiring. Appropriate 
consideration of equipment nameplate ratings should be 
used when addressing this concern. 
•  Reliable earthing—Reliable earthing of rack-mounted 
equipment should be maintained. Particular attention 
should be given to supply connections other than direct 
connections to the branch circuit, such as the use of 
power strips. 
•  Electrical requirements—All models require a dedicated 
(unshared) branch circuit, suitably rated for the specific 
UPS as stated in "Input specifications" in the user guide. 
 
Readying the equipment 
1.  Check the battery recharge date specified on the label 
that is affixed to the shipping carton. 
 IMPORTANT:  Do not use the battery if the recharge 
date has passed. If the date on the battery recharge 
date label has passed without the battery being 
recharged, contact an HP authorized service 
representative for directions. 
2.  Transport the packaged unit to its installation location. 
3.  Unpack the equipment near the rack where the unit will 
be assembled. 
 CAUTION:  Always plan the rack installation so that 
the heaviest item is on the bottom of the rack. Install 
the heaviest item first, and continue to populate the 
rack from the bottom to the top. 
 
Installing the mounting rails 
 WARNING:  To reduce the risk of personal 
injury or damage to the equipment, be sure 
that: 
•  The leveling feet are extended to the 
floor. 
•  The full weight of the rack rests on the 
leveling feet. 
•  The stabilizing feet are attached to the 
rack if it is a single-rack installation.  
•  The racks are coupled together in 
multiple-rack installations.  
•  Only one component is extended at a 
time. A rack may become unstable if 
more than one component is extended 
for any reason. 
 
 NOTE:  If preparing the rails for integrated shipping, 
follow the same instructions as in "Installing the UPS." 
 NOTE:  Mounting hardware for square- and round-
holed racks is included in the UPS kit. 
1.  Loosen the hex nuts, and extend the brackets to the 
desired length.