724-746-5500 | blackbox.com
724-746-5500 | blackbox.com
Page 7
LVN5250A-R2 Hardware Installation Guide
4. Site Preparation/5. Unpacking the Appliance-
4. Site Preparation
Setup Location, Rack, and Appliance Precautions
• Elevated Operating Ambient—If installed in a closed or multi-unit rack assembly, the operating ambient temperature of the rack
environment may be greater than room ambient. Therefore, consideration should be given to installing the equipment in an
environment compatible with the maximum ambient temperature (Tma) specified by the manufacturer.
Always keep the rack’s front door and all panels and components on the appliances closed when not servicing to maintain
proper cooling.
• Reduced Airflow—Installation of the equipment in a rack should be such that the amount of airflow required for safe
operation of the equipment is not compromised. Leave enough clearance, approximately 25 inches in the front, and 30 inches in
the back of the rack to enable you to access appliance components and allow for sufficient airflow.
• Mechanical Loading—Mounting of the equipment in the rack should be such that a hazardous condition is not achieved from
uneven mechanical loading.
ALL RACKS MUST BE MOUNTED SECURELY.
Ensure that all leveling jacks or stabilizers are properly attached to the rack. If
installing multiple appliances in a rack, make sure the overall loading for each branch circuit does not exceed the rated capacity.
Do not slide more than one appliance out from the rack at a time. Extending more than one appliance at a time may result in
the rack becoming unstable. Install your appliance in the lower part of the rack because of its weight and also for ease in
accessing appliance components.
• 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 Grounding—Reliable grounding of rackmounted equipment should be maintained. Particular attention should be given
to supply connections other than direct connections to the branch circuit (e.g. use of power strips).
Install near appropriate AC outlets, and Ethernet hubs or individual jacks. Be sure to install an AC power disconnect for the
entire rack assembly. The Power Disconnect must be clearly marked. Ground the rack assembly properly to avoid electrical
shock.
5. Unpacking the Appliance
Before you begin:
Verify that the shipped kit includes a power cord, the screws, and the rack clips (shown below) that you will need to install the
appliance in your rack.
Figure 1. Included hardware.
NOTE: Use the hardware supplied with your specific rack if different from the hardware supplied in this kit.
