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Plexus 9000 Planning and Engineering Guide
Planning for Installation
Section 130-200-000
Issue 5, January 24, 2003
Telica, Inc.
6-5
6.1.3.4
HVAC Requirements
In order to maintain the required temperature range, HVAC equipment
should have the capacity to compensate for up to 2730 BTUs per hour
(using DS-1 and triple DS-3 modules) or 4505 BTUs per hour (using octal
DS-3/STS-1 modules) for each installed Plexus 9000 shelf.
To calculate the required HVAC capacity, determine the wattage of all
installed equipment, and then use the following formula:
Watts x 3.413 = BTUs/hour
6.1.3.5 Environmental
Requirements
specifies the required environmental conditions for the
Plexus 9000. Special requirements necessary to obtain these conditions
must be considered.
Table 6.1-A. Environmental Specifications
Environmental
Conditions
Temp. (°F)
Min/Max
Temp. (°C)
Min/Max
Relative
Humidity
Standard temperature
operation
+41 to +104
+5 to +40
Up to 85%
non-condensing
Standard temperature
short term operation
+23 to +122
-5 to +50
Up to 95%
non-condensing
Standard temperature
storage
-40 to +158
-40 to +70
Up to 95%
non-condensing
Operational altitude:
From 200 feet below sea level to 13,000 above
sea level.
Notes
:
1. Temperature ranges refer to the conditions 5 feet above the
bottom of the equipment rack in which the unit is mounted, and
15 inches in front of the unit.
2. Short-term operation refers to a period of not more than 96
consecutive hours, with a total of not more than 15 days per year.
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