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Environment
Temperature and Humidity
A 2104 has the following environmental limits:
Operating
Recommended
operating point
Recommended
operating range
Nonoperating
Storing
Shipping
Notes:
1. The recommended operating temperature is 22°C (72°F) or lower. At lower
temperatures, the risk of failure in the unit is reduced. If the operating temperature
is above 22°C (72°F) for long periods of time, the 2104 is exposed to a greater risk
of failure from external causes.
2. The nonoperating environment must not exceed the operating environment limits for
longer than 60 days.
3. The storage environment must not exceed the operating environment limits for
longer than 1 year.
4. Substantial deviations from the recommended operating range, in either direction, if
sustained for extended periods of time, will expose the 2104 to greater risk of failure
from external causes.
Altitude
Altitude (from sea level) limits for both models are:
Operating: 0 to 2133 m (0 to 7000 ft)
Nonoperating: −304.8 m to 12 192 m (−1000 to 40 000 ft)
Note: The upper dry bulb temperature limit of the rack-mounted unit is lowered by 1°C
14
2104 Models DU3 and TU3 Hardware Technical Information
Air Temperature
10°C to 40°C
(50°F to 104°F)
22°C
(72°F)
20°C to 25°C
(68°F to 77°F)
10°C to 52°C
(50°F to 126°F)
1°C to 60°C
(34°F to 140°F)
−40°C to 60°C
(−40°F to 140°F)
(2°F) for every 137 meters (450 feet) above 915 meters (3000 feet). The upper
wet bulb temperature limit is lowered by 1°C (2°F) for every 274 meters (900
feet) above 305 meters (1000 feet).
Relative Humidity
8% to 80%
noncondensing
45%
40% to 50%
8% to 80%
noncondensing
5% to 80%
noncondensing
5% to 100%
condensing but
not precipitating
Maximum Wet Bulb
27°C (80°F)
27°C (80°F)
29°C (84°F)
29°C (84°F)
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