Particulate contamination Specifications
NOTE: This condition applies to data center and
non-data center environments.
Corrosive dust
• Air must be free of corrosive dust.
• Residual dust present in the air must have a
deliquescent point less than 60% relative humidity.
NOTE: This condition applies to data center and
non-data center environments.
Table 33. Gaseous contamination specifications
Gaseous contamination Specifications
Copper coupon corrosion rate <300 Å/month per Class G1 as defined by ANSI/
ISA71.04-1985.
Silver coupon corrosion rate <200 Å/month as defined by AHSRAE TC9.9.
NOTE: Maximum corrosive contaminant levels measured at ≤50% relative humidity.
Expanded operating temperature
Table 34. Expanded operating temperature specifications
Expanded operating temperature Specifications
Continuous operation 5°C to 40°C at 5% to 85% RH with 29°C dew point.
NOTE: Outside the standard operating temperature
(10°C to 35°C), the system can operate continuously
in temperatures as low as 5°C and as high as 40°C.
For temperatures between 35°C and 40°C, de-rate
maximum allowable dry bulb temperature by 1°C per 175
m above 950 m (1°F per 319 ft).
< 1% of annual operating hours –5°C to 45°C at 5% to 90% RH with 29°C dew point.
NOTE: Outside the standard operating temperature
(10°C to 35°C), the system can operate down to –5°C
or up to 45°C for a maximum of 1% of its annual
operating hours.
For temperatures between 40°C and 45°C, de-rate
maximum allowable temperature by 1°C per 125 m above
950 m (1°F per 228 ft).
NOTE: When operating in the expanded temperature range, system performance may be impacted.
NOTE: When operating in the expanded temperature range, ambient temperature warnings maybe
reported on the LCD panel and in the System Event Log.
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