Owners Manual

122
Particulate contamination
Air filtration
NOTE: Applies to data center
environments only. Air filtration
requirements do not apply to IT
equipment designed to be used outside a
data center, in environments such as an
oce or factory floor.
Data center air filtration as defined by ISO Class
8 per ISO 14644-1 with a 95 percent upper
confidence limit.
NOTE: Air entering the data center must have
MERV11 or MERV13 filtration.
Conductive dust
NOTE: Applies to data center and non-
data center environments.
Air must be free of conductive dust, zinc whiskers,
or other conductive particles.
Corrosive dust
NOTE: Applies to data center and non-
data center environments.
• Air must be free of corrosive dust.
• Residual dust present in the air must have a
deliquescent point less than 60 percent relative
humidity.
Gaseous contamination
NOTE: Maximum corrosive contaminant levels measured at ≤50 percent relative humidity.
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.
Expanded Operating Temperature
NOTE: When operating in the expanded temperature range, system performance may be impacted.
NOTE: When operating in the expanded temperature range, ambient temperature warnings may be
reported on the LCD and in the System Event Log.
< 10 percent of annual operating hours 5°C to 40°C at 5 to 85 percent RH with 26°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 40°C for a
maximum of 10 percent of its annual operating
hours.
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).