Particulate contamination
Specifications
NOTE:
This condition 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 office or
factory floor.
NOTE:
Air entering the data center must have MERV11 or MERV13
filtration.
Conductive dust
Air must be free of conductive dust, zinc whiskers, or other conductive
particles.
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 13. 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.
Standard operating temperature specifications
Table 14. Standard operating temperature specifications
Standard operating temperature
Specifications
Continuous operation (altitudes under 950 m / 3,117 ft)
10°C to 35°C (50°F to 95°F), avoiding direct sunlight
Expanded operating temperature specifications
Table 15. Expanded operating temperature specifications
Expanded operating temperature
Specifications
≤10% of annual operating hours
5°C to 40°C (41°F to 104°F), avoiding direct sunlight on the equipment
NOTE:
Outside the standard operating temperature (10°C to
35°C / 50°F to 95°F), the system can operate for a maximum of
10% of its annual operating hours in temperatures as low as 5°C
(41°F) and as high as 40°C (104°F).
Installation and Service Manual
Technical specifications
13
