Table 16. Gaseous contamination specificationsGaseous contamination SpecificationsCopper Coupon Corrosion <300 Å/month per Class G1 as defined by ANSI/ISA71.04-1985.Silver Coupon Corrosion <200 Å/month as defined by AHSRAE TC9.9.NOTE: Maximum corrosive contaminant levels measured at ≤50% relative humidity.Expanded operating temperatureTable 17. Expanded operating temperature specificationsExpanded operating temperature SpecificationsContinuous operation 5°C to 40°C at 5% to 85% RH with 29°C dew point.NOTE: Outside the standard operatingtemperature (10°C to 35°C), the system canoperate continuously in temperatures as lowas 5°C and as high as 40°C.For temperatures between 35°C and 40°C, de-ratemaximum allowable temperature by 1°C per 175 m(1°F per 319 ft.) above 950 m (3,1171 ft.).≤ 1% of annual operating hours –5°C to 45°C at 5% to 90% RH with 29°C dewpoint.NOTE: Outside the standard operatingtemperature (10°C to 35°C), the system canoperate down to –5°C or up to 45°C for amaximum of 1% of its annual operating hours.For temperatures between 40°C and 45°C, de-ratemaximum allowable temperature by 1°C per 125 m(1°F per 228 ft.) above 950 m (3.117 ft.).NOTE: When operating in the expanded temperature range, the performance of the system may beimpacted.NOTE: When operating in the expanded temperature range, ambient temperature warnings may bereported on the LCD panel and in the System Event Log.Expanded operating temperature restrictions1. Do not perform a cold startup below 5 °C2. Install only 94 mm wide heat sinks3. Do not install more than 40 DIMMs4. The following do not support expanded operating temperature range:a. PCIe SSDb. Express flash22
