HP Performance Optimized Data Center (POD) 20cp Guide D’Installation Rapide
Site requirements 13
•
Do not treat the water with softeners. Softeners can produce foam, which affects the operation of the
unit.
•
Do not use well water, industrial water, water from cooling circuits, or water contaminated by any
chemicals or bacteria.
•
Do not add potential irritants to the water, such as disinfectants or anti-corrosive compounds.
•
The manufacturer recommends installing an in-line filter for the water supply. It is your responsibility to
determine if a filter should be installed, and if so, its location. The filter cannot be installed inside the HP
POD 20c and must be compatible with the type of humidifier that is installed.
POD 20c and must be compatible with the type of humidifier that is installed.
For more information, see the Operations and Maintenance Manual or the HP Performance Optimized
Datacenter 20c Maintenance and Service Guide.
Drainage
Requirement
Location
Specification
Condensate drains
Hot aisle side (2)
3.18 cm (1.25 in) drain line and 26.5 lpm (7 gpm) max
Chill Water Header drains Cold aisle side (2)
3.18 cm (1.25 in) drain line and 26.5 lpm (7 gpm) max
Humidifier drain
Cold aisle side (1)
3.18 cm (1.25 in) drain line and 26.5 lpm (7 gpm) max
Chilled water supply
The following are the water quality requirements and specifications:
•
Closed-loop water must not contain any lime scale deposits or loose debris.
•
The temperature of the chilled water supplied to the HP POD 20c must be 12ºC to 24ºC (55ºF to 75ºF).
CAUTION:
Freezing water can cause a blockage and damage to the unit. In outside locations
that are subject to freezing temperatures, an additive such as glycol might be necessary to lower
the freezing point. However, since the heat transfer potential of water with glycol is lower, the HP
the freezing point. However, since the heat transfer potential of water with glycol is lower, the HP
POD 20c must be de-rated accordingly.
IMPORTANT:
The chilled water system piping and heat exchangers must be drained completely,
and then purged using compressed air when storing or transporting at or below freezing
temperatures.
temperatures.
IMPORTANT:
Operating the chilled water system at the higher end of the acceptable range
decreases the overall thermal capacity of the POD.
Acceptable water quality specifications
Water must be maintained per the following acceptable water quality standards.
Water must be maintained per the following acceptable water quality standards.
Parameter
Range
pH
8.0–10
Specific conductance at 25ºC (77ºF) 10–2500 µmhos
Alkalinity ("M" as CaCO
Alkalinity ("M" as CaCO
3
)
150–1000 ppm
Sulfur (SO
4
)
0–150 ppm
Chloride (Cl)
0–100 ppm
Hardness (CaCO
3
)
0–350 ppm