HP Performance Optimized Datacenter 20c User Guide - North America

Cooling system 61
End view shown
Item Component Description
1
Heat exchanger Uses chilled facility water to cool the air in the HP POD 20c
2
Drain pan sensor Detects excessive amounts of condensate in the drain pan and sends an alarm
signal to the ECS
3
Drain pan Collects and directs heat exchanger condensate to the condensate drain
4
Condensation drain Removes condensation from the drain tray to the exterior of the HP POD 20c
5
Header drain pan Provides leak detection for the chilled water supply and the chilled water
supply return
Fans
HP POD 20c fans operate at four speeds to maintain the following setpoints programmed in the ECS. The
setpoints are maintained in the following order:
• Differential pressure setpoint between the hot and cold aisles
• Hot aisle temperature setpoint
The fan speed adjusts to maintain both setpoints. Do not manually adjust the fan speed.
IMPORTANT: HP recommends leaving the fans in AUTO mode during normal operation.
Depending on the IT equipment installed in your HP POD 20c, you can choose to change both default
parameters to improve the overall efficiency of your system. To discuss the effects of changing these
parameters for your specific HP POD 20c, contact HP ("HP contact information" on page 77).
The HP POD 20c has 3 banks of 4 fans, for a total of 12 fans per zone. These fans circulate cool air from the
heat exchangers throughout the POD.