HP Performance Optimized Datacenter 20c User Guide - North America

Environmental control system 53
5.
Note the current calibration factor.
6. Enter 0.1 as the new calibration factor.
7. Select OK.
8. Select Calibrate Chilled Water Pressure Sensor when the button reads Available.
9. Enter the original calibration factor that you noted down in step 5.
10. Select Save to exit.
Calibrating the differential pressure sensors
This option is available only when all fans and the IT load are powered off and there is no air flowing inside
the HP POD 20c.
To calibrate the chilled water pressure sensors:
1. Power down the POD. For more information, see "Power down procedure (on page 72)."
2. Set the fan speed for each fan control zone to Manual mode and 0% fan speed. For more information,
see "Setting the fan controls for each fan control zone (on page 50)."
3. Open the doors for five minutes to equalize the pressure between the hot and cold aisles.
4. Select Calibrate Differential Pressure Sensors.
5. Select Save.
6. Set the fan speeds to Auto mode.
Enable/disable power management
The current power management setting appears on the Enable/disable Power Management button. To
enable or disable power management in the ECS:
1. Select Enable/disable Power Management.
2. Select Save to store the new parameters in the system configuration file.
Setting the IP address for each power meter
The current, preset static IP address appears above the Change IP address button. Change the IP address of
a power meter to network multiple meters together or to resolve an IP address conflict.
To configure a power meter IP address:
1. Select IP Address Management for one of the following power meters:
o Smissline A
o Smissline B
o Feeder A
o Feeder B
A keypad appears.
2. Enter the IP address.
3. Select Save to store the new parameters in the system configuration file.