HP Modular Cooling System - Manual (Page 46)

Cooling performance parameter settings 46
Server intake
temperature Server exhaust
temperature
Top 24.5°C (76.1°F) 38.8°C (101.8°F)
Middle 24.8°C (76.6°F) 39.1°C (102.4°F)
Bottom 25.1°C (77.2°F) 40.3°C (104.5°F)
Average 24.8°C (76.6°F) 39.4°C (102.9°F)
Adjusting the cooling air flow provided by the MCS unit
To adjust the cooling air flow provided by the MCS unit while in Temperature Control Auto mode:
1. Click the Setup tab (on page 21 ).
2. Click the Advanced tab (on page 28 ).
3. Enter a Delta Temperature For Minimum Fan Speed.
4. Enter a Delta Temperature For Maximum Fan Speed.
Server intake temperature provided by the MCS unit
The management module constantly compares the server intake temperature to the range calculated from
the Server Intake Temperature Set Point.
• If the server intake temperature is above the Server Intake Temperature Set Point, the opening
percentage of the water valve increases to allow more cold water to enter the heat exchanger unit.
• If the server intake temperature is below or equal to the Server Intake Temperature Set Point, the
opening percentage of the water valve decreases to reduce the amount of cold water entering the
heat exchanger unit.
Setting and controlling the server intake temperature
To adjust the Server Intake Temperature:
1. Click the Setup tab (on page 21 ).
2. Click the Intake Temp tab (on page 22 ).
3. Enter a Server Intake Temperature Set Point.
Temperature Control settings
On the Advanced screen, the administrator can change the temperature control modes for the
management module.
IMPORTANT: Temperature Control Manual mode is for service and troubleshooting only and is
not to be used in a production environment.
• Temperature Control Auto mode—Used for operating the MCS unit after a satisfactory water flow
rate has been reached.
In this mode, the MCS unit operates automatically, according to the settings you have assigned to
the following parameters:
o Minimum Fan Speed