Cooling system
HP POD 40c G2 cooling system theory of operation
CAUTION: Using contaminated supply water can cause decreased cooling capacity or disruption in service. The supply water must meet the guidelines stated in the HP Performance Optimized Datacenter 40c G2 Site Preparation and Requirements Guide. Damage caused by contaminated supply water is not covered by the warranty.
The HP POD 40c G2 has 12 heat exchangers configured into 6 zones that maintain temperature and cool the equipment installed in the HP POD 40c G2. The HP POD 40c G2 receives chilled water from your facility, cycles the water through the heat exchangers to cool the air, and then the fans circulate the cool air throughout the HP POD 40c G2.
A predetermined differential pressure setpoint between the hot aisle and the cold aisle is factory set. Do not alter the setpoint without consulting HP. The fan speeds are regulated to maintain the differential pressure between the hot and cold aisle and hot aisle temperature. For more information, see "Fans (on page 59)."
The HP POD 40c G2 chilled water flow rate is regulated by the ECS Flow Control Valve that is installed on the POD chilled water return header. The ECS system opens and closes this valve to maintain the differential temperature between the POD supply and return chilled water header temperature.
For more information on the cooling system, see the HP Performance Optimized Datacenter 40c G2 Maintenance and Service Guide.
Water supply temperature
The temperature of the water supplied to the HP POD 40c G2 must be 13ºC to 24ºC (55ºF to 75ºF). Freezing water can cause a blockage and damage to the POD.
Cooling system 56