HP Performance-Optimized Datacenter, 6 m (20 ft) User Guide

Installation 17
o
House panel main
o All fan power branches
NOTE: With non operating servers, HP POD space temperature rate of change should not
exceed 36°F (20° C) per hour. At higher elevation the rate of change must be reduced by
1.8°F (1°C) for every 305 m (1,000 ft) above sea level.
6. Record the cold aisle space temperature through the ECS. The recorded temperature is the starting
temperature of the servers.
7. Monitor the cold aisle temperature. Be sure to stay within the temperature rate of change. If the cold
aisle temperature rises too quickly, then temporarily suspend heating by powering off the fans or
portable heaters. Manually cycle the fans or heaters on and off to stay within the recommended
temperature rate of change.
8. When the cold aisle space temperature has reached a minimum of 50°F (10°C), continue to
maintain this temperature for at least 60 minutes before proceeding to the next step.
9. Close the Starline busway breakers and all branch circuit breakers in house panels A and B. If the
ECS is on auxiliary power, then switch ECS back to house power and disconnect the power source
to auxiliary power transformer.
10. Power up the servers and other IT equipment. Also simultaneously power off any portable heaters, if
used.
When powering up each server unit, HP recommends that heat be equally distributed across the
length of the HP POD. Power on one server unit at a time moving from one rack to the adjacent rack.
Do not power on server units in the same rack before moving to the next adjacent rack.
NOTE: HP POD space temperature rate of change should not exceed 18°F (10°C) per hour
with operating servers.
11. When the cold aisle space temperature reaches 75°F (24°C), switch the water supply flowing
through the HP POD heat exchangers from heating mode to cooling mode.
12. Continue to monitor the cold aisle space temperature, verifying that it does not drop 50°F (10°F) or
below.
13. If the cold aisle space temperature drops to near 50°F (10°C) or below, HP recommends:
o Raising the cooling water supply temperature to a warmer temperature setpoint.
o Reducing the cooling water supply flow by manually turning the main water valve to decrease
water flow.
14. To enable the HP POD interior temperature space to stablize, let the HP POD and the equipment to
run at idle for at least 8 hours.
NOTE: Monitor the ECS when the HP PODs goes into peak operation. You might have to
increase cooling capacity, and if the main water valve is not fully open, then you must adjust
the valve needs.
Commissioning the HP POD
Commissioning your HP POD is an optional service and is customized based on your facility. A typical
commissioning process includes the following tests:
• Tighten the electrical busway connections.