Table of Contents
Advertisement
To dampen local pressure variations and give accurate ambient pressure readings, the pressure sampling
tubes consist of multiple small holes perforating a metal tube. Each tube is 18 inches long. One end is
sealed and the other end has a hose barb.
Installing the pressure sampling tubes
The parts used to perform this procedure are located in the HPE ARCS Accessory Kit and the HPE ARCS
Rack Chunk Installation Kit.
To install the pressure sampling tubes:
1. To identify the IT racks cooled by each individual HPE Adaptive Rack Cooling System, looking to the
left and right of the HPE Adaptive Rack Cooling System, examine at the final HPE Adaptive Rack
Cooling System and rack layout drawing. The farthest IT racks could be any of the following
configurations:
•
The two IT racks on either side of the HPE Adaptive Rack Cooling System
•
One rack farther away from the HPE Adaptive Rack Cooling System on either side (four IT racks
total)
•
A combination of both of the preceding configurations, with two IT racks on one side and a single IT
rack on the other side.
To ensure smooth control, when multiple HPE Adaptive Rack Cooling Systems are located in a row of
IT equipment, do not overlap the pressure measurement zones. Connect only one set of pressure
measurement tubes to an IT rack from one HPE Adaptive Rack Cooling System. Do not connect
multiple pickups to an IT rack from different HPE Adaptive Rack Cooling Systems. In the specific case
of an HPE Adaptive Rack Cooling System mounted at the end of an aisle with no IT racks to one side,
join the two pressure tubes for that HPE Adaptive Rack Cooling System with a tee and route it to the
farthest IT rack on the side of the HPE Adaptive Rack Cooling System that is cooled by that HPE
Adaptive Rack Cooling System, up to two racks away.
HPE Adaptive Rack Cooling System configured between two IT racks with each IT rack
receiving a pressure tube on the cold aisle side
Configuration
21
Advertisement
Table of Contents
