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HP Environmental Base Station installed on a CRAH/CRAC 28

Callout Component Description

and humidity.

Installing the HP Environmental CRAH/CRAC (Dual)

Base Station

The CRAH/CRAC (Dual) Base Station consists of:

• One base station for the supply air—Measures the supply air temperature and humidity

• One base station for the return air—Measures the return air temperature (the average of the six sensors

on the array) and humidity

Installing the HP Environmental Base Station in the supply air stream

1. Install the base station in an unobstructed location under the floor plenum in front of the CRAH/CRAC

supply air stream, to ensure accurate supply air humidity readings.

HP recommends using cable tie wraps to secure the base station to an available support bracket.

NOTE: Do not attach a sensor array to the base station in the supply air stream. The sensors that

measure the temperature and humidity are located inside the base station.

Installing the HP Environmental Base Station in the return air stream

WARNING:

The CRAH/CRAC must be powered down and the fans must be stopped before you

access the return plenum for hardware installation.

1. Using the cable tie wraps, secure the base station to an unobstructed location or support beam in the

CRAH/CRAC return air stream.

2. Connect the data transfer cable from the HP Plenum Rated Sensor Array to the base station.

Installing the HP Plenum Rated Sensor Array in the CRAH/CRAC return air plenum

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HP Data Center Environmental Edge Installationshandbuch Seite 28