CRAC/CRAH Sensor Hardware Installation Manual
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8. Secure excess wiring.
a. Bundle and secure excess wiring with zip ties.
b. Secure bundle to existing wires in the unit.
Continue to Validating and Commissioning the Installation to validate and commission
the installation.
Downflow Units – Raised Floor
Figure 4 shows a downflow CRAC/CRAH installed on a raised floor with a stand on the
subfloor supporting the unit.
The return air (hot) enters the top of the CRAC/CRAH (or via optional plenums – not
shown) where the cooled air discharges through the bottom of the unit.
The supply sensor installs through a hole in the bottom of the unit and secures to the leg
of the stand with a plenum-rated, fire code compliant, zip tie (purple).
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