IBM Rear Door Heat eXchanger V2, Installation And Maintenance Manual

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Routing and securing the hoses
Use one of the following procedures, depending on whether the rack is in a
raised-floor environment.
Important: To help maintain optimum performance of the Rear Door Heat
eXchanger and provide proper cooling for all rack components, you
must always take the following precautions:
v Install filler panels over all unoccupied bays.
v
Route signal cables at the rear of the rack so that they enter or exit
the cabinet through the top and bottom air baffles.
v Bundle signal cables together in a rectangle so that the air-baffle
sliders are closed as far as possible. Do not bundle signal cables
together in a circular formation. For more information, see “Routing
cables through the upper and lower air baffles” on page 42.
Raised-floor environment
The following illustrations show routing and securing the hoses in a raised-floor
environment for individual racks and adjacent racks.
Note: Both illustrations show the view of the rack from the top, looking down.
Figure 33. Routing and securing the hoses in a raised-floor environment for individual racks
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Rear Door Heat eXchanger V2: Installation and Maintenance Guide