IBM Rear Door Heat eXchanger V2, Installation And Maintenance Manual

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Chapter 2. Heat exchanger planning, specifications, and
requirements
This chapter provides information about planning the installation, and heat
exchanger specifications, parts, tools, and suppliers.
Planning considerations
As you plan the installation of the heat exchanger, include the following
considerations.
v
Providing chilled, conditioned water that meets the specifications that are outlined
in “Control and conditioning of the secondary cooling loop” on page 12.
v
Procuring and installing the water supply system that is suitable for your data
center. Details are provided in “Water delivery specifications for secondary loops”
on page 14.
v Providing a redundant secondary cooling loop water supply or enough room air
conditioning to handle a tolerable heat load if the function of one or more of the
heat exchangers is compromised. For example, if the rear door is opened for
rack maintenance or conditioned water supply to the door is stopped, the rack
heat load is sent out into the room and must be handled by room air conditioning
until the conditioned water supply is restored.
v
Providing floor or ceiling tile cutouts or protective coverings to avoid tripping
hazards on non-raised floors as part of hose management.
CAUTION:
or
>32 kg (70.5 lb)
or
32-55 kg (70.5-121.2 lb)
The weight of this part or unit is between 32 and 55 kg (70.5 and 121.2 lb). It
takes three persons to safely lift this part or unit. (C010)
© Copyright IBM Corp. 2011, 2013
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