APC ACRA100 Installation Manual download pdf (Page 30)

Pumped Refrigerant System Operation and Maintenance22

Identify the cooling modules

Path: Main > CMs In Network > Unconfigured CMs

To add an unconfigured CM to the group: Physically note on paper the temporary ID number as it

appears on the display of the CM once power is applied.

Bring the note with the number back to the RDU and proceed to configure the CM using the temporary

ID number to identify the CM from the list that appears on the RDU display interface.

Note: Be careful to add only CMs that are physically piped to the RDU. Do not add CMs that

are piped to other RDUs.

Note: Name the CM according to the three digit protocol:

• First digit is the RDU #

• Second digit is the Group #

• Third digit is the CM #

If there are unassigned CMs, the screen will show a list of the CMs by identification number. To assign a

CM to the group, select the CM. You must enter the Admin Password to continue to the next screen.

RDU ID. The unique identification number of the RDU. Range: 1 through 4. This value is used to

identify the RDU from which CMs will receive refrigerant from the RDU.

Group #. Use the up and down arrow buttons to scroll to the group number you want.

Range: 1 through 15. This value is used to identify which CMs are to operate as a group.

CM #. Use the up and down arrow buttons to scroll to the number you want to associate to the CM you

are adding. Range: 1 through 15. The value selected uniquely identifies a CM within a set of CMs having

the same RDU ID and Group # parameters.

Assign CM. Selecting Assign CM opens the next screen. Select Yes to add the CM to the group.

Pool Empty. If this screen appears when you select Unconfigured CM, there are no unassigned CMs.

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APC ACRA100 Installation Manual Page 30