Emerson XDR Manual Do Utilizador

Refer to site-specific drawings for general locations of the piping connections. The drawings should 

specify where the piping connects to the Liebert XDR.

Stationary air conditioning, refrigeration, heat pump equipment and stationary fire protection sys-

tems in the European Community market and operating with fluorinated greenhouse gases (f-gas), 

such as R407C, R-134a, R410A, must comply with the F-Gas Regulation: (EC) No. 842/2006 (F-gas). 

The regulation prohibits, among other actions, venting fluorinated greenhouse gases to the atmo-

sphere.
The F-Gas Regulation requires operators to use all measures that are technically feasible and do not 

entail disproportionate cost to prevent leakage of these gases, to test for leakage regularly and to 

recover f-gas before disposing of equipment, as well as during service and maintenance.
Refer to the full regulation for additional details.

If possible, connect the Liebert XDR modules to Liebert XDPs or Liebert XDCs in an interlaced 

configuration (see Figure 12). In an interlaced configuration, half the cooling modules in an aisle are 

connected to one Liebert XDP or Liebert XDC and the other half in that aisle are connected to another 

Liebert XDP or Liebert XDC. Interlacing the connection piping will keep half the Liebert XDR 

modules operating and maintain cooling in the conditioned space should one of the Liebert XDP or 

Liebert XDC units fail.
However, if this is not possible, connect the Liebert XDR modules in a non-interlaced configuration 

(see Figure 13).

Return

Supply

Liebert XDP/

Liebert XDC A

Liebert
XDR A

Liebert
XDR B

TOP VIEW

Return

Supply

Liebert XDP/

Liebert XDC B

NOTE: Line size does NOT 
indicate pipe size difference .

Liebert
XDR B

Liebert
XDR B

Liebert
XDR B

Liebert
XDR A

Liebert
XDR A

Liebert
XDR A

DRAWING IS
NOT TO SCALE