Liebert Refrigerant Distribution Unit XDP - Manual (Page 17)

Piping
11
2.0 P
IPING
2.1 European Union Fluorinated Greenhouse Gas Requirements
Stationary air conditioning, refrigeration, heat pump equipments and stationary fire protection sys-
tems in the European Community market and operating with fluorinated greenhouse gases (f-gas),
such as R407C, R134a, 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 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.
2.2 Connection Sizes
The copper pipe connections on the Liebert XDP are:
2.2.1 Recommended Pipe Size
Connect the main pipes between the Liebert XDP and the Liebert XD cooling modules according to
site specific documentation and the configuration guide for the Liebert XD system.
Elbows and restrictions must be minimized to get good fluid flow.
Building Chilled Water Supply 2-5/8" OD
Building Chilled Water Return 2-5/8" OD
Refrigerant Supply 1-1/8" OD
Refrigerant Return 2-1/8" OD
Table 3 Supply, return pipe sizes for refrigerant loop
Pipe Function Size / Equivalent Pipe Length
Liebert XDP supply line, from Liebert XDP supply
to farthest Liebert XD cooling module
1-1/8" OD for lengths up to 60 feet
1-3/8" OD for lengths over 60 but less than 175 feet
Liebert XDP return line, from farthest Liebert XD cooling
module to Liebert XDP return
2-1/8" OD for lengths up to 60 feet
2-5/8" OD for lengths over 60 but less than 175 feet
From any model Liebert XDO/Liebert XDH supply
to supply line of Liebert XDP
1/2" OD for lengths up to 10 feet
7/8" OD for lengths over 10 but less than 25 feet
From any model Liebert XDO/Liebert XDH return
to return line of Liebert XDP
7/8" OD for lengths up to 10 feet
1-1/8" OD for lengths over 10 but less than 25 feet
From any model Liebert XDV/Liebert XDCF supply
to supply line of Liebert XDP
1/2" OD for lengths up to 10 feet
5/8" OD for lengths over 10 but less than 35 feet
From any model Liebert XDV/Liebert XDCF return
to return line of Liebert XDP
5/8" OD for lengths up to 10 feet
7/8" OD for lengths over 10 but less than 35 feet