0 piping connections and piping access points, 2 connection methods and points, 1 header system – Emerson Liebert XDCF User Manual

Page 17: Iping, Onnections, Ccess, Oints, Connection methods and points, Header system, Caution

Piping Connections and Piping Access Points

5.0

IPING

ONNECTIONS

AND

IPING

CCESS

OINTS

Refer to site specific drawings for general locations of the piping connections. For Liebert XDCF con-

nection locations, refer also to Figure 12.

5.1

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.

5.2

Connection Methods and Points

The assembly and connection means used for piping in the Liebert XD system are the same as those

used in conventional refrigeration systems. Observe all standard practices during installation and

startup to prevent damage and contamination.
Supply piping connection is 1/2" OD copper pipe, and return piping connection is 5/8" OD copper. Both

supply and return fittings are one-shot connections. These fittings contain pressurized R-134a refrig-

erant inside the Liebert XDCF.

The Liebert XDCF has supply and return piping access on the top of each module.

5.2.1 Header System

The Liebert XDCF module system requires use of the Liebert XD prefabricated piping assembly. The

prefabricated piping is compatible with the Liebert XD Flex Pipe required to attach to the Liebert

XDCF modules.

Figure 12 Liebert XDCF supply and return piping access points

For additional information, refer to the Liebert Xtreme Density System Design Manual, SL-16655.

CAUTION

Risk of sudden refrigerant discharge! Can cause loss of charge and minor injury!
Do not disconnect one-shot connections after they have been connected. Disconnection will

release pressurized R-134a refrigerant from the Liebert XDCF.

1-7/16"

(37mm)

3-9/16"

(90mm)

7-5/16"

(186mm)

Supply Pipe

(1/2" diameter)

Return Pipe

(5/8" diameter)

Pipe locations and

dimensions are the same

for upper and lower units