Emerson Xtreme Density European Union Fluorinated Greenhouse Gas Requirements, Pumped Refrigerant

System Description

1.1European 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.

1.2Direct and Indirect System Configurations

Liebert XD systems are available in Direct and Indirect configurations—differentiated essentially by the method of heat rejection (see Figures 2 and 3). The indirect system uses a pumping unit con- nected to a building chilled water system to control and circulate the refrigerant. In the direct system, the pumping functions are incorporated in the chiller, which must be connected to a separate heat rejection system.

Figure 2 Direct system configuration—hydraulic system diagram

Direct Liebert XD System Configuration

Pumping and control are performed by chiller.

Liebert Heat

Rejection Air Cooled or Water/Glycol Cooled

Liebert XDC

Liebert XDC

Pumped

Refrigerant

Pumped

Refrigerant

Liebert XD

Cooling Module*

Liebert XD

Cooling Module*

Liebert XD

Cooling Module*

Liebert XD

Cooling Module*

Supply Piping

Return Piping

*Liebert XDCF, Liebert XDH, Liebert XDO or Liebert XDV

Figure 3 Indirect system configuration—hydraulic system diagram

Indirect Liebert XD System Configuration

Liebert XDPs pump refrigerant to Liebert XDCF, Liebert XDH, Liebert XDO or Liebert XDV modules, isolate refrigerant circuit from building chilled water supply with an internal heat exchanger and maintains refrigerant temperature above the actual dew point.

Building

Chilled

Water

Liebert

XDP

Liebert

XDP

Pumped

Refrigerant

Pumped

Refrigerant

Liebert XD

Cooling Module *

Liebert XD

Cooling Module *

Liebert XD

Cooling Module *

Supply Piping

Return Piping

*Liebert XDCF, Liebert XDH, Liebert XDO or Liebert XDV

2