Vertiv Liebert MCV330 - Page 96

REV : 9
REV DATE : 5/22
DPN003965
Page :2 /2
Form No.: DPN001040_REV4
AIR COOLED PIPING SCHEMATIC
LIEBERT
®
DSE
44 1/2inch
1130mm
Notes:
1. The outlet of the receiver must be higher than the elevation of the EEV inside the indoor unit.
2. Unit must be trapped at bottom of riser with any rise over 5 feet (1.5m) high. If rise exceeds 25 feet (7.5m), then a trap is required in 20 foot
(6.1m) increments or evenly divided. DA250 with horizontal discharge has internally installed traps on the hot gas discharge line.
3. Pitch horizontal hot gas piping at a minimum of ½ inch per 10 feet (42mm per 10m) so that gravity will aid in moving oil in the direction of the
refrigeration flow.
4. Unit piping entrance varies by unit and may be through the top of the unit.
5. All indoor field refrigerant piping must be insulated, 1/2" minimum thickness. All external field refrigeration piping between the indoor and Liebert® Heat
Rejection unit do not need to be insulated.The installing contractor is responsible for the insulating, securing, protecting and the proper installation of all
field refrigerant piping, observing the details outlined by the Engineer of Record.
6. Consult factory for any exceptions to the above guidelines.
Field Piping
Internal EEV Height H inch ( mm)
DA125-DA165 43 (1092)
DA250 56 (1422)
Liquid
Return
Liquid
Return
Liquid
Return
Hot Gas
Discharge
Hot Gas Discharge
Hot Gas
Discharge
CIRCUIT 1
CIRCUIT 2
1
H
1
Notes:
DA250 with horizontal discharge should be piped out
the top of unit.
Liebert
®
MCV Condenser
Unit
Liebert
®
EconoPhase
Unit
Liebert
®
DSE
DA125-250 AND LIEBERT® MCV WITH RECEIVERS AT
SIMILAR LEVELS