REV : 3
REV DATE : 5/22
DPN005207
Page :2 /2
Form No.: DPN001040_REV4
AIR COOLED PIPING SCHEMATIC
LIEBERT
®
DSE
1. The bottom of the condenser coil must be less than 15ft(4.6m) below 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. DA265 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 outdoor field refrigeration piping does 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.
7. DA265 with horizontal discharge should be piped out the top of unit.
Field Piping
Internal EEV Height H inch ( mm)
DA125-DA165 43 (1092)
DA250 56 (1422)
DA265 56 (1422)
Liquid
Return
Liquid
Return
Liquid
Return
Hot Gas
Discharge
Hot Gas Discharge
Hot Gas
Discharge
CIRCUIT 1
CIRCUIT 2
1
1
54 7/8"
1393mm
H
DA125-265 AND Liebert
®
MCV WITHOUT RECEIVERS AT SIMILAR OR
BELOW LEVELS
®
Unit
®
Unit
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