Piping Schematics; Figure 67 Piping Schematic-Air-Cooled, Semi-Hermetic Compressor Models - Emerson Liebert DS Series User Manual

10.0 P S
IPING CHEMATICS
Figure 67 Piping schematic—air-cooled, semi-hermetic compressor models
Check Valve Relief Valve
Service
Valve
LIEBERT LEE-TEMP RECEIVER
CONDENSER
COIL
(LIEBERT LEE-TEMP)
LIEBERT LEE-TEMP
Service
Valve
COMPRESSOR
Muffler
Expansion
Solenoid
Valve
Valve
NOTES: Schematic representation shown. Do not use for specific connection locations.
Two refrigeration circuits provided. Single refrigeration circuit shown for clarity.
REFRIGERANT PIPING
FIELD PIPING
SERVICE / SCHRADER (ACCESS) CONNECTION, NO VALVE CORE
SERVICE / SCHRADER (ACCESS) CONNECTION WITH VALVE CORE
LIQUID RETURN
Head Pressure
Control Valve
HOT GAS DISCHARGE
LIQUID
Sensing
Bulb
Cylinder
Unloader(s)
SUCTION
External
Equilizer
Service
Valve
Filter Drier
Sight
Glass
CONDENSER
COIL
(FAN SPEED or VFD)
EVAPORATOR
COIL
Field installed relief valve(s) required
for 50Hz EU CE units rated maximum
480 PSIG (33 Bar).
**Muffler
HOT GAS DISCHARGE
LIQUID RETURN
* Components are not supplied
by Emerson but are recommended for
proper circuit operation and
maintenance
** Components supplied by Emerson
and must be field-installed (70kW,
77kW & 105kW models only)
94

Piping Schematics

Inverted Trap on discharge
& liquid lines to extend above
base of coil by a minimum of
7-1/2" (190mm)
OPTIONAL FIELD INSTALLED
FUSIBLE PLUG
* For rises over 25ft. (7.6m),
trap every 20ft. (6m) or
at evenly spaced points
*Isolation
Valve
*Isolation
* Trap at base
Valve
of risers longer
than 5ft. (1.5m)
DPN000797
REV 5