User manual

Piping Schematics
97 Liebert
®
DS
™
Figure 69 Piping schematic—air-cooled, scroll compressor models
DPN000798
Rev. 6
Filter Drier
Solenoid
Valve
Expansion
Valve
Sight
Glass
SUCTION
LIQUID
COMPRESSOR
EVAPORATOR
COIL
CONDENSER
COIL
(Liebert Lee-Temp)
REFRIGERANT PIPING
FIELD PIPING
Service / Schrader (Access) Connection With Valve Core
Service / Schrader (Access) Connection No Valve Core
For rises over
25ft. (7.6m),
trap every 20ft.
(6m) or evenly
divided*
CONDENSER
COIL
(Fanspeed or VFD)
Sensing
Bulb
Liebert Lee-Temp Receiver
External
Equalizer
* 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,
77 kW & 105kW models only)
Service
Valve
Service
Valve
*Isolation
Valve
*Isolation
Valve
Liquid Return
Hot Gas Discharge
Hot Gas Discharge
Hot Gas Discharge
Inverted Trap on discharge
and liquid lines to extend above
base of coil by a minimum of
7-1/2" (190mm).
Check
Valve
Check
Valve
Service
Valve
Relief
Valve
Head Pressure
Control Valve
Liquid Return
Trap at base of risers
over 5ft. (1.5m)*
Optional
Field-Installed
Fusible Plug
Optional
Sub-Cooling
Coil
Optional
Sub-Cooling
Coil
LIEBERT LEE-TEMP
(Liebert Lee-Temp or VFD condenser
is required with Digital Scroll)
28-42kW Digital Solenoid Valve
53-70kW Digital
Solenoid Valve
FANSPEED/VFD
(Liebert Lee-Temp or VFD condenser
is required with Digital Scroll)
NOTES: Two refrigeration circuits provided.
Single refrigeration circuit shown for clarity.
Schematic representation shown.
Do not use for specific connection locations.
LIEBERT LEE-TEMP
(Liebert Lee-Temp or VFD condenser
is required with Digital Scroll)