User manual

Piping Schematics
Liebert
®
DS
™
98
Figure 70 Piping schematic—water/glycol, semi-hermetic compressor models
DPN000895
Rev. 3
Filter DrierSolenoid
Valve
Expansion
Valve
Sight
Glass
SUCTION
LIQUID
COMPRESSOR
EVAPORATOR
COIL
FACTORY PIPING
OPTIONAL FACTORY PIPING
FIELD PIPING
Service / Schrader (Access) Connection With Valve Core
Service / Schrader (Access) Connection No Valve Core
Sensing Bulb
External
Equalizer
* Components are not supplied by
Emerson but are recommended for
proper circuit operation and
maintenance
** Field-installed at highest point in
system on return line to pumps
*** Locate at tops of all risers and
any intermediate system high points
Bypass Valve
Hot Gas
Reheat Valve
Hot Gas Reheat
Check
Valve
Service
Valve
Check Valve
* Shutoff Valve
* Shutoff Valve
Service
Valve
* Shutoff Valve
* Shutoff Valve
NOTES: Two refrigeration circuits provided.
Single refrigeration circuit shown for clarity.
Schematic representation shown.
Do not use for specific connection locations.
Muffler
DISCHARGE
* Hose
Bib
* Hose
Bib
RETURN
RETURN
RETURN
SUPPLY
SUPPLY
SUPPLY
Two-Way
Regulating
Valve
Sensor
Cylinder
Unloader(s)
LIEBERT DS UNIT
(and associated piping)
CUSTOMER
HEAT REJECTION
LIEBERT
HEAT REJECTION
DRYCOOLER
(Glycol)
GLYCOL
PUMPS
COOLING TOWER
AND PUMP
SYSTEM
BY OTHERS
Aquastat
Sensing
Bulbs
** EXPANSION
TANK
Optional Dual Pump System Shown
* Pressure
Port
* Pressure Port
* Check Valves
(on Dual Pump
Systems only)
* Gate Valves
Flow Switch
Supplied with Dual
Pump Systems
* Flow-Regulating
Valve
PARADENSER
®
CONDENSER
TO SECOND
REFRIGERATION
CIRCUIT
Optional
3-Way
Regulating
Valve
*** Air Vents
(typical)
For systems with drycoolers,
refer to 13.14.3 - Drycooler Settings.