Quantech QWC3050T-200T, Installation Operation & Maintenance

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SECTION 2 – PRODUCT DESCRIPTION
FORM QWC3-NM1
ISSUE DATE:11/20/2020
QUANTECH
27
2
QWC3
Low-pressure liquid refrigerant enters the cooler tubes
and is evaporated and superheated by the heat energy
absorbed from the chilled liquid passing through the
cooler shell. Low-pressure vapor enters the compres-
sors where pressure and superheat are increased. High
pressure superheated refrigerant enters the condenser
shell where heat is rejected to the condenser water
passing through the tubes. The fully condensed and
subcooled liquid leaves the condenser and enters the
expansion valve, where pressure reduction and further
cooling takes place. The low pressure liquid refrigerant
then returns to the cooler.
QRC3
Low-pressure liquid refrigerant enters the cooler tubes
and is evaporated and superheated by the heat energy
absorbed from the chilled liquid passing through the
cooler shell. Low-pressure vapor enters the compres-
sor where pressure and superheat are increased. The
high pressure superheat refrigerant enters the remote
air cooled condenser where heat is rejected via the
condenser coil and fans. The fully condensed and sub-
cooled liquid leaves the remote air cooled condenser
and enters the expansion valve, where pressure reduc-
tion and further cooling takes place. The low-pressure
liquid refrigerant then returns to the cooler.
FIGURE 7 - PROCESS AND INSTRUMENTATION DIAGRAM
Evaporator
Condenser
Compressors
Refer to
Options
38.6 bar
27.6 bar
Refer to
Options
38.6 bar
Refer to
Options
Components:
Pressure Relief Valve
Service (Ball) Valve
Expansion Valve
Solenoid Valve
Sight Glass
Sensor Pressure
or Temperature
Service (Stop) Access Valve
Pressure Switch
Filter Drier
(Removable Core)
S
PS
Option
Control Functions:
DV - Display Value
CHT - Chilled Liquid Temperature
HPC - High Pressure Cutout
LPC - Low Pressure Cutout
HPL - High Pressure Load Limiting
-YLLSV
34.7 bar
36.3 bar
LD12938