York STYLE A YCWS User Manual page 9

Compressor
Relief
Valve
TEV
Oil
SV = Solenoid Valve SG = Sight Glass
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 compressor where pressure and
superheat are increased. High-pressure vapor is passed through the oil separator where heat is rejected to the con-
denser 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 take place. The low pressure liquid refrigerant then
returns to the cooler. Each refrigerant circuit utilizes liquid injection, maintaining efficient oil temperature operation
within the compressor.
YORK INTERNATIONAL
SG
Oil
Separators
Oil Cooling
Liquid Injection
Refrigerant Circuit No 2
Cooler
High Pressure Subcooled Liquid
Low Pressure Liquid
TEV = Thermostatic Expansion Valve
Condenser
SG
SV
Low Pressure Superheated Vapour
High Pressure Superheated Vapour
FORM 201.24-EG1
Relief
Valve
9