York YCAS0130 manual Refrigerant Flow Diagram, 108

Technical Data

REFRIGERANT FLOW DIAGRAM

FORM 201.19-NM1 (204)

OC

CDR

OS

COMP.

CLR

RC2

Low Pressure Liquid

Medium Pressure Vapour

COMP - Compressor	CDR -Condenser Coil
OC - Oil Cooler	OS - Oil Separator
m 3/s - Air Entering Compressor	R-22 - Refrigerant Circuit Number

Electronic Expansion Valve

Solenoid Valve

TXV Valve

Relief Valves

FIG. 36 – REFRIGERANT FLOW DIAGRAM

Low Pressure Vapour		High Pressure Vapour
High Pressure Liquid		Oil
CLR - Cooler	EC - Economizer (Added to some models)

Angle Stop Valve

Sight Glass

Filter or Drier

LD09428

Low pressure liquid refrigerant enters the evaporator and is evaporated and superheated by the heat energy absorbed from the chilled water passing through the evaporator shell. Low pressure vapor enters the compressor where pressure and superheat are increased. High pressure vapor is passed through the oil separator where compressor oil is removed and recirculated to the compressor via the condenser. The high pressure oil-free vapor is fed to the air cooled condenser coil where the heat is removed. On economized models, the fully condensed liquid enters the economizer.

A small percentage of the of the liquid passes through an expansion valve, into the other side of the economizer where it is evaporated. This low pressure liquid subcools the major part of the refrigerant. Medium pressure vapor then returns to the compressor. The subcooled refrigerant then passes through the expansion valve where pressure is reduced and further cooling takes place before return- ing to the evaporator.

108 YORK INTERNATIONAL